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Shot peening is a process of cold working
2015-08-08 11:17:18   From:   Click:

Shot peening is a process of cold working a part that increases its resistance to metal fatigue and some forms
steel shot for shot peening:
Shot peening is a process of cold working a part that increases its resistance to metal fatigue and some forms of stress corrosion.It  is  rare  that  we  go  from  one  place  to  another by  road  and  not  find  a  vehicle,  either  a lorry  or  a car  brokedown on the  road due to  fatigue  failure of axle shaft  or  the spring  and  so on,  thus  creating  obstacles  in  the flow  of  traffic  and  sometimes  resulting  in serious accidents.
 
It involves bombarding the surface of the desired part with metallic (usually steel), glass, or ceramic beads with enough force to dent the surface.
 
These   fatigue failures   can   be   reduced   and   are being   almost   eliminated   in   the   Western countries by  the  adoption  of  shot  peening  process for  increasing  the   fatigue  life  of  various components subjected to fatigue stress.

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