TIG welding process with dynamic feeding: a characterization approach

  • Régis Henrique Gonçalves e Silva
  • Luiz Eduardo dos Santos Paes
  • Marcelo Pompermaier Okuyama
  • Gustavo Luis de Sousa
  • Alberto Bonamigo Viviani
  • Luciano Machado Cirino
  • Mateus Barancelli Schwedersky
ORIGINAL ARTICLE

Abstract

Wire forward and backward oscillation in automatic feeding tungsten inert gas (TIG) process have been pointed as a simple technique to achieve high productivity levels and process stability for a wider operation range, compared to the conventional version. However, in this case, physical aspects related to the involved phenomena are still not fully understood. Based on that, the present paper addresses a characterization analysis of low frequency dynamic wire feeding process, in order to yield some contribution to the knowledge gain of these phenomena. Both conventional automatic feeding and autogenous process were taken as a reference. The study covers system description as well as metal transfer modes, welding pool temperature gradient, and respective weld geometry. Bead on plate welding was performed and monitored with high-speed and thermographic cameras. Dynamic oscillation showed good stability and proved to be more flexible among other versions, as feeding speed and power do not need to be correlated. In order to enable proper wire dynamic movement monitoring, a special motion measuring system was developed.

Keywords

GTAW Wire oscillation Physical aspects Automatic feeding Weld pool manipulation 

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Notes

Acknowledgements

The authors thank the Welding and Mechantronics Institute (LABSOLDA) staff for the technical support.

Funding information

This study was financially supported by CNPq.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • Régis Henrique Gonçalves e Silva
    • 1
  • Luiz Eduardo dos Santos Paes
    • 1
  • Marcelo Pompermaier Okuyama
    • 1
  • Gustavo Luis de Sousa
    • 1
  • Alberto Bonamigo Viviani
    • 1
  • Luciano Machado Cirino
    • 2
  • Mateus Barancelli Schwedersky
    • 1
  1. 1.Department of Mechanical Engineering, Welding LaboratoryFederal University of Santa CatarinaFlorianópolisBrazil
  2. 2.Department of Mechanical EngineeringFederal Institute of Rio Grande do Sul–Campus IbirubáIbirubáBrazil

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