The rolled finished steel, especially the section steel, is often not straight enough and its cross-sectional metal u shaped bracket is not correct enough.
Steel materials may also bend or end torsion due to collision with baffles or other obstacles during transportation.
When cooling on the bench, the steel will bend or buckle due to uneven cooling.
Steel that is bent or warped beyond the technical standards must be straightened.
The purpose of steel straightening is to make the steel straight in the length direction, to shape the cross section of the steel, and to loosen the oxide scale on the surface of the tool steel.
Therefore, the straightening process of steel is generally carried out before pickling.
The straightening of steel can be divided into pressure straightening, tension straightening and roller straightening according to different methods.
Link to this article：Straightening of steel
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