Research of a Multi-Frequency Waveform Control Method on Double-Wire MIG Arc Welding

Yao, Ping; Zhou, Kang

doi:10.3390/app7020171

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…In addition, it can be seen that the work [49] has some similar points to the work [39], both of the two works introduced high-frequency modulation to the original current waveform. Actually, the trailing current in the Figure.…”

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 88%

“…The schematic of this method can be shown in Figure .5 (a) [48]. While in the latter work [49], SFIP was used, a multi-frequency modulation was added to the waveform in the peak stage of trailing wire current, under the situation that the two wires current waveforms had the same frequencies but inverse phases. This adjustment can decrease the duration when both leading wire current and trailing wire current were in the base stage; meanwhile, the duration may be more dispersive by means of high frequency modulation.…”

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 99%

“…5 (b) can also be considered as a form of double pulse. However, the work [39] had more complex structure than that of the work [49]. We suggested that to achieve control actions with high performance, low complexity was also an important element, however, to deal with the system with different actual operational environment and condition, more appropriate system design and configuration should also be seriously considered during the applications.…”

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 99%

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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: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 88%

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 99%

Section: Improvement Of Process Control Of the Double-wire Gmaw Processmentioning

confidence: 99%

See 1 more Smart Citation

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

Zhou

Yao

2019

IEEE Access

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“…Figure 8 shows the transient welding current waveform and corresponding possibility density function (PDF) results of welding current of L3. The PDF of the welding current, together with the transient welding current, were commonly employed methods to evaluate the stability of welding process [28,29]. As shown in Figure 8a, the larger values of welding current appeared in 37.7-37.8 s and 38-38.5 s; the values were above 350 A; this was because the welding currents were unstable, which can induce the metal transfer non-uniform, and short-circuits occurred so that the transient welding currents sharply increased.…”

Section: Stability Analysis Of the Electrical Signalmentioning

confidence: 99%

Process and Parameter Optimization of the Double-Pulsed GMAW Process

Yao

Zhou

Huang

2019

Metals

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The double pulsed gas metal arc welding (DP-GMAW) process has been effectively employed to realize joining of steel plates and obtain weld bead surfaces with high quality fish scale ripples. In this work, a DP-GMAW process based on robot operation using the latest twinpulse XT DP control technology was employed to join the stainless-steel base plates. Four key operational parameters, which were robot welding speed, twin pulse frequency, twin pulse relation and twin pulse current change in percent, were selected to be input elements of orthogonal experimental design, which included nine experiments with three levels. To accurately understand the performance and process of weld bead obtained from DP-GMAW operation based on robot operation, the appearance observation and key shape parameters measurement, microstructure analysis, tensile and hardness testing, as well as stability analysis of the electrical signals, were conducted. Correlation analysis showed that the grain size was significantly correlative to the toughness and hardness. Then, to obtain quantitative evaluation results, fuzzy comprehensive evaluation (FCE) was employed to provide quality evaluation of weld beads from the above experiments. The influential levels of the key operational parameters on the appearance, grain size and FCE scores, and corresponding physical analyses, were respectively presented. In addition, optimal parameters combinations for obtaining weld beads with optimal appearance, grain size, and the highest FCE scores of weld bead quality were respectively provided according to the range analysis of the results from orthogonal experimental design. This work can provide an effective analysis method of influential levels of key operational parameters on the performance of the weld bead, optimal operational parameters combination seeking method, and quantitative quality evaluation method for the DP-GMAW process, which can improve the process optimization and increase the production efficiency, both in academic research and actual industrial production.

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Effect of phase on the behavior of metal transfer in double-wire pulsed GMAW

Yin

Ding

et al. 2018

Int J Adv Manuf Technol

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Research of a Multi-Frequency Waveform Control Method on Double-Wire MIG Arc Welding

Cited by 8 publications

References 12 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

Process and Parameter Optimization of the Double-Pulsed GMAW Process

Effect of phase on the behavior of metal transfer in double-wire pulsed GMAW

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