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Electromagnetically and thermally driven flow phenomena in electroslag welding

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Abstract

Through the statement of Maxwell's equations, the turbulent Navier-Stokes equations, and the convective heat balance equation, a mathematical model has been proposed for the Electroslag Welding Process. In the formulation, allowance has been made for both electromagnetic and buoyancy forces for driving the slag and the metal flow. The principal finding of the work is that convection in the molten slag region has a marked effect on the heat transfer process. For a rectangular geometry, using plate electrodes, the flow field is driven by buoyancy forces, the circulating flow is less intense, and the thermal efficiency of the process is improved. In contrast, for wire electrodes (approximated by a cylindrical geometry) the flow is driven by electromagnetic forces and a substantial part of the thermal energy is dissipated to the plates.

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Authors and Affiliations

  1. Institute of Chemi- cal Engineering and Technology, Punjab University, Lahore-1, Pakistan

    J. Szekely (Professor)

  2. Department of Materials Science and Engineering, Massachusetts Institute of Technology, 02139, Cambridge, MA

    T. W. Eagar (Assistant Professor of Materials Engineering)

Authors
  1. A. H. Dilawari
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  2. J. Szekely
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  3. T. W. Eagar
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Additional information

A. H. DILAWARI formerly Visiting Engineer at the Massachusetts Institute of Technology.

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Dilawari, A.H., Szekely, J. & Eagar, T.W. Electromagnetically and thermally driven flow phenomena in electroslag welding. Metall Trans B 9, 371–381 (1978). https://doi.org/10.1007/BF02654410

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  • DOI: https://doi.org/10.1007/BF02654410

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