Reasons for high temperature treatment
In industrial production, steel pipes often need to be treated at high temperatures. There are several main reasons for high temperature treatment:
1. Change the organizational structure of the steel pipe to improve its performance;
2. Reduce the hardness and brittleness of the steel pipe to improve its machinability and toughness;
3. Eliminate the internal stress of the steel pipe;
4. Change the surface properties of the steel pipe to adapt to different use environments.
The impact of high temperature on the rigidity of steel pipes
Steel pipes will undergo a series of material changes at high temperatures, such as loose structure, grain growth, chemical composition separation, etc. These changes will cause changes in the performance of steel pipes, and rigidity is no exception.
1. The strength and hardness of steel will decrease, and the ability to bend and twist will increase;
2. The plasticity and toughness of steel will increase;
3. The wear resistance of steel will decrease;
4. The chemical composition of steel may also change.
Therefore, the performance of steel pipes after high temperature treatment will indeed change compared to untreated steel pipes, and this change may also affect their safety during use.
DIN 17175 high temperature structural pipe
