Formatio Methodo:

① aperta clangentes (liberum clangoris)

Inter tres genera: infectum harenae fingunt, arida harenae fingunt et chemica obduravit harenae fingunt;

② clausa modus clangoris

Special mittentes usura naturalis mineralibus harenae et glaream sicut pelagus coronam materiam (ut obsidionem casting, lutum mittentes, mittens officina Crusta mittentem, negative casting, solidum casting, tellus, etc.);

③ Alii Fugientes Classification modi

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).