Grinding PCD use resin or vitrified bond wheel?
PDC is a composite material formed by sintering diamond powder and carbide substrate under high temperature and high pressure. Its wear ratio generally reaches 130,000 ~ 400,000, and it is extremely difficult to process. When vitrified bonded diamond grinding wheels are converted into 10mm working layer, each wheel can grind about 120 piece PDC , while resin grinding wheel can only grind 100~120 piece PDC. In addition, vitrified bonded diamond wheel has the following five advantages over resin bonded diamond wheel in PDC processing: 1 ） The grinding efficiency of vitrified grinding wheel is 3 times more than resin grinding wheel; 2) the grinding wheel in the whole grinding process, in addition to the first grinding wheel surface edge, no need to repair. Resin grinding wheel must be dressed 7~12 times, otherwise grinding parts will not start; 3 ） The PDC processed by resin grinding wheel is projected into an isosceles trapezoid, one end of the diamond layer is...