Metal stamping parts are everywhere in our daily life. In order to improve the production efficiency and quality of customers, we continue to introduce advanced technology products.
1. Chemical analysis and metallographic examination
Analyze the content of chemical elements in the material, determine the grain size and uniformity of the metal stamping material, evaluate the level of free cementite, banded structure and non-metallic inclusions in the material, and check the material shrinkage, porosity and other defects.
2. Material inspection
The materials for stamping parts 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 to 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 raw materials for re-inspection as needed.
3. Formability test
The formability test is to perform a bending test and a cupping test on the material to determine the work hardening index value and plastic strain ratio of the material. In addition, the test method for the formability of steel sheets can be carried out according to the provisions of the formability and test methods of thin steel sheets.
4. Hardness testing
The hardness test of metal stamping parts adopts Rockwell hardness tester. Small, complex-shaped stampings can be used to test small planes that cannot be tested on ordinary benchtop Rockwell hardness testers.
5. Determination of other performance requirements
Determination of the electromagnetic properties of materials and the adhesion of claddings and coatings.
The technical requirements for processing metal stamping parts are shared with you here. In addition, it should be noted that the accuracy and surface state of hot metal stampings are lower than those of cold metal stampings, but they are still better than castings and forgings, with less machining.
After the metal stamping parts are installed, pay attention to maintenance to prevent rust and corrosion. In daily use, it should be lightly closed and lightly opened to prevent hard closing and hard opening, which may cause damage.
Metal spring pieces belong to stamping parts, in the category of electronic metal materials. Made of stainless steel or manganese after heat treatment, it is an important part of the switch.
In the production of metal stamping parts, in order to meet the needs of different stamping work, various types of presses are used. There are many types of presses. According to the different transmission methods, they can be mainly divided into two categories: mechanical presses and hydraulic presses.
Among them, mechanical presses are the most widely used in stamping production. With the development of modern stamping technology, high-speed presses, CNC rotary head presses, etc. are also increasingly widely used.