Prediction of Surface Temperature on Metal Beads Subjected to Argon-Hydrogen Transferred Arc Plasma Impingemen.

• Fudolig Agustin M.

  Research Student, Institute for Advanced Materials Processing, Tohoku University

• Nogami Hiroshi

  Institute for Advanced Materials Processing, Tohoku University

• Yagi Jun-ichiro

  Institute for Advanced Materials Processing, Tohoku University

• Mimura Kouji

  Institute for Advanced Materials Processing, Tohoku University

• ISSHIKI Minoru

  Institute for Advanced Materials Processing, Tohoku University

Abstract

Surface temperatures of metals subjected to transferred arc plasma impingement in 100 % argon and Ar-H2 (90 : 10 and 70 : 30 by volume) mixed gas arc plasmas are predicted based on a combined mathematical model of the arc plasma and the metal bead. The numerical simulation involves solution to conservation equations of mass, momentum, energy, and current continuity of the arc plasma and the target metals of Nb and Ta. An increase in hydrogen content of the introduced gas resulted to higher surface temperatures as well as an increase in the size of the molten pool. Predicted threshold arc current that causes an onset of melting is in good agreement with experiment.

Journal

• ISIJ International

  ISIJ International 37 (6), 623-629, 1997

  The Iron and Steel Institute of Japan

Keywords

• numerical simulation
• mixed-gas plasma
• metal refining
• surface temperature

Details

• CRID: 1390001206451673472
• NII Article ID: 10002456159
• NII Book ID: AA10680712
• DOI: 10.2355/isijinternational.37.623
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/37/6/37_6_623/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed