Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas

Trinh Ngoc Quang; Le, Khoi Dang; Tashiro, Shinichi; Suga, Tetsuo; Sasakura, Shuji; Fukuda, Kazuhiro; Murphy, Anthony B.; Bui, Hanh Van; Tanaka, Manabu

doi:https://doi.org/10.1016/j.jmapro.2024.06.047

Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas

Trinh Ngoc Quang; Le, Khoi Dang; Tashiro, Shinichi et al.

Journal of Manufacturing Processes, 2024, 124, 590-603

Number of Access:751（2025-08-14 18:26 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98153

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Title	Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas
Creator	CreatorName Trinh Ngoc Quang
	CreatorName Le, Khoi Dang
	NRID 1000070432424 1000070432424 researchmap permalink d8dshw3z d8dshw3z Scopus Author ID 15833130200 15833130200 CreatorName Tashiro, Shinichi
	researchmap permalink TS2529 TS2529 NRID 1000010863102 1000010863102 CreatorName Suga, Tetsuo
	CreatorName Sasakura, Shuji
	CreatorName Fukuda, Kazuhiro
	CreatorName Murphy, Anthony B.
	CreatorName Bui, Hanh Van
	NRID 1000020243272 1000020243272 researchmap permalink read0014392 read0014392 Scopus Author ID 25641191700 25641191700 CreatorName Tanaka, Manabu
Subject	Arc plasma
	Flux column
	Flux-cored arc welding
	Metal transfer
	Metal vapor
	Rutile flux-cored wire
	Shielding gas
Description	Trinh N.Q., Le K.D., Tashiro S., et al. Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas. Journal of Manufacturing Processes 124, 590 (2024); https://doi.org/10.1016/j.jmapro.2024.06.047.
Abstract	In this study, we analyzed the impact of carbon dioxide concentration in argon–carbon dioxide shielding gas on droplet transfer characteristics in rutile flux-cored arc welding, employing titanium oxide as a primary wire flux component. The welding process was carried out at a welding current of 190, 220, 250, 280, and 310 A under an argon–CO₂ shielding gas mixture with six levels of CO₂ concentration of 0, 5 %, 10 %, 15 %, 20 %, and 25 % for a parametric study. Unlike the conventional solid wire welding trend, where the droplet transfer frequency decreases with the increase in carbon dioxide concentration, an increase in metal transfer frequency was observed with the increase in CO₂ concentration from approximately 5 % to 20 %. The concentration reaching the maximum frequency was 20 % at 190 A, which decreased as the welding current increased, reaching 5 % at 310 A. Droplet initiation at the lower sheath end is succeeded by a gradual downward movement along the flux column's side after a few milliseconds. Upon reaching the lower end, the droplet forms a neck and undergoes separation. Thus, the length of the flux column directly impacts the duration of one droplet transfer cycle. The length was decreased by arc constriction when increasing CO₂ concentration appropriately to concentrate beneath the flux column or by increasing the welding current to raise the arc temperature, which contributed to melting and shortening the flux column.
Publisher	Elsevier Ltd
Source Title	Journal of Manufacturing Processes
Volume (Issue)	124
Page	590-603
Date of Issued	2024-08-30
Language	English
Handle URL	https://hdl.handle.net/11094/98153
PISSN	15266125
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.jmapro.2024.06.047
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCTERMS.bibliographicCitation	Journal of Manufacturing Processes. 2024, 124, p. 590-603
DC.title	Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas
DC.creator	Trinh Ngoc Quang
	Le, Khoi Dang
	Tashiro, Shinichi
	Suga, Tetsuo
	Sasakura, Shuji
	Fukuda, Kazuhiro
	Murphy, Anthony B.
	Bui, Hanh Van
	Tanaka, Manabu
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	English
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-08-30
DC.identifier	https://doi.org/10.1016/j.jmapro.2024.06.047
DC.subject	Arc plasma
	Flux column
	Flux-cored arc welding
	Metal transfer
	Metal vapor
	Rutile flux-cored wire
	Shielding gas
DC.description	Trinh N.Q., Le K.D., Tashiro S., et al. Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas. Journal of Manufacturing Processes 124, 590 (2024); https://doi.org/10.1016/j.jmapro.2024.06.047.
DCTERMS.abstract	In this study, we analyzed the impact of carbon dioxide concentration in argon–carbon dioxide shielding gas on droplet transfer characteristics in rutile flux-cored arc welding, employing titanium oxide as a primary wire flux component. The welding process was carried out at a welding current of 190, 220, 250, 280, and 310 A under an argon–CO₂ shielding gas mixture with six levels of CO₂ concentration of 0, 5 %, 10 %, 15 %, 20 %, and 25 % for a parametric study. Unlike the conventional solid wire welding trend, where the droplet transfer frequency decreases with the increase in carbon dioxide concentration, an increase in metal transfer frequency was observed with the increase in CO₂ concentration from approximately 5 % to 20 %. The concentration reaching the maximum frequency was 20 % at 190 A, which decreased as the welding current increased, reaching 5 % at 310 A. Droplet initiation at the lower sheath end is succeeded by a gradual downward movement along the flux column's side after a few milliseconds. Upon reaching the lower end, the droplet forms a neck and undergoes separation. Thus, the length of the flux column directly impacts the duration of one droplet transfer cycle. The length was decreased by arc constriction when increasing CO₂ concentration appropriately to concentrate beneath the flux column or by increasing the welding current to raise the arc temperature, which contributed to melting and shortening the flux column.
DC.rights	This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	98153
citation_title	Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas
citation_author	Trinh Ngoc Quang
	Le, Khoi Dang
	Tashiro, Shinichi
	Suga, Tetsuo
	Sasakura, Shuji
	Fukuda, Kazuhiro
	Murphy, Anthony B.
	Bui, Hanh Van
	Tanaka, Manabu
citation_publisher	Elsevier Ltd
citation_language	English
citation_date	2024-08-30
citation_journal_title	Journal of Manufacturing Processes
citation_volume	124
citation_firstpage	590
citation_lastpage	603
citation_doi	https://doi.org/10.1016/j.jmapro.2024.06.047
citation_public_url	https://hdl.handle.net/11094/98153

Optimization of metal transfer in rutile flux-cored arc welding through controlled CO₂ concentration in argon–CO₂ shielding gas

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