Effects on Machinability of Minimum Quantity Lubrication Strategy during Milling of ST52 Steel

Abstract

This study focuses on milling under sustainable cutting conditions of ST52 steel, frequently used in the manufacturing industry. ST52 steel is a good candidate as a workpiece because it is inexpensive and readily available. To achieve sustainable conditions, the cutting zone minimum quantity lubrication technology was used during processing. The experiments used three cutting speeds (120-180-240 m min-1), three feed rates (0.12-0.18-0.24 mm rev-1), and a constant depth of cut (0.5 mm). Taguchi L9 orthogonal array was used to reduce repetitions. The response parameters are surface roughness, flank wear, and cutting temperature. As a result, when compared to the dry environment, the minimum quantity lubrication environment improved surface roughness by approximately 62.37%, flank wear by approximately 9.95%, and cutting temperature by approximately 13.82%. In addition, the most effective control factors on response parameters were determined by statistical analysis.