Heat treatment is a very important link in the material processing process. It changes the internal structure of the material by controlling the heating, insulation and cooling processes, thereby improving its performance.

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The heat treatment process plays a vital role in metal processing and materials science. Its main role is to improve the properties of materials, optimize the structure of materials, and meet the needs of specific applications. The following are the main functions of the four heat treatment processes annealing, normalizing, quenching, and tempering:

The four major processes of heat treatment are annealing, normalizing, quenching, and tempering. Each of them has different characteristics and functions. The following is a detailed explanation of these four processes。