A triple-wire indirect arc welding method with high melting efficiency of base metal

Liu, Liming; Hu, Chenghui; Yu, Shibao; Song, Gang

doi:10.1016/j.jmapro.2019.05.022

Cited by 23 publications

(5 citation statements)

References 16 publications

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“…In recent years, the researches on TW-GIAW mainly focused on the medium and thick plate welding, droplet transfer and weld formation, but the field regarding the applicability of TW-GIAW for AM has not been reported [14][15][16][17]. According to the research of Fang et al [15], there was a convex weld formed in the TW-GIAW, which was not conducive to the next weld layer complete fusion.…”

Section: Introductionmentioning

confidence: 99%

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Liu,

Xu,

et al. 2024

Preprint

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Continuous contact transfer mode in bypass coupling triple-wire indirect arc welding (BCTW-GIA) is proposed to pursue an optional way to ensure the high deposition rate and obtain stable depositing process. The arc behaviors, droplet transfer and process stability with different distance between the tips (d1) of the main wire and side wires and the feeding speed of main wire (FSM) were studied. With the increase d1 and FSM, the droplet transfer mode of main wire varied from explosive transfer to short-circuit transfer to bridge transfer. When the d1 was greater than 4 mm, the continuous contact transfer bypass coupling triple-wire indirect arc welding can be realized and the welding process stability was improved. With the d1 adjusted from 0 mm to 6 mm, the standard deviation of the current dropped from 123.8 to 53.8 and its variation coefficient from 117.33–39.24% at FSM = 1 m/min. The weld penetration and weld width reduced with the FSM increasing, while the weld reinforcement gradually increased.

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Section: Introductionmentioning

confidence: 99%

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Liu,

Xu,

et al. 2024

Preprint

Self Cite

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show abstract

Section: Introductionmentioning

confidence: 99%

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Liu,

Xu,

et al. 2024

Int J Adv Manuf Technol

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Continuous contact transfer mode in bypass coupling triple-wire indirect arc welding (BCTW-GIA) is proposed to pursue an optional way to ensure the high deposition rate and obtain stable depositing process. The arc behaviors, droplet transfer and process stability with different distance between the tips (d1) of the main wire and side wires and the feeding speed of main wire (FSM) were studied. With the increase d1 and FSM, the droplet transfer mode of main wire varied from explosive transfer to short-circuit transfer to bridge transfer. When the d1 was greater than 4 mm, the continuous contact transfer bypass coupling triple-wire indirect arc welding can be realized and the welding process stability was improved. With the d1 adjusted from 0 mm to 6 mm, the standard deviation of the current dropped from 123.8 to 53.8 and its variation coefficient from 117.33% to 39.24% at FSM= 1 m/min. The weld penetration and weld width reduced with the FSM increasing, while the weld reinforcement gradually increased.

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“…In addition, Compared with TWIAW, the action of the spatially symmetrical magnetic field enhances the TW-GIA arc stiffness. Liu et al [19] explored the process parameter range of TW-GIA, and results showed allowable current can reach more than 480 A (twice of TWIAW). Due to the expansion of the process parameter range, TW-GIA can solve the sidewall non-fusion defect that appears in the thick plate welding process of TWIAW [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of metal transfer and weld forming characteristics in triple-wire gas indirect arc welding

Wang

Zhang

et al. 2022

Int J Adv Manuf Technol

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Triple-wire gas indirect arc welding (TW-GIA) has the advantages of low heat input and high deposition rate. However, the simultaneous melting of triple wires makes the metal transfer mode complicated. The unknown of the metal transfer mode restricts the development of this technology. In this paper, high-speed camera systems and electrical signal acquisition sensors were used to explore the TW-GIA metal transfer mode. The static force model and the arc conductive channel model were used to discuss the droplet force and energy conversion characteristics respectively. Results showed that the TW-GIA metal transfer modes can be divided into: short-circuit transfer (SCT), main wire projected transfer + side wire globular transfer (PGT), main wire streaming transfer + side wire projected transfer (SPT) and main wire streaming transfer + side wire streaming transfer (SST). Moreover, the process parameter ranges corresponding to the four modes were summarized. Due to the stable arc and the uniform metal transfer process, SPT and SST can form desirable weld seam. The gravity and z-axis components of electromagnetic force are the main forces that promote metal transfer.The x-axis and y-axis components of the electromagnetic force deviate the metal transfer path from the arc coverage. Due to the change of arc conductive channel, the energy transferred from TW-GIA to the base metal is less than that of GMAW, showing the advantages of small welding deformation, narrow heat affected zone and grain refinement. KeywordsTriple-wire gas indirect arc welding•metal transfer•energy conversion•arc conductive channel

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A triple-wire indirect arc welding method with high melting efficiency of base metal

Cited by 23 publications

References 16 publications

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Analysis of metal transfer and weld forming characteristics in triple-wire gas indirect arc welding

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