Annealing in forging heat treatment is to heat the forging to an appropriate temperature, use different holding times according to the material and size of the forging, and then slowly cool it.

The purpose of forging annealing is to make the internal structure of the metal reach or approach a state of equilibrium, obtain good process performance and performance, or prepare the structure for further quenching.

The role of forging annealing:

1. Improve or eliminate various structural defects and residual stresses caused by steel during casting, forging, rolling and welding, and prevent deformation and cracking of forgings.

2. Soften forgings for cutting.

3. Refine the grains and improve the structure to improve the mechanical properties of forgings.

4. Prepare for the final heat treatment (quenching, tempering) of forgings.