Design of the semi-closed die for shaping the thick coin-like carbon steel parts in a single operation

Abstract The current study strives to improve the precision and accuracy of a die reduce unnecessary production steps. Upset cold forging for thick coin-like carbon steel parts were studied redesigned single operation. slug used in this experiment was an annealed AISI 1020 bar sheared into cylinders having height diameter ratio (h 0 /d ) 2.07. design problem is prevent inclined surface due roughness when it loaded cavity. semi-closed with fixed support at position 0.25 initial slug. Six springs employed set start-to-finish during forging. results showed that slugs rough uneven surfaces, h 2.07, could successfully undergo Furthermore, upset forged coin designed have straight 2.4 mm outer edge, providing area mechanical fingers grasp workpiece transfer subsequent steps work process vertical and/or horizontal set.