Title: A simplified 2-D model for the linear GTA welding of stainless steel plates

Authors: P. Maran, T. Sornakumar, T. Sundararajan

Addresses: Department of Mechanical Engineering, Thiagarajar College of Engineering, Madurai 625015, India. ' Department of Mechanical Engineering, Thiagarajar College of Engineering, Madurai 625015, India. ' Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India

Abstract: A simplified heat and fluid flow model has been used to solve the Gas Tungsten Arc (GTA) linear welding problem for austenitic stainless steel. In this study, an equivalent 2-D (two-dimensional) transient heat and fluid flow model has been used to study the effect of controlled boundary conditions with free bottom surface and with bottom insulation. The governing equations have been solved by a finite volume method. The peak temperature, maximum velocity in the weld pool, weld bead width and depth get reduced when the bottom surface of the stainless steel plate is insulated.

Keywords: finite volume method; temperature; velocity; austenitic stainless steel; weld bead; GTA welding; gas tungsten arc welding; fluid flow; stainless steel plates; modelling; heat transfer.

DOI: 10.1504/IJMPT.2010.032103

International Journal of Materials and Product Technology, 2010 Vol.38 No.2/3, pp.248 - 263

Published online: 10 Mar 2010 *

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