Effect of Stress Field on Closure of Center Defects in Symmetric Rolling and Asymmetric Rolling of Round Billets

• Katsumura Tatsuro

  Steel Research Laboratory, JFE Steel Corp.

• Iguchi Takaaki

  Steel Research Laboratory, JFE Steel Corp.

• Kimura Hideto

  JFE Techno-Research Corporation

• Yanagimoto Jun

  Institute of Industrial Science (IIS), The University of Tokyo

抄録

Although the closure of defects at the center of billets on rolling such billets is an important subject, a method of quantity evaluation for such closure has not yet been clarified. Therefore, to establish a method for such quantity evaluation, we study such defects using experiments and finite element analysis including asymmetric rolling, especially with respect to the integration of the hydrostatic stress Gm. The results showed that stress was widely distributed, as determined in the experiment and in the FEM analysis of rolling at the edge around an artificial central hole in which defects were simulated. Therefore, it was suggested that, to evaluate the behavior of defect closure, the size of defects and the shape of the grooved roll used should be taken into account.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 55 (12), 1834-1840, 2014

  公益社団法人 日本金属学会

キーワード

• rolling
• bar rolling
• deformation behavior
• stress field
• defect
• closure
• hydrostatic stress
• grooved roll
• asymmetric rolling

詳細情報

• CRID: 1390001204252763136
• NII論文ID: 130004704642
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.p-m2014837
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 025941183
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025941183
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/55/12/55_P-M2014837/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可