The difference between forgings and stampings

The difference between castings and forgings 1. The characteristics of castings are that it is easy to obtain workpieces with complex shapes that are difficult to obtain by other methods; the cost of castings is low; precision castings can be obtained by special processes, and the surface of the castings has ideal finish without processing; castings The forming is simple and the price is cheaper than forging; however, defects and non-dense areas are prone to appear in the castings. Domestic technology generally cannot guarantee the quality of the castings in strong corrosion and high pressure situations. Forgings are formed by forging bars using forging equipment. It is impossible to forge more complex workpieces and requires a large amount of processing, but the forging structure is relatively dense and is not prone to internal defects, so it is widely used in the processing of demanding parts. 2. Although the casting technology has developed tremendously, and computer technology is used to assist in optimizing the structural design and the fluid geometric design of the casting process, it is still extremely difficult to achieve good quality requirements. During the casting process, the casting is poured into the mold cavity. The metal may shrink, separate or pores during solidification. These problems make 'casting' castings unacceptable in harsh environmental applications. Shrinkage occurs in two processes. Metals with a temperature higher than the melting point shrink when they are cooled, and then shrink further during the solidification process. Related news: The characteristics of the main materials of stamping parts, the handling of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections