When a material is bombarded with small, round steel shot (i.e. bb's, buckshot) at high velocities, it is termed shot peening. This process will increase the resistance to fatigue failure by adding dislocations and hardening the surface, which is where a crack may begin due to surface flaws.
A cold-working process in which the material surface is peened to induce compressive stresses and thereby improve fatigue life.
A process whereby hard, small, spherical objects (such as metallic shots) are propelled against a metallic surface for the purpose of cleaning or descaling that surface.
Blasting the surfaces of spring material with steel or glass pellets to induce compressive stresses that improve fatigue life.
The bombardment of a component surface with steel or ceramic shot. Produces a residual compressive stress in the surface and improves fatigue and stress corrosion performance.
The procedure of impacting a metal surface with a high-velocity stream of metal shot or glass beads for the purpose of cleaning, or improving resistance to stress corrosion by producing compressive stress.
A blast machine procedure that prepares a part or surface to withstand stress or fatigue breakdown.
process used to work-harden metals.
Shot peening is a process used to produce a decorative finish and to modify mechanical properties of metals. It entails impacting a surface with shot (round metallic particles) with force sufficient to create dimples and with enough shot that those dimples overlap. It is similar to sandblasting, except that it operates by the mechanism of plasticity (physics) rather than abrasion: each particle functions as a ball-peen hammer.
