As a multi-electrode submerged arc welding method using a plurality of electrodes, as a welding power source, for the second to nth electrodes (n: an integer of 2 or more), excluding the first electrode which is the first electrode in the welding proceeding direction, While using a welding power source capable of controlling the waveform of the welding current, the maximum value of the electromagnetic force (F i ) acting on the arc column of the wire tip of the i-th electrode during welding is F imax (N / m), and the electromagnetic force (F the average value of i) F iave (N / m ), when the standard deviation of the electromagnetic force (F i) by σ Fi (N / m), an expression that F imax, F iave and σ Fi (1) and ( Welding is performed to satisfy the relationship of 2).
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机译：作为使用多个电极作为焊接电源的多电极埋弧焊方法，除了作为焊接中的第一电极的第一电极以外，第二至第n电极（n：2以上的整数）在使用能够控制焊接电流波形的焊接电源的同时，作用在i-型焊丝尖端弧柱上的电磁力的最大值（F i ）焊接时的第n个电极为F imax （N / m），电磁力（F为 i的平均值）F iave（N / m ）为标准电磁力（F i）偏离σ Fi （N / m），即F imax， F iave 和σ Fi （1）和（进行焊接以满足2的关系）。
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