STUDY OF SURFACE WEARING ABILITY IN RELATION TO SOME TECHNOLOGICAL FACTORS .2. EFFECT OF THE METHOD OF SURFACE FINISHING AND RUNNING-IN

The influence of surface finishing methods on surface wearing ability is discussed. The surface wearing ability is influenced by both inherent roughness characterized by the centre-line average and the method of finishing owing to the presence of surface irregularities and processing defects which are not usually detected by stylus measurement. Smoothing of asperity peaks by running-in leads to a lower wearing ability. The geometrical characteristics of the finished surface are related to its wearing ability. The coefficient of friction determined by a wearing ability test is an approximate measure of wearing ability. © 1979.