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 / M. Boselli; V. Colombo; E. Ghedini; P. Sanibondi. - In: IEEE TRANSACTIONS ON PLASMA SCIENCE. - ISSN 0093-3813. - STAMPA. - 39:11(2011), pp. 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.
