LAUSR

The conventional cutting fluids are used in metal cutting processes for cooling and lubrication. However, the use of cutting fluids is creating the environmental and biological problems. In order to minimize these problems, it is essential to move towards sustainable cooling techniques. The present investigation determine the influence of sustainable cooling techniques such as cryogenic cooling, minimum quantity lubrication, Al2O3/soluble oil nanofluids based minimum quantity lubrication, SiC/soluble oil nanofluids based MQL and Al-SiC/soluble oil hybrid nanofluids based minimum quantity lubrication on output characteristics during turning of EN-24 steel. For experimentation nanofluids were formulated with accumulation of different weight percentages (0.5wt.%, 1.0wt.%, 1.5wt.%) of Al2O3, SiC and Al-SiC nanoparticles to the soluble oil. The thermal and tribological properties of Al2O3/soluble oil nanofluids, SiC/soluble oil nanofluids and Al-SiC/soluble oil hybrid nanofluids were analyzed. Individual machining performance such as surface roughness height, tool wear and specific energy lead to ambiguous understanding. So, the cumulative performance index is also calculated. The cumulative performance index is used to determine the performance of different sustainable cooling techniques during turning of EN-24 steel. The experimental results revealed that the turning performance of EN-24 steel under Al-SiC/soluble oil hybrid nanofluids based minimum quantity lubrication environment is superior then other machining environments.