Sustainable Machining Using Minimum Quantity Lubrication with Nano Fluid*

Modern workshops and manufacturing industries are searching the solutions regarding minimization of coolant in metal removing operations along with environmental and economic impact. To overcome the issue of less heat carrying capacity and disposal of coolant minimum quantity lubrication is a better solution. Therefore, hybrid nano fluids are the mixtures of base cutting fluid and nano particles improves lubricating properties, and heat carrying capacity of nano-cutting fluid. In the present work study nano-cutting fluid is prepared by adding 0.2 % MWCNT nano particles to the base cutting fluid. Comparative study of surface roughness, cutting temperature, during machining of AISI 4340 with dry, conventional cutting fluid and nano-cutting fluid is studied. Present research work shows, due to better lubrication, the corresponding temperature rise is reduced by 26% as compared to flood cooling system. From research work, it is also shown that during MQL turning of alloy steel AISI 4340 with nano fluid is an appropriate cutting fluid as compared to conventional cutting fluid. This study clearly reveals that the work piece surface roughness, cutting temperature are reduced by the using nano-cutting fluid compared to dry machining and machining with conventional cutting fluid.