The diamond saw blade segment is a special powder metallurgy product processed from diamond and metal powder, and it has borrowed some methods and methods from conventional powder metallurgy in manufacturing. However, due to the particularity of diamond and the complexity and variability of processing objects, it is more difficult to measure by mechanical performance standards than ordinary powder metallurgy products. The factor that has a greater impact on the performance of the segment is the binder. The following factors should be considered in the selection of segment binder in production research :1. Ability to hold diamonds;2. For different processing objects, the coordination and synchronization of diamond and bond wear resistance;3. Suitable manufacturing process conditions;4. Reasonable cost. The holding power of the bond to the diamond has mechanical holding power and chemical holding power. The mechanical holding force is mainly determined by the elastic modulus of the binder. Elements that increase the elastic modulus of materials such as Cr, Mn, W or WC hard phase can increase the holding force and increase the wear resistance at the same time. Of course, too high abrasion resistance is not conducive to the diamond edge. Chemical holding force is formed by welding or chemical bond between diamond and bond. It can not only increase the life of the cutter head, but also increase the protrusion height of the diamond on the surface of the cutter head, form a larger space for cuttings, and improve cutting efficiency. To improve the chemical holding power is to increase the wettability and bonding of the bond to the diamond. The strong carbide forming elements Ti, Cr, etc. can induce the bonding agent to wet the diamond and bond with the diamond to form carbides to increase the bonding force. Of course, these primary colors also corrode diamond, easily coarsening carbides, producing cracks or pores, and deteriorating cutting performance.
