Some matters should be paid attention to when selecting and polishing plastic injection molding tools. What are the key points of material selection and polishing for injection molding

The injection molding materials with high polish, high requirements and high corrosion resistance are used for injection molding processing. Generally, they are refined outside the furnace+electroslag remelting, with good corrosion resistance, polishing, wear resistance, processing and dimensional stability during quenching. Customized manufacturers of plastic injection molding process all require The transparent injection mold shall be made of steel with a heat treatment hardness of about HRC52, otherwise it will be easy to damage. Therefore, the selected steel shall not only have good heat treatment characteristics, but also have good processability under high hardness conditions. Of course, there are other considerations

The appearance requirements of injection molding products have a great influence on the selection of injection molding materials. Transparent parts and surfaces need mirror products, so high transparency mold S136 should be selected, followed by 420, and there are strong corrosive plastics, which are common mirror anti rust mold injection materials

There are many opportunities for polishing the injection molding of transparent parts. For example, when polishing, a little shadow will be found on the surface of the mold, like air holes, which will lead to the refraction of transparent parts to see subtle ideas. Many plastic injection molding processing enterprises will say that the material structure is loose. In fact, good materials need to be refined and heat treated to get a good organizational structure, but the content of impurities (phosphorus and sulfur) in the materials cannot be ignored, These impurities are usually the main reason for a little shadow on the injection surface of the mold. Now good materials contain phosphorus and sulfur at< 0.03%, and the phosphorus and sulfur content of some imported mold injection materials remain at< 0.003%。 It can be seen that the selection of materials is very important