Research and analysis of the development and application of diamond tools show that the application of coated diamond tools is of great significance to the development of diamond tools.

The application and development of coated diamond tools. Diamond plating is to coat a layer of affinity metal (Ti, Cr, W, Mo, etc.) on the surface of diamond. These affinity metal coatings can produce strong bonds with diamonds. Together, the metal coating can be brazed and combined with the metal carcass. Therefore, the comprehensive function of the plating layer is to form a "chemical/metallurgical bond" with the diamond and the matrix. Plating technology first started in the 1970s, and gained a new understanding and development in the 1990s. Its advantage lies in the formation of a chemical bond between the plating layer and the diamond, and a brazing combination with the surrounding carcass to improve the holding power of the diamond tool matrix and the diamond. Using titanium-coated diamonds, at a diamond concentration of 23%, a Y 400 saw blade is made in the cobalt-substituting matrix to cut granite. Compared with unplated diamond saw blades, the sawing efficiency is increased by 50% under the same life conditions. Diamond is plated with different metals, and then analyzed by X-ray diffraction studies. It is shown that various carbides are formed on the surface of diamond, resulting in new chemical bonds, such as TiC, Cr3C2, Cr7C3, WC, W2C, MoC, Mo2C, etc. Improve the diamond holding power, the diamond particles and the matrix metal form a "chemical/metallurgical bond", increase the bonding strength between the diamond and the matrix, and can resist the oxidation and graphitization of the diamond, improve the service life of the diamond tool, and improve The performance of diamond tools.