The used life of mould in production is closely relative to the feature level, material quality , fit use or not and the technics of heat treatment and so on .

Except hydrogen: will the metal parts in certain temperatures heat treatment method, or use other to ward off in electroplating production process in the process of hydrogen internal metal absorption.

Since the invention of the induction heating power supply, it has been rapidly applied to the every area of national production for its advantages in the industrial heat treatment.