Effect of nano-minimum quantity lubrication on cutting temperature and surface roughness of milling AISI D3 tool steel

Abstract

Machining is the manufacturing process used to create components that are the right size and shape. For machining processes, numerous cooling methods are employed. Surface finish of workpiece is affected by heat generated at tool workpiece interface because of friction. The machining technologies include conventional cooling, minimum quantity lubrication, cryogenic cooling, and nanofluid cooling. Because of its excellent qualities, AISI D3 is appropriate for creating blanking and shaping tools. It has high strength, good hardenability, and resistance to wear. The major aim of this study is to see how a tiny amount of lubricant combined with TiO2 nanofluids affects the cutting temperature and surface roughness when milling AISI D3 material. The results suggest that using nanoparticles in combination with lubricant reduces cutting temperature and improves surface roughness. Because the cutting fluid's thermal conductivity has increased, adding TiO2 to MQL results in cutting temperatures of 215.6 °C, 207.1 °C, 199.2 °C, and 195.1 °C for 0.3 %, 0.5 %, 0.7 %, and 0.9 % TiO2, respectively. Surface roughness (Ra) values for 0.3 %, 0.5 %, 0.7 %, and 0.9 % TiO2 in MQL are 0.501, 0.498, 0.481, and 0.455, respectively. A 0.9 % TiO2 nanoparticle concentration is believed to be superior for lower cutting temperatures and better surface quality.