Basic study of die wall friction in ejection by lateral pressure measurement with the dual partitioning die in compaction

Taku Iwaoka, Yukiko Ozaki, Akira Fujiki

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

In powder compaction, the ejection characteristics of green compact held in the die affect friction between the green compact side and die wall. The ejection characteristics are important factors for final formability of green compact. Therefore, this research studied factors that affect ejection friction. For ejection friction factors, we sought to measure lateral pressure that acts on the die wall, from compacting until ejection. We found that an increase in ejection friction coefficient does not necessarily increase ejection pressure. This phenomena was caused by lubricant that the compact supplies to the wall. By defining concrete material coefficient for powder, ejection characteristics have been explained. We found that powders with simpler shapes and/or lower yield strengths have superior ejection characteristics.

本文言語英語
ページ(範囲)422-430
ページ数9
ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
62
8
DOI
出版ステータス出版済み - 8 1 2015
外部発表はい

All Science Journal Classification (ASJC) codes

  • 機械工学
  • 産業および生産工学
  • 金属および合金
  • 材料化学

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