Stamping is a kind of pressure processing method that uses stamping die to apply pressure to material on a press at room temperature to make it produce plastic deformation or separation so as to obtain parts of desired shape and size. This process is often called cold stamping.
Stamping die is a kind of process equipment which processes materials into workpiece or semi-finished products in stamping process. It is the main process equipment of industrial production. The parts produced by the stamping die can be made of rolled steel plate or steel strip produced in a large number of metallurgical plants as blank, and it does not need heating in the production, and has the advantages of high production efficiency, good quality, light weight and low cost. Cold stamping products can be found in airplanes, automobiles, tractors, motors, electrical appliances, instruments, meters and daily necessities. Such as: stainless steel lunch box, dinner plate, cans, car covering parts, bullet casings, aircraft skin, etc. According to incomplete statistics, stamping parts in the automobile, tractor industry accounts for about 60%, in the electronics industry accounts for about 85%, and in daily hardware products account for about 90%.
A press is a machine used to pressure process materials placed in a die. The commonly used presses for stamping processing are mechanical presses and hydraulic presses.
A stamping part often needs to go through multiple stamping processes to complete. Due to the different shape, dimensional accuracy, production batch and raw materials of stamping parts, the stamping process is also diverse, but it can be roughly divided into two categories: separation process and forming process.
(1) The separation process makes the stamping parts and sheet material along a certain contour separation process. For example: cutting, punching, blanking, notching, cutting edge, etc.
(2) Forming process materials under the condition of not breaking plastic deformation, so as to obtain a certain shape, size and precision requirements of the parts of the process. For example: bending, deep drawing, flanging, bulging, shaping, etc.
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