Artificial polycrystalline diamond (PCD) under high temperature and high pressure will be added to the diamond powder into a polycrystalline material. Under normal circumstances made of carbide as a whole matrix round piece, known as polycrystalline diamond composite sheet. According to the different thickness of diamond matrix, composite tablets are 1.6mm, 3.2mm, 4.8mm and other different specifications. And polycrystalline diamond thickness is generally about 0.5mm. At present, the domestic production of PCD diameter has reached 19mm, while foreign companies such as GE * large composite film diameter has been done 58mm, De Beers company reached 74mm.

    According to the production of tools need to use laser or wire cutting cut into different sizes of angle head, made of turning tools, boring tools, milling cutter and so on.

    PCD hardness is lower than natural diamond (HV6000 or so), but the bending strength is much higher than natural diamond. In addition, by adjusting the diamond powder particle size concentration, so that PCD products mechanical and physical properties change to meet the different materials, different processing environment needs for the tool users to provide a variety of options.

    PCD tool than natural diamond shock resistance seismic performance is much higher. Compared with the cemented carbide, the hardness is 3-4 times higher; the wear resistance is 50-100 times higher; the cutting speed can be increased by 5-20 times; the roughness can reach Ra0.05μm. Cutting efficiency, processing accuracy and stability.

    PCD with natural diamond, not suitable for processing steel cast iron. This tool is mainly used for processing non-ferrous metals and non-metallic materials, such as: aluminum, copper, zinc, gold, silver, platinum and its alloys, as well as ceramics, carbon fiber, rubber, plastic and so on. PCD Another major function of wood processing stone.