21st International Research/Expert Conference
This paper presents an investigation into the MQL turning process of X5CrNi18-10 stainless steel with the objective of screening and selecting the most important MQL parameters on machinability of austenitic stainless steel. Effects of selected MQL parameters such as flow rate of vegetable-based oil (10 and 50 ml/h) and tap water (300 and 1700 ml/h), nozzle direction relative to cutting tool (rake and flank face), spray distance (30 and 50 mm), number of applied nozzles (1 and 2) and cutting oil type in means of its physical properties (39 and 95 mm 2 /s) were studied. In order to analyze the effect of MQL parameters on the quality characteristics of surface roughness and cutting forces, the cutting parameters including cutting speed, feed rate and depth of cut were kept constant for all experiments. A standard two level Taguchi orthogonal array L16 (2 6 ) was employed to select the most influential parameters. Results indicated that the most important parameters for simultaneous reducing of surface roughness and cutting forces were oil and water flow rate followed by the spray distance.