In the welding process of the diamond layer on the composite sheet to control the temperature of 700

Department of polycrystalline diamond cutters carbide composite sheet welded to the pillar structure, the manufacturing oil drilling with a drill  abrasive grinding   Polycrystalline  cutting tools on the composite sheet of the failure temperature of '700 'E. Failure temperature than the diamond layer and the cemented carbide with surface easy to crack,  abrasive wheels of the diamond will decrease because of graphitization. Thus, the welding process of the diamond layer on the composite sheet to control the temperature of 700 * (2 or less, and require post-weld between the composite sheet and the carbide pillar sufficient shear strength to the composite sheet can not work in the underground long fail