A forging process carried out at a metal recrystallization temperature.

Hot rolling is carried out at a temperature higher than the recrystallization temperature.

Cold rolling plastic deformation temperature is lower than the recovery temperature of the rolling process.

A metal heat treatment process in which the metal is slowly heated to a certain temperature, maintained for a sufficient time, and then cooled at a suitable rate (usually slow cooling, sometimes controlled to cool).

Pickling: The part is immersed in an aqueous solution of sulfuric acid or the like to remove a thin film such as an oxide on the metal surface. Is electroplating, enamel, rolling and other pre-treatment or intermediate processing