Introduction to the process requirements and technical requirements of precision stamping parts [Hardware]

With the improvement of the quality of life, precision stamping parts have penetrated into various fields, whether it is industrial production or daily life, a variety of metal stamping parts are used in many places, which are closely related to our lives and are inseparable. What process requirements and technical requirements do hardware processing plants need to produce precision stamping parts to produce hardware products that can meet consumers' production and life? Process requirements for precision 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 planes, 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 modulus of elasticity 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. 5. 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 accuracy 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. Technical requirements for precision stamping parts 1. Chemical analysis and metallographic inspection Analyze the content of chemical elements in the material, determine the level and uniformity of the material's grain size, and evaluate the level of free cementite, band structure and non-metallic inclusions in the material , Check material 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 quality certificates, which ensure that the materials meet the specified technical requirements. When there is no quality certificate or due to 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 to determine the work hardening index n value and plastic strain ratio r value of the material. In addition, the steel plate forming performance test method can be in accordance with the thin steel plate forming performance and test method. get on. 4. Hardness testing The hardness testing 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. Metal stamping parts have the characteristics of thinness, uniformity, lightness and strength. Dongguan Hardware Co., Ltd. specializes in the production of various metal stamping parts, focusing on the research and development and manufacturing of metal stamping parts, using precision mold processing, so that the precision of precision stamping parts can reach 0.01mm.