Steel uses high-frequency induction heating equipment for induction heat treatment, which can effectively reduce internal stress and improve the uniformity of its distribution.

Many people say that using high-frequency induction heating equipment to heat treat steel can effectively improve the special properties of steel, reduce the internal stress of steel and improve the uniformity of its distribution. But what are the facts?

The following table shows the distribution of tangential and axial stress inside the 35 steel pipe after tempering by different heating methods. From the stress data analyzed in the table, it can be seen that the stress value after induction heating tempering is lower than that after electric furnace tempering and is evenly distributed. The author obtained similar results when analyzing the stress of induction heating quenching and tempering treatment and cold drawn bearing steel.

Internal stress distribution of 35 steel pipes tempered by different heating methods

The steel is heated and cooled evenly during the rapid heat treatment of induction heating using high-frequency induction equipment. After heat treatment, the internal stress of steel will be significantly reduced and evenly distributed. For this reason, the deformation of the steel after heat treatment is small, which reduces the straightening workload.

To sum up, the use of high-frequency induction heating equipment for heat treatment of steel can effectively reduce the internal stress of the steel and improve the uniformity of its distribution. If you want to understand the specific change process of steel properties during induction heat treatment, you can observe more about the induction heat treatment process of steel.