1. Improve the design of stamping dies
Whether the stamping die design is reasonable is the basis for improving the durability of the stamping die. Therefore, in the design of the stamping die, effective measures should be taken to deal with the unfavorable conditions in the forming of the product to improve the durability of the stamping die. For example, the life of the design of the small hole punching die is often expressed on the punch of the punching hole. For this type of stamping die, the small punch should be shortened as much as possible to increase the strength. At the same time, the small punch should be strengthened by the guide sleeve.
In addition, in the design of the stamping die, the form of the formwork, the fixing method and the guiding form of the convex and concave die, the determination of the pressure center, and the rigidity of the upper and lower stencils should be fully considered. Especially for the punching die, the selection of the gap value has a great influence on the durability. In the design, the gap of the stamping die should be selected reasonably, and the gap value should not be too small, otherwise it will affect the service life and durability of the stamping die. Practice has proved that, without affecting the quality of the stampings, properly amplifying the gap can greatly improve the durability of the stamping die, sometimes even several times and several times.
2. Correct selection of stamping die materials
Different stamping die materials have different strength, toughness and wear resistance. Using advanced materials under certain conditions can increase durability several times. Therefore, in order to improve the durability of the stamping die, it is necessary to select a good material.
3. Reasonable forging and heat treatment of stamping die parts
While selecting high-quality stamping die materials, reasonable forging and heat treatment of materials of the same material and different properties are one of the main ways to improve the durability of stamping die. For example, when quenching, if the production is overheated during heating, not only the workpiece is too brittle, but also causes deformation and cracking during cooling, resulting in reduced durability. Therefore, in the manufacture of stamping dies, it is necessary to have a reasonable grasp of the heat treatment process.