PCD polycrystalline diamond tool welding process

PCD composite sheet and the cutter body in addition to the combination of mechanical clamping means and the bonding method, most of the way through the brazing composite sheet PCD  cubic boron nitride in the cemented carbide substrate. Welding methods include laser welding, vacuum diffusion welding, vacuum brazing, high frequency induction brazing. Currently, less investment, low cost high frequency induction heating brazed PCD inserts are widely used in welding. The blade welding process, the welding  cutting tools , the choice of flux and solder alloy weld will directly affect the performance of the tool. In the welding process, the welding temperature control is very important, such as welding temperature is too low, the welding strength is insufficient; such as welding temperature, PCD easily abrasive wheels , and may lead to "over-burning" effect PCD and cemented carbide composite sheet substrate binding. In the actual processing, according to the holding time and the degree of difficulty PCD red to control the welding temperature (generally be less than 700 ℃). Use more foreign high-frequency welding automatic welding process, welding, high efficiency, good quality, enabling continuous production; country is to use more manual welding, production efficiency is low, the quality is not ideal.