Vol.25, No.1, 2025, pp. 3–6
https://doi.org/10.69644/ivk-2025-01-0003  

This study offers a method for using flame straightening in civil engineering with limitations that are far higher than suggested by the steel manufacturer. In the process of flame straightening, when working with steel structures, a small portion of an element or structure is heated to the straightening temperature to cause geometrical changes. Many factories manufacturing steel structures employ flame straightening procedures. In numerous instances, the economic feasibility of repairing steel structures without flame straightening is not achievable. The purpose of the study is to demonstrate how flame hardening affects the material microstructure. The basic idea that metals shrink when cooled and expand when heated is the basis of flame straightening.

Keywords: • flame straightening • large beam deformations • steel structures • welding quality