Abstract
Machining occupies a prominent place in engineering industries. Dissipating of heat form the cutting zone has become an important factor for sustainability of machining industry. With increasing attention on environment and health impacts, the governmental regulation is forcing industries to reduce the use of conventional lubricants. With this focus is shifted towards biodegradable oils and Minimal Quantity Lubrication (MQL). Further improvement can be done by incorporating nanoparticles in lubricants. Experimental tests were conducted to find out appropriate biodegradable lubricating oil. In this study Palm oil and coconut oils were considered and compared to dry lubricating condition. Nanofluids were prepared in-situ with incorporations of hybrid nanoparticles (CuO-ZnO) with 50:50 combinations. The machining tests were carried out on AISI1018 steel. The inserts and tool holders used were from Kennametal beyond blast with ISO designation MCLNR2020K12BB and CNGG 120408. The objective of this work was to find out the effect of various biodegradable hybrid nanofluids and machining parameters on surface roughness, while machining AISI 1018 steel. The results reported that with coconut oil as basefluid incorporated with hybrid CuO and ZnO (50:50) combination nanoparticles gave a better result compared to other combinations
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