Diamond (CBN) abrasive application technology

Just below the hardness of diamond CBN, diamond but with superior heat resistance and chemical inertness of the material of the iron group metals. Use it to make these excellent properties CBN abrasive grinding material made of, particularly suitable for grinding all types of iron group metal materials. It is mainly used for material processing and diamond hard and brittle complement each other, so that the scope of application of superhard materials greatly broadened. Compared to ordinary abrasive abrasive, CBN abrasive with high-speed, efficient processing of high quality, long life, low cost, high speed CNC grinding machine can be used as efficient tool of choice for high grinding disc  precision grinding. In the automotive industry, machine tools, bearings and so has a wide range of applications. 1, CBN in the nature of the material for grinding using CBN, we focus on its hardness, wear resistance, strength and thermal resistance and other properties.
CBN hardness is much higher than other conventional abrasives. High hardness means cutting stronger, sharper; CBN has a high abrasion resistance, meaning it harder than normal abrasive wear. The ability to maintain the shape of the grains is one of the main characteristics of a high-performance CBN abrasive; CBN high compressive strength, which means that when used under harsh conditions it can remain intact and not broken particles;
 CBN has good thermal conductivity, in the CBN grinding can be realized due to the different nature of certain cold and diamond cutting, the scope of their work material is different. CBN materials for processing tool steel, bearing steel, alloy steel, super alloys, cast iron. Diamond is a material suitable for processing carbide, glass, ceramic, cermet, iron 2, CBN grinding system
CBN grinding with different types of binding agent and the CBN bonded abrasive tool into a certain shape. It is only through rational grinding process, relying on the superiority of the grinder can, in order to maximize its effect. In the CBN grinding technology research and application, the CBN must be abrasive, grinding machines, parts, repair, cooling, grinding and other factors into a system to be optimized in order to obtain the best technical and economic results. CBN grinding technology several important factors to be considered are as follows. 2-1 CBN grinding abrasive in  ceramic belt the manufacture of primary consideration and selection of the shape, size, CBN abrasive particle size, concentration, type of binding agent and the use of speed and other parameters. CBN abrasive shapes, dimensions and marking by the standard GB/T6409.2-1996 and GB/T6409.1-1994; CBN abrasive four binder (resin, metal, ceramic, plating) in order to Vitrified fastest growing. This is due to the high ceramic CBN abrasive grinding efficiency, good shape retention, durability, ease of repair, wheel long life, thus becoming efficient, high-precision grinding abrasive of choice. Wheel concentration level indicates how much the number of grains in the grinding wheel during the grinding involved in the work surface. High concentrations can bring high grinding ratio and low surface roughness. If 200% of the concentration ratio of 100% concentration extend wheel life 4-5 times. The hardness of the abrasive binder level indicates the gripping force on the size of the abrasive. Uniformity and stability and hardness level of the rational choice is to ensure that the grinding wheel hardness important prerequisite for quality.
2-2 grinder grinding machine is the center of the grinding system, grinding performance with the most important influence on the grinding effects of CBN grinding particular. Wheel work to improve line speeds, can significantly improve grinding efficiency, grinding ratio and workpiece surface quality. 80 ~ 125m / s speed has become one of the use of domestic imports CBN special camshaft grinder basic features. Whenever possible, use a high speed is an important prerequisite to improve the technical and economic CBN grinding. And CBN grinding wheel speed grinding characteristics required to have the machine spindle and the overall high rigidity and excellent vibration resistance, CBN high-speed grinding technology which is the basic requirement for the grinder. Do not have such conditions, when the use of CBN grinding wheel, in order to obtain higher metal removal, geometric accuracy and surface  ceramic flap disc quality will deteriorate. Corrugated surface quality defects are common, which is generated by the vibration. The reason is that the machine can cause vibration of low rigidity, vibration, poor or grinding wheel design parameters caused by the irrational excessive force.
Using a diamond dressing wheel repair 2-3, dressing can not only improve the efficiency is more important obtain a good grinding wheel topography. Precision trimming device into the higher, the amount of each feed should be able to achieve micron level. Excessive trimming both mass will greatly reduce the impact of the grinding wheel life.
2-4 Cooling
Choose the right kind of coolant and cooling process parameters, tend to have a multiplier effect. 2-5 grinding process parameter optimization of grinding parameters can fully optimize the grinding efficiency, grinding and grinding costs, quality technical and economic indicators have reached equilibrium at a higher level.