Tool wear effects on green and WCO/MoS2 nanofluid clean machining

Abstract

The philosophy of conventional machining is use of hard tool to machine soft or less hard materials. Though the hard tool is used for machining, the high friction at interface causes the wear or damage of tool. The tool wear or damage effects on the machined surfaces and degrades the quality gradually. Hence tool wear is considered as an important measure of performance in the machinability investigation. This investigation compares the tool wear on conventional green machining and proposed wet machining of SAE1144 steel. Four different Grade Nanofluids prepared with four different concentration of Molybdenum disulfide Nano-particles (0.10 wt%, 0.15 wt%, 0.20 wt%, 0.25 wt%). Other process independent parameters are also varied at four levels like Cutting Velocity (40, 90, 140 and 190 m/min), Tool Feed (0.05, 0.10, 0.15 and 0.20 mm/rev) and Nose Radius (0.30, 0.60, 0.90 and 1.20 mm). Taguchi L16 experimental Design used for conducting experiments. The experimental results are statistically validated and found significant and acceptable. The proposed novel nanofluid based wet machining reduced the average tool wear of 38% than conventional green machining.