Silicone mobile phone case mould

Silicone mobile phone case mouldWhat materials are used for manufacturing injection molds?As we all know, the choice of injection mold materials for injection molding determines its quality. Injection

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  • 型号: Silicone mobile phone case mould

Silicone mobile phone case mould


Silicone mobile phone case mould

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What materials are used for manufacturing injection molds?




As we all know, the choice of injection mold materials for injection molding determines its quality. Injection molding is an indispensable part of plastic molding processing. Its proportion in the total mold output is increasing year by year. According to statistics, the processing and manufacturing of injection molds It accounts for about 33% of the entire forming mold, so its position in the national economy is becoming more and more important. The main factors affecting the life of plastic parts are: mold structure, mold material, mold processing quality, mold working status, product part status, etc. In this process, the properties and heat treatment of the mold material itself play a vital role. Processing and manufacturing of ordinary injection mold materials.


At present, most carbon steel mold steels have a wide range of applications due to their low price, easy use, and certain mechanical properties. In addition to plastic mold steel, it also includes pre-hardened plastic mold steel and other mold steels. Among them, there are many mold steels. At present, the more commonly used are pre-hardened plastic mold steel, carburized plastic mold steel, and age-hardened plastic mold steel. Hardened plastic mold steel is the hardness rule applied when processing steel. This kind of steel has excellent cutting performance and can be directly processed into the cavity. Generally used in the processing of a large number of plastic products, such as mirror molds, etc., using 32~40HRC to calculate the hardness.


Selection, manufacturing and manufacturing of mold materials.


Superb polishing process function.


The quality of injection molded products is excellent, and the surface roughness of the cavity is required to be small. For example, the surface roughness of the injection mold cavity is required to be less than Ra0.1-0.25, the optical surface is required to be less than Ra0.01nm, and the cavity needs to be polished to reduce the surface roughness. Therefore, the selected steel requires less material impurities, uniform arrangement, no fiber orientation, and no pitting or orange peel defects during polishing.


Excellent thermal stability;


The shapes of parts in injection molds are often complicated and difficult to reprocess after quenching. Therefore, materials with good thermal stability should be selected as far as possible. After the plastic mold is formed and processed by heat treatment, the linear expansion coefficient is small, the heat treatment deformation is small, the standard change rate caused by the temperature difference is small, the metallographic arrangement and the standard mold are stable, the processing can be reduced or stopped, and the standard accuracy and surface of the plastic mold can be guaranteed Roughness requirements.