Controlled Shot Peening

Download the Controlled
Shot Peening
brochure (2.2Mb)

High Performance

Controlled shot peening is the most cost effective and practical method of inducing surface residual compressive stresses which enhance performance and extend the life of critical components.

Applications

• Aerospace
  Wing skins, ribs, spars, stringers, brackets and fasteners, turbine and compressor blades, blisks, blums, shafts, gears, undercarriage and actuator systems for most OEM’s and on-site MRO processing worldwide
• Automotive - General and Competitive Racing
  Gears, shafts, circlips, crankshafts, connecting rods, valves, pistons, piston rings, fasteners, cam shafts, cylinder heads and blocks, compression, tension and leaf springs and uprights
• Gears
  Carburised, nitrided, induction hardened and through hardened
• Power Generation 
  Ground based turbine components including blades and disc slots
• Oil and Gas
  Oilfield drilling equipment, stabilizers, connectors, storage and pressure vessels
• General Industrial
  Architectural structures, chemical mixer shafts, marine engines and material handling equipment

Protection against material failures

Controlled Shot Peening can extend the performance characteristics by protecting the surface from operating damage and cyclic loads.

All MIC’s treatments have undergone laboratory and field testing to ensure reliability in extreme conditions to deal with the following failure modes:

• Fatigue 
• Galling 
• Fretting 
• Stress corrosion cracking
• Hydrogen assisted cracking
• Cavitation erosion
• Corrosion 
• Wear 

The Process

Controlled Shot Peening is the bombardment of a surface with small high quality spherical media called shot. Each piece of shot striking the metal acts as a tiny peening hammer imparting a small indentation or dimple on the surface.  The action of impinging the surface yields the material in tension but further movement is restrained by the core and a surface residual compressive stress results. The magnitude of the compressive stress is directly related to the base materials yield strength and is approximately equal to 80% of that value in compression.