Forging forming method:

① Open forging (free forging)

Including three types: wet sand mold, dry sand mold, and chemically hardened sand mold;

② Closed mode forging

Special casting using natural mineral sand and gravel as the main molding material (such as investment casting, mud casting, casting workshop shell casting, negative pressure casting, solid casting, ceramic casting, etc.);

③ Other forging classification methods

According to the deformation temperature, forging can be divided into hot forging (processing temperature higher than the recrystallization temperature of the billet metal), warm forging (below the recrystallization temperature), and cold forging (at room temperature).