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9
Abrasive Finishing Processes
9.1 Introduction
The geometric characteristics of machined surfaces affect their wear resistance.
In this regard, large surface macro-irregularities result in nonuniform wear,
with the projecting peaks of the surface worn off rst. In the case of surface
waviness, the crests wear down rst as the friction and specic pressure will be
higher at these than for uniform bearing surfaces of mating parts. Microsurface
irregularities are subjected to elastic deformation and crushing or shearing
during contact with other sliding surfaces. The valleys between the ridges of a
machined surface may be the focus of concentra ...