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Appl. Sci. 2017, 7(2), 171; doi:10.3390/app7020171

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

College of Electromechanical Engineering, Guangdong Polytechnic Normal University, Guangzhou 510635, China
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Author to whom correspondence should be addressed.
Received: 23 October 2016 / Revised: 2 February 2017 / Accepted: 6 February 2017 / Published: 10 February 2017
(This article belongs to the Special Issue Gas Metal Arc Welding)
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To improve the energy efficiency and quality of the welding seam during the double-wire metal inert-gas (MIG) arc welding production, a new multi-frequency waveform control method was proposed in this paper. In this method, 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 new action can benefit the stability of welding process and improve the quality of welding seam. Actual experiments were conducted to validate the proposed method. Orthogonal experiments and corresponding mathematical analyses were also employed to seek an optimal parameters combination. Finally, an optimal combination was confirmed and a welding seam with satisfactory quality was obtained, which showed that the proposed control method and corresponding analyses can well serve the double-wire MIG arc welding, and then benefit the actual production in the future. View Full-Text
Keywords: double-wire MIG arc welding; multi-frequency modulation; current waveform control; orthogonal experiment double-wire MIG arc welding; multi-frequency modulation; current waveform control; orthogonal experiment

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yao, P.; Zhou, K. Research of a Multi-Frequency Waveform Control Method on Double-Wire MIG Arc Welding. Appl. Sci. 2017, 7, 171.

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