Process for straightening section steel while minimizing residual stresses

摘要

In order to create a method for straightening rolled section steel which, without the equipment required for known straightening devices, provides a high-quality, low-stress section steel, according to the invention it is proposed that at least one section steel, its maximum local cross-sectional temperature below A¶r1¶ and its minimum local cross-sectional temperature is above a lower limit temperature theta¶u¶, in particular clamped at its ends and then cooled, the lower limit temperature theta¶u¶ already causing, due to the clamping, a thermal expansion in all the fibers of the section steel which is greater than the expansion which it would be necessary to plasticize the fibers, which would experience the greatest internal compressive stresses if the profile steel were to be air-cooled without tension.