Stampings and castings, forgings, compared with the thin, uniform, light, strong features. Stamping produces workpieces with stiffeners, ribs, undulations or flanging that are otherwise difficult to manufacture to increase their rigidity. As a result of precision molds, the workpiece accuracy of up to microns, and repeat the high precision, the same specifications, you can stamping holes, bosses and so on. Cold stamping parts are generally no longer by cutting, or only a small amount of cutting. Hot stamping precision and surface conditions lower than the cold stamping parts, but still better than castings, forgings, cutting less.
Stamping is an efficient production method, the use of composite molds, especially the multi-position progressive die, in a press (single or multi-station) to complete multi-punching process to achieve by the strip unwinding, straightening Flat, blanking to forming, finishing the automatic production. High production efficiency, good working conditions, low production costs, generally can produce hundreds of pieces per minute. Compared with other methods of machining and plastic processing, stamping has many unique advantages, both technically and economically. The main performance is as follows.
　　(1) Stamping production of high efficiency, and easy to operate, easy to mechanize and automation. This is because the stamping is to rely on the die and stamping equipment to complete the processing, the ordinary press the number of trips up to tens of times per minute, high-speed pressure to be hundreds or even thousands of times per minute or more, and each stamping stroke May get a punch.
　　(2) stamping die stamping due to ensure the size and shape accuracy, and generally does not damage the surface quality of stamping parts, and die life is generally longer, so stamping the quality of stability, good interchangeability, with "exactly the same" Characteristics.
　　(3) stamping Machinable size range, the more complex shape of the parts, such as the small watches to the stopwatch, large car beams, covers, etc., coupled with cold stamping material when the cold deformation hardening effect, the intensity of stamping and Stiffness is higher.
　　(4) The stamping is generally no chip scrap generation, less material consumption, and does not require other heating equipment, which is a material saving, energy-saving processing methods, the lower the cost of stamping parts.
　　Due to the superiority of stamping, stamping has a wide range of applications in all fields of the national economy. For example, in aerospace, aviation, military, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transport, chemicals, medical appliances, household appliances and light industry and other departments have stamping process. Not only is it used throughout the industry, but everyone is in direct contact with the stamping product. Like the plane, train, car, tractor there are many large, medium and small stampings. Car body, frame and rims and other parts are punched out. According to the survey statistics, bicycles, sewing machines, watches, 80% of the stamping parts; TV, tape recorders, camcorders 90% of the stamping parts; there are food metal shell, steel boilers, enamel bowls and stainless steel tableware, All are the use of die stamping products; even the lack of computer hardware can not stamping parts.