Abstract: “The paper addresses a comparative analysis between theoretical and experimental results of the deposition rates, achieved by Submerged Arc Welding, when single and multiple wires technologies are applied. Two welding variants have been investigated in the research program, one power source welding on the one hand and two power sources welding (Tandem technique) on the other hand. Classical welding current power sources - i.e. standard DC and rectangular waveform AC - and also the most recent inverter power source, which allows waveform modulating, were selected and used in the experimental program. Comparing the deposition rates achieved in the case of using two conventional power sources systems (Tandem Single + Single wire welding) with values achieved in the case of multiple-wire welding technique (even if a traditional welding system with only one single power source is used), a higher productivity of the welding process has been noticed when multiple-wire technology is applied. Fi”

Keywords: submerged arc welding, Tandem, Twin, ICETM, multiple-wire welding technique, deposition rate