SOME INVESTIGATIONS ON THE WEAR OF COATED CARBIDE TOOLS

Abstract

In the history of cutting tools, coated carbide tool is one of e latest developm9nts. the Special feature of this tool is its considerably increased tool life as compared to carbide tools A3 the coated carbide tool. is one of the la tas t developnD3flts, much work is not available regaxdJng Its wear characteristics. 6o in this work the characteristics of different wear parameters of coated carbide tools have been studied under v ar ious Cu tt in g con dit ions . The study also has been made about the primary groove width as a tool life indicator. Al. so the su i tab it ity ar the toot rear weight as a criterion for tool life measurement, in the case of coated carbide tool has been discussed. tir the r, cork relating to total tool failure due to chip notching and its breaking into primary groove at low speeds and breaking of crater wear Into the secondary groove at high speeds of cutting as reported by Venkatesh, has also been investigated.