An investigation on forging loads and metal flow in conventional closed-die forging of preforms obtained by open-die indentation

摘要

In this paper, an experimental study has been carried out to investigate the effectiveness of the usage of the open die indented specimen as preforms of conventional closed die forging. Cylindrical billets having two different aspect ratios (Hi/Do) are indented with two different ratios and thereafter forged using a conventional closed-die set-up. Effects of indentation and aspect ratios on forging load and on die filling have been observed and compared with reported results.