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| | technical requirements of metal stamping parts (23rd Jun 21 at 2:52am UTC) | | technical requirements of metal stamping parts
With the improvement of the quality of life, metal stamping parts have penetrated into various fields, whether it is industrial production or daily life, various metal stamping parts will be used in many places, which are closely related to our lives and cannot be separated. What process and technical requirements does a hardware processing factory need to produce hardware stamping parts to produce hardware products that can meet the production and life of consumers?To get more news about Stamping parts, you can visit tenral.com official website.
Process requirements for metal stamping parts：
1. The materials used for metal stamping parts must not only meet the technical requirements of product design, but also meet the requirements of the stamping process and the processing requirements after stamping (such as cutting, electroplating, welding, etc.).
2. When designing the structural shape of hardware stamping parts, it is best to use simple and reasonable surfaces (such as flat surfaces, cylindrical surfaces, spiral surfaces) and their combinations, and at the same time, try to minimize the number of processed surfaces and the smallest processing area.
3. Choose a reasonable method of blank preparation in mechanical manufacturing, which can directly use profile, casting, forging, stamping and welding. The selection of the blank is related to the specific production technical conditions, and generally depends on the production batch, material properties and processing possibilities.
4. Metal stamping performance requirements. For the forming process, in order to facilitate the stamping deformation and the improvement of the quality of the parts, the material should have good plasticity, small yield ratio, large plate thickness directivity coefficient, and small plate plane directivity coefficient , The ratio of the yield strength of the material to the elastic modulus is small. For the separation process, the material does not need to have good plasticity, but it should have a certain degree of plasticity. The better the plasticity, the more difficult it is to separate.
Specify the processing cost of parts with appropriate manufacturing accuracy and surface roughness. The processing cost of metal stamping parts will increase with the improvement of precision, especially in the case of high precision, this increase is extremely significant. Therefore, when there is no sufficient basis, high precision should not be pursued. In the same way, the surface roughness of metal stamping parts should also be appropriately specified according to the actual needs of the mating surface. The processing technology of metal stamping parts is relatively complicated. In order to ensure that the performance of metal stamping parts can meet the requirements of use, it is necessary to follow the corresponding process requirements to ensure the feasibility of production.
1. Chemical analysis and metallographic inspection
Analyze the content of chemical elements in the material, determine the grain size level and uniformity of the material, evaluate the level of free cementite, band structure and non-metallic inclusions in the material, and check the material's shrinkage, porosity and other defects.
2. Material inspection
The materials processed by stamping parts are mainly hot-rolled or cold-rolled (mainly cold-rolled) sheet metal 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 metal stamping parts manufacturer can select raw materials for re-inspection as needed.
3. Formability test
Perform bending test and cupping test on the material, determine the work hardening index n value and the plastic strain ratio r value of the material. In addition, the steel sheet forming performance test method can be carried out according to the thin steel sheet forming performance and test method.
4.Hardness testing
The hardness test of metal stamping parts adopts Rockwell hardness tester. Small stamping parts with complex shapes can be used to test the plane is very small, can not be tested on the ordinary desktop Rockwell hardness tester. | |
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