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High Efficiency and Quality of Multi-Pass Tandem Gas Metal Arc Welding for Thick Al 5083 Alloy Plates

  • Zhao Jiang (姜 朝)
  • Xueming Hua (华学明)
  • Lijin Huang (黄立进)
  • Dongsheng Wu (吴东升)
  • Fang Li (李 芳)
  • Yan Cai (蔡 艳)
Article
  • 12 Downloads

Abstract

Multi-pass tandem gas metal arc welding (TGMAW) is carried out for Al 5083 alloy plates with 30 mm thickness. The welding process is evaluated by high-speed photographs and electrical signals. The deposition rate and welding time are calculated to characterize the welding efficiency. The bead formation, porosity, microstructure and mechanical properties are tested and analyzed. The results indicate that though arc deflection occurs due to the electromagnetic interference between two arcs during TGMAW process, it does not affect the welding process stability significantly. The deposition rate and welding time of TGMAW process are about 15 g/min larger and about 16.7% less than those of gas metal arc welding (GMAW) process respectively, accompanied by the reduction of heat input. The TGMAW welded joint has less porosity and more refined microstructure to contribute to the improvement of mechanical properties (micro-hardness, tensile strength and ductility). It can be concluded that TGMAW process yields excellent performance of welded joint with improved welding efficiency, which makes it extremely practical during welding of thick plates.

Key words

multi-pass welding tandem gas metal arc welding (TGMAW) welding efficiency porosity microstructure mechanical property 

CLC number

TG 44 

Document code

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Copyright information

© Shanghai Jiaotong University and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Zhao Jiang (姜 朝)
    • 1
    • 2
  • Xueming Hua (华学明)
    • 1
    • 2
  • Lijin Huang (黄立进)
    • 1
    • 2
  • Dongsheng Wu (吴东升)
    • 1
    • 2
  • Fang Li (李 芳)
    • 1
    • 2
  • Yan Cai (蔡 艳)
    • 1
    • 2
  1. 1.Shanghai Key Laboratory of Materials Laser Processing and ModificationShanghaiChina
  2. 2.China Collaborative Innovation Center for Advanced Ship and Deep-Sea ExplorationShanghai Jiao Tong UniversityShanghaiChina

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