Roughness Generated in Surface Grinding of Metals

[+] Author and Article Information
M. S. Bobji, K. Venkatesh, S. K. Biswas

Department of Mechanical Engineering, Indian institute of Science, Bangalore-560 012, India

J. Tribol 121(4), 746-752 (Oct 01, 1999) (7 pages) doi:10.1115/1.2834131 History: Received June 19, 1998; Revised March 08, 1999; Online January 24, 2008


When a metal is surface ground the roughness generated is the summation of a function of the wheel roughness and the roughness due to wheel attrition and damage to the workpiece. We identify this function here as a maximum envelope profile, which is fractal within certain cut off wavelengths determined by the dressing conditions of the wheel. Estimating the global displacement of the binder-grit-workpiece system from the maximum envelope power spectra, we determine the plastic indentation of the workpiece at characteristic length scales using simple contact-mechanical calculation. The estimated roughness corresponds well with that recorded experimentally for hard steel, copper, titanium and aluminium.

Copyright © 1999 by The American Society of Mechanical Engineers
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