Injection mold processing What are the requirements for raw materials in plastic mold production?

1. Sufficient contour hardness and abrasion resistance The hardness of Changsha plastic mold is often below 50-60HRC. The mold undergoing heat treatment should have sufficient contour hardness to ensure that the mold has sufficient rigidity. The mold is working because the filling and movement of plastic will suffer greater pressure stress and friction. It is called on the mold to strive for the stability of the form accuracy and dimensional accuracy, so as to ensure that the mold has sufficient service life. The wear resistance of the die depends on the chemical factors and heat treatment hardness of the steel, so the hardness of the progressive die is conducive to its wear resistance. 2. Most plastic molding dies have outstanding machinability. In addition to EMD processing tables, certain cutting and fitter repair are required. In order to extend the service life of cutting tools, aggressive cutting instinct, and reduce the roughness of contour, the hardness of steel used for plastic mold in Changsha must be consistent. 3. The excellent injection molding workshop can throw away the waste products from the plastic molding workshop with high morality, which calls for the roughness of the cavity surface. For example, the surface roughness of the injection mold cavity is required to be less than Ra0.1~0.25, and the optical surface is required to be Ra<0.01nm. The cavity must be polished to reduce the surface roughness. For this reason, the steel selected calls for less material impurities, uniform processing of finished structural plastics, no fiber targeting, and no pitting or orange peel defects should be revealed when throwing light. 4. The parts of the excellent thermal tranquility plastic injection mold are larger than before, which is difficult to process after quenching. Therefore, try to choose the equipment with excellent thermal tranquility. When the mold is formed and processed after heat treatment, due to the low linear shrinkage coefficient, the heat treatment deformation, the size conversion rate caused by temperature difference is low, and the metallography Injection mould The processing machine and the mold size are quiet, which can save or stop processing, thus ensuring the mold size accuracy and contour roughness.