Process classification of cold stamping parts

Metal stamping parts rely on presses and dies to apply external force to plates, strips, pipes and profiles to cause plastic deformation or break up, so as to obtain the required shape and size of the workpiece (stamping) forming method. Cold stamping parts are generally no longer processed by cutting, or only a small amount of cutting processing is required. The accuracy and surface condition of hot stamping parts are lower than cold stamping parts, but still better than castings and forgings, and the cutting amount is less. Stamping is mainly classified by process, which can be divided into two categories: separation process and forming process. The separation process is also called punching, and its purpose is to separate the stamping parts from the sheet along a certain contour line while ensuring the quality requirements of the separated section. The purpose of the forming process is to make the sheet metal plastically deform without breaking the billet to make a workpiece of the required shape and size. In actual production, multiple processes are often applied to one workpiece. Blanking, bending, shearing, deep drawing, bulging, spinning, and correction are the main stamping processes. The stamping parts market in my country has the following problems: (a) Some production capacity is oversupply, and some stamping plants in OEMs can’t put it away or hold it. In most of the year, there are insufficient production tasks and no market behavior. (b) The market competition in the home appliance and electrical appliance stamping parts industry is fierce. However, there are not many internationally competitive companies that have become a climate. (c) No one has conducted serious research on the stamping parts market. The stamping parts market is messy. In the above-mentioned market conditions, technological development is restricted, and the entire industry is also lagging behind, which is reflected in: (d) The overall level is low, and many industries have excess production capacity and lack high-end technology. Technological progress is slow. (e) Material technology, mold technology, lubrication technology and equipment are all at a relatively low level, far from being able to meet the needs of domestic production development. Previous post: Forming accuracy of metal stamping parts