Introduction to annealing process:
Annealing is a metal heat treatment process that refers to the slow heating of the metal to the appropriate temperature, maintaining sufficient time, and then cooling at a suitable rate, occasionally natural cooling, and occasionally a heat treatment that regulates the rate of cooling.
The goal of annealing:
1. Reduce hardness, soften the workpiece and improve machinability.
2. Improve or eliminate various structural defects and residual stresses formed by steel during forging, forging, rolling and welding, and reduce workpiece deformation, cracking or crack deflection.
3. Refine the grains, improve the structure to increase the mechanical function of the workpiece, and eliminate the shortcomings of the tissue.
4. Average raw material organization and composition, improve raw material function or organize for future heat treatment, such as annealing and tempering.
In the intrinsic production, the annealing process is very mundane. According to the target difference of the annealing requirements of the workpiece, there are various processes for the anti-heat treatment, such as annealing, spheroidizing annealing and stress relief annealing.
