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Method exploration of flux bands constricting arc welding for high-strength steel T-joints

  • Lei Wang
  • Jisen QiaoEmail author
  • Zhenwen Chen
  • Liang Zhu
  • Jianhong Chen
ORIGINAL ARTICLE
  • 85 Downloads

Abstract

A new energy-efficient welding method, flux bands constricting arc (FBCA) welding, is proposed to solve the fabrication of metal sandwich panels. This method is suitable for welding T-joints in special structures where the welding gun is unable to reach the welding position, such as welding thick face-plate metal sandwich panels. The characteristics of FBCA welding, key welding technologies, and corresponding defects and resolutions are discussed. Pull-out tests between T-joints welded by laser and FBCA welding were conducted. Results indicate that complete penetration and good fusion of three-sided T-joint can be produced by FBCA welding. The typical cross section morphology is unlike other common welding methods. T-joints without defects, such as weld asymmetry, root leakage, slag inclusion, and pores, show better ultimate tensile strength than T-joints welded by laser welding. The FBCA welding method can compensate for shortage of insufficient weld width of laser welding.

Keywords

Constricting arc Ultra-narrow gap welding T-joints High-strength steel Sandwich panels 

Notes

Funding information

The authors received financial support for this research from the National Natural Science Foundation of China (Grant No. 51665033), Innovation and Enterprise Foundation of Gansu Provincial Sci. & Tech. Department (Grant No. 17CX2JA026), and Elite Student Study Abroad Foundation of Lanzhou University of Technology.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Lei Wang
    • 1
    • 2
  • Jisen Qiao
    • 1
    • 2
    Email author
  • Zhenwen Chen
    • 1
  • Liang Zhu
    • 1
    • 2
  • Jianhong Chen
    • 1
    • 2
  1. 1.Lanzhou University of TechnologyLanzhouChina
  2. 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous MetalsLanzhou University of TechnologyLanzhouChina

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