Metal products industry in the development process also encountered many difficulties, such as technical single, low level of technology, lack of advanced equipment, personnel shortages, restricted the development of metal products industry

Metalworking divided into many different hand, let us look at a detailed analysis of the different types of machining processes as well as cost effectiveness and how they need casting casting part: refers to the metal is heated and melted, then pour into the model inside. Suitable for modeling complex parts machining

Stainless steel products in modern life more and more widely used, but also constitute a stainless steel heating time scale, although there is no oxidation of carbon steel forgings on thick-skinned, but with a strong adhesion to the base metal and very strong, making molds and cutting tools are fast wear.

Compared with castings, metal after forging to improve its organizational structure and mechanical properties. The method of forging the cast structure after hot working due to the deformation of the metal after deformation and recrystallization, so that the original coarse dendrite and columnar grains become finer grain