THE RESEARCH ON DETERMINATION OF THE OPTIMUM PARAMETERS FOR LUBRICATION FOR SKD11 STEEL SURFACE GRINDING

This article presents empirical research for determining the optimal value of the flow and concentration of lubricant when processing SKD11 steel on the surface grinder. In this research, the central composite design is used with a matrix of 13 experimental points when changing the input parameters of the lubrication parameters. The experiment is carried out with 36A60LVgrinding wheel and TECTYL COOL 290MC lubricant. Based on the experimental results, the influence degree of the concentration and the flow of lubricant on surface roughness has been analyzed. The results show that the parameters of the flow and concentration of lubricant as well as the interaction between such two parameters significantly affect the surface roughness of the workpiece, in which the influence degree of the solution concentration on the surface roughness is greater than that of the solution flow. Later, this research also shows the optimal values of the two above parameters.