The main material of PCD tool is diamond powder, which is produced under high temperature and high pressure with a certain amount of metal such as ferrosilicon and bonding agent. The hardness is more than 100 times that of ordinary carbide tools. It can reach >8000HV. The thermal conductivity is also 6,7 times higher. PCD tools are mainly used in the following two aspects: 1. Processing of non-ferrous metal materials that are difficult to process: When using ordinary tools to process non-ferrous metal materials that are difficult to process, defects such as easy wear of the tool and low processing efficiency often occur, while PCD tools can show good processing performance. For example, PCD tools can be used to effectively process a new type of engine piston material-hypereutectic silicon aluminum alloy (a breakthrough has been made in the research on the processing mechanism of this material). 2. Processing of non-metallic materials that are difficult to process: PCD tools are very suitable for processing non-metallic materials that are difficult to process, such as stone, hard carbon, carbon fiber reinforced plastic (CFRP), and man-made plates.