An Innovative Green Cooling Approach Using Peltier Chip in Milling Operation for Surface Roughness Improvement
Surface roughness is one of the key quality parameters of the finished product. During any machining operation, high temperatures are generated at the tool-chip interface impairing surface quality and dimensional accuracy of products. Cutting fluids are generally applied during machining to reduce temperature at the tool-chip interface. However, usages of cutting fluids give rise to problems such as waste disposal, pollution, high cost, and human health hazard. Researchers, now-a-days, are opting towards dry machining and other cooling techniques to minimize use of coolants during machining while keeping surface roughness of products within desirable limits. In this paper, a concept of using peltier cooling effects during aluminium milling operation has been presented and adopted with an aim to improve surface roughness of the machined surface. Experimental evidence shows that peltier cooling effect provides better surface roughness of the machined surface compared to dry machining.
 N. Suresh Kumar Reddy and P. Venkateswara Rao, “Experimental investigation to study the effect of solid lubricants on cutting forces and surface quality in end milling,” Int. J. Mach. Tools Manuf., vol. 46, no. 2, pp. 189–198, 2006.
 P. S. Sreejith and B. K. Ngoi, “Dry machining: Machining of the future,” J. Mater. Process. Technol., vol. 101, no. 1, pp. 287–291, 2000.
 U.S. Dixit, “Dry machining,” in Environmentally Friendly Machining, Applied Sciences and Technology, Springer, 2012.
 B. Davoodi and A. H. Tazehkandi, “Experimental investigation and optimization of cutting parameters in dry and wet machining of aluminum alloy 5083 in order to remove cutting fluid,” J. Clean. Prod., vol. 68, pp. 234–242, 2014.
 P. S. Sreejith, “Machining of 6061 aluminium alloy with MQL, dry and flooded lubricant conditions,” Mater. Lett., vol. 62, no. 2, pp. 276–278, 2008.
 F. Klocke and G. Eisenblatter, “Dry cutting,” Ann. CIRP, vol. 46, no. 2, pp. 519–526, 1997.