Application of Electrohydraulic Forming for low volume and prototype parts

Abstract

Electrohydraulic forming process enables forming of panels from Dual Phase steels in case the strain level required to fill the shape exceeds formability limit. Filling of the die cavity was conducted in nine discharges to allow for smoother materials flow from the flanges. Additional formability benefit was obtained by preforming operation which was based on bulging the areas of low strain adjacent to heavily stretched areas of the blank. Filling of all the radii was achieved during final higher energy discharges.