At present, cans used in the can manufacturing industry are double-punched and undercuts, all made of Cr12MoV or Cr12. Die steel hardness HRC58 ~ 62, edge wear resistance is relatively poor, punching only about 1 million times can not be used. In view of this situation, after repeated research and trials, our company adopted the latest domestic technology, inlay technology, and selected refractory metal carbide as the cutting edge, hardness HRA88 or more, and the number of blanking was 500 to 6 million times, which greatly improved Die service life. However, because of the high hardness of refractory metal carbides, the processing is difficult, and the price is expensive. Therefore, the outer jacket is made of common die steel to make it match with the refractory metal carbides to form a composite mold.
The use of this new technology to produce molds, greatly increased the number of blanking, and reduce costs, welcomed by the majority of users.