1. Factors to be considered in the design of Automotive mold

　　In order to maintain the accuracy of Automotive mold under the action of injection pressure and clamping force, the feasibility of grinding, grinding, and polishing the cavity part must be considered when designing the structure of Automotive mold. Although the processing of the cavity and core of the plastic injection mold has reached high precision requirements, the shrinkage rate is the same as expected; but due to the center offset during molding, the relevant dimensions of the inner and outer sides of the molded product cannot meet the design of the plastic part. Claim. In order to maintain the dimensional accuracy of the front and rear mold cavities on the parting surface, in addition to setting the universal guide post and guide sleeve centering,

　　2. Materials required for Automotive mold

　　The material for manufacturing Automotive mold should be high-quality alloy tool steel with high mechanical properties and low thermal creep. The mold material for manufacturing the cavity and runner should be a mold material that has undergone strict heat treatment, high hardness, good wear resistance, strong corrosion-resistance, and strong thermal deformation resistance. At the same time, the difficulty and economy of mechanical processing and electrical processing must be considered. In order to prevent the occurrence of aging changes and change the dimensional accuracy of the injection mold, it is necessary to specify the tempering treatment or low temperature treatment when designing the Automotive mold to reduce the residual structure of the heat treatment of the mold material.

　　For vulnerable parts of Automotive mold, especially vulnerable parts such as cavity and core, the possibility of repair should be considered in the design to maintain the high precision of the repaired mold.

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