チタンのティグ溶接におけるシールドガスの挙動解析

• 和田 洋二

  山九株式会社

• 井上 智博

  山九株式会社

• 塚本 寛

  北九州工業高等専門学校

• 山口 富子

  九州工業大学

• 西尾 一政

  九州工業大学

書誌事項

タイトル別名

• Computational Fluid Dynamics Analysis of Shielding Gas Behavior in Tungsten Inert Gas Welding of Titanium Plate

抄録

To minimize the volume of argon required for on-site TIG welding of titanium plate, we investigated the behavior of argon flow in a trailing-shielding box by means of computational fluid dynamics (CFD) simulations. In this study, we designed a model of a solid rectangular shielding box consisting of 9.5×10⁵ tetrahedral elements. Then, argon flow was simulated for various shielding parameters, namely, the gap between the box and floor and the argon supply rate. In an experiment using dry ice mist to visualize the flow of argon, we investigated the flow from a shielding box model consisting of acrylic plates for various shielding parameters. In this manner, we studied the relation between the oxygen content in the shielding box and the shielding parameters. Then, a conventional shielding box and a prototype shielding box were evaluated experimentally. We confirmed the relation between the oxygen content in the shielding boxes and the degree of oxidation on the bead surface in TIG arc melt-run welding of titanium plate. The experimental results show that the simulation model used in the CFD simulations allowed the behavior of argon to be predicted. We conclude that the simulation model is useful for improving the structure of the shielding box.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 28 (4), 383-390, 2010

  一般社団法人 溶接学会

キーワード

• CFD
• Titanium plate
• TIG welding
• Shielding gas
• Oxygen content

詳細情報

• CRID: 1390001204726939136
• NII論文ID: 130004445656
• DOI: 10.2207/qjjws.28.383
• ISSN: 24348252
• ISSN: 02884771
• 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