1, the working conditions of plastic mold
Due to the development of plastics and plastic molding industry, plastic mould and high quality requirements of and failure of plastic mold and its affecting factors have become important research topics. Plastic molded parts is the main working parts, such as punch, die, they form plastic mold cavity to molded plastic surfaces and direct contact with the plastic, withstand pressure, temperature, corrosion and friction, and so on.
2, failure analysis of plastic materials
General mold manufacture including mould design, selection of materials, heat treatment, machining, commissioning and installation process. According to the survey: factors in the failure, molds used are the main factors affecting the service life of materials and heat treatment. From the perspective of total quality management, cannot die service life influence factors as polynomials and measured, but rather the product of many factors, so that the mould material and heat treatment quality is especially important in mold manufacturing process as a whole.
From the prevalence of failure analysis, plastic mold in service, may wear failure, local deformation and fracture. Important failure of plastic mold forms can be divided into failure, and local plastic deformation and fracture failure.
3, performance requirements with the development manufacturing plastic die steel, plastic molds are indispensable tools in the plastic molding and processing, in the mold of total yield as a percentage of increase year by year, along with the production and development of high-performance plastics, kinds of plastic products increased, uses continue to broaden products to precise, becoming large and complex development. Production to the high speed development, mold's working conditions are more complex.