What material is the injection mold made of?

What material is the injection mold made of? Injection mold is a vital tool in the plastic processing industry, and its material selection directly determines the performance, life and quality of the injection mold. The following is a detailed analysis of the material selection for injection moulds: First of all, the material of the injection mold must have basic characteristics such as high strength, high wear resistance and high hardness to cope with high pressure, high temperature and frequent friction during the injection process. Common injection mold materials include metal and non-metal two categories, described in detail below: (1) Among metal materials, steel is the most commonly used choice. Different types of steel have different characteristics and are suitable for different injection molding needs. For example, pre-hardened steel such as P-20, which has good strength and wear resistance, while having excellent processing properties, is a common material for making injection molds. For molds that require higher hardness and wear resistance, you can choose tool steel, such as NAK80, which has excellent rigidity and wear resistance, and is especially suitable for making injection molds with complex structures. In addition, hot work die steel such as H-13 is also commonly used in the production of injection molds, its high temperature and wear resistance is excellent, can withstand the high temperature and high pressure in the injection process. (2) Among non-metallic materials, resin and glass fiber composite materials are also gradually applied to the production of injection molds. These materials have the advantages of light weight, short processing cycle and low cost, and are especially suitable for making injection molds with small and complex structures. However, their strength and wear resistance are slightly inferior to metal materials, so they may be limited in terms of service life and injection product accuracy. When selecting injection mold materials, it is also necessary to consider the structure of the mold and the requirements of the injection molding product. For example, for injection molding products requiring high precision and high gloss, mold materials with good processing performance and high surface quality should be selected; For the injection molding process that needs to withstand high pressure and high temperature, mold materials with excellent strength and high temperature resistance should be selected. In summary, the material selection of injection mold is a comprehensive consideration process, which needs to be determined according to the actual needs and use environment. With the continuous progress of science and technology and the continuous innovation of materials, the material selection of injection molds in the future will be more diversified and efficient.