How to detect whether the stamping material meets the technical requirements

With the development of society and technology, the market has higher and higher requirements for the quality of stamping parts. When our stamping parts manufacturers produce stamping parts, they also have certain technical requirements for raw materials. So how to check whether the materials of stamping parts meet the technical requirements? The precision author will take you to find out. 1. Chemical analysis and metallographic inspection analyze the content of chemical elements in the stamping material, determine the uniformity of the material grain size, evaluate the level of free cementite, band structure and non-metallic inclusions in the material, and check the stamping parts Material shrinkage, porosity and other defects; 2. Formability test Conduct bending test and cupping test on the material to determine the work hardening index n value and plastic strain ratio r value of the material. In addition, regarding the steel plate forming performance test method, it can be thinned. The forming performance and test method of the steel plate shall be stipulated; 3. The materials for processing the stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal plate and strip materials. The raw materials of the stamping parts should have a quality certificate, which guarantees the stamping The material of the parts meets the specified technical requirements. When there is no quality certificate or due to other reasons, the stamping parts manufacturer can return it or allow it to re-inspect the raw materials according to the regulations; 4. The hardness test of the stamping parts adopts Rockwell hardness tester. Small stamping parts with complex shapes can be used to test the flat surface is very small, can not be tested on the ordinary desktop Rockwell hardness tester; the above is how to detect whether the stamping material meets the technical requirements, I hope it will be helpful to you. Precision, dedicated to precision metal stamping and metal insert injection molding for more than ten years, with rich experience in stamping customization, welcome email consultation. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automotive stamping parts molds Learn more: Points to note in the design of continuous stamping dies