Compared with castings and forgings, stamping parts are thin, uniform, light and strong. Stamping can make the workpiece with rib, undulation or flanging which is difficult to be made by other methods, so as to improve its rigidity. Due to the use of precision die, the precision of workpiece can reach micron level, and the repetition precision is high, the specification is consistent, and the hole and socket, boss, etc. can be punched. Generally, cold stamping parts are no longer machined, or only need a small amount of machining. The accuracy and surface state of hot stamping parts are lower than that of cold stamping parts, but they are still better than castings and forgings, and the machining amount is less.
Due to the superiority of stamping, stamping processing is widely used in various fields of national economy. For example, there are stamping processes in aerospace, aviation, military industry, machinery, agricultural machinery, electronics, information, railway, post and telecommunications, transportation, chemical industry, medical equipment, daily electrical appliances and light industry. Not only the whole industry uses it, but also everyone directly contacts with stamping products. There are many large, medium and small stamping parts on airplanes, trains, automobiles and tractors. The car body, frame and rim are all stamped. According to the relevant survey and statistics, 80% of bicycles, sewing machines and watches are stamping parts; 90% of TV sets, tape recorders and cameras are stamping parts; there are also metal food cans, steel boilers, enamel bowls and stainless steel tableware, all of which are stamping products using dies; even the hardware of computers cannot lack stamping parts.
