The characteristics of steel forgings compared with castings

Compared with castings, metal can improve its structure and mechanical properties after forging. After the casting structure is deformed by the forging method due to the deformation and recrystallization of the metal, the original coarse grains and columnar grains become the equiaxed recrystallized structure with finer grains and uniform size, which makes the original segregation in the steel ingot, the compaction and welding of looseness, pores, slag inclusions, etc., make the structure more compact and improve the plasticity and mechanical properties of the metal.

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