In the recent decade, our country and some industrial developed countries pay special attention to the production and application of diamond polycrystalline composite sheet. And competing development and production, many varieties and specifications, and gradually popularized at home and abroad, are due to its very excellent performance:

High hardness and wear resistance

 Hardness up to HV7500-9000, second only to diamond, much higher than the hardness of cemented carbide and engineering ceramics, and hardness and wear resistance in all directions consistent, no need to select the direction. Its strength is supported by high toughness cemented carbide, so the composite flexural strength can reach 1500Mpa.

 Wear resistance is generally 60-80 times that of Cemented Carbide, and the durability is very high when cutting non-metallic materials with high hardness.

Low friction coefficient

 The coefficient of friction between polycrystalline diamond and some non-ferrous metals is lower than that of other materials, about 1/2 of that of cemented carbide. The low coefficient of friction reduces the cutting force and deformation, does not produce accumulation of chipping tumors during cutting, and reduces the roughness of the machined surface.

High thermal conductivity

 The thermal conductivity of polycrystalline diamond is very high, much higher than that of silver, copper and general cemented carbide. Therefore, in the cutting process, the cutting heat can be easily dissipated, so the cutting temperature is low, which can improve the durability of the tool.

 High machining precision

 Because polycrystalline diamond has a low coefficient of thermal expansion and high modulus of elasticity, and the tool is not easy to be deformed during the cutting process, the tool can maintain its original parameters under the action of cutting force, and keep sharp for a long time, with high cutting precision. Therefore, when using diamond composite chip tools for machining, the machining precision is high and good machining surface can be obtained.