Stamping parts are formed by applying external force to plates, strips, pipes and profiles by presses and molds to cause plastic deformation or separation to obtain workpieces (stamping parts) of required shape and size. Stamping and forging belong to plastic processing (or pressure processing) and are collectively called forging. The blanks for stamping are mainly hot-rolled and cold-rolled steel sheets and strips.
Stamping is an efficient production method. Using composite dies, especially multi-station progressive dies, can complete multiple stamping processes on one press, realizing the full process from strip uncoiling, leveling, punching to forming and finishing. automatic production. The production efficiency is high, the working conditions are good, and the production cost is low. Generally, hundreds of pieces can be produced per minute.
Stamping is mainly classified according to the 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 material along a certain contour line, while ensuring the quality requirements of the separation section. The surface and internal properties of the stamping sheet have a great influence on the quality of the stamping product. It is required that the thickness of the stamping material be accurate and uniform; the surface is smooth, no spots, no scars, no scratches, no surface cracks, etc.; Directionality; high uniform elongation; low yield ratio; low work hardening.
Stamping parts are mainly formed by stamping metal or non-metal sheet materials through the stamping die with the help of the pressure of the press. It mainly has the following characteristics:
⑴ Stamping parts are produced by stamping under the premise of low material consumption. The parts are light in weight and good in rigidity. After the sheet metal is plastically deformed, the internal structure of the metal is improved, which improves the strength of the stamping parts. .
(2) Stamping parts have high dimensional accuracy, are uniform in size with the molded parts, and have good interchangeability. General assembly and use requirements can be met without further machining.
(3) During the stamping process, since the surface of the material is not damaged, the stamping parts have good surface quality and a smooth and beautiful appearance, which provides convenient conditions for surface painting, electroplating, phosphating and other surface treatments.
Post time: Dec-30-2022