Experimental Investigation of Vegetable Oil Based Nanofluid for Turning Operation of EN-31 Steel

The present work focuses on the performance evaluation on vegetable oil based nanofluid with zinc oxide as nanomaterials. In addition, the minimum quantity lubrication (MQL) technique is adopted for turning of EN-31 steel with uncoated carbide tool. Lubrication performance is compared with straight cutting oil. Optimization of achieved result is done. Response surface methodology and grey relation analysis is done for optimization. The experimental data was collected by performing hard turning operation on EN-31 steel using carbide tool under dry and minimum quantity lubrication condition to taguchi L9 orthogonal array. The analysis of variance (ANOVA) was performed on best performed Nanofluid and contribution of each parameter was deduced.it was found that vegetable oil based ZnO nanofluid was the best performed fluid compared to straight cutting oil where optimum surface roughness and Tool temperature at 350 ml/h lubrication flow rate for MQL system. Finally, the result of confirmation test verified the adequacy and supremacy of optimization models where performing response surface method on grey relation grade achieved better optimization result.