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 (2011). Time Dependent Modeling of Droplet Detachment in GMAW Including Metal Vapor Diffusion. IEEE TRANSACTIONS ON PLASMA SCIENCE, 39(11), 2896-2897 [10.1109/TPS.2011.2149544].
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
