Optimizing Roughness And Residual Stresses
Through Controlled Shot Peening And Isotropic
Finishing Of Surfaces
Author(s)
A. Zanini
Abstract
Controlled shot peening and the related beneficial compressive residual stresses
has long been a powerful weapon in the engineering designer’s armory in
combating fatigue, stress corrosion, fretting and wear. As requirements for
improved performance increase, surface engineering is becoming more important
and the benefits of controlled shot peening are being incorporated into the design
of components. In conjunction with controlled shot peening, isotropic finishing
gives further life improvement to the already highly stressed parts. isotropic
Finishing has been developing as a post shot peening treatment in situations
where metal to metal contact occurs, and low friction is required: the
combination of beneficial residual stress and roughness control are essential on
modern applications to extend life and improve performance. It is not necessary
to remove all of the witness of shot peening, but a percentage resulting in a
matrix of load bearing smooth areas interspersed with valleys for oil pockets,
reducing Ra values and providing a negative Rsk.
Keywords: shot peening, isotropic finishing, superfinishing, residual stress,
roughness, microhoning.
Keywords
Keywords: shot peening, isotropic finishing, superfinishing, residual stress,
roughness, microhoning.
Related Book
Other papers in this volume
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