Brief introduction of annealing process

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Brief introduction of annealing process

Сообщение wyb2020 10 мар 2021, 17:16

Brief introduction of annealing process:

Annealing is a kind of metal heat treatment process, which means that the metal is slowly heated to a certain temperature, maintained for enough time, and then cooled at an appropriate rate, sometimes natural cooling, sometimes controlled cooling.

The purpose of annealing:

1. Reduce hardness, soften workpiece and improve machinability.

2. Improve or eliminate all kinds of structural defects and residual stress caused by iron and steel in the process of casting, forging, rolling and welding, and reduce the deformation, cracking or crack tendency of the workpiece.

3. Refine the grain and improve the structure to improve the mechanical properties of the workpiece and eliminate the structural defects.

4. Unifying the structure and composition of the material, improving the properties of the material or preparing the structure for subsequent heat treatment, such as annealing and tempering.

In the actual production, annealing process is widely used. According to the different annealing purposes of the workpiece, there are many kinds of annealing heat treatment processes, such as complete annealing, spheroidizing annealing, stress relief annealing and so on.

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