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What are the types of heat treatments for steel?


Release time:

2024-04-30

Quenching + high-temperature tempering (also called quenching and tempering treatment) heats the steel pipe to the quenching temperature to transform the internal structure of the steel pipe into austenite, and then rapidly cools it at a speed greater than the critical quenching speed to transform the internal structure of the steel pipe into martensite. Coupled with high-temperature tempering, the steel pipe structure is finally transformed into a uniform tempered troostite structure.

1. Quenching + high-temperature tempering (also called quenching and tempering treatment) heats the steel pipe to the quenching temperature to transform the internal structure of the steel pipe into austenite, and then rapidly cools it at a speed greater than the critical quenching speed to transform the internal structure of the steel pipe into martensite. Coupled with high-temperature tempering, the steel pipe structure is finally transformed into a uniform tempered troostite structure.

2. The overall heat treatment of steel generally includes four basic processes: annealing, normalizing, quenching and tempering. Annealing: The process of heating the workpiece to a temperature below or above Ac1, keeping it warm for a certain period of time and then cooling it in the furnace to obtain a balanced structure. Classification: complete annealing, incomplete annealing, spheroidization annealing, diffusion annealing, recrystallization annealing and stress relief annealing.

3. Heat treatment is an important treatment process in the machinery manufacturing process. The basic heat treatment processes of steel include: normalizing, annealing, quenching, and tempering. This experience will be explained in detail.


4. Metal heat treatment processes can be roughly divided into three categories: overall heat treatment, surface heat treatment and chemical heat treatment. Depending on the heating medium, heating temperature and cooling method, each category can be divided into several different heat treatment processes. Using different heat treatment processes, the same metal can obtain different structures and thus have different properties.

5. What are the types of integral heat treatment that heat treatment processes are divided into? Integral heat treatment, as the name suggests, is to heat the entire workpiece. After the heating is completed, it is cooled at an appropriate speed to obtain the desired metallographic structure and change its overall mechanical properties. Metal heat treatment process.

6. Now, we will introduce four methods of heat treating steel. Flame quenching Flame quenching is a common method of heat treatment of steel. It uses water, oil or air to rapidly cool the steel while heating the surface of the steel. This method improves the hardness and toughness of the steel and is suitable for producing high-strength, high-toughness components.

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