It is a method of cold working in which compressive stresses are induced in the exposed surface layers of metallic parts by the impingement of a stream of shots directed at a metal surface at high velocity under controlled conditions.
Shot Peening when applied on following components increases its service life
Pins – 400-1900%.
Shafts – 700 %
Helical springs – 3500 %
Gears – 30 %
Valves – 700 %
Component: Aircraft propeller blade on Face and Camber
Advantages: Stress corrosion resistance, resistance to fatigue failure.
Component: Compressor crank Shaft radii
Advantages: Induce compressive stress to improve fatigue failure.
Component: Crankshaft gear, Pinions
Advantage: Resistance to fatigue failure, stress corrosion resistance, lubrication
Components: PE granules transportation pipes
Advantages: Increase in flow rate, prevention of Angel hair formation, prevention of classifier choking,
Components: Collars
Advantages: Anti galling, stress corrosion resistance, resistance to fatigue failure.
Component: Centre shaft of Roll assy (5mtrs long)
Advantages: Resistance to fatigue failure