Heat Treatment Distortion
Heat treatment distortion is a change in shape and dimensions of components due to thermal stresses during heating or rapid quenching.
Physical-chemical mechanism of action
Heat treatment distortion occurs when components are cooled too quickly during manufacturing or repair. This leads to uneven heating rates in different areas of the material, causing thermal stresses. These stresses can distort and stretch the material.
Metallurgical relevance & risks in welding
Heat treatment distortion can lead to component wear, cracks, or uneven deformation. This impairs the functionality and safety concept of the component. In the case of weld seam distortion, the stresses can lead to hot cracks or fractures in the seam, reducing mechanical strength.
Workshop practice & instructions
To avoid heat treatment distortion, the material should be cooled slowly according to the specific manufacturing instructions. When welding, it is important to monitor the cooling position of the component and ensure that no rapid temperature differences occur. If necessary, controlled cooling with a cooling rod or cooling gas can be used.