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Thermal Spray Process > Surface Blasting and Shot peening

Surface Blasting and Shot peening

 

Surface Blasting and Shot peening

Shot peening is a cold working process used to produce a compressive residual stress layer and modify mechanical properties of metals. It entails impacting a surface with shot (round metallic, glass, or ceramic particles) with force sufficient to create plastic deformation. It is similar to sandblasting, except that it operates by the mechanism of plasticity rather than abrasion: each particle functions as a ball-peen hammer. In practice, this means that less material is removed by the process, and less dust created.

          Shot blasting is method through which it is possible to obtain excellent cleaning and surface preparation for secondary finishing operations.

Shot blasting is commonly used for

    - The cleaning of iron, steel, non-cast parts, forgings, etc.

    - Mechanical cleaning of sheets, rods, coils, wire, etc.

    - Shot peening to alter mechanical properties (increasing resistance to fatigue and decreasing residual stress.) 

    - Preparing surfaces to be painted, coated, etc.

 


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