Annealing

・A type of heat treatment used to relieve internal stresses in metal and improve workability and toughness.

・An important process primarily applied to machined metals or welded areas to adjust material properties.

・Generally performed through a process of heating, holding, and slow cooling.

Main Purposes of Annealing
１．Removal of work hardening
２．Relief of internal stresses
３．Homogenization and stabilization of the microstructure
４．Relief of stresses caused by cold working or welding