Stamping technology requirements: stamping parts of the use of raw materials, precision stamping. The lighter wind cap must be according to GB 710-710 "high quality carbon steel thin plate technical conditions", GB 2517-81 general structure and steel strip, steel strip GB 2521-81 cold rolled electrical steel belt and other metal materials standard regulations, and comply with the material supply status, or other requirements.The stamping certificate shall be the quality of the raw material, which guarantees that the material meets the requirements of the technical requirements.When there is no quality certificate or other reasons for precision stamping parts, the stamping parts factory shall select the raw materials for reinspection according to the needs.

Appearance inspection: check the surface defects, smudges, dimensions, shape and thickness of the outer profile and surface roughness of the surface.Materials for chemical analysis, metallographic examination and content analysis of chemical elements;Determine the particle size and uniformity of materials, evaluate the level of free cementite, ribbon structure and non-metallic inclusions.For defects such as shrinkage cavity, check the porosity of the material.Tensile strength, yield strength, nisa, elongation delta, shrinkage b and HRB, bending test, testing material, strain hardening index n, plastic strain ratio r, etc.

Regarding the testing method of steel sheet forming property, according to the prescribed sheet metal forming property and testing method.Other performance measures for safety fixing piece: determination of material and coating for electromagnetic performance of ignition barrel factory, coating adhesion, etc.