FORMABILITY OF SUPERPLASTIC DEEP DRAWING PROCESS WITH MOVING BLANK HOLDER FOR AA1050-H18 CONICAL CUPS

A. Chennakesava Reddy

Abstract: In this present work, a statistical approach based on Taguchi Techniques and finite element analysis were adopted to determine the formability of conical cup using warm deep drawing process. The process parameters were temperature, coefficient of friction, strain rate and blank holder velocity. The experimental results were validated using a finite element software namely DFORM. The AA1050–H18 sheets were used for the superplastic deep drawing of the conical cups. The strain rate by itself has a significant effect on the effective stress and the height of the conical cup drawn. The formability of the conical cups was outstanding for the surface expansion ratio greater than 2.0.

Keywords: AA1050-H18, superplastic deep drawing, blank holder velocity, temperature, coefficient of friction, strain rate, conical cups, formability.

DOI: https://doi.org/10.15623/ijret.2015.0408023