Covalent bond diamond crystals embedded in the combined form the skeleton of the bridge

CNC machine tools has become a major modern manufacturing equipment, efficient cutting has become the mainstream of modern manufacturing, it is made ​​up of the synchronization tool  polycrystalline diamond together to promote the processing technology, and  synthetic diamond diamond (PCD) cutting tools in which to play the indispensable role. PCD composite sheet is made from natural or synthetic diamond powder and the binding agent (which contains cobalt, nickel and other metals) by a  Diamond blade in high temperature, high pressure sintering. In the sintering process, due to binding agent is added, between the diamond crystals to form TiC, S iC, Fe, Co, N i components of the combination as the main bridge, diamond crystals to form a covalent bond with the bridge mounted on the skeleton of the structure of the binding force and the direction is very strong, so that the PCD has a very high hardness, it is necessary to adopt a special processing technology. Currently, the main use of the composite sheet machining PCD EDM wire cutting, laser processing, ultrasonic machining, high-pressure water jet technology, such as several methods.