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Impacts of external longitudinal magnetic field on arc plasma and droplet during short-circuit GMAW

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Abstract

In gas metal arc welding, electromagnetic force, plasma stream force, gravity, and surface tension are the most important factors that affect metal transfer and spatter generation rate. In this paper, different kinds of external electromagnetic fields were introduced to gas metal arc welding (GMAW). The photos of arc plasma and droplet and electric signals covering welding current and arc voltage were acquired synchronously by an analysis and evaluation system based on LabView for GMAW. It was confirmed that the metal transfer frequency was improved, and spatter generation rate was diminished under controls of external electromagnetic fields. The influencing rules of external electromagnetic fields on electromagnetic force, the gravity, the plasma stream force, and surface tension were studied by three physical models, and the mechanism of external electromagnetic fields was revealed. This paper is for the purpose of discussing these factors and will make a profit for the application of electromagnetic coupling control to short-circuit GMAW.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, People’s Republic of China, 110870

    Yun Long Chang, Xiao Long Liu, Lin Lu & Feng Gao

  2. Metallurgical Institute, Lipetsk State Technical University, Lipetsk, Russia, 398024

    A. S. Babkin

  3. School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang, Gyeonggi-do, 412-791, Republic of Korea

    Bo Young Lee

Authors
  1. Yun Long Chang
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  2. Xiao Long Liu
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  3. Lin Lu
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  4. A. S. Babkin
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  5. Bo Young Lee
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  6. Feng Gao
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Correspondence to Yun Long Chang.

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Chang, Y.L., Liu, X.L., Lu, L. et al. Impacts of external longitudinal magnetic field on arc plasma and droplet during short-circuit GMAW. Int J Adv Manuf Technol 70, 1543–1553 (2014). https://doi.org/10.1007/s00170-013-5403-1

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  • DOI: https://doi.org/10.1007/s00170-013-5403-1

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