Metal transfer process and properties of double-wire double pulsed gas metal arc welding

Wu, Kaiyuan; Cao, Xuanwei; Yin, Tao; Zeng, Min; Liang, Zhuoyong

doi:10.1016/j.jmapro.2019.06.019

Cited by 30 publications

(6 citation statements)

References 23 publications

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“…In the aspect of microstructure, in the alternating phase, the columnar grains were discontinuous, and the directions of ferrites were more chaotic. Approximate conclusions can also be drawn in their other recent paper [26], which focused on the double-wire double-pulsed GMAW process. The work considered the double pulse synchronous (DPS) and double pulse alternating (DPA) phases, and the leading and trailing power sources used the tandem mode.…”

Section: B Tandem Gmaw Processmentioning

confidence: 60%

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Zhou

Yao

2019

IEEE Access

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Recently, double-wire gas metal arc welding (GMAW) process is more and more prevalently employed in industrial applications and attracted many academic researches. This paper reviewed the recent trends of researches and applications of this process. Three main aspects were included in this paper. The first was the operational process analysis of the process, and the reviewing work was divided into two catalogues: twin-wire GMAW process and tandem GMAW process, which were two main energy delivery and control formations of the process. This part focused on some negative phenomena, such as arc interruption, during the welding process and their effects on the products quality and process stability. Some works about using different current waveforms combinations and their effects on the welding process were discussed. Also, the works of numerical simulation for this process were mentioned in this part. The second part was about process stability monitoring, and corresponding works focused on establishing quantitative process stability estimation model. The last was the improvement of process control method, and the works mainly focused on the adjustment and modulation of the current waveforms, in order to eliminate negative phenomena, improve the process stability and obtain the products with high quality. Finally, some suggestions about future works were presented. This paper can provide references and enlightens for current academic researches or actual industrial applications in the double-wire GMAW process relative areas.INDEX TERMS Double-wire GMAW process, arc interruption, process stability, current waveform.

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Section: B Tandem Gmaw Processmentioning

confidence: 60%

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Zhou

Yao

2019

IEEE Access

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“…Then P. Ghosh et.al [10] provides a physical realisation with basic understanding of the effects of hypothetical factor at various pulse parameters including the arc voltage on the characteristics of arc and behaviour of metal transfer in P-GMAW process. In addition, Wu et al [11] conducted a high-power double-wire gas metal arc welding (GMAW) experiments with the single and double pulses technology to investigate the effects of single and double pulses on the metal transfer process and properties of the improved welding method.…”

Section: Introductionmentioning

confidence: 99%

Influences of weaving parameters on dynamic characteristics and stability control of the droplet transfer in arc-weaving P-GMAW process

Chen²,

Chen

et al. 2022

Int J Adv Manuf Technol

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The dynamic characteristics of droplet transfer is extremely complicated with the combined effects of gravity force and weaving motion during the weaving vertical-up welding on thick plate. In this paper, we firstly observed the droplet transfer behavior under various weaving parameters with high-speed photography and electrical signals during pulsed gas metal arc welding (P-GMAW). Then we investigated the influences of different weaving parameters on the arc shape and molten pool as well as droplet characteristics. By establishing a novel weaving-force model based on static-force balance theory (SFBT), we further revealed the drop transfer mechanism in weaving P-GMAW process. Extensive experimental results demonstrated that the suitable weaving parameters could effectively improve the droplet transfer stability and suppress welding defects including incomplete root penetration and lack of sidewall fusion. The findings of this paper will provide a basis for enhancing the welding process stability and obtaining a high-quality weld joint.

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“…According to droplet shape, the latter can be divided into globular transfer, projected transfer, streaming transition, etc [21][22][23]. Wu et al [24] demonstrated different metal transfer modes in DP-GMAW can influence weld appearance and penetration. Ikram et al [25] explored the force and temperature characteristics of VP-GMAW droplets through numerical simulations, and proved that finger penetration is caused by the falling droplets transferring momentum to the bottom of the molten pool.…”

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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Metal transfer process and properties of double-wire double pulsed gas metal arc welding

Cited by 30 publications

References 23 publications

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Influences of weaving parameters on dynamic characteristics and stability control of the droplet transfer in arc-weaving P-GMAW process

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

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