Diamond wheels are used in any place

Diamond grinding wheel by the task layer structure common matrix , the transition layer composed of three parts .
Task layer , also known as the diamond layer , the abrasive , linking agent and a filler , is the task of grinding wheel
Locally . The buffer layer is also called non-diamond layer by the associated agent ( glass grinding wheel ) and a filler metal powder , convergence is well diamond layer on the substrate locally . Substrate PSA sanding disc  for receiving the abrasive layer , and in the use of clamping flange well with the grinder spindle. Common metals and refined selection of agents associated with steel, alloy steel powder as matrix ; resin -linked agent used aluminum alloys , electric wooden base . Machined from  abrasive fibre disc aluminum, steel or made ​​of bakelite , from supporting task level and chucking abrasive effect. ( Diamond tools ) black and white and using precision molding quality is uneven wheel has a great relationship with the matrix .
 Diamond grinding wheel which is mainly used in the manufacturing industry ? Currently on the market there are a wide variety of diamond wheels , because of their special characteristics of its use is also more extensive.
  So diamond grinding wheel mainly used in the manufacture of which industries ? It is mainly the use of : machining centers and grinding with diamond drill grinding and other heavy-duty cutting , grinding for glass, ceramics, ferrites , data and other brittle semiconductor materials and metal materials , shape carbide materials processing , electrolytic grinding. Grinding having good wear resistance , high efficiency and long life zirconia flap disc  characteristics to use . Due to the high hardness of diamond grinding wheels , cutting good, so wheels generally do not need trimming , but after a period of use , the chip clogging performance decline , even grinding force, grinding temperature increased, causing the wheel to crack, after plugging in the wheel , it must be trimmed , when dressing , available silicon carbide or corundum stone, diamond sharpening wheel , the method is a piece of flat silicon carbide or corundum Whetstone contact rotating diamond wheel , in the process of grinding , diamond grinding wheel due high hardness , can move as silicon carbide or corundum grinding stone, silicon carbide or corundum Whetstone will clear out the chips on a diamond wheel , diamond grinding wheel cutting restored .

Talking about the development and status of cut pieces

Speed ​​the development of resin abrasive relatively fast, whether it is growing year by year from the product in production, quality and variety, especially in recent years has become a booming good situation. Why resin bonded abrasives will develop so fast, in addition to objective conditions, such as social requirements Sik, there is sufficient raw materials ...... and so on. The most fundamental reason is that the resin binder and has unique properties inseparable. To talk about its advantages: first, it  cutting and grinding disc combines high strength. Comparison with other binders, resins have a higher bond strength at higher speeds can be used to withstand greater pressure grinding, which is widely used in rough grinding and deburring process in the steel and foundry industries. And with the improvement of the grinding process, the grinding of the cutting disc load and strength requirements are also rising, from the past hanging portable grinders and sanders to today's high-speed heavy-duty billet repair mill, cutting pieces from the past use of the speed of 35-40 m / s, developed to 80-100 m / sec, the wheel loads from the past 30-50 kg, to today's 1,000 kg or more, if No high strength bond is difficult to achieve.
 Followed by the abrasive can be  velcro disc made special shapes and special needs. This is mainly due to the binder resin at a low temperature (200 ℃ or less) hardening conditions do not change the basic properties of the material, which can be added to the different needs of the filler material embedded or ornament. In order to meet requirements such as grinding grooves and can be made with porous shaped grinding wheel, grinding wheel in order to improve the strength of the glass can be added gingham and other metal wire mesh in cutting tablets. Can be added to increase the conductivity of copper, aluminum and graphite powder. Third, suitable for manufacturing thin wheel throughout the specification. In many metal cutting and slotting processing sector has been widely used processes, to achieve the thinnest 0.1 mm, which completes the blade can not be done in general processing tasks, especially in high speed after the cutting reinforcing sheet has been widely metal cutting wheel  used, the need for the cutting wheel increased rapidly.
Fourth, the binder resin has a certain elasticity. In the grinding process, the surface roughness is conducive to meet the higher demand. In the machining process, grinding and polishing processes more choice of resin bonded grinding wheels, grinding under the same conditions, the resin abrasive finish higher than ceramic abrasive.

Abrasive polishing method described six

1, the mechanical polishing: mechanical polishing is plastically deformed by

the cutting surface is polished to remove the convex portions obtained by a

smooth surface polishing method  ceramic belt generally used Whetstone, wool wheel,

sandpaper, abrasive belt, nylon wheels, manual operation is Lord, special

parts such as body surface rotation, you can use the turntable and other

aids, high surface quality requirements can be thrown over lapping method.

Super abrasive lapping and polishing is a special abrasive in polishing

liquid containing abrasive, and  sanding paper roll pressed on the surface of the workpiece to be

machined for high-speed rotation. The polishing method is the highest age.

Optical lens mold often use this method.
    2, chemical polishing: chemical polishing is to make the material in the

chemical medium surface micro-convex and concave portions preferential

dissolution of some of the more, resulting in a smooth surface. The main

advantage of this method is that the device does not need a complex, the

complex shape of the workpiece can be polished, many workpieces can be

simultaneously polished, high efficiency. The core problem is formulated

chemical polishing polishing solution.
    3, electrolytic polishing: electrolytic polishing and chemical polishing

the same basic principle, namely by selectively dissolving the surface of

fine convex portions, the surface smooth. Compared with chemical polishing,

can eliminate the impact of the cathodic reaction, the effect is better.

Electrochemical polishing process of  coated abrasive leveling the macro and micro leveling.
    4, ultrasonic polishing: the workpiece into the abrasive suspension and

placed in an ultrasonic field together, relying on the role of ultrasonic

oscillations, so that the abrasive grinding and polishing the surface of the

workpiece. Ultrasonic machining macroscopic force is small, does not cause

deformation of the workpiece, but the tooling fabrication and installation

more difficult. Ultrasonic machining can be combined with chemical or

electrochemical methods. In the etching solution, based on the electrolysis,

the solution was stirred and then applying ultrasonic vibration to the

workpiece surface from the lysate, or near the surface of the electrolyte

uniform corrosion; ultrasonic cavitation in a liquid is also possible to

suppress the corrosion process, in favor of the surface luster.
    5, fluid polishing: polishing fluid is relying on high-speed flow of

liquid abrasive scouring and polishing the surface to achieve the purpose of

carrying. Common methods are: silicon carbide abrasive jet machining, liquid

jet machining, grinding fluid power. Fluid energy mill is driven by hydraulic

medium that carry high speed abrasive liquid flow through the reciprocation

of the workpiece surface. Medium used mainly in low pressure flowing through

specific compounds and mixed with good abrasive made from silicon carbide

abrasives abrasive powder can be used.

Several conditions abrasives

The abrasive article has a modern conditions without resistance, in the first condition for the workpiece material, the shape, the processing method, etc., and then the conditions of the grinding machine tool rigidity, the abrasive seismic, on the required accuracy, then grinding process parameters, speed lines, process parameters depth  PSA sanding disc of cut, workpiece size, and finally the job status manually on the machine, motor status, conditions of trim, depth, feed several. Now people in the market to see only material hard abrasives, stylish, than ever abrasive already have greatly modified. Now fast approaching in which people's lives, every step of the abrasive production steps are rigorously checks, after processing several conditions will not allow unqualified mold them into the market, so Consumers buy  Mounted flap wheel the rest assured with peace of mind. Choice for abrasive concentration
  Our abrasives increasingly thrive, constantly seeking new highlights innovation, so that more and more consumers are concerned about the.
  The concentration of the mold should be how to choose?
  Mold species concentration is binding agent, the particle size of the geometry of the requirements on the process. For the different type of binding agent used in the different ranges, if it is the same in terms of a binding agent, the concentration in general is higher than the diamond die, most of the class with the steel toughness, hardness and strong, thereby  cut off wheel reducing the concentration on a little, so as to achieve a concentration of some of the requirements.
 Abrasives are molded from production to strict inspection before the market, the design has changed from the past, those styles are a new look to this new era.

Abrasives and abrasive products typically include two types of superhard abrasive materials

Abrasives and abrasive products typically include superhard abrasive materials into two categories . Ordinary ordinary abrasive grinding abrasive means made ​​of superhard abrasive material is abrasive diamond, cubic boron nitride and other superhard materials. Abrasive abrasive bound form by ordinary into bonded and coated abrasives , abrasive paste . In abrasive , a binding agent used in accordance with the different points abrasive fibre disc  vceramic abrasive, abrasive resins , rubber, abrasive, magnesite abrasives and other categories. In coated abrasives , the adhesive can be divided according to different categories . According to different grinding can be made ​​use of different basic shapes and characteristics , whereby can be divided into different categories , such as can be made of abrasive grinding wheels, grinding , stone, sand tiles , polishing block and so on. These different types of abrasive and have a different shape , the first shape and the type of abrasive grinding series combination of different binding agents into different varieties. Each species of different sizes and different characteristics constituting ceramic belt  the abrasive and combined into a variety of specifications .
 Bonded Abrasives manufacturing process are: distribution of material , mixing , forming, heat treatment, machining and inspection . With different binding agents , manufacturing processes are not the same. Vitrified abrasives used mainly -pressure method , the abrasive and binder weight ratio formula weighing, mixing evenly placed within the mixer, put in a metal mold in the press molding of abrasive rough . Blank firing kiln dried and then into the firing temperature is generally about 1300 ℃. When using a welded low-melting binder, the firing temperature is lower than 1000 ℃. Then the provisions of the exact size and shape processing, final inspection products. Resin bonded abrasives are generally molded in the press at room temperature , there is also pressurized with heating in a hot-pressing process under heating conditions . After forming in the hardening furnace hardening . The phenolic resin as binder, the curing temperature is 180 ~ 200 ℃. Rubber bonded abrasives used mainly for mixing roll machine and rolled into thin slices, then use a die cutter punching molding ; also some with loose material, into the inner metal mold press forming. After vulcanization molding vulcanization tank , a temperature of 165 ~ 180 ℃. Metal bonded abrasives manufacturing process , there are two powder metallurgy and plating method , mainly for superabrasive abrasive . Bronze powder metallurgy as the binding agent , or after mixing by hot abrasive fibre disc  press molding at room temperature , and then sintering processing. Plating with nickel or nickel-cobalt alloy as the metal plating , according to the abrasive bonded to a plating process on a substrate made ​​of abrasive.
Special varieties of sintered corundum abrasives and grinding with abrasive fibers and so on. Sintered corundum abrasive is alumina powder and the amount of chromium oxide mixing, forming , sintering at about 1800 ℃. This abrasive compact structure , high strength , mainly used for processing watches, instruments and other parts. Abrasive fibers are adhered or containing abrasive filaments ( eg nylon ) as the raw materials made of , its flexibility , materials and products used in metal polishing .

Coated Abrasives Grinding basic knowledge of some simple introduction

1, coated abrasives grinding points and Scope Coated Abrasives is a flexible abrasive from the abrasive substrate and binder made. Efficient cold cutting object point coated abrasives grinding grinding flexible, widely used:
(1) large flat thick, thin sheet, including processing metal strip;
(2) mass production of a variety of  Sanding Sheets metals, non-metallic workpieces; (3) complex surface of the workpiece forming grinding and polishing; (4) metal pipes of various diameters, rods, cylindrical grinding roll material curved surface grinding, internal grinding, etc..
(5) the use of a wheel or drum sand cover page can replace buff polishing; 6) discoid products are used in large-scale housing, box, hull, bridges, etc. weld grinding, deburring, rust and other aspects of a large area, efficient, convenient and safe. 2, the grinding mechanism of belt
 Coated Abrasives can be understood as a multi-tool knife multi-blade composed of many grains. Coated Abrasives grit is evenly distributed in the surface of the substrate, essentially single distribution. Coated Abrasives special abrasive used, the basic requirements of a high  grinding wheel manufacture clay content, uniform particle size, so that the surface of the abrasive coated abrasives have a good high order. In particular, the production of coated abrasives modern electrostatic sand-planting process to ensure sharp outward abrasive, abrasives orientation. Coated Abrasives abrasive surface and contour given pumping arrangement, and is an important factor in high efficiency and cold grinding coated abrasives to keep grinding. Typical is the difference between grinding wheel "with a belt grinding surface by increasing vertical loads (grinding pressure), rather than by increasing the belt speed to develop.
Belt line speed usually within 15-35 m / s range, rarely more than 50m / s.
 Belt during the grinding process, the occurrence of three different processes: Swipe - abrasive swipe on the workpiece, resulting in elastic deformation of the workpiece material, plows - abrasive plastic flow caused by the workpiece material, so Materials produced and squeeze as moving forward from the bottom and sides of extruded grains, while removal abrasive paper sheet  of a small amount of material; cutting - material produced fracture in the formation of chips in front of the slide, there is quite fast removal rate. The above three processes are connected to each other, wherein the cutting process is grinding the most effective form.

Organic abrasive shellac was done with natural binding agent

Organic abrasive shellac was done with natural binding agent , later with the artificial resins , organic abrasive , it has rapidly developed. Worldwide production of resin and ceramic abrasive grinding ratio is more than 1 : 1 , now the trend is still growing . Resin abrasive so rapidly development , has the following characteristics aspects:
1, high bond strength , such as the abrasive fibre disc  use of high-speed cutting wheel line speeds of up to 80-100m / s, heavy duty grinding wheel load of about 50kg up to 1000kg past over . 2 , easy to adjust the structure and properties of hardened resin abrasive temperature is only about 200 ℃, ceramic abrasive than the firing temperature of 1300 ℃ lower, and therefore can be abrasive ornament network Plaid , wire, graphite, Lo caps and other materials to meet the needs of different grinding . Many properties of the filler can maintain the abrasive is made , the filler can be changed using different abrasive performance in a wide range of discharge . 3 , resin grinding with a certain degree of flexibility , help to improve the finish of the workpiece to be machined , the choice of graphite , chromium and other polishing materials for the filler can be further reduced roughness.
4 , easy to burn the workpiece processing , resins in the 230 ℃ gradually charring temperature processing partial carbonization of the resin to produce self-sharpening , grinding improved sharpness and thus also reduce the grinding temperature to avoid burns the workpiece.
5 , the resin has excellent moldability , but also good toughness , which can be made with a thickness of about 0.1mm sheet wheel for cutting slot . 6 , resin abrasive production cycle is short , simple equipment , less investment and quick . The start of many products Abrasives Factory 7 , resin abrasive poor water resistance , alkali resistance is poor, short shelf life , its shortcomings, the production and use should be note 8 , for the manufacture of a large number of resin abrasive cutting wheel, cymbal -shaped grinding wheel , heavy-duty wheel , roll polishing wheel , graphite  metal cutting wheel mirror grinding wheel , conductive grinding wheel , honing wheel, soft polishing wheel and so on.
2 resin abrasive structure and nature one , resin grinding abrasive structure commonly referred to as the three elements of the five factors mainly ceramic abrasive object in terms of resin abrasive six factors should be four elements , four elements are abrasives, binders, filler materials and ornament embedded pores ( 1 ) abrasive as cutting edge , cutting tools, grinding tools is a major component . ( 2 ) abrasive particles and binder binding agent plays a role into the filled and ornament materials, so that the abrasive can be molded ( 3 ) filler material ornament embedded abrasive impart various unique properties such as conductivity , and the use of polishing with mounting holes in the abrasive than other structures , such as the wheel bolts ( 4 ) having an internal porosity is the porosity of the abrasive , and contribute to the cooling effect of the second chip , the abrasive properties of the resin
Resin abrasive performance is determined by the resin abrasive six factors , six factors are : abrasive material, abrasive particle size , binders ( resins ) performance, abrasive hardness , abrasive filler material organization and performance . ( 1 ) There are a variety of abrasive materials such as corundum abrasives , white fused alumina , black silicon carbide, green silicon carbide , different abrasives have different properties, for the needs of different grinding objects , but also determines the abrasive performance.
( 2 ) the same grit size of the abrasive grit different for the accuracy of the workpiece to be machined , roughness, processing efficiency and other aspects have significant impact. ( 3 ) a binder  resin, various adhesive strength, heat resistance , abrasion resistance and stability are different, the type of the resin used as the binding agent are different abrasive performance . ( 4 ) the hardness of different materials of different quality and processing of the workpiece hardness abrasive have different requirements , and hardness have a great influence on the efficiency of the processing ( 5 ) organized tissue abrasive grains in the abrasive used in the abrasive expressed as percentage of the volume occupied by the abrasive grains account for a large percentage of the volume of pores less abrasive , abrasive grains accounted for more than the volume percentage of small pores , the abrasive grinding tissue indirectly reflects the number of pores , it correspondence is not equivalent to the size of the porosity , which is should be noted that ( 6 ) packing the resin hardening temperature is low abrasive , so abrasive made ​​after mixing when adding some filler remained of the original features such as copper , graphite conductivity, polished performance of certain fillers and high resolution performance and so affect the properties of the abrasive , it is no less resin abrasive for this sixth factor ( 7 ) in addition to the above decision six factors outside the abrasive performance , the performance of the manufacturing process in a number of over- generated , such as balance and geometric precision , also has a great influence on the abrasive quality. 3 resin  sanding roll bond grinding resin used as a binder resin with the requirements : ( 1) a strong binding ability of abrasive . ( 2 ) has a higher heat resistance. ( 3 ) has a high tensile strength, compressive strength, impact strength. ( 4 ) has good processing properties and manufacturing . Common resins having these characteristics include: phenolic resin, epoxy resin , phenol resin, new , bismaleimide resin, polyethylene amine , polyvinyl acetal . A phenolic resin, a phenolic resin from phenol and formaldehyde in the presence of an acid , an alkali catalyst to effect the synthesis . Since the process can be made of different materials the two liquid resin and powdered phenolic resin, a phenol , a phenol resin manufacturing ( 1 ) phenol , also known as carbolic acid phenol , white colorless needles , pale pink oxidized in air . Phenol can be dissolved in water , soluble in alcohol, alkali , etc. There are acidic, easily penetrate the skin , causing allergies. About 2% phenol aqueous solution of soap used for disinfection , medical name " Lysol children " ( 2 ) Formaldehyde is a colorless gas , for the manufacture of phenol formaldehyde resin is an aqueous solution .

Ceramic corundum abrasives and abrasive characteristics analysis

In machining technology continues toward high-speed, high efficiency , and high-precision direction of development , the application of titanium alloy, high temperature alloy stainless steel , high- strength steel and ultra-high- strength steel , composite materials, engineering ceramics and other hard materials are also increasing. High-tech needs of both traditional areas makes grinding wheel corundum and silicon carbide grinding wheel is sometimes difficult to meet production needs, must use stone cutting wheel  the new abrasive wheel to meet demand. Corundum , silicon carbide, diamond and CBN grinding wheels compared to four kinds of abrasives , diamond gradually replace silicon carbide , cubic boron nitride gradual replacement of corundum has become an inevitable trend. But for machining hard materials, because of their brittleness , toughness and ductility large , the hardness is high ( high hardness , or in the presence of a base in a large number of hard particles ) , chemical activity , high temperature strength characteristics, so that the when grinding more difficult , there grinding force, grinding , high temperature, abrasive wear fast , low grinding efficiency, work hardening and serious phenomenon that diamond and CBN abrasive own merits and can not meet such grinding needs. Some  zirconia flap disc new abrasive due to its high toughness , self-sharpening , good benefits, it played an important role in grinding difficult materials , including ceramic corundum abrasives ( also known as microcrystalline corundum abrasives ) appeared to become the highlight of the grinding . 2 Features and application of ceramic corundum abrasives
Ceramic corundum abrasives ( also called microcrystalline corundum abrasive ) is a new aluminum oxide abrasive , corundum and corundum which maintains the high hardness and wear resistance properties , but also has high toughness , easy to change corundum broken disadvantage that has the characteristics of toughened alumina ceramic , which can be widely used in the manufacture of coated abrasives and abrasive . Preparation of ceramic corundum abrasives shown in Figure 1 . Compared with fused alumina abrasive except that different materials and different preparation process . This method uses an aqueous alumina raw material by the sol - gel process for the synthesis of submicron grains (0.1μm ~ 0.2μm) of the corundum crystal structure and prepared by sintering a ceramic microcrystalline corundum. Compared with ordinary corundum abrasives , ceramics and corundum abrasives only high hardness and abrasive microcrystalline structure because it has a lot of crystal solution surface . Grinding or dressing , when dressing , ordinary fused alumina abrasive grain surface along transgranular fracture , showing macro broken ; ceramic corundum abrasives rupture along the grain boundaries , showing microscopic broken, continue to produce sharp cutting edge , self- sharpening and peel less . With its production of grinding wheels with anti- clogging , high abrasion resistance , grinding heat , long life, high rate of removal , grinding and grinding quality is better than the big advantages . It retains the advantages of SG , with breakthroughs in the abrasive shape , there is a very thin rod-like crystalline structure , difficult to machine materials suitable for creep feed grinding and machining Inconel , high-temperature alloys. TG abrasive grinding abrasive material removal rate in the corundum 2 times , seven times the life of  portable belt corundum . Process for preparing ceramic corundum abrasives can microcrystalline alumina abrasive and diamond, cubic boron nitride and other expensive high-grade abrasive combined without reducing the performance of the premise, significantly reduce costs , it can also be white corundum, corundum abrasives and other low-level combine to dramatically improve its performance . So microcrystalline corundum abrasives is a very good application prospects abrasive, currently microcrystalline variety of abrasive corundum abrasives prepared in the aerospace , automotive, mechanical, optical , bearings, tools, molds, and other fields have a wide range of applications .

suitable for hand or machine grinding mill

 Sponge sandpaper is a mobile phone casing surface as the most highest utilization rate should be polished and abrasive applications such as Foxconn, Pegatron, Huawei, prestige, accessible, BYD and other large mobile phone shell grinding plant, especially for like iphone, sansung, millet various processes such as cell phone case polished surface. Since 2006, the sponge sandpaper polished by the patch applied to the portable belt  model to move to the best cell phone case sanding sandpaper after mandatory from the initial 3M sandpaper sponge, NORTON sponge sandpaper, LUCKYSTAR sponge sandpaper and other imported original products in the market three pillars, due to imports high cost, long period of goods, factories continue to reduce production costs to pursue slowly emerged on the market over the possessions brand developed the production of sponge sandpaper, of which the trader abrasive sanding belt  profits abrasives plant produced DLC sponge sandpaper sandpaper sponge in the domestic more prominent, and its products using, corundum, silicon carbide, white fused alumina, zirconia alumina abrasive such as a substrate with the best quality of the binder coated sponge, sponge sandpaper all in strict accordance with the production process for production abroad, not only cheap, quality is more and imported sponge sandpaper same, Since the product launch has been a number of large enterprises to adopt on the phone casing polished product with a high temperature, acid, etc., suitable for hand or abrasive wheel  machine grinding mill, but also in accordance with the requirements of any  customer, any model tailored to fit the needs of the sponge sandpaper, separable cut long or round, gum, back velvet different sponge sandpaper, grit 120-180 thickest and most fine of up to 3000-4000 or finer, and the other to provide OEM customized business.

What superhard abrasive materials manufacturing formula is

Abrasive formula design based on the use of performance and processing requirements , is to create high-quality abrasives afternoon to link.
A recipe formulation design principles must follow the following principles . 1 . Formulation to meet the requirements for use . 2 . Formulation to ensure that the possibility of the manufacturing process. 3 . Rich source of raw materials used , low prices. 4 . Manufacture and use of the process, people and the environment as much as possible does not produce mini flap disc  harmful effects. Second, the formulation process of molding resin bonded abrasives molding , thermoforming generally used method , ie the process by pressing the upper and lower pressure thermal conductivity of the mold extreme heat, melt the bonding agent , and to maintain a certain pressure, in a certain time, so that condensation cured , it is not easy to foam or abrasive layer from cracking and to maintain the density , hardness and bond strength matrix abrasive . Small diameter products can be used for cold molding methods . Curing ( hardening ) of the thermoplastic phenolic resin and hexamethylenetetramine , in the preliminary compression molding has become a thermosetting phenolic resin, the article has a certain strength and hardness, but since the pressing time is short, curing is not sufficient , yet the quality of the product meet the requirements of the use of grinding , and therefore must be the second curing temperature and time control , the plastic resin , the free phenol and hexamethylenetetramine curing reaction proceeds sufficiently , does not melt completely into insoluble thermosetting resins. Curing equipment cured resin  abrasive flap disc bonded abrasive equipment is relatively simple , the most used electric oven drying , the drying device is a drying chamber using double metal sheet made ​​of laminated with asbestos , aluminum silicate, and glass fiber insulating insulation material fill. When powered on, the heat resistance wire heating oven bottom , so that the inside of the wheel heat curing . However, this part of the bottom of the drying chamber is heated , the heat flow increase , relatively high temperature for curing the resin bond products commonly used drying box oven with a blower device , which can heat the air in the officer by mechanical action , convection to keep the temperature as even as possible . Using electrical contact thermometer temperature measurement point in the box upper part , so as to be loaded inside the article installed in the position of the intermediate layer . SBC device temperature can also be used to control the temperature , the recorder can be observed through the whole process of heating curve to determine the amount due to the number of installed furnace caused narrow belt  by changes in temperature speeds. Determining the curing temperature curing temperature is the maximum temperature is determined according to different kinds of resins . Phenolic resins such as the maximum temperature to 180 - 190 ℃ appropriate, below this range, the curing is complete , the bond stability  is poor , above this range , adverse effects on the mechanical properties of the article , the article makes the hardness, strength reduced consumption, or even lose value as scrap . Therefore, the phenol resin curing temperature was 185 ℃ ± 5 ℃. The polyimide resin is 230 ℃. Determining a heating rate of temperature rise rate is determined according to the characteristics and shape of the abrasive determined . Resin binder in the press has a short curing , has 85% - 95% of the thermoplastic resin becomes a thermosetting resin , mine heating rate at 100 ℃ before you can quickly ,100 - 140 ℃ may be slower ,150 - 185 ℃ accelerate and proper , but in the insulation, the discharge time may be longer, a polyimide resin , a high temperature pre-polymerization , the temperature at 180 ℃ freely before the temperature slowly after 200 ℃ , holding time is appropriate to put long.

the use of different types of sandpaper when buffing direction

Polishing sandpaper sandpaper polishing must be noted that the problem is one of the ways mechanical polishing, therefore, the use of any kind of mechanical polishing polishing process which are very focused on some of the problems in the process, sandpaper, polishing is no  quick change disc exception, then sandpaper polishing in the application process issues that need attention are those who do? Look at the following three normalized within: 1, must stick with a soft bamboo stick, because in the circle on the spherical surface polishing, the use of drinking stick bamboo stick round face can be better co-ordination and spherical curvature. Conversely, hard wood is suitable for flat surface polishing. Trim the ends of the stick with the steel surface can make it fit shape retention, so to avoid wood or bamboo acute angle caused by contact with the surface of steel deep traces. 2, the use of different types of sandpaper when buffing direction should be suitable angle transformation. This  sandpaper can distinguish between before and after polishing with different abrasive stripe shadow effect left. In sandpaper before changing to a different model, preferably with a 100% cotton dampened with alcohol-based cleaning fluids on the polished surface be carefully wipe, since it is often a little sand left on the surface will destroy the entire polishing work goes on . Polishing process is very particular about cleaning the entire surface, a variety of different sandpaper transform, you must pay attention to this point. 3, in the polishing process, often a lot of time in order to avoid abrasions and burns the  ceramic flap disc surface, so the use of # 1200 and # 1500 sandpaper polishing careful when you place grid. Anyway, with each of the different types of sandpaper polishing, to be used in two different directions, for different angles of the polishing. To avoid scratches during polishing and burn phenomenon.

Angle grinding abrasives industry, a new pattern of development of the market

Angle grinding abrasives products as an integral part of industrial production and processing consumables, also commonly referred to as industrial supplies. Abrasives using a wide-ranging, mostly industrial production will use to industrial processing, industrial abrasives known as teeth reputation. Abrasives product features are only two, one cut two polished. Related  Sanding disc to the industry, including machinery, equipment manufacturing, car polish, furniture polish, etc..
Abrasives Market
 With China's economic development, the degree of progress in all walks of life are great, but also stimulated the development of abrasives industry, however, the development of abrasives industry and exposed some problems, technical product innovation, product energy conservation and other issues are restricting the abrasives industry. Abrasives industry zirconia flap disc  with low barriers to trade, which created a whole industry is fragmented mess, there is no uniform production and quality standards.
 As a special abrasive industry, metallurgical aspects of the problem of energy saving deposit abrasives, corundum deposit domestic overcapacity, with the national energy conservation policy implementation, the next step will eliminate corundum industry policy priorities backward production capacity. The next five years is expected to angle grinding abrasives industry keynote will also become the country's economic policy tone.
  Experts believe that to maintain a healthy abrasive sanding belt  and orderly development abrasive industry also needs to resolve the following issues: the production capacity of decentralized, small-scale, low efficiency, enterprise-scale structure of our country is still quite reasonable abrasive, low industrial diversity order Small enterprises still account for a large proportion; new product development capability is weak, the domestic abrasive products are set low-end market, low technological content of products, and the lack of high-technology products, mainly dependent on imports, only to meet the automotive, aerospace, machine tools , bearings, locomotives and ships and other industrial needs about 1/3; overcapacity, low product homogeneity serious, especially its alumina production.
"Twelve Five Year Plan" began to develop abrasive industry has brought great opportunities for development challenges. Energy saving, clean production will show in the production areas abrasive industries, in addition, the state will have a great impact on the development of production in the field of abrasive policy machinery, shipbuilding, automobiles, airplanes and so on. Abrasive enterprises should technological innovation and new product development direction to seek a breakthrough, the development of high-end abrasive products and reduce dependence on imports. The next five years is expected to angle grinding abrasives industry keynote will also become the country's economic policy tone.

An abrasive belt grinding efficiency

 An abrasive belt grinding efficiency , five times as common grinding wheel . Belt size can be large ( wide and 4m), for large area efficient processing , processing a wide range of materials .
 2 small due to the heat generated by grinding disc  friction and heat in good condition , which can effectively reduce the deformation of the workpiece with burns . However, due to the belt can not be trimmed , its precision is generally lower than the grinding wheel , as it is carefully processed , its dimensional accuracy up to 0.0012mm, flatness up to 0.001mm.
 3 gap width between abrasive cutting edge , chip clogging , good machinability, for open belt grinding , breaking into new abrasive grinding zone , relatively speaking grinding wheel condition is more stable.
 4 soft contact with the abrasive tools  workpiece belt , belt can be affixed to the surface anti- grinding a variety of complex forming surface , and has a good run together, polished effect. Surface roughness Ra0.8-0.2 microns up .
 5 adaptable, available in belt grinding lathe , vertical lathe, planer and other external circle , inner circle , plane grinding.
 6 Auxiliary less time , after a positioning of the workpiece can be replaced several times to bring sand to complete all processing without replacing the balance to be carried like a wheel , and abrasive disc finishing work .
 7 simple equipment, low manufacturing cost. Contact wheel rarely worn belt can maintain a constant speed ; transmission chain is short, increasing the stability of grinding , machine power efficiency up to 85% . However, consumption in general than belt grinding wheel consumption .

Abrasives scientific knowledge: the type and characteristics of introduction

Abrasives are used for grinding, lapping and polishing tools. Most artificial abrasive grinding with abrasive plus binders made from natural mineral rock is also useful for direct processing into natural abrasive. Abrasives except in machinery manufacturing and other metal processing industries are widely used, but also for the processing of food processing, paper industry and ceramic, glass, stone, plastic, rubber, wood portable belt  and other non-metallic materials. Abrasive during use, when the blunt abrasive, the abrasive agent itself or in conjunction with portions broken broken abrasive grains from the partial or complete loss of the working surface of the abrasive article and the emergence of new cutting edge, sharp or continuously exposing new abrasive grains within a certain time so that the abrasive cutting performance can be maintained. This self-sharpening abrasive, is abrasive tool compared with the general prominent feature. As early as the Neolithic Age, humans had already started to use natural millstone processing knives, stone axes, bone, horn, and tools such as a tooth; 1872, appeared in the United States with a combination of natural abrasive clay firing Ceramic wheel; 1900, the advent of artificial abrasives, using artificial abrasives manufacturing have produced a variety of abrasives, grinding and create the conditions for the rapid development of grinding machine. Thereafter, the abrasive nature of the decreased proportion of abrasive. Abrasives their source of raw materials, natural and artificial abrasive abrasive categories. Commonly used in machinery industry is only natural abrasive whetstone. Artificial abrasive at the basic shape and structure of distinction, there are wheel, grinding, stone, sand tile (collectively, abrasive) and coated abrasives five. In addition, the habits of the abrasive slurry as a class. Abrasive used by the abrasive can be divided into ordinary abrasive abrasive and superabrasive abrasive. The former corundum and silicon carbide abrasive general, the latter made of diamond and cubic boron nitride and other superhard abrasive. In addition, there are some  abrasive sanding belt special varieties, such as sintered corundum abrasives etc.. Ordinary abrasive abrasive is bonded abrasive solid ordinary form a certain shape and a certain intensity of abrasive. Generally abrasive, binder and pore structure, which is often called the abrasive three parts of the three elements. In abrasive abrasive cutting action from the. Binding agent is a solid form of the abrasive loose abrasive materials, inorganic and organic types. Ceramic inorganic binders, such as magnesite and sodium silicate; organic resin, rubber and shellac. The most commonly used is a ceramic, resin and rubber binders. Holes in the ground of debris from the chip and chip effect, and can accommodate coolant helps grinding heat dissipation. In order to meet some special processing requirements, the pores can also dipped some fillers, such as sulfur and paraffin, etc., to improve the performance of the abrasive. This filler is also called the fourth abrasive elements. Said ordinary abrasive abrasive characteristics of the project are: the shape, size abrasive, grain size, hardness, organization and binding agents. Grit abrasive hardness refers to the external force, from the degree of difficulty shedding the abrasive surface, which reflects the bond abrasive grip strength. Abrasive hardness depends mainly on how much amount of binder added density and abrasive grit off easily expressed low abrasive hardness; vice versa, which means that high hardness. Hardness level is generally divided into super-soft, soft, soft, medium, medium hard, hard and superhard grade seven, from these levels can be subdivided in a number of small magnitude. Abrasive hardness measurement method, more commonly used hand cone, mechanical cone method, Rockwell hardness measurement method and blast assay.
Hardness and its dynamic modulus of elasticity abrasive has a corresponding relationship, which is conducive to the use of audio measurement abrasive method to represent the dynamic elastic modulus abrasive hardness. In grinding, the high if they are grinding the workpiece material hardness, generally used in low hardness abrasive; contrary, the use of high hardness abrasive. Coarse abrasive organization into tight, medium and loose categories. And number of each class can be further subdivided, with the organization number to distinguish. Abrasives organization number the greater the share of abrasive in the abrasive volume fraction is smaller, wider gap between the abrasive, the more loose tissue. Conversely, the smaller the organization, said more tightly No. organization. Loose abrasive organization is not easy when you use passive, less heat during the grinding process, the workpiece can reduce heat deformation and burns. Tight organization of abrasive grains not falling, help keep grinding geometry. Abrasives be organized only in the manufacture of abrasive formula by control, generally do not make the determination. Superabrasive abrasive primarily by diamond, cubic boron nitride and binding agent to form a solid abrasive. Because of diamond, cubic boron nitride high price, with good abrasion resistance, they are made with ordinary abrasive abrasive abrasive different, except for super abrasive layer, as well as the transition layer and the substrate. Superabrasive layer is a part of the cutting action, the super abrasive grains and a binder composition. Base support care role is played in the grinding of metal, bakelite or ceramic materials. For connecting the substrate and the buffer layer superhard abrasive layer comprising a binder  abrasive wheel and, sometimes, may be omitted. The binding agents are used resin, metal, plated metal, and ceramics. Bonded Abrasives manufacturing process are: distribution of material, mixing, forming, heat treatment, machining and inspection. With different binding agents, manufacturing processes are not the same. Vitrified abrasives used mainly-pressure method, the abrasive and binder weight ratio formula weighing, mixing evenly placed within the mixer, put in a metal mold in the press molding of abrasive rough. Blank firing kiln dried and then into the firing temperature is generally about 1300 ℃. When using a welded low-melting binder, the firing temperature is lower than 1000 ℃. Then the provisions of the exact size and shape processing, final inspection products. Resin bonded abrasives are generally molded in the press at room temperature, there is also pressurized with heating in a hot-pressing process under heating conditions. After forming in the hardening furnace hardening. The phenolic resin as binder, the curing temperature is 180 ~ 200 ℃. Rubber bonded abrasives used mainly for mixing roll machine and rolled into thin slices, then use a die cutter punching molding; also some with loose material, into the inner metal mold press forming. After vulcanization molding vulcanization tank, a temperature of 165 ~ 180 ℃. Metal bonded abrasives manufacturing process, there are two powder metallurgy and plating method, mainly for superabrasive abrasive. Bronze powder metallurgy as the binding agent, or after mixing by hot press molding at room temperature, and then sintering processing. Plating with nickel or nickel-cobalt alloy as the metal plating, according to the abrasive bonded to a plating process on a substrate made of abrasive. Special varieties of sintered corundum abrasives and grinding with abrasive fibers and so on. Sintered corundum abrasive is alumina powder and the amount of chromium oxide mixing, forming, sintering at about 1800 ℃. This abrasive compact structure, high strength, mainly used for processing watches, instruments and other parts. Abrasive fibers are adhered or containing abrasive filaments (eg nylon) as the raw materials made of, its flexibility, materials and products used in metal polishing.

Cubic boron nitride (CBN) grinding wheel is grinding carbide

Cubic boron nitride (CBN) grinding wheel is grinding carbide , glass,

ceramics , precious stones high hard and brittle material effects tools in

recent years, with high-speed ultra-precision grinding grinding technology

rapid development of grinding wheels made ​​more high demand, ceramic resin

bonded grinding wheel can no longer meet
Production needs, because of its combination of metal bonded grinding wheel ,

high strength, good formability , long life and other significant

characteristics of the production has been widely used by metal-bonded

diamond wheels are manufactured in  abrasive wheel different ways there are sintered ,

plating two types , in order to give full play to the role of super abrasive

abroad from the 20th century, the early 90s with a high temperature brazing

process to develop a new wheel, which wheel is still in the research and

development stage .
The cutting tool is a grinding wheel , which consists of many small and hard

abrasive particles and adhesive bonding agent made ​​of the porous body .

Directly responsible abrasive cutting work must be sharp and has high

hardness, heat resistance and a toughness. Commonly used abrasive alumina (

also known as corundum ) and silicon carbide two kinds . Alumina-based

abrasive , high hardness, good toughness, suitable for grinding steel

material . Silicon carbide abrasive hardness is higher and more sharp , good

thermal conductivity , but more  PSA sanding disc  brittle , suitable for grinding cast iron and

carbide grinding wheel in the grinder as a cutting tool with the workpiece

machining side
France . The method is characterized by:
( 1) Since the abrasive grinding wheel itself has a high hardness and heat

resistance , high hardness can be processed so grinding materials such as

hardened steel , carbide, etc. . ( 2 ) determine the characteristics of the

grinding wheel and grinding grinding system can make even a trace cutting ,

general ap = 0.001 ~ 0.005mm; grinding speed is high , generally up to v = 30

~ 50m / s; grinder stiffness ; using hydraulic transmission, so grinding can

be obtained economically with high  grinding disc precision (IT6 ~ IT5) and a small surface

roughness (Ra = 0.8 ~ 0.2μm). Grinding is one of the main methods parts

finishing . ( 3 ) As intense friction , leaving the grinding zone temperature

is high. This will cause the workpiece to produce stress and deformation of

the workpiece surface and even cause burns . Therefore, a lot of grinding

coolant must be injected to reduce the grinding temperature . Also from the

coolant and lubrication chip . ( 4 ) grinding large radial forces . This will

cause the machine - grinding wheel - workpiece system flexibility retreat ,

the actual depth of cut less than the nominal depth of cut . Therefore, the

grinding will be completed when the light is not to be infeed grinding to

remove the error . ( 5 ) After blunt abrasive , grinding force also increased

, resulting in grain crushing or off, re- exposing the sharp edge , this

feature is called " self-sharpening ." Self-sharpening of the grinding head

in a certain period of time to normal, but over a certain working time should

be performed after manual trimming , grinding force increases so as to cause

vibration , noise, and damage the workpiece surface quality.

Read Abrasives science knowledge

Is for abrasive grinding , grinding and polishing tools . Most of the abrasive is made ​​of abrasive plus artificial abrasive binding agent , is also useful natural mineral rock directly processed into natural abrasive. In addition to grinding and other metal processing machinery manufacturing industry has been widely used , but also for food processing, paper grinding wheel china  industry and the ceramics, glass, stone, plastic , rubber, wood and other non-metal materials processing. Abrasive in use , when the blunt abrasive , because the abrasive agent or a combination of its own to break fracture , the abrasive grain from the partial or complete loss , the working surface of the abrasive grinding emerging new cutting edge , sharp or continuously exposing new abrasive grains , the abrasive can be maintained within a certain time cutting . This self -sharpening abrasive is abrasive tool compared with the general prominent feature .
As early as the Neolithic Age , humans had already started to process the application of natural stone knives , stone axes , bone , horn , and tools such as a tooth ; 1872 , appeared in the United States with natural abrasives combined with clay firing ceramic grinding wheel ; 1900 years ago, the advent of artificial abrasives , using artificial abrasives manufacturing have produced a variety of abrasives for grinding and grinding create the conditions for rapid development . Since then , natural abrasive in the abrasive proportion gradually reduced. Abrasives source of their raw materials , with natural and artificial abrasive abrasive categories. Commonly used in machinery industry is only natural abrasive Whetstone . Artificial abrasive characteristics according to the basic shape and structure of the distinction between a grinding wheel, grinding , stone, sand tile ( the foregoing collectively referred abrasive ) and coated abrasives five . In addition , it is customary also put abrasives abrasive as a class .
Bonded Abrasives are used by different abrasives can be divided into ordinary abrasive abrasive and superabrasive abrasive . The former corundum and silicon carbide and other common abrasive, the ceramic flap disc  latter with diamond and cubic boron nitride and other superhard abrasive material. In addition, there are some special varieties, such as sintered corundum abrasive and so on.
By ordinary abrasive abrasive abrasive solid binding agent to form a certain shape common , and has a certain strength abrasive. Generally abrasive , binder and pore structure, these three parts are frequently referred to as the three elements of abrasive .
Abrasive abrasive cutting action play . Binding agent is a solid form of the abrasive loose abrasive materials , with inorganic and organic types . Inorganic binder with ceramic , magnesite , sodium silicate and the like; organic a resin , rubber and shellac . One of the most commonly used is a ceramic , resin and rubber binding agent.
Holes in the ground when debris from the role of the chip and the chip , and can accommodate coolant, helps grinding heat dissipation . To meet the requirements of certain special processing , the  Bonded abrasives pores can be impregnated with certain fillers such as sulfur and paraffin , so as to improve the abrasive performance. Such fillers , also known as the fourth element of the abrasive . Means a common abrasive abrasive characteristics of the project are : shape, size abrasive , grain size, hardness, structure and bonding agent. Abrasive abrasive hardness refers to the external force from the abrasive surface of the shedding of degree of difficulty, it reflects the strength of binding agent holding abrasive . The hardness of the abrasive agent is added depends on the amount of binding and the density of abrasive , abrasive grains easily fall off indication low hardness ; vice versa , which means high hardness. Hardness level is generally divided into super-soft , soft, medium soft , medium, medium-hard , hard and superhard seven magnitude, from these levels can be subdivided in a number of small magnitude. Abrasive hardness measurement methods are more commonly used hand cone , mechanical cone method , Rockwell hardness measurement method and sandblasting assay .

Belt as abrasive belt grinding of the workpiece is processed

Belt as abrasive belt grinding of the workpiece is processed , a new way of grinding process because of electrostatic sand-planting to protect abrasive belt belt arranged in average , sharp end of the outward processing a small amount of abrasive cutting action can simultaneously non woven flap wheel  attack , the longer the abrasive belt circumference get good cooling , flexible belt easily adapted to different shape of the workpiece. abrasive belt grinding strengths , 1. consumption high effectiveness 2 . practical wide scale 3 . grinding good quality 4 . working capital is low.
 Belt grinding is " cold " grinding , difficult to burn ; almost everything Information: metals, non-metallic , wood , marble, red sapphire , etc. are practical belt grinding ; variety of appearance: such as large three-dimensional, with material in a variety of complex -shaped appearance , wire appearance , are also practical belt grinding .
Tensioning roller diameter of 150mm, mounted on the bracket 1 , the bracket 1 is connected to the chassis 2 . Adhesive side  abrasive cloth belt of the drive roller has a diameter of 200mm. Tensioning roller and the drive roller of the center distance of 500mm. Two cylinder length of 250mm in bracket 1 and frame 2 has two conditioning belt loose , tight installation. downward rotation wrench, ie, contraction spring , tensioner roller bracket with a landing ; then remove the bolts on the stationary frame 3 , the stationary machine curled up frame 3 . we put a ring belt width of 220mm , from passing through the stationary frame 3 , sub- glove tensioning rollers and drive rollers , fixed stationary frame 3 ; upward rotation wrench, namely spring elongation , together with the tensioning roller stand a rebound gradually belt is tensioned .
To avoid and overcome the belt deviation, tensioning rollers can influence , high and low skew , will attack an  roloc disc absolute sliding velocity , hurried back to the central position of the belt on .
Stationary belt for rotating the workpiece moves with the feed to the still walks , the workpiece is achieved through the processing of the grinding zone in this belt grinding machine, can be inconvenient to change the type of belt ( coarse , medium and fine ) , with with varying degrees of rough appearance , even to the mirror .

The belt caused by high energy

 Belt drive, including the belt, the belt belt housing accommodating the motor , the motor housing accommodating the motor , the handle , the driving wheel , a driven wheel and a driving wheel connected to said motor and transmission device , the motor housing integrally Sanding Sheets  connected with the handle to form a unit body , a connecting device is connected to the unit body shell belt , said belt unit body can be rotated about its axis of rotation , easy belt machine is located in a comfortable operating position , reducing operator length time work fatigue.
 Belt grinding wheel in addition to the same sliding friction , plowing and cutting action , there abrasive effect on the surface of the extrusion , and to the plastic deformation , chilled surface layer changes and tear, and because of friction the contact point temperature, flow , etc. caused by the combined effects of thermoplastic so , from  cutting and grinding disc this point of view, but also has grinding belt grinding , grinding and polishing of multiple role and this is what the surface of belt grinding good quality reasons .
 The presence of nano- phenolic resin , the dehydration of the drying stage belt titania dispersed in the phenolic resin , phenolic resin and the phenolic hydroxyl group of the substrate can be curved around the hydroxyl group is formed by an interpenetrating network of titanium alloy , so that the adhesive layer adhesive strength , toughness , heat resistance and seizing resistance is also greatly improved , improved abrasive belt grinding capacity and service life . abrasive belt grinding equipment belt grinding equipment in various forms in various forms , wide variety. its in  cut off wheel a variety of general-purpose device for belt grinding . universal belt grinding devices have small portable belt drive, all-around belt drive, desktop belt machine ; big a cylindrical abrasive belt grinding machine , flat belt grinder , centerless grinding machines and abrasive belt grinding machine inner circle , etc. there are special camshaft belt grinding profile grinding belt , industrial belt polishing mill tanks , automobile tire rims face belt throwing mill, motorcycle tank belt throwing mill, special stainless steel sinks hair machines.

Diamond main reason for tool wear

 When the other parameters constant, the corresponding cutting depth of each there is an optimal wheel speed; when the cutting depth and the wheel speed is constant, there is an optimal feed rate; various process parameters on the wheel radial wear of the primary and secondary effects order: wheel speed - cutting depth - feed speed. Tool wear and  grinding wheel machining process parameters and the coordination between process parameters have a great relationship, it is necessary to optimize the process parameters. ZJ Pei analyzed the situation when grinding wafers, the following conclusions: its combination of high strength, good formability, high temperature, thermal conductivity and good wear resistance, long life, can withstand greater loads. Wheel during the sintering process because there is inevitably shrinkage and deformation, so the use of the grinding wheel before shaping, it is difficult wheel dressing. When the grinding force reaches a certain value abrasive broken; when the wheel speed is 2175rpm, chuck speed of 40rpm, the wheel broken  abrasive paper sheet at the grinding force is small. Therefore, the grinding force is substantially constant and high wear rates. A diamond or cubic boron nitride (CBN) abrasive grinding wheel production, because of its excellent grinding performance, have been widely used in various fields of grinding. Diamond grinding wheel is grinding carbide, glass, ceramics, precious stones high brittle material effects tools.
(3) Work material
 Currently within the electroplated diamond dressing roller manufacturing method is to create sophisticated wheel-shaped face most effective way to set precision manufacturing technology, precision  cut off disc electroforming technology, precision measurement technology as a whole. This article describes the inner electroplated diamond wheel manufacturing and development. In recent years, with high-speed grinding and ultra-precision grinding technology, the rapid development of the wheel put forward higher requirements, ceramics and resin bonded grinding wheels can not meet the needs of production, because of its metal-bonded grinding wheel bond strength high, forming a good, long life and other significant characteristics of the production has been widely used.

Trace trim wheel to take

The success of the grinding wheel dressing technology secrets , to the greatest increase grinding wheel performance is the key factor is the good shaping and sharpening tools and skilled finishing  mini flap disc skills. If the tool is not firmly clamped , it will cause vibration noise , produce ripples in the part surface strain and damage parts of the surface dressing tools . Density unevenness and the quality of the wheel geometry , will affect the inherent balance wheel . This means that you must maintain the balance wheel .
Vibrations are trimmed enemies, in dressing the grinding wheel , effectively reduce the vibration and avoid dressing the wheel marks left on the surface , such as collision and damage to the dressing tool , is crucial. Only when the dry grinding wheel to take on a dry dressing . Using a filter for precision filtration of the cooling liquid , to avoid dirt or chips in multiple cycles of the coolant . Otherwise it would diamond dressing tools, hot and cold extreme temperature changes , cracks or broken. When the dressing tool and the wheel contact start trimming, never allow trimming tools from coolant exit. When the diamond grinding wheel dressing tools through when installing a coolant nozzle , fill the wheel surface , or to continue to raise the coolant diamond dressing tools . According to experience , the choice of one 3/8 inch diameter cooling fluid , can be excluded from a lot of heat on the dresser , extending the life of the dresser . Even faster speed of lateral movement of a good dressing wheel surface can improve the performance of grinding wheel , to increase the grinding efficiency and lower parts of the grinding wheel china  surface roughness . Slow lateral movement speed can also cause wheel vibration and burn parts of the surface . Lateral movement is too slow , it will block grinding , damage parts of the surface roughness and metal removal rates . It required surface roughness of machined parts and metal removal rates have played a key role.
Lateral movement speed by dressing tool in shaping the wheel surface speed. A multi- point contact of the dressing tool without tilt angle . The optimum amount of dressing after several repair addition , both the geometry of the wheel recovery , but also just produce good grinding blade as a criterion. This is a very wrong idea.
Taken to reduce trace trimming  Sanding Sheets trimming time , as if there is always a desire to select bigger depth repair except temptation . For internal grinder with grinding wheels, diamond dressing tools will be close to the highest point of cylindrical grinding wheel ( ie grinding holes Parts / wheel contact point ) to be trimmed , which is more important. The highest point of the cylindrical part and the highest point is called cylindrical grinding wheel parts / wheel contact point diamond dressing tools should be placed as close to the part / wheel contact point wheel dressing . For the chisel head and molding dressing tools , which normally takes before they blunt 180 ° to rotate once . Use a blunt tool to trim the dressing wheel surface , will make wheel blunt .

Abrasives business as long as the enterprise

Blog marketing concept can be said there is no strict definition, in simple terms, is to use the blog this form of online marketing network applications. It is the form of corporate blog, marketing blog, etc., is the blog administrator through the log in the form of  mini flap disc soft paper-like marketing hype, through corporate blog promotion and marketing blog to complete a marketing approach.
Internet hype
Internet hype in general is the use of online media, or by pushing the hand behind the man, launching online writers for a person or company, or institution two comments, one aspect is a positive effect on the other hand negative effects. Our companies can seize some opportunities to participate in public welfare activities such as company information such as speculation, to establish positive healthy image of our business, if  non woven flap wheel you can get a good effort to master the appropriate publicity, more effective.
Online Shop
In recent years the rise of business site, they can give their member companies to provide massive demand for information, products booth, corporate information, etc. also establish credibility through, Paypal and other online trading platform integrity, which greatly facilitates the enterprise and between enterprises, mutual trust between enterprises and users, and greatly to promote the rapid development of online business, enterprise and users a convenient bridge, which we show our coated abrasives business integrity, showcase our product image, promote the corporate image will essential platform for our business is a good channel to collect customer information, much closer cooperation between enterprises in the distance.
Abrasives business as long as the abrasive roll  enterprise website construction, based on a series of promotional measures by the above, will make it easier for customers to understand our company and establish a corporate image, promote the company's products eventually reach of enterprise customers and the public awareness and recognition

Electroplated diamond grinding wheel more extensive use

Electroplated diamond grinding wheel with diamond electroplated electroplated way to put on the wheel, diamond tools suitable for the opposite sex can be electroplated grinding wheel grinding and chamfer dimensions. After the sand, thickening step diamond particles fixed to the base body, the working surface is formed with a sharp diamond composite coating of nickel, a combination of strong, high grinding efficiency, the shape error is small. Electroplated diamond grinding wheel is by far the human invention extremely hard materials and tools, an endless variety of new materials can only be used hard before processing them, they are all kinds of high-tech materials and finished products to provide strong support for the development of There are several hundred times the national economic development leverage leveraging effect.
Such as:
1 optical glass industry electroplated diamond dig riving knife can be directly on the plate in the optical glass dig all kinds of optical instruments lens round billets. This is the first cut into the box before then gradually processed into a diamond grinding wheel round billet old process compared to a significant reduction in raw materials, reducing the  Mounted flap wheel process and improve the work efficiency.
 Emerging foreign manufactured by electroplating mesh soft grinding, these electroplated diamond products with diamond cup wheels, grinding wheels, diamond tools, such as fine films realized from cutting optical glass processing, cutting, grinding, edging to the convex surface of the grinding and polishing process of a series of comprehensive reform.
(2) mechanical processing industry
Electroplated diamond wheel trim molding has been successfully used with ordinary grinding wheel, or directly to velcro disc  the workpiece profile grinding. Is today the grinding profile grinding direction of technology development, the application of electroplated diamond wheel molding effectively promoted the development of this advanced technology grinding, diamond wheel has been in the automotive, aircraft, machinery manufacturing industry is widely used in machining the crankshaft, bearings, hydraulic valves, racks, gears, shafts between the grooves, steering knuckle, worm, screw taps, the cylinder of the piston ring grooves, steam turbine and gas turbine blade root slot, and so on. Diamond grinding head, grinding machining is widely used in a hard metal or hardened steel molds or parts of various shapes and inner bore surface.
3 Electrical and Electronics Industry
 Inner and outer circles of electroplated diamond cutting sheets are cut semiconductors, gems, jade and  Bonded abrasives other precious this hard and brittle materials, the best tools, and the like silicon germanium semiconductor material to be cut and polished using a wire saw cutting method inefficient, while the use of electroplated cutting disc sawing, not only efficient, but also narrow kerf less material loss.

The usefulness of organic abrasive

 Resin abrasive mainly used in steel, automobiles, bearings, railways, vehicles, shipbuilding, chemical, instrumentation, aerospace, building materials and other mechanical processing industries. Can be used for processing various non-metallic materials and metal materials. Such  abrasive belt as: wood, rubber, plastics, glass, ceramics, stone, copper, aluminum, cast iron, steel, etc., as well as cemented carbide, high speed steel, high vanadium steel, titanium steel, stainless steel and so on. In addition, food processing, medical and geological exploration and other fields have to be applied. According to the processing and usage of different purposes, can be shortage of grinding, roughing, semi-fine grinding, fine grinding, fine grinding and precision low roughness grinding. Meanwhile, according to the processing of different objects, for cylindrical grinding, internal grinding, surface grinding, tool grinding, special grinding, welding and grinding, honing, super finishing, grinding and polishing.
1, coarse roughing machining applications refers to the efficient cutting a lot of extra material as the main portable belt feature of the method of grinding. Snagging is widely used for processing many kinds of coarse commonly known. Rough machining applications: (a) resin shortage and high-speed heavy-duty resin grinding wheel grinding wheel, coarse annealed or annealed high-quality alloy steel or stainless steel billet Finishing. For surface appearance defects (weld cracks, oxide layer, etc.) grinding. (2) grinding wheel with the casting resin shortage of gates, risers and billet seam for grinding and general Finishing. 3) Resin grinding wheel shortage forging, forging gate renovated large burrs or burrs left to carry out a thorough sanding. (4) during the welding operation, the remaining surface of the weld seam to be used on a flat seam and an inverted snagging grinding. (5) of large plates cut into round air or other complex shapes, cutting the resulting  cut off wheel slag grinding mill waste to be used in addition to the portable. Such as: large hot-rolled structural shapes and tubes cut crude legitimate work and so on. Two, hand-held grinding applications handheld grinding grinding method is comprehensive summary. Their common feature is: whether it is supporting the workpiece or the workpiece grinding machinery in contact with the abrasive, guidance, and mobile have directly rely on manual. Hand grinding is divided into fixed and mobile handheld handheld grinding grinding. The grinding machine fixed, handheld grinding workpiece way, called a fixed-held grinding. Processing using a hand-held grinding machine for grinding a movable manner, referred to as mobile handheld grinding. Hand Grinding main application areas: (1) using portable grinding wheel resin shortage, processing large and bulky hard parts installed on the grinder. Such as: large castings coarse (2) high-speed cymbals shape grinding wheel or steel, paper, processing has been assembled with other 'parts of the workpiece. Such as: heavy construction components and ship components. (3) for small adjustments required for grinding. Such as: In large parts of the limited common position on calibration assembly.

Side grinding Question

Side grinding Question: grinders everyday use, we often find that some operators, regardless of the type of grinding machine, regardless of the type of wheel, casually on the side of the grinding wheel to use, this is a serious breach of security rules of conduct illegal abrasive belt  operations. Procedures used by the peripheral surface should not be used to do the side face of the grinding wheel, this wheel radial strength greater axial strength is small, the operator excessive force will cause wheel broken, even wounding, in the actual The use of the process should prohibit such behavior. Positive operational problems: in daily use, many operators facing the wheel always used to operate because this direction can be put into effect, in fact, this behavior is grinding machine operation should specifically prohibited behavior. Follow the rules, use the grinder grinding the workpiece, the standard abrasives  operator should stand on the side of the wheel, the front wheel must not be operated in order to avoid wheel faulty, or the wheel broken wheel flying flying out. Force operational issues: the use of the grinder, some operators, especially the younger operators, for the sake of grinding speed, force too much too fast, which is a very unsafe practices. Any wheel flat body has a certain intensity, doing so may cause the wheel broken, and even flying out, but  abrasive disc also a should be prohibited. Common operational problems: the actual daily operations, there are also so happens, someone rush production tasks, grab the working time, the two share a grinding machine simultaneously, which is a serious violation operational behavior, should be strictly prohibited . A grinder is not enough time, can be used to add grinders solution, and definitely not at the same time share a grinder.

the main grinding machine guards

Therefore, requiring great than or equal to 200mm straight sand loaded on the card office after hours should first conduct static balancing, wheel trimmed after shaping or imbalance found in the work, it should be repeated static balance.
Matching problem mainly refers to thin cutting wheel  the installation of the chuck and grinding wheel logistic problems. According to standards, wheel diameter not less than chuck is mounted sand office diameter of 1/3, and the corresponding provisions of the wheel wear to a diameter of 10mm diameter larger than the chuck should be replaced with a new wheel. So there is a chuck and grinding wheel matching problem, otherwise it will be the case, "big horse car" caused by equipment and material waste; "small horse cart" do not meet the safety requirements, could easily lead to accidents. Therefore, chuck and grinding wheel reasonable match, one can save  sandpaper roll the device, cut about materials; hand and meet the safe operation requirements. Furthermore, the wheel should be installed between the chuck chuck diameter greater than the diameter 2mm, 1mm ~ 2mm thick cushion.
Shield is the main grinding machine guards, whose role is: When the wheel at work for some reason destroyed, effectively covering the wheel debris, to ensure the safety of personnel. Grinding shield round and square shape, not exceed the maximum opening angle of 90 °; protective  grinding wheel manufacture cover is made of a steel tensile strength of not less than 415N/mm2. Replaced with new wheel when the protective cover installed to solid and reliable, and shields do not disassemble or discard. Gear grinding machine quiet panel is one of the main protective accessories, protective cover above the horizontal plane of the spindle opening is larger than or equal to 30 (must be set for this device.

grinding wheel dressing method

Comparative advantages and disadvantages: ① dressing for a long time, low efficiency, diamond knife life is not long, you need anytime grinding. ② modification of accuracy depends on the mother plate and the moving components of the manufacturing and mounting accuracy sanding roll  and motion uniformity. In mass production is difficult to maintain the consistency of tooth. ③ lower production costs
Scope: The most widely used for single-line and multi-line wheel dressing for ball screws, ball nut, acme screw, a small batch
Methods: metal roller extrusion trim
Brief Description: Wheel Material CrWMn, hardness 65HRC, on the rollers to open several flutes. Rolling wheel to sandpaper roll  slow down when repair, wheel driven synchronously rotating rollers, roller by squeezing the wheel surface grit crushed or make it fall off.
Comparative advantages and disadvantages: metal roller is easy to manufacture, low cost, requires a thread grinding wheel deceleration devices. After dressing the grinding of the workpiece surface roughness higher accuracy than diamond toothed wheel. Metal roller easy to  abrasive disc wear, lower life.
Scope: For single-piece, small-batch production, low-precision or high-precision screw thread trimming coarse modification. Requirements threaded grinding wheel spindle has sufficient rigidity.

Resin basic concepts of centerless grinding wheel

 Resin basic concepts of centerless grinding wheel, resin grinding wheel for centerless grinding is a highly productive method of precision machining, centerless grinder or in the inner and outer circle jig with a centerless grinder grinding workpiece external  sandpaper roll surface , called the support type centerless grinding. centerless cylindrical grinding and centerless grinding collectively support type centerless grinding.
In normal operation, the wheel rotates in the same direction, and introduction, the workpiece and the grinding wheel opposite to the steering. Typically, in order to feed the workpiece axial movement of the guide wire should be relatively wheel axle axis is inclined at an angle of guide wheel. Therefore, a single Hyperboloid similar shapes to ensure that the workpiece and the guide wheel of the line contact. However, if you  metal cutting wheel think that the movement of the workpiece depends entirely on the guide wheel, then this view is not entirely correct. Because the grinding process, the grinding short if the workpiece and the workpiece line speed of the wire guide wheel axle along the guide line speed changes, but the variation of the two entirely different. Therefore, not only the movement of the workpiece and the grinding wheel, guide wheel, and the wheel movement of the Bonded abrasives  material pallets, guide wheel motion, the grinding allowance, but also by the geometrical layout of centerless grinding. Thus, the movement of the grinding work, the guide wheel and the result of the combined effects of the pallet.

Grinding inner circle divided into the following four categories

Grinding inner circle divided into the following four categories: speed electric aerostatic bearing inner circle grinding, grinding inner circle of mechanical transmission, pneumatic and electric grinding inner circle inner circle grinding.
Aerostatic bearing speed electric grinding inner cutting and grinding disc  circle: The aerostatic bearing (supply pressure is 40 ~ 65MPa), grinding system rigidity, both electric grinding characteristics, speed up 180000R/MIN, suitable for grinding a ~ 10MM hole.
Inner circle grinding mechanical transmission: mainly by the spindle, bearings, sleeve body shell, flat supporting pulleys and other components. Then, after replacement of the long axis, is used to grind different bore diameter and length, for comparison, the use cut off wheel  of low speed, the speed is generally lower than 2000R/MIN.
Wind-driven inner circle grinding: spindle with a turbine driven by compressed air turbine rotates the spindle speed, spindle speed reaches 10000R/MIN. Moreover, small vibration, pressure can be adjusted stepless. And with regulators, filters and other accessories.
Electric grinding inner circle: A  abrasive cloth belt three-phase asynchronous motor direct drive, and another by a high-frequency electric motor driven spindle speed of up to 50000 ~ 90000R/MIN. Output power is larger, instantaneous overload, speed characteristics hard, little vibration.

brasive particle size

grinding tool surface roughness easier although guaranteed, but prone to chipping blade, serrated blade degree difficult to reduce. Tool edge ultra-precision machining requirements under the microscope at 500 times without chipping, so to optimize all aspects of  the grinding process, in order to obtain a perfect straight edge.
Abrasive powder particle size and  ceramic flap disc surface condition of the grinding disc grinding quality of
As can be seen, the coarse large impact on the blade, serrated edge grinding degree is large, basically difficult to grind the cutting edge without chipping; while the use of powder, the grinding blade after a few minutes that is changed have straight, zigzag degree tends to zero.
Newly manufactured grinding disc machining accuracy due to limitations of its disk roughness greater stability  cut off wheel for grinding have a certain influence. In addition, just coated abrasive particles in the disk itself is also poor contour. After a period of grinding, the high point on the disk surface is ground flat, the larger abrasive particles may also be broken or shovel from the disk, so that the contour of the abrasive grains is improved, the blade serrated reduced degree of stability. So for the blade or diamond tool grinding and other key processes, grinding disc must be in a stable on the disk.

Grinding is the most minor of a class of abrasive

Can be divided according to the ordinary abrasives abrasives (corundum and silicon carbide, etc.) and natural abrasive grinding wheels and superabrasive (diamond and cubic boron nitride) grinding wheel;
 Shape can be divided according to level grinding wheels, bevel wheel, cylindrical grinding wheels, cup wheels, disc wheel, etc.; binding agents can be classified according to the ceramic grinding wheel, resin grinding wheel, rubber wheel, metal grinding wheel. Characteristic  abrasive sanding belt parameters of the wheel with secondary abrasive, viscosity, hardness, binders, shape, size and so on.
As usually at high speed wheel task, so use should be stopped before turning experiments (to ensure tasks at the highest speed wheel will not break) and static equilibrium experiments (to avoid machine vibrations caused by the task). Wheel in the task for some time, you should stop grinding trimmed to restore function and correct geometry. Grinder with a grinding wheel is characterized by:
As violent friction, leaving the grinding zone temperature is high. This will form the stress and deformation of the workpiece occurs, even the formation of the workpiece appearance burns. Therefore necessary to inject a small amount of grinding coolant to reduce Mounted flap wheel  the grinding temperature. Coolant can also play the role of BTA and smooth. Grinding large radial forces. This will form a machine - wheel - workpiece flexibility piecemeal concessions, so practice cutting depth less than the nominal depth of cut. Thus grinding to be completed, you should not feed stop light grinding to eliminate errors.
After blunt abrasive, grinding force also increased, resulting in grain crushing or scattered, re-exposed sharp edge, this feature is called "self-sharpening." Self-sharpening grinding in a certain day within the normal stop, but beyond a certain task day after manual trimming should be stopped to avoid grinding force increases caused by vibration, noise  flap disc and damage the workpiece surface quality. As abrasive wheel itself has high hardness and heat resistance, and thus high hardness grinding can process information, such as hardened steel, carbide, etc.. Grinding wheel and the grinding process piecemeal resolution characteristics can be averaged trace cutting, general ap = 0.001 ~ 0.005mm; grinding speed is high, normal up to v = 30 ~ 50m / s; grinder stiffness; adopts hydraulic transmission, Thus grinding energy economically achieve high precision (IT6 ~ IT5) and the appearance of small roughness (Ra = 0.8 ~ 0.2μm). Grinding is one way of parts finishing secondary

Side grinding Question

 grinders everyday use, we often find that some operators, regardless of the type of grinding machine, regardless of the type of wheel, casually on the side of the grinding wheel to use, this is a serious breach of security rules of conduct illegal operations. Procedures used by the peripheral surface should not be used to do the side face of the grinding wheel, this wheel radial strength greater axial strength is small, the operator excessive force will cause wheel broken, even wounding, in the actual The use of the process should prohibit such behavior. Positive operational problems: in daily use, many operators facing the wheel always used to operate because this direction can be put into effect, in fact, this behavior is grinding machine operation should specifically prohibited behavior. Follow the rules, use the grinder grinding the workpiece, the operator should stand on the side of the wheel, the  portable belt front wheel must not be operated in order to avoid wheel faulty, or the wheel broken wheel flying flying out. Force operational issues: the use of the grinder, some operators, especially the younger operators, for the sake of grinding speed, force too much too fast, which is a very unsafe practices. Any wheel flat body has a certain intensity, doing so may cause the wheel broken, and  Sanding Sheets even flying out, but also a should be prohibited. Common operational problems: the actual daily operations, there are also so happens, someone rush production tasks, grab the working time, the two share a grinding machine simultaneously, which is a serious violation operational behavior, should be strictly prohibited . A grinder is not enough time, can be used to add grinders solution, and definitely not at the same time share a grinder.Any grinding wheel wear problems has its use of a certain wear requirements, wear reaches a certain level must be re-replacement of the grinding wheel. Not in order to save material, it requires the use of ultra-wear, which is a very unsafe violations. General rule, when the wheel wear to chuck diameter than the diameter of 10mm, it  DC wheel should be replaced with new wheel. Valid questions from the Treasury brought out a new wheel is not necessarily qualified wheel, or even buy a new wheel from the factory are not necessarily qualified wheel. Any wheel has its certain expiration date, the expiration date of use, it is qualified wheel; than valid to use, it is not necessarily qualified wheel. Statutes provides that "wheel should be used within the validity period, resin and rubber bonded grinding wheel storage after one year must be approved by rotation test, those who pass before using." Texture problems in the course, if we find the local wheel cracks should immediately stop using and re-replacement of the grinding wheel, grinding wheel to avoid crushing injury accident.

drilling one or more of the cutting blade

Cars and main differences between drilling, drilling one or more of the cutting blade; drilling edge on the cutting speed varies between 0 and the actual cutting speed, that is, the cutting speed, the  Sanding disc lower the more severe cutting conditions nevertheless twist drill center feed is still great. Drill bit along the blade edge geometry varies greatly (cutting angle, clearance angle, wedge angle, tilt angle). Sharp chisel bit different levels according to the axial force on the drill bit has a significant impact; space inside the hole is closed, the discharge of cuttings from the borehole is greatly hindered or periodically under the control chip cooling lubricant circulation can this situation be improved.
If successfully exploited when turning on the measured data to simulate the drilling process, then all of these  standard abrasives challenges as well as on the chip with the twist drill pilot survey conducted difficulties encountered can get a better solution.In order to take into account in the analysis of the drill along the drill blade edge geometry of the blade changes, drilling can be divided into concentric sectors (see Figure 3). If simply assumed to be a sector of the cutting performance is constant, then from a range with the corresponding cutting edge geometry and the data in the test data, must also be translated into the drill holes. The cutting force is all holes on the sum of all the sectors.

the edge of the grinding wheel surface to settle

1, the edge of the grinding wheel surface to settle.
Grinding bit before the first bit of the main cutting edge of the grinding wheel surface placed on a level surface, that is, to ensure the contact edge grinding surface, the blade to be ground. This is the bit position of the first step and the wheel relative to the position and then slowly to gracefully by grinding the surface.
2, the bit axis oblique to the  abrasive roll surface with the wheel angle of 60 °.
This angle is the angle of the drill front, then the angle is wrong, will directly affect the size and angle drill main cutting edge shape and chisel edge angle. This is the bit line and the wheel axis of the positional relationship between the surface, taking the line 60 °, this angle is generally more accurate to see. Here we note that  sanding paper roll the relative levels before the drill grinding and angular positions, both overall plans, do not neglect to settle edge gracefully degree angle, or the angle to gracefully while ignoring settle edge.
3, followed by the grinding edge back.
After contacting wheel edge, from the cutting edge to the back of the main mill, that is from the drill edge first came into contact with wheels, then slowly down along the entire flank wear. Drill cut can gently touch wheel, the first for a smaller amount of sharpening, and  cutting disc observe the spark uniformity, timely adjustment of hand size of the pressure, but also pay attention to the drill bit cool, not be allowed to wear too much, causing discoloration edge , and to the edge annealing. Discovery edge temperature is high, the drill should be promptly cooled.
4 blade to swing up and down the drill, drill the tail can not be warped.
This is a standard drill grinding operation, the main cutting edge to swing up and down on the wheel, that is, the front of the hand grip drill evenly to the surface of the wheel of the drill bit up and down. The hand grip part can not swing, but also to prevent the rear handle to the upturned, that can not drill the tail above the horizontal centerline Gao Qiao Yu wheel, otherwise it would blunt edge