Bead formation during wire and arc additive manufacturing

  • 1 Institute of Metal Science, Equipment, and Technologies with Center for Hydro- and Aerodynamics “Acad. A. Balevski” at the Bulgarian Academy of Sciences – (IMSETHC-BAS), Bulgaria


An experimental study of the formation of beads during the Wire and Arc Additive was carried out. The experiments were carried out in the low energy range of the welding arc. The influence of the wire feeding rate and traverse speed, their ratio and the heat input on the width and height of the resulting layers was monitored. Correlation coefficients were calculated between the linear energy and the ratio of the feed rate to the traverse speed on the one hand and the geometric dimensions of the layers on the other. It is shown that, in the studied range of technological parameters, the heat input is more strongly related to the geometric dimensions than the ratio of the velocities of wire feeding and deposition.



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