Method for processing polycrystalline diamond for diamond processing

The invention provides a method for processing polycrystalline diamond for diamond processing. The method comprises the following steps of: mixing diamond powder and metal nickel serving as basic raw materials with a certain amount of boron, and adding the mixture into a carbon synthetic die; heating the synthetic die in a vacuum furnace in vacuum; putting a vacuum heated semi-finished product into a diamond hexa-orientation press for high temperature high pressure synthesis, and releasing pressure to obtain the polycrystalline diamond PCD for diamond processing. When the polycrystalline diamond PCD prepared by the technical scheme is used for processing the diamond, the product is soft, and has good impact toughness and higher abrasion resistance. Compared with polycrystalline diamond TSP series for petroleum and core bits, the polycrystalline diamond PCD has much lower abrasion consumption; and compared with natural diamond, the polycrystalline diamond PCD has higher grinding efficiency. Furthermore, the pr