After the stamping parts are processed, the stamping processing plant needs to inspect the formed parts to ensure that the goods delivered to the customer meet their requirements. Therefore, inspection is also very important in the whole process. So what aspects of the stamping parts need to be inspected by the stamping processing plant? Here is a brief introduction for you:

1. Chemical analysis and metallographic inspection

Analyze the content of chemical elements in the material, determine the grain size grade and uniformity of the material, evaluate the grade of free cementite, strip arrangement and non-metallic inclusions in the material, and check the material shrinkage, porosity and other defects.

2. Material inspection

The materials for stamping parts processing are mainly hot-rolled or cold-rolled (mainly cold-rolled) metal sheet and strip materials. The raw materials of Metal Stamping parts should have a quality certificate, which ensures that the materials meet the specified technical requirements. When there is no quality certificate or for other reasons, the stamping processing plant can select raw materials for re-inspection.

3. Forming function experiment

The bending test and cupping test of the material are carried out to determine the work hardening index n value and plastic strain ratio r value of the material. In addition, the experimental method for the forming function of the steel plate can be carried out according to the provisions of the forming function and experimental method of the thin steel plate.

4. Hardness testing

Hardware stamping parts hardness testing using Rockwell hardness tester. Small, complex shape stamping parts, can be used to test the plane is very small, can not be tested on the general desktop Rockwell hardness tester.

5. Determination of other functional requirements

In addition, the stamping plant needs to be inspected according to certain specific requirements of the customer to see if it meets the requirements.

This article is from EMAR Mold Co., Ltd. For more EMAR related information, please click: www.sjt-ic.com!