|Straightening - Course: Technique of working sheet metals, pipes and sections. Trainees' handbook of lessons (Institut für Berufliche Entwicklung, 16 p.)|
Metal sheets, pipes or sections, which had been twisted, bent or deformed during transport or working may be given back their original form by means of various techniques.
Figure 1 Straightening of metal sheets
The mainly used techniques are hammering and bending for deformation work and local heating up for eliminating tension in materials.