Abstract
SUMMARY Two methods of measuring plastic deformation in tungsten carbide cutting tools are presented. This deformation results from the combined effect of pressure and temperature developed at the cutting-edge and precedes visible flank wear. Some of the research carried out into stress distribution, heat generation and their dual contributions to plastic deformation is also discussed. A suggestion is made that a measurement of plastic deformation could well fix the upper limit of cutting speeds and that such a measurement could possibly provide an alternative method to the traditional flank wear test used in tool life assessment.
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