The influence of the electrical arc characteristics on forming of the weld

Abstract

Stability and controllability of a welding arc have a large influence on both the weld quality and welding productivity in the process of welding. Metal fusing and weld forming depend on the forces affecting the arc. Welding current creates electromagnetic forces, which basically define the influence of arc forces on molten metal. While estimating the magnitude of the influence of electromagnetic forces, it is necessary to investigate tha radial distribution of arc pressure on the surface of a weld pool and take account the dependence of distribution of electromagnetic forces on the non-consumable electrode tip geometry.