Mold process: the mold is heat treated during the manufacturing process

The heat treatment of the mold in the manufacturing process is a process that most molds have been used for a long time. Since the 1970s, the idea of ​​pre-hardening has been proposed internationally, but due to the rigidity of the machine tool and the constraints of the cutting tool, the pre-hardening The hardness of the mold cannot reach the hardness of the mold, so the research and development of the pre-hardening technology is not large. With the improvement of the performance of machine tools and cutting tools, the development of pre-hardening technology for mold materials has accelerated. By the 1980s, the proportion of pre-hardened modules used in plastic molds in industrialized countries in the world has reached 30% (currently More than 60%). In the mid-to-late 1990s, China began to use pre-hardened modules (mainly imported products).

Pre-hardening technology for mold materials is mainly developed and implemented by mold material manufacturers. By adjusting the chemical composition of the steel and equipped with the corresponding heat treatment equipment, it is possible to mass produce pre-hardened modules of stable quality. In China, the pre-hardening technology of mold materials started late and has a small scale. At present, it cannot meet the requirements of domestic mold manufacturing.

The use of pre-hardened mold materials can simplify the mold manufacturing process, shorten the manufacturing cycle of the mold, and improve the manufacturing precision of the mold. It is foreseeable that as processing technology advances, pre-hardened mold materials will be used for more mold types.

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