What are the characteristics of forgings compared with castings?

　　　The microstructure and mechanical properties of metal can be improved after forging. Because of the deformation and recrystallization of the metal, the original coarse dendrite and columnar grain become equiaxed recrystallization structure with fine grain and uniform size after the hot working deformation of the casting structure, which makes the original segregation, looseness, porosity, slag inclusion and other compaction and welding in the ingot, the structure becomes more compact, and improves the plasticity and mechanical properties of the metal.

　　The mechanical properties of castings are lower than those of forgings of the same material. In addition, forging process can ensure the continuity of metal fiber structure, keep the fiber structure of forging consistent with the shape of forging, complete metal flow line, ensure good mechanical properties of parts and long service life of forgings produced by precision die forging, cold extrusion, warm extrusion and other processes, which are incomparable to castings

　　F304 B16.5 Stainless Steel Forged Blind Pipe Flange is an object with metal applied with pressure to shape the required shape or appropriate compression force through plastic deformation. This force is typically achieved by using a hammer or pressure. In the casting process, the fine grain structure is constructed and the physical properties of the metal are improved. In the practical use of components, a correct design can make the particle flow in the direction of the main pressure. Casting is a kind of metal molded object obtained by various casting methods, that is, the molten metal is poured into the prepared mold by pouring, injection, suction or other casting methods, and then it is cooled, sand is dropped, cleaned and post-treatment, etc., and the object with certain shape, size and performance is obtained.