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 .