EXPERIMENTAL INVESTIGATION OF MILLING PARAMETERS OF NIMONIC 75 WHILE MACHINING WITH CRYOGENIC TREATED TITANIUM CARBIDE INSERT

Abstract

The major concern identified with machining of Nickel based alloys which are difficult to machine. A high rate of tool wear and high cutting temperature is occurred during machining. Because of high temperature at cutting zone, the possibility of built up edge formation on cutting tool is occurred that’s why the tool wear is increased. The major problemfaced by any industry isto obtain theoptimal machining input parameters and minimize the cutting temperature and toolwear of a super alloy. In present work impact of cutting conditions (cutting speed V, feed rate f, depthof cut d) onoutput parameters (i.e. cutting temperature, Tool wear) have been studied during face milling of Nimonic 75 withcryogenic treated titanium Carbide Insert. Machining parameters are optimized by RSMbased BBD Technique, using thedesirability analysis for minimizing the cutting temperature, and tool wear. The study indicated that the optimalparameters for Multi Response Optimization were found to be at cutting speed(N) 2499.99 rpm, feed rate (f) 499.9 mm/min and depth of cut (d) 0.3 mm