Metallurgical and Materials Transactions B

, Volume 23, Issue 3, pp 357–369 | Cite as

On the calculation of the free surface temperature of gas-tungsten-arc weld pools from first principles: Part I. modeling the welding arc

  • R. T. C. Choo
  • J. Szekely
  • R. C. Westhoff
Welding and Joining
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Abstract

A mathematical formulation has been developed and computed results are presented describing the temperature profiles in gas tungsten arc welding (GTAW) arcs and, hence, the net heat flux from the welding arc to the weld pool. The formulation consists of the statement of Maxwell's equations, coupled to the Navier-Stokes equations and the differential thermal energy balance equation. The theoretical predictions for the heat flux to the workpiece are in good agreement with experimental measurements — for long arcs. The results of this work provide a fundamental basis for predicting the behavior of arc welding systems from first principles.

Keywords

Welding Metallurgical Transaction Weld Pool Radial Position Anode Surface 
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Copyright information

© The Minerals, Metals & Material Society 1992

Authors and Affiliations

  • R. T. C. Choo
    • 1
  • J. Szekely
    • 2
  • R. C. Westhoff
    • 2
  1. 1.Department of Metallurgy and Materials ScienceUniversity of TorontoTorontoCanada
  2. 2.Department of Materials Science and EngineeringMassachusetts Institute of TechnologyCambridge

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