What is one method to relieve stress on metal during processing?

Burnishing is indeed a method used to relieve stress on metal during processing. This technique involves rubbing the surface of the metal with a hard tool or abrasive material, which helps to redistribute surface stress. When a metal part undergoes processes such as forming or machining, it can develop internal stresses that may lead to warping or failure under load. By burnishing, the regularity of the surface is improved, while also aiding in the compaction of the surface material, resulting in a more uniform distribution of stress and enhancing the overall integrity of the part.

The effectiveness of burnishing makes it particularly valuable in applications where precise tolerances and minimized defects are critical. This method not only helps in stress relief but also improves surface finish and can enhance fatigue resistance, making it a preferred choice in metal processing.