The main reasons for tempering steel pipes after quenching are as follows:
1. Obtain the required mechanical properties: the strength and hardness of the steel pipe after quenching is greatly improved, but the plasticity and toughness are significantly reduced. Tempering treatment can improve the plasticity and toughness of the steel pipe while maintaining a certain hardness and strength, and obtain good comprehensive mechanical properties.
2. Eliminate internal stress: During the quenching process of the steel pipe, large internal stress will be generated inside the steel pipe. If not dealt with in time, these internal stresses will cause the steel pipe to deform or even crack. Tempering treatment can effectively eliminate these internal stresses and improve the service life and stability of steel pipes.
3. Stable organizational structure: The martensite structure obtained from the quenched steel pipe is unstable. Tempering treatment can transform martensite into a stable structure, ensuring that the shape and size of the steel pipe will not change during use.
4. Adjust performance: By controlling the tempering temperature and time, the mechanical properties of the steel pipe can be adjusted to meet the requirements of different use environments.
To sum up, the purpose of tempering steel pipes after quenching is to obtain the required mechanical properties, eliminate internal stress, stabilize the organizational structure, and adjust performance.
Post time: Apr-29-2024