About Shot Peening

Shot peening is a cold-working process in which the material surface is peened to induce compressive stresses and thereby improve fatigue life. Shot peening is used in aerospace, automotive, mining, medical and other industries that need to improve the fatigue properties of metal components.

It is similar to sandblasting, except that it operates by the mechanism of plasticity rather than abrasion: each particle functions as a ball-peen hammer. In practice, this means that less material is removed by the process and less dust created.