Let metal can be forged is good to produce a plastic flow of parts made of. When the metal blank encountered external forces and thus to produce the corresponding plastic flow, due to its change in volume will not develop, but the metal blank is carried out toward a portion of least resistance to flow. So in the process of manufacturing operations, often on the basis of these laws to control the appearance of the shape of parts, in order to achieve; metal parts to pull long, reaming, bending and deep drawing and other metal deformation. For forged out of the parts, the exact size of the product is very high, and therefore are more conducive to mass production operations. By forging, extrusion products, stamping mold and other appropriate form more accurate in terms of dimensional accuracy, stability, so you can use some of the more efficient forging forging machinery and automatic production line, or a large number of specialized high-volume manufacturing . Process manufacturing operations generally include at forging metal blank before forming material products, forging billet heating and pretreatment; there is molded parts after heat treatment, sorting, calibration and related inspection work, so the production process The need to focus on all aspects of both.