The Influence of the Welding Current Polarity on the Geometric Configuration of the Bead
Various types of shielding gases mixes are used for the industrial GMAW applications. The use of the direct current welding process with reverse or direct polarity influences the geometric characteristics of the beads as well as process dilution. In certain situations, such as weld deposits, the penetration should be as shallow as possible and the heat affected zone of the bead should be reduced. The paper presents the experimental procedure, the obtained results and the conclusions concerning the influence of polarity on the shape and geometry of the welding beam, while using various shielding gases and various welding parameters and by changing polarities.
C. Rontescu et al., "The Influence of the Welding Current Polarity on the Geometric Configuration of the Bead", Advanced Materials Research, Vol. 1088, pp. 797-801, 2015