What factors affect the quality of metal stamping parts?

The stamping process can be roughly divided into two categories: separation process and forming process (bending, drawing, forming). The separation process is to separate the stamped parts and the blank along a certain contour, and the quality of the separated parts of the stamped parts should also meet certain requirements. The forming process is to make the stamping blank produce plastic deformation without damage, and transform it into the shape required by the finished product, and meet the requirements of dimensional tolerances. The following is a brief introduction of metal stamping parts by precision authors. 1. The impact of the stamping process on the quality of the workpiece. According to the stamping temperature, there are cold stamping and hot stamping methods, which depend on the strength, plasticity, thickness, degree of deformation and equipment capacity of the material. The original heat treatment state and use conditions of the material should be Considered. (1) Room temperature cold stamping metal processing is generally suitable for blanks with a thickness of less than 4mm. The advantages are no heating, no scaling, good surface quality, simple operation and low cost. The disadvantage is the phenomenon of work hardening, severe metal loss and further deformability. Cold stamping blank thickness uniformity and fluctuation range are small, the surface is smooth, no scratches, etc. (2) Hot stamping: The process of heating metal to a certain temperature range. Its advantages are to remove internal stress, avoid work hardening, increase material plasticity, reduce deformation resistance, and reduce equipment power consumption. 2. The impact of stamping materials on the quality of workpieces. There are three main processes of stamping: blanking, bending and stretching. Different processes have different requirements for printing plates. The choice of materials should also be considered according to the general shape and processing technology of the product. Select the printing plate. (1) The influence of hedging on cutting processing The sheet metal should have enough plasticity to avoid cracks during blanking. After punching soft materials, parts with smooth cross-section and small inclination can be obtained. After punching, the section irregularities of hard materials are relatively large, especially for thick plate materials. (2) The influence of materials on bending The metal plate that needs to be bent should have sufficient plasticity and a lower yield limit; a higher plastic plate is not easy to break when bent; a plate with a lower yield limit and a lower elastic modulus should be bent Less rebound afterwards. The material is brittle, and the bending needs to have a large relative bending radius, otherwise it is easy to crack during the bending process. (3) The influence of the material on the deep drawing process. The drawing process of the sheet material not only requires the drawing depth as small as possible, the shape is as simple as possible, and the transition is smooth, but also requires the material to have good plasticity, otherwise it will easily cause the overall part to deform, and the partial Wrinkles and even cracking of stretched parts. Guangdong Precision Co., Ltd. is committed to providing customers from all walks of life around the world with one-stop solutions for precision drawing, blanking and plastic parts. Implement 5S site management, TPM equipment management and pass IATF 16949 quality system certification. With Winlead's quality management system, it has won the trust of global customers and has become a strategic partner of Philips and Osram for more than 20 years. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automotive stamping parts molds Learn more: Points to note in the design of continuous stamping dies