Investigation on the Influence of the Lubrication on the Formability of Dissimilar Tailor Welded Blanks

Abstract

In sheet metal forming, many variables influence the forming operation such as the base material properties, deformation rate, forming temperature, lubrication between the punch and blank etc. This study reports the effect of different lubricants on the formability of dissimilar welded aluminium blanks. The lubricants selected for the tests are liquid, semi solid and solid based. The strain distribution profile and the forming limits of the welded blanks were studied for each and every lubricant chosen. Of the three lubricants, the welded blanks coated with Teflon lubricant yields the better results by improving the forming limits and homogenised strain distribution compared to other lubricants.