Fine Piercing of Amorphous Electrical Steel Sheet Stack Using Micro-/Nano-Textured Punch

Tomomi Shiratori*, Yukiya Komori, Yohei Suzuki, Kohta Abe, Tatsuhiko Aizawa

*この論文の責任著者

研究成果: 書籍の章/レポート/会議録会議への寄与査読

1 被引用数 (Scopus)

抄録

The amorphous electrical steel sheets were expected to be used for motor cores because of their high strength and low iron loss even in high frequency electromagnetic field. However, their high strength without ductility caused various difficulties in piercing them. In addition to reduce the punch and die wear in piercing, their shearing performance must be improved to minimize the affected damages induced at the vicinity of punched out holes. In the present paper, the shearing behavior in piercing the amorphous electrical steel sheet stack was investigated by using the micro-/nano-textured punches. In particular, the effect of nano-texturing orientation and the punch-to-die clearance on this piercing behavior was discussed for improvement of the sheared blank quality. In the piercing experiments, five sheets were stacked into a specimen. The affected damages induced at the vicinity of pierced holes were analyzed by SEM (Scanning Electron Microscopy) and three dimensional profilometer. The punch side surfaces were also observed by SEM to analyze the adhesive behavior of debris particles from the specimen work on them. As a result, it was confirmed that the micro-/nano-textured punch improves the quality of the sheared surface when shearing amorphous electromagnetic steel sheets, resulting in lower shear load, and the tool adhesion was reduced while the hole diameter variation was suppressed. A shearing mechanism by the micro-/nano-textured punch was discussed to develop the piercing process with less affected damages and less iron loss.

本文言語英語
ホスト出版物のタイトルProceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity - ICTP 2023 - Volume 4
編集者Katia Mocellin, Pierre-Olivier Bouchard, Régis Bigot, Tudor Balan
出版社Springer Science and Business Media Deutschland GmbH
ページ89-99
ページ数11
ISBN(印刷版)9783031420924
DOI
出版ステータス出版済み - 2024
イベント14th International Conference on the Technology of Plasticity, ICTP 2023 - Mandelieu-La, フランス
継続期間: 2023/09/242023/09/29

出版物シリーズ

名前Lecture Notes in Mechanical Engineering
ISSN(印刷版)2195-4356
ISSN(電子版)2195-4364

学会

学会14th International Conference on the Technology of Plasticity, ICTP 2023
国/地域フランス
CityMandelieu-La
Period2023/09/242023/09/29

ASJC Scopus 主題領域

  • 自動車工学
  • 航空宇宙工学
  • 機械工学
  • 流体および伝熱

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