Visualization of gas metal arc welding on globular to spray transition current

T. Methong, M. Shigeta, M. Tanaka, R. Ikeda, M. Matsushita, B. Poopat

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The transfer modes in gas metal arc welding have important effects on welding quality. However, present study of metal transfer modes is not yet fully understood. In this study, welding arcs was visualised using the optical emission spectroscopy technique. The carbon steel wire electrode was used for welding with 80% Ar + 20% CO2 shielding gas. The results showed that the globular to spray transition current was 330–350 A. During globular to spray transition, argon,CO2 and Fe plasma tended to gradually change from localising near the arc axis to a two-layer structure having 11,000 K in high-temperature region away from the arc axis and around 7000 K in low-temperature region near the arc axis.

Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalScience and Technology of Welding and Joining
Volume23
Issue number1
DOIs
Publication statusPublished - 2018 Jan 2
Externally publishedYes

Keywords

  • Fe vapour
  • GMAW
  • metal transfer
  • optical emission spectroscopy
  • plasma temperature
  • Transition current

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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