The most advanced models for gas-metal arc welding (GMAW) take into account either the time-dependent droplet formation using volume-of-fluid models or the diffusion of metal vapors evaporating from a fixed wire under steady-state conditions. In this paper, both aspects have been included in an axisymmetric 2-D time-dependent model for a GMAW torch operating in globular transfer mode in an Ar atmosphere at 160 A dc current. Numerical results have been compared with experimental high-speed-camera images.

Time Dependent Modeling of Droplet Detachment in GMAW Including Metal Vapor Diffusion

BOSELLI, MARCO;COLOMBO, VITTORIO;GHEDINI, EMANUELE;SANIBONDI, PAOLO
2011

Abstract

The most advanced models for gas-metal arc welding (GMAW) take into account either the time-dependent droplet formation using volume-of-fluid models or the diffusion of metal vapors evaporating from a fixed wire under steady-state conditions. In this paper, both aspects have been included in an axisymmetric 2-D time-dependent model for a GMAW torch operating in globular transfer mode in an Ar atmosphere at 160 A dc current. Numerical results have been compared with experimental high-speed-camera images.
M. Boselli; V. Colombo; E. Ghedini; P. Sanibondi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/105804
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