SYSTEM AND PROCESS FOR FORMING BATTERY CANS

摘要

A process for producing a battery can in a transfer press comprises drawing a metal cup in a first station to form an elongated cylinder, ironing the elongated cylinder in a second station, and redrawing the elongated cylinder in a third station. In either or both the drawing and ironing steps, the cup or the elongated cylinder may be processed in more than one station. The process includes a final redraw station for redrawing the cylinder so as to roughen the inner surface of the battery can to improve its electrical properties.