Aihao Metal Products

Various inspection steps after stamping parts processing

       After stamping parts are processed, they undergo a series of inspections before leaving the factory, and only those passing the inspection will be delivered to the user. Now, let's hear from Suzhou Aihao Metal Products Factory about what aspects need to be inspected during the stamping parts processing inspection?

       1. Chemical analysis, metallographic examination

       Analyze the content of chemical elements in the material, determine the grain size level and uniformity of the material, assess the levels of free cementite, banded structure, and non-metallic inclusions in the material, and inspect defects such as shrinkage cavities and porosity in the material.

       2. Material inspection

       The materials for stamping parts processing are primarily hot-rolled or cold-rolled (mainly cold-rolled) metal strip materials. The raw materials for metal stamping parts should have quality certificates, which ensure that the materials meet the specified technical requirements. When there is no quality certificate or for other reasons, the metal stamping parts manufacturer can select the raw materials for re-inspection as needed.

       3. Formability test

       Conduct bending tests and cupping tests on the materials to measure their work hardening index (n-value) and plastic strain ratio (r-value). Additionally, the test method for steel plate forming performance can be conducted in accordance with the provisions for thin steel plate forming performance and test methods.

       4. Hardness testing

       The hardness testing of metal stamping parts is conducted using a Rockwell hardness tester. For small stamping parts with complex shapes, the testing surface is too small to be tested on a standard bench Rockwell hardness tester.

       5. Measurement of other performance requirements

       Suzhou Aihao Metal Products Factory is a professional manufacturer specializing in the production of sheet metal parts, stamping parts, machining parts, drawing parts, welding parts, and hardware processing parts. Our main business includes Suzhou sheet metal parts, Suzhou stamping parts, sheet metal processing, stamping parts processing, and Suzhou machining parts. We have passed the IATF16949 quality system and welcome inquiries for cooperation.