METHOD OF MULTI-ELECTRODE ARC WELDING WITH FLUX, WELDED CONNECTION AND METHOD OF OBTAINING WELDED CONNECTION Russian patent published in 2018 - IPC B23K9/18 B23K9/95 

FIELD: technological processes.

SUBSTANCE: invention relates to multi-electrode submerged arc welding method using a plurality of electrodes. For each electrode from the second to the n-th, with the exception of first electrode, which is the front electrode in the welding direction, where n is an integer equal to 2 or more, use a welding current source capable of adjusting the waveform of the welding current. During welding process, specified ratios between maximum value of electromagnetic force F_i are provided, acting on the arc column at the end of the wire of i-th electrode during welding, N/m and F_iave – average value of electromagnetic force F_i, N/m, and σ_Fi – standard deviation of electromagnetic force F_i, N/m.

EFFECT: method for producing welded joint of steel sheets and welded joint has been proposed.

5 cl, 4 dwg, 4 tbl