Machinability study of stainless steel AISI 304 under the influence of copper oxide nanoparticles dispersed emulsifier cutting fluid

Quality machining on stainless steel AISI 304 is achieved by reducing the interface temperature generated due to high hardness and compressive frictional force. Temperature rise during the turning operation was observed to cause a weak tool nose, and machining surface. Enhanced lubricant properties can alleviate these issues and help reduce tool nose wear while increasing machined surface quality. Nano‐lubricants have been prepared to meet the functional requirements for machining. Emulsifier oil‐based nanofluids perform exceptionally well in heat transfer during machining. The present investigation focuses on copper oxide nanoparticles addition in “Society of Automotive Engineers 30” emulsifier oil at two different weight percentage: 1.5 wt.‐% and 2.25 wt.‐%, aiming to improve heat transfer and machined surface quality. In this experimental study, a computer numerical control machine tool, DCMT120404 insert, tool dynamometer, and infrared pyrometer are utilized for the machining operation. It was observed that 2.25 wt.‐% copper oxide mixed emulsifier‐nano cutting fluid exhibited minimum cutting force and work‐tool interface temperature while enhancing the surface quality.