Prediction of surface temperature on metal beads subjected to argon-hydrogen transferred arc plasma impingement

Agustin M. Fudolig; Hiroshi Nogami; Jun Ichiro Yagi; Koji Mimura; Minoru Isshiki

doi:10.2355/isijinternational.37.623

Prediction of surface temperature on metal beads subjected to argon-hydrogen transferred arc plasma impingement

Agustin M. Fudolig, Hiroshi Nogami, Jun Ichiro Yagi, Koji Mimura, Minoru Isshiki

Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

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.

Original language	English
Pages (from-to)	623-629
Number of pages	7
Journal	Isij International
Volume	37
Issue number	6
DOIs	https://doi.org/10.2355/isijinternational.37.623
Publication status	Published - 1997

Keywords

Metal refining
Mixed-gas plasma
Numerical simulation
Surface temperature

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.37.623

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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.",

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T1 - Prediction of surface temperature on metal beads subjected to argon-hydrogen transferred arc plasma impingement

AU - Fudolig, Agustin M.

AU - Nogami, Hiroshi

AU - Yagi, Jun Ichiro

AU - Mimura, Koji

AU - Isshiki, Minoru

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

KW - Metal refining

KW - Mixed-gas plasma

KW - Numerical simulation

KW - Surface temperature

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Prediction of surface temperature on metal beads subjected to argon-hydrogen transferred arc plasma impingement

Abstract

Keywords

ASJC Scopus subject areas

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