What is shot peening?
- Shot peening is the cold working and polishing of the spring surface by bombardment with spherical shot or glass beads
- The polishing retards possible crack formation
- Shot peening increases durability by approximately 30%
- For stainless spring steels, glass beads are used; for other spring steels, rounded wire shot from 0.6 mm to 0.9 mm is used, depending upon the diameter of the spring wire