General mold manufacturing includes mold design, selection of materials, heat treatment, machining, debugging and installation processes. According to the investigation, the material used and heat treatment are the main factors affecting the service life of the die.

From the perspective of total quality management, the factors affecting the service life of the die can not be measured as a polynomial sum, but should be the product of many factors, so the quality of the die material and heat treatment in the whole die manufacturing process is particularly important.

From the analysis of common phenomenon of mold failure, wear failure, local deformation failure and fracture failure may occur in the process of service of injection mold. The important failure forms of injection mold can be divided into wear failure, local plastic deformation failure and fracture failure.