Understanding drawn metal stampings
Stamping is mainly a metal or non-metallic sheet, with the pressure of the press, by stamping die stamping molding, it has the following characteristics:
1. stampings in material consumption is not the premise by stamping manufactured, its light weight parts, stiffness, and after plastic deformation of sheet metal, metal internal organizational structure has been improved to make stampings intensity has improve.
2. stamping parts stamping process, because the surface of the material is not damaged, and therefore, better surface quality, smooth and beautiful appearance, which provides a convenient conditions for surface paint, plating, phosphate and other surface treatments.
Stretching stampings compared with castings, forgings, with a thin, uniform, light, strong features. Stamping workpiece can be produced with ribs, ribs, undulating or flanging otherwise difficult to manufacture, to increase its rigidity. As a result of precision molds, precision parts up to micron level, and high repeatability and consistent specifications may be stamped out of the nest holes, bosses and so on.
Stretching stamping life, in addition to depending on the mold reasonable structure, high manufacturing precision, good effect of heat treatment and the correct choice of punch, stretching stamping mounting accuracy and other factors, the proper use of molds, maintenance and repair are also the link can not be ignored, which should note the following:
1. drawn stampings install strict inspection before use, remove dirt, mold and guide sleeve stretch check whether oiled stamping.
2. Tensile stamping punch and die edge wear should stop using, and timely sharpening, otherwise it will wear rapidly expanding edge of the mold, mold accelerate wear and reduce the quality of stamping and die life.
3. To ensure the life of stretching stamping, die springs should periodically be replaced to prevent damage to the influence of the spring fatigue tensile stamping use.
By stretching stamping presses and is applied to the mold plates, strips, tubes and profiles, and other external forces, thus producing plastic deformation or separation, thereby obtaining a desired shape and size of the workpiece (stamping) of forming methods. Stamping and forging belong to plastic processing (or pressure processing), collectively known as forging. Stamping billet mainly hot and cold rolled steel sheet and strip.
