Minimum Quantity Lubrication in Cold Work Drawing Process: Effects on Forming Load and Surface Roughness

Abstract

In this study, experimental analysis has been employed to evaluate the effects of minimum quantity lubrication on the deformation of aluminium workpiece over a tool. The effects of lubricant on forming loads and surface finish were evaluated under dry and lubricated conditions between die-workpiece sliding surfaces. Palm olein (PO) with dynamic viscosity of 38.9 mPa.s at 40°C in 1, 5, 10, and 20mg amounts were used as test lubricant. A constant forming speed of 10mm/s on the workpiece was used as inputs for the experimental analysis. The load-displacement behaviour was observed during the steady- state condition. It was shown that significant differences exist between lubricant quantity, load-displacement distribution and surface finish of the product.