The sintering of synthetic diamond tool materials by the EDM process has more outstanding characteristics.

With the increase in temperature and holding time, the strength loss and brittleness tendency of synthetic diamond is increasing. In order to retain more of the strength characteristics of synthetic diamond, the sintering temperature and the holding time should be shortened as much as possible. The general hot pressing sintering method or cold pressing sintering method is used to manufacture the diamond saw blade, and the sintering temperature is different according to different bonding materials. It takes several minutes to tens of minutes to complete sintering at high temperatures above 700°C. Diamond saw blades are mostly used for cutting stone, glass, gemstones, etc., and are sintered by electric spark. Due to the short time, the degree of brittleness of diamond is small, and the bonding strength is much stronger than brazing. The phenomenon of peeling during use; compared with ordinary sintering method , Abrasion resistance can be increased by 15%.

On geological drill bits, the electric spark sintering method has been used abroad to reinforce the supporting part of the drill tooth of the petroleum drill bit, that is, the part in contact with the hole wall. At the same time, the use of electric spark sintering to make the cutting edges of petroleum drills is also underway.

As a result, the use of the electric spark sintering method in the geological prospecting industry has become possible, and the current work is to expand the application range of the electric spark sintering process. It won’t take a long time. EDM sintering will definitely become an important production process in the production of synthetic diamond drills for prospecting. The synthetic diamond drills produced by this process are not only excellent in performance, but also economical. To a satisfactory result.