An analysis of frictional coefficient and surface roughness in surface grinding of SKD 11 tool steel using Minimum Quantity Lubrication (MQL) and dry techniques

Abstract

This study was intended to investigate the effect of the cooling method (CM), workpiece speed (Vf), and depth of cut (doc) on frictional coefficient (FC) and surface roughness (SR) in the surface grinding of SKD 11 tool steel. CM consists of minimum quantity lubrication (MQL) and dry techniques. Power function was applied to model both FC and SR. Based on the analysis of the model, CM and VF significantly affected both responses, while doc influenced only FC. SEM photographs of the ground surfaces were also presented to compare the surface quality between MQL grinding and dry grinding.