Effects of a constricted nozzle on the arc phenomena in TIG welding process

Konishi Kyohei, Shigeta Masaya, Tanaka Manabu, Murata Akihisa, Murata Tadasuke

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Effects of a constricted nozzle on the arc phenomena in Tungsten Inert Gas (TIG) welding process are investigated by numerical simulation. The obtained results show that the temperature and velocity of the arc plasma are increased by attaching an additional gas nozzle which is called "constricted nozzle". As a result, the iron vapor does not diffused upward but transported outward. In addition, the heat transfer to the base metal surface is enhanced.

Original languageEnglish
Pages (from-to)47-51
Number of pages5
JournalYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
Volume32
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • A constricted nozzle
  • Numerical simulation
  • The arc phenomena
  • The arc plasma
  • TIG welding process

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Metals and Alloys

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