Polycrystalline Diamond Tool Manufacturing Process

The manufacturing process of PCD cutting tools mainly includes two stages: ① Manufacturing of PCD composite sheet: PCD composite sheet is made of natural or synthetic diamond powder and binder (containing cobalt, nickel and other metals) in a certain proportion at high temperature (1000～2000) ℃), sintered under high pressure (50,000 to 100,000 atmospheres). During the sintering process, due to the addition of the bonding agent, a bonding bridge with TiC, SiC, Fe, Co, Ni, etc. as the main components is formed between the diamond crystals, and the diamond crystals are embedded in the framework of the bonding bridge in the form of covalent bonds. Usually the composite sheet is made into a disc with a fixed diameter and thickness, and the sintered composite sheet needs to be ground and polished and other corresponding physical and chemical treatments. ②Processing of PCD blade: The processing of PCD blade mainly includes the steps of cutting the composite sheet, welding the blade, and sharpening the blade.