Technical requirements of machining precision metal stamping parts

Metal stamping parts processing technical requirements: use of the raw materials of metal stamping parts processing, must be in accordance with GB 710-65 'quality carbon steel thin plate technology conditions', GB 2517-81 'general structure with strip steel plate and steel belt,' such as regulations on metal material standard, and accords with the material supply status, or other requirements. Metal stamping parts raw materials should have quality certificate, it guarantees material conform to the provisions of the technical requirements. When there is no certificate of quality or for other reasons, metal stamping parts manufacturer can choose materials according to the need for the reinspection. Chemical analysis, metallographic examination, content of chemical element in the analysis of materials; Determine level of material grain size and uniformity; Evaluation materials free cementite, banded structure and nonmetallic inclusions level; Check the material defects such as shrinkage cavity, porosity. Forming performance test, bending test, cupping test was carried out on the material, the determination of material strain hardening index n value and plastic strain ratio r value, etc. About steel sheet formability test method, according to the provisions of the sheet metal forming performance and test methods. Other performance measurement: the electromagnetic properties of the materials and the determination of coating, coating adhesion ability, etc. A: stainless steel development process