Mechanical Stress Relief
Mechanical stress relief reduces harmful stresses by plastic deformation or cold working processes like stretching. This improves dimensional stability and prevents defects.
Physical-Chemical Mechanism of Action
Mechanical stress relief refers to reducing harmful stresses in metals through plastic deformation or cold forming processes such as stretching. This is done by applying mechanical forces that alter the material structure and distribute stresses evenly.
Metallurgical Relevance & Risks in Welding
Harmful residual stresses can lead to cracks, distortion, or fracture. Mechanical stress relief reduces this risk and increases the dimensional stability of the part, which is especially important for complex welding procedures or parts with high stress levels.
Workshop Practice & Handling Instructions
To perform mechanical stress relief, the material can be deformed by stretching or other plastic deformation methods. This should be done before welding to ensure stresses are reduced and part stability is increased. For steels with high stress levels, stretching or similar cold forming is recommended.