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Author: MULAN -Plastic Molding Manufacturer
Plastic injection mold, also called injection molding, is a method of injection molding. The advantages of injection molds are faster production speed, higher efficiency, automatic operation, diverse designs, simple to complex shapes, large to small sizes, accurate product sizes, easy product upgrades, and complex shapes. Part and mold injection molding is suitable for mass production, products with complex shapes, and other areas of forming and processing.
At a certain temperature, the completely melted plastic material is stirred with a screw, injected into the mold cavity under high pressure, cooled and solidified, and a molded product is obtained. This method of injection mold processing manufacturers is suitable for mass production of complex shapes and is one of the important processing methods. In recent years, injection molding vacuum heat treatment technology has been developed, which is a new type of heat treatment technology.
Its characteristics are exactly what is required for precision mold production. The hot spots of injection molds include avoiding thermal oxidative decarburization, vacuum degassing or degassing, eliminating hydrogen embrittlement, improving the plasticity, resistance and fatigue strength of materials, etc. Vacuum heating is slow, and the temperature difference between the surface of the part and the surface of the part is small, which determines that the deformation of the part formed by the vacuum heat treatment technology is small.
The mold was successfully developed, and the intelligent heat treatment of the injection mold was realized by using computer simulation technology. Vacuum oil-cooled quenching, vacuum air-cooled quenching and vacuum tempering are mainly used. The selection and formula of cooling liquid and cooling technology are very important to observe the excellent performance of vacuum heating of the workpiece, while oil quenching and air cooling are the choices in the mold quenching process.
For the working surface of the mold that is no longer processed after injection molding heat treatment, vacuum tempering should be used as much as possible after quenching, especially for vacuum quenched workpieces, to improve the mechanical properties related to surface quality.