Metal stamping parts can be re-inspected by selecting raw materials as required. Chemical analysis and metallographic inspection: analyze the content of chemical elements in the material; determine the level of grain size and uniformity of the material; evaluate the free cementite, band structure and non- The level of metal inclusions; check material shrinkage, porosity and other defects. Non-standard stamping parts stamping can process parts with a large size range and more complex shapes, such as stopwatches as small as clocks and clocks, as large as automobile longitudinal beams, covering parts, etc., plus the cold deformation and hardening effect of the material during stamped aluminum parts, and the strength of the stamping And the stiffness is high.

Formability test: conduct bending test and cupping test on the material, determine the work hardening index n value and the plastic strain ratio r value of the material. Regarding the test method of steel sheet formability, it can be carried out in accordance with the provisions of sheet steel formability and test method. Determination of other performance requirements: the measurement of the electromagnetic properties of the material and the adhesion to the coating and coating.

1. Material selection

The material used in the processing of the stretch mold is wear-resistant, corrosion-resistant, and high-toughness, which can greatly enhance the service life of the mold.

2. Mold design

Good mold structure design is a prerequisite for the manufacture of a qualified drawing mold. Before designing, we need to analyze the mold structure and product structure in all aspects.

3. Use qualified equipment

Including CNC milling, EDM, precision carving, large drilling machines, wire cutting, surface grinders, milling machines, lathes, etc.