Precision plastic mold

Precision plastic mold processing:

The working conditions of precision plastic mold processing are different from that of cold punching dies. Generally, they must be worked at 150°C-200°C. In addition to being subjected to certain pressure, they also have to withstand temperature. According to the different use conditions and processing methods of plastic molding molds, the basic performance requirements of plastic mold steel are roughly summarized as follows:

1. Sufficient surface hardness and wear resistance

The hardness of the plastic mold is usually below 50-60HRC, and the heat-treated mold should have sufficient surface hardness to ensure that the mold has sufficient rigidity. When the mold is working, due to the filling and flow of plastic, it has to withstand greater compressive stress and friction. It is required that the mold maintain the accuracy of shape and the stability of dimensional accuracy to ensure that the mold has sufficient service life. The wear resistance of the mold depends on the chemical composition and heat treatment hardness of the steel, so increasing the hardness of the mold is beneficial to improve its wear resistance.