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Zhang Aihua, Ma Lihong, Liu Qiang, Ma Yongqiang, Zhu Liang. Effect of external characteristics of power source on arc stability in ultra-narrow gap welding[J]. WELDING & JOINING, 2020, (3): 1-4. DOI: 10.12073/i.hi.20200114001
Citation: Zhang Aihua, Ma Lihong, Liu Qiang, Ma Yongqiang, Zhu Liang. Effect of external characteristics of power source on arc stability in ultra-narrow gap welding[J]. WELDING & JOINING, 2020, (3): 1-4. DOI: 10.12073/i.hi.20200114001
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Effect of external characteristics of power source on arc stability in ultra-narrow gap welding

  • 1. Lanzhou University of Technology, Lanzhou 730050, China;

  • 2. Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou 730050, China;

  • 3. National Demonstration Center for Experimental and Control Engineering Education, Lanzhou 730050, China;

  • 4. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou 730050, China

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  • Received Date: January 13, 2020
    Graphical Abstract
    • Abstract
  • In ultra-narrow gap welding, high quality welded joint could be obtained by setting matching process parameters according to its groove width, but the arc instability occasionally occurred. This phenomenon was mainly due to the influence of random interference factors on groove width, such as the flatness of groove sidewall. Under conditions of fixed and variable groove width, the influence of external characteristics of power source on the arc stability was studied and the welding results were analyzed. The results showed that the matching descent characteristics could enhance the arc stability when the groove was slightly deformed.
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    • References (10)
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