There are many ways to improve the service life of the […]
There are many ways to improve the service life of the mold.If you want to increase the service life of the mold and save costs, you can use the method of heat treatment to refine the grain. Using grain refinement to improve the mechanical properties of the material can simultaneously increase the strength at room temperature and also increase the fatigue limit. Moreover, the obtaining of fine crystal grains is relatively simple, and can be obtained by proper heat treatment. Cyclic ultrafine heat treatment is a common method of heat treatment to refine grains. It only performs two processes of heating and cooling in cyclic heat treatment, which is a relatively simple and easy method of grain refinement.
Processing inspection showed that after the cyclic ultrafine heat treatment of the workpiece, carbides and retained austenite were evenly distributed as spherical particles, and the martensite was relatively fine. The four-cycle heat treatment of the steel motor rotor core punching convex and concave molds can increase its life by more than 30%, and has a very obvious effect on reducing the occurrence of cracks.
The method of cyclic ultrafine heat treatment can obtain a uniform and fine structure. The principle is that the role of rapid heating and cyclic treatment is fully utilized, and rapid heating generates a large number of austenite crystal nuclei, which appear and get small Grain; the faster the process, the greater the temperature difference, the better the refinement effect. Cyclic ultra-fine heat treatment is one of the effective methods to improve the fine blanking die. Although the process is relatively complicated, the effect is obvious for the result.