In the stamping die, there are mainly high precision metal stampings and high precision non-metal material stamping dies, mainly carbon steel, alloy steel, cast iron, cast steel, hard alloy, low melting point alloy, zinc-based alloy, aluminum bronze, synthetic resin, poly grease rubber, plastic, laminated birch board, etc.
The material for manufacturing the mold is required to have high hardness, high strength, high wear resistance, appropriate toughness, high hardenability, and heat treatment without deformation (or less deformation) and difficulty in cracking during quenching.
Reasonable selection of mold materials and implementation of the correct heat treatment process are the key to ensuring the life of the mold. For different molds, it should be considered according to its working condition, stress conditions and properties of the materials to be processed, production batch and productivity, etc., and focus on the performance of the above requirements, and then make steel grade and heat treatment. The corresponding choice of the process.
When the production quantity of the stamping parts is large, the material of the punch and the die of the working parts of the mold should be selected from high-quality and wear-resistant mold steel. The other process structural parts of the mold and the part materials of the auxiliary structural part are also correspondingly increased. When the batch size is not large, the material performance requirements should be appropriately relaxed to reduce the cost.