How To Ensure The Quality Of Stamping Parts

Posted: 12th Oktober 2019 by xinghui in Allgemein
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In daily life, parts and products are everywhere. How to improve customer productivity and quality assurance is the core direction of NINGBO STARLITE MACHINERY TECHNOLOGY CO.,LTD. To help customers improve their competitiveness, equipment and technology are indispensable. The following aspects of Stamping Parts are indispensable.

  1. Chemical analysis and metallographic examination

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

2, material inspection

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

3, forming performance test

The material is subjected to a bending test and a cupping test, and the work hardening index n value and the plastic strain ratio r value of the material are measured, and the test method for the forming property of the steel sheet can be carried out according to the forming properties of the steel sheet and the test method.

4, hardness testing

The hardness of the stamped parts was measured using a Rockwell hardness tester. Small, complex-shaped stamped parts can be used to test small planes and cannot be tested on ordinary benchtop Rockwell hardness testers.

5, other performance requirements determination

Determination of the electromagnetic properties of the material and the adhesion to the coating, the coating, and the like.