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XUE Jiaxiang, LIN Fanglue, JIN Li, HU Yu. Influence of pulse current waveform on mechanical properties of Tandem double wire MIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(12): 6-10. DOI: 10.12073/j.hjxb.2019400305
Citation: XUE Jiaxiang, LIN Fanglue, JIN Li, HU Yu. Influence of pulse current waveform on mechanical properties of Tandem double wire MIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(12): 6-10. DOI: 10.12073/j.hjxb.2019400305

Influence of pulse current waveform on mechanical properties of Tandem double wire MIG welding

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  • Received Date: July 06, 2019
  • As an efficient welding method for stainless steel, double wire pulse MIG welding is one of the hot spots in welding industry. However, how to select and adjust the current waveform parameters of double wire MIG welding is still a difficulty. In order to optimize the welding method of stainless steel and improve the welding efficiency, duplex stainless steel was used as the welding workpiece. The welding quality of duplex stainless steel was studied by comparing the parameters of current waveform through the research on the double wire trapezoidal wave double pulse welding, double wire rectangular wave double pulse welding and double wire single pulse welding. The results showed that under the condition of the same line energy, the double-wire trapezoidal wave double pulse welding had better stability than the double-wire rectangular wave double-pulse welding and the double-wire single-pulse welding, and the welding quality of the former was higher, and it could be seen more fish scales, while significantly increasing the tensile strength, hardness and toughness of stainless steel joints.
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