Investigation of the meandering bead formation process in metal inert gas welding

Aoyama, Kai; Komen, Hisaya; Tanaka, Manabu; Konishi, Kyohei; Taniguchi, Koichi; Igi, Satoshi

doi:https://doi.org/10.1007/s40194-025-02149-5

Investigation of the meandering bead formation process in metal inert gas welding

Aoyama, Kai; Komen, Hisaya; Tanaka, Manabu et al.

Welding in the World, 2025

アクセス数:8件（2025-11-18 15:09 集計）

固定URL: https://hdl.handle.net/11094/103005

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タイトル	Investigation of the meandering bead formation process in metal inert gas welding
著者	著者名 Aoyama, Kai
	NRID 1000080847989 1000080847989 ORCID 0000-0001-8652-2982 0000-0001-8652-2982 researchmap permalink H_Komen H_Komen Scopus Author ID 57190809827 57190809827 著者名 Komen, Hisaya
	NRID 1000020243272 1000020243272 researchmap permalink read0014392 read0014392 Scopus Author ID 25641191700 25641191700 著者名 Tanaka, Manabu
	著者名 Konishi, Kyohei
	著者名 Taniguchi, Koichi
	著者名 Igi, Satoshi
キーワード等	Cathode spot
	High-speed camera
	Meandering bead
	Metal inert gas welding
	Metal transfer
内容	The version of record of this article, first published in Weld World (2025), is available online at Publisher’s website: https://doi.org/10.1007/s40194-025-02149-5
抄録	In this study, the meandering bead formation process during a Metal Inert Gas Welding (MIGW) was investigated, and the factors causing bead meandering were identified. An experimental system with six tungsten cathodes arranged in a circular pattern, capable of linear movement in the radial direction, was used to simulate the behavior of the cathode spots and the molten wire during MIGW. As a result, it was observed that when there was a bias in the distribution of the cathode spots and the welding current, molten metal droplets detached from the wire tip were carried to the side opposite to where the cathode spots and welding current were concentrated. The correlation coefficients between the welding current bias and the angle of the molten metal column, as well as the droplet transport position, were 0.92 and 0.97, respectively, indicating a strong positive correlation. From these results, it was suggested that meandering bead formation during MIGW was caused by the molten metal droplets transported intensively away from the weld line due to unbalanced driving forces acting on the molten wire, which were caused by the unbalanced cathode spot distribution and welding current. It was suggested that in MIGW, the crawling behavior of the cathode spots induced the destabilization of the molten metal droplet transfer formed at the wire tip, leading to the formation of meandering beads.
出版者	Springer Science and Business Media Deutschland GmbH
収録物名	Welding in the World
刊行年月	2025-08-27
言語	英語
ハンドルURL	https://hdl.handle.net/11094/103005
PISSN	00432288
eISSN	18786669
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1007/s40194-025-02149-5
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Welding in the World. 2025
DC.title	Investigation of the meandering bead formation process in metal inert gas welding
DC.creator	Aoyama, Kai
	Komen, Hisaya
	Tanaka, Manabu
	Konishi, Kyohei
	Taniguchi, Koichi
	Igi, Satoshi
DC.publisher	Springer Science and Business Media Deutschland GmbH
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-08-27
DC.identifier	https://doi.org/10.1007/s40194-025-02149-5
DC.subject	Cathode spot
	High-speed camera
	Meandering bead
	Metal inert gas welding
	Metal transfer
DC.description	The version of record of this article, first published in Weld World (2025), is available online at Publisher’s website: https://doi.org/10.1007/s40194-025-02149-5
DCTERMS.abstract	In this study, the meandering bead formation process during a Metal Inert Gas Welding (MIGW) was investigated, and the factors causing bead meandering were identified. An experimental system with six tungsten cathodes arranged in a circular pattern, capable of linear movement in the radial direction, was used to simulate the behavior of the cathode spots and the molten wire during MIGW. As a result, it was observed that when there was a bias in the distribution of the cathode spots and the welding current, molten metal droplets detached from the wire tip were carried to the side opposite to where the cathode spots and welding current were concentrated. The correlation coefficients between the welding current bias and the angle of the molten metal column, as well as the droplet transport position, were 0.92 and 0.97, respectively, indicating a strong positive correlation. From these results, it was suggested that meandering bead formation during MIGW was caused by the molten metal droplets transported intensively away from the weld line due to unbalanced driving forces acting on the molten wire, which were caused by the unbalanced cathode spot distribution and welding current. It was suggested that in MIGW, the crawling behavior of the cathode spots induced the destabilization of the molten metal droplet transfer formed at the wire tip, leading to the formation of meandering beads.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	103005
citation_title	Investigation of the meandering bead formation process in metal inert gas welding
citation_author	Aoyama, Kai
	Komen, Hisaya
	Tanaka, Manabu
	Konishi, Kyohei
	Taniguchi, Koichi
	Igi, Satoshi
citation_publisher	Springer Science and Business Media Deutschland GmbH
citation_language	英語
citation_date	2025-08-27
citation_journal_title	Welding in the World
citation_doi	https://doi.org/10.1007/s40194-025-02149-5
citation_public_url	https://hdl.handle.net/11094/103005

Investigation of the meandering bead formation process in metal inert gas welding

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