Pre-alloyed powder and diamond diffusion connection
Starting from the birth of synthetic diamond in 1954, diamond saw blades have been widely used in stone processing. In recent years, the number of synthetic diamonds used in the stone processing industry has been on the rise, and its consumption has accounted for the total output of synthetic diamonds in the country. 90% or so. According to domestic and foreign statistics, it is estimated that about 70% of the world's industrial diamonds are used to manufacture stone processing tools, and the majority of them are diamond saw blades.
During the use of diamond circular saw blades, the utilization of diamond is relatively low. This is because the diamond in the cutter head does not wear out but it is lost in large amounts in the form of shedding. The traditional diamond cutter head manufactures the diamond by holding the diamond by the carcass. When the carcass is worn and the diamond exposed height is high, the diamond will fall off on its own. Increasing the binding force between the carcass and the diamond is the most effective technical measure to avoid the premature shedding of diamond.
The use of pre-alloyed powders to achieve diffusion brazing of diamond is an effective way to increase the bond between diamond and carcass. The addition of chromium, titanium, vanadium, zirconium, nickel, manganese and other metals to the prealloyed powder can improve the wettability of the alloy to the diamond, increase the cutting edge height of the diamond, and increase the utilization rate of the diamond; on the other hand, the pre-alloyed powder works. The chemical composition is stable, which overcomes the segregation of the specific gravity of the mechanical mixed powder, the melting and enrichment of low-melting-point metals, the oxidation-prone and volatile metals, and the factors that affect the performance of the carcass during the sintering process, thus ensuring the diamond cutter head Stability and consistency.