Shot Peening Machines is a cold working process in which the surface of a part is bombarded with small spherical media called shot. Precicut Engineers manufactures Shot Peening Machines.
Precicut Engineers also manufactures wide range of Shot Blasting Machines. Shot Peening Machines are available with Compressive stresses, which are beneficial in increasing resistance to fatigue failures, corrosion fatigue, stress corrosion cracking, hydrogen assisted cracking, fretting, galling and erosion caused by cavitations. Each piece of shot striking the material acts as a tiny peening hammer, imparting to the surface a small indentation of dimple. In order for the dimple to be created, the surface fibres or the material must be yielded in tension. Below the surface, the fibres try to restore the surface to its original shape, thereby producing below the dimple, a hemisphere of cold-worked material highly stressed in compression. Overlapping dimples develop an even layer of metal in residual compressive stress. Benefits obtained due to cold working include work hardening, intergranular corrosion resistance, surface texturing, closing of porosity and testing the bond of coatings.
