Stamping is a kind of forming processing method which uses press and die to exert external force on sheet, strip, pipe and profile to produce plastic deformation or separation, so as to obtain the required shape and size of the workpiece (stamping part). Stamping and forging belong to plastic processing (or pressure processing), collectively known as forging. The stamping blank is mainly hot-rolled and cold-rolled steel plate and strip. 60-70% of the world’s steel is plate, and most of them are made into finished products by stamping. The automobile body, chassis, oil tank, radiator, boiler drum, container shell, motor, electrical appliance iron core, silicon steel sheet are all processed by stamping. There are also a large number of stamping parts in instruments, household appliances, bicycles, office machinery, living utensils and other products.
Stamping processing is a kind of production technology which can make the sheet metal directly subject to the deformation force and deform in the die with the help of the power of conventional or special stamping equipment, so as to obtain the product parts with certain shape, size and performance. Sheet metal, die and equipment are the three elements of stamping. According to the stamping processing temperature, it is divided into hot stamping and cold stamping. The former is suitable for sheet metal processing with high deformation resistance and poor plasticity, while the latter is carried out at room temperature, which is a common stamping method for sheet metal. It is one of the main methods of metal plastic processing (or pressure processing), and also belongs to the material forming engineering technology.
The die used in stamping is called stamping die, referred to as stamping die. Stamping die is a special tool for batch processing materials (metal or nonmetal) into required stamping parts. The stamping die is very important in stamping. If there is no die that meets the requirements, it is difficult to carry out the batch stamping production; without the advanced die, the advanced stamping process can not be realized. Stamping process and die, stamping equipment and stamping materials constitute the three elements of stamping process, only when they are combined can stamping parts be obtained.