Three-Dimensional Numerical Study on the Metal Rotating Spray Transfer Process of High-Current GMAW

Abstract A three-dimensional numerical model based on the volume-of-fluid (VOF) method is typically preferred for studying high-current gas metal arc welding (GMAW) transfer mechanism and then controlling it. It informed that rotating spray extremely complicated, some researchers have focused simplified models without considering energy conservation to make analysis manageable unstable process. Using our created model, of GMAW with shielding different conductivities has been studied by analyzing acting forces fluid flows in liquid column, especially contributions self-induced electromagnetic force, equivalent volume force capillary pressure surface tension (Named this work), static pressure. found unbalanced greatly promotes motion 500 inert (MIG) pure argon it pushes column rotate. Considering constricting effect active simply changing conductivity, no longer rotates, turns swing since large enough break motion. The calculated results deflected angle rotating/swing frequency agree well experiment high-speed camera observations.