レーザ・アークハイブリッド溶接を厚板突合せ継手製造に適用するためのΛ形開先採用に関する一検討

Issei Uchino, Takamori Uemura, Koji Gotoh

研究成果: Contribution to journalArticle査読

抄録

Most Japanese shipyards that build general merchant ships use arc welding, but they always have the problem that the accuracy of the hull construction is poor as a result of the thermal deformation caused by arc welding. As one method to overcome this problem, it is expected to adopt laser arc hybrid welding that can suppress the total heat input as a result of heat input concentration, but the initial introduction cost is high and this welding method has a poorer gap tolerance than conventional arc welding. In addition, few experiences to apply laser arc hybrid welding for constructing the joints at the plate thickness level used for hull members of general merchant ships. An improved procedure to fabricate a butt joint with a plate with a thickness of 15 to 20 mm, which is used as a hull member of a general merchant ships is proposed in this study. Proposed procedure is that the Λ-shaped groove with a very small angle and one-pass welding by laser arc hybrid welding with CO2 gas shielded arc welding to satisfy the weld reinforcement on the front side weld bead. The performance of the joint manufactured by using our proposed procedure was confirmed according to the Guidelines for Laser Arc Hybrid Welding by a classification society Nippon Kaiji Kyokai (ClassNK). It is expected to be introduced as an alternative method of plate joint welding for hull members, especially submerged arc welding with large heat input.

寄稿の翻訳タイトルA study on adopting Λ-shape groove for laser-arc hybrid welding to construct thick plate butt welded joints
本文言語日本語
ページ(範囲)403-417
ページ数15
ジャーナルYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
38
4
DOI
出版ステータス出版済み - 2021

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 表面、皮膜および薄膜
  • 金属および合金

フィンガープリント

「レーザ・アークハイブリッド溶接を厚板突合せ継手製造に適用するためのΛ形開先採用に関する一検討<sup>*</sup>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル