Study on the Upset Welding of Shear Reinforcement with Large Diameter

• HAYASHI KOHEI

  Graduate School of Science and Technology, Kumamoto University

• TERASAKI HIDENORI

  Graduate School of Science and Technology, Kumamoto University

• MIYAHARA YU

  Graduate School of Science and Technology, Kumamoto University

• TANAKA MANABU

  Joining and Welding Research Institute, Osaka University

• KONISHI KYOHEI

  Joining and Welding Research Institute, Osaka University

• INOUE HIROSHI

  Kansai Law & Patent Office

• HAYASHI YOSHINOBU

  Keishin Kougyou

抄録

In the current standard, diameters of upset weldable steel bar are restricted 16mm or less. In this study, we visualized the changes of welded part and the changes of temperature in the upset welding by using a high-speed camera. The specimens used in the experiment are SD390 steels with diameters of 19mm or more. Thus, in the upset welding of shear reinforcement with diameter of 32mm, it is possible to achieve a 100% joint efficiency by ensuring the optimum Joule heat by adjusting the welding pressure and the electric current. The two-color thermometry revealed that ensuring the joining temperature range (1300°C-1400°C) is important to secure the safe welding.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 35 (2), 9s-12s, 2017

  一般社団法人 溶接学会

キーワード

• Upset welding
• Welding phenomena
• Temperature distribution
• Diameter of bar
• Electric current
• Welding pressure
• Shear reinforcement
• SD390

詳細情報

• CRID: 1390001204727050368
• NII論文ID: 130006329494
• DOI: 10.2207/qjjws.35.9s
• ISSN: 24348252
• ISSN: 02884771
• Web Site: https://www.jstage.jst.go.jp/article/qjjws/35/2/35_9s/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可