On the calculation of the free surface temperature of gas-tungsten-arc weld pools from first principles; Part 1. Modeling the welding arc

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · Metallurgical Transactions, B (Process Metallurgy); (United States)

DOI:https://doi.org/10.1007/BF02656291· OSTI ID:7275689

Choo, R T.C. ^[1]; Szekely, J; Westhoff, R C ^[2]

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1. Toronto Univ., ON (Canada). Dept. of Metallurgy and Materials Science
2. Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Materials Science and Engineering

In this paper a mathematical formulation is 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.

• OSTI ID: 7275689
• Journal Information: Metallurgical Transactions, B (Process Metallurgy); (United States), Journal Name: Metallurgical Transactions, B (Process Metallurgy); (United States) Vol. 23B; ISSN 0360-2141; ISSN MTTBC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ARC WELDING
COMPUTER CALCULATIONS
DIFFERENTIAL EQUATIONS
ENERGY BALANCE
EQUATIONS
FABRICATION
GAS METAL-ARC WELDING
GAS TUNGSTEN-ARC WELDING
HEAT FLUX
JOINING
MATHEMATICAL MODELS
MAXWELL EQUATIONS
NAVIER-STOKES EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
THERMODYNAMICS
WELDING