Comprehensive and systematic understanding of annealing furnace

Time：2022-05-24

I Introduction to annealing process:
Annealing is a kind of metal heat treatment process, which refers to the heat treatment method of slowly heating the metal to the temperature, holding it for enough time, and then cooling it at an appropriate speed, sometimes natural cooling, and sometimes controlled cooling.

II Purpose of annealing:
1. Reduce hardness, soften workpiece and improve machinability.
2. Improve or eliminate various 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 workpiece.
3. Refine the grain and improve the structure to improve the mechanical properties of the workpiece and eliminate the structural defects.
4. Uniform the material structure and composition, improve the material properties or prepare the structure for future heat treatment, such as annealing and tempering.
In actual production, annealing process is widely used. According to the different purposes of workpiece annealing, there are many kinds of annealing heat treatment processes, such as annealing, spheroidizing annealing, stress relief annealing and so on.

III Purpose of annealing furnace:
Annealing furnace series industrial furnaces are widely used in various industries such as casting, metallurgy, automobile, aerospace, military industry, shipbuilding, light industry and electric power. They can be used for different annealing heat treatment processes for various metal workpieces such as high chromium and high manganese steel castings, gray iron castings, rolls, bearings, steel balls and wear-resistant liners.

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