We know that the quality of plastic processing and manufacturing injection molds depends to a certain extent on the materials used. Processing and manufacturing injection molds are essential components of plastic molding and processing, and their proportion in the total mold output value has been increasing year by year. According to statistics, processing and manufacturing injection molds account for about 33% of the total number of injection molds. Therefore, the application of processing and manufacturing injection molds in the national economy is becoming increasingly important. The main factors affecting the lifespan of plastic molds include mold structure, mold materials, mold processing quality, mold working conditions, and product parts. The characteristics and heat treatment of the mold material itself play a crucial role in this process. Commonly used materials for processing and manufacturing injection molds

Nowadays, most carbon steel molds are widely used because of their low price, convenient use, and certain mechanical functions. In addition to plastic mold steel, it also includes other mold steels such as pre hardened plastic mold steel. There are many types of mold steels, and currently the commonly used mold steels include pre hardened plastic mold steel, carburized plastic mold steel, and age hardened plastic mold steel. Pre hardened plastic mold steel is the standard hardness used for processing steel, and this type of steel has excellent cutting and processing functions, which can be directly processed into cavities. Usually used in the processing of a large number of plastic products, such as mirror molds, a hardness planning of 32 to 40HRC is used.