A novel sine wave modulation method of pulse current during double wire MIG welding

Cai, Hui; Xue, Jiaxiang; Heng, Gongchun

doi:10.1007/s00170-016-9637-6

Cited by 6 publications

(1 citation statement)

References 10 publications

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“…The DP-GMAW experiments were carried out by a self-developed power system named Pulse NBC220 (Guiyang, China). Pulse NBC220 had an Al–Mg–Si alloy welding database with the current range of 50–220 A, and its welding current waveforms included P-GMAW, DP-GMAW and SP-GMAW [ 27 ]. After the current and voltage signals were processed by the wavelet analyzer (developed by the research group, Guiyang, China), concise spectrum results and statistical analysis results were obtained by the monitoring and control system (developed by the research group, Guiyang, China), so that the stability of the DP-GMAW process could be evaluated and analyzed [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys

et al. 2022

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In this paper, a double pulse gas metal arc welding (DP-GMAW) for an AA6061-T6 aluminum alloy based on fewer basic welding parameters than the traditional DP-GMAW is proposed. This study compared the difference in pulse base currents (ΔIb) and the difference in the pulse peak currents (ΔIp) by analyzing the electrical signal and morphology properties of welded samples. The results indicated that changing ΔIp caused welding defects or even welding failure easily. The welding stability after changing ΔIb was much better than that after changing ΔIp. The individual fish-scale width of the weld joint remained unchanged when ΔIb was at different values. In addition, the average absorbed work, tensile strength, yield strength and elongation of the weld joints obtained by different ΔIb values reached 31.1%, 60.2%, 52.9% and 37.9% of the base metal, respectively.

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Section: Methodsmentioning

confidence: 99%