Optimal Selection of Machining Parameters for Minimization of Elementary Energy Consumption during Machining of 304 Austenitic Stainless Steel

The dry turning was done on 304 austenitic stainless steel using a carbide insert (Tungaloy, SNMG 12 04 04). Speed, feed, and depth of cut (DOC) were the machining parameters. The chip reduction coefficient (CRC) and elementary energy consumption were the output responses. Twenty-seven experiments were performed by following the L27 Taguchi design plan-decoupled TOPSIS method. The minimal elementary energy consumption was attained at moderate speed (44.28 m/min.), high feed (0.20 mm/rev.), and low DOC (0.66 mm). This result has been validated by the fuzzy inference system (FIS) simulation. The details of minimising elementary energy consumption have been explained by implementing Taguchi design plans, TOPSIS, chip macrographs, and FIS simulation studies. The very thin continuous chip (very low CRC) was found at optimal parameters, indicating minimal energy consumption during machining. The aim of the work is to find out the machining condition at which the elementary energy consumption during machining was minimum. The validation of the optimal solution by qualitative assessment and by the FIS simulation emphasizes the novelty of the work. The nature of the study is newer in kind with validation of results. The simulation result shows the increasing trend of closeness coefficient (CC) with increased feed at moderate speed and low depth of cut (DOC).