Shot Peening
Shot peening is a method of cold working the surface of a metal components by the impact of a stream of spherical particles. The shot is propelled at the components surface by means of air or discharged by centrifugal force from an impeller wheel. When the shot particles strike a components surface, they cause the surface to plastically deform, with hammer head like impressions into the surface.
ABOUT THE SERVICE
IST’s shot peening service is unique - it is one of its kind, dedicated specifically to enhancing the fatigue performance of springs. Over 40 years of research and experience of shot peening spring and non-spring components ensures that we use the optimum process parameters to achieve the best performance for your springs.
THE BENEFITS
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Improves the life of the component
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Improves compressive stresses
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Removal of burrs and metal flashing
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Removal of scale
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Reducing the risk of surface cracks
Our service includes steel, glass and ceramic media, spring wire / section sizes from 0.3mm (0.012″) upwards plus full technical back-up all rigorously quality controlled to ISO 9001. Our post peening services include:
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Low temperature heat treatment
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Temporary corrosion protection
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Pre-stressing to stablise dimensions
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Acid dip and passivation for stainless steel springs
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Fatigue testing to validate the efficiency of the shot peening process
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Duplex peening and strain peening available for suitable applications
Goodman diagrams showing the benefits of shot peening, with the life of the spring in its as-received condition expected to achieve 100,000 cycles in comparison to a shot peened spring exceeding 10,000,000 cycles.
