| 摘要 |
PCT No. PCT/SU86/00015 Sec. 371 Date Oct. 19, 1987 Sec. 102(e) Date Oct. 19, 1987 PCT Filed Feb. 20, 1986 PCT Pub. No. WO87/04956 PCT Pub. Date Aug. 27, 1987.A method of elctric-arc welding includes the steps of feeding of a main metal-arc electrode (4) into a welding zone (1), the electrode being composed of at least one filler wire, and an additional metal-arc electrode (5) made up of at least one filler wire (6, 7, 8) and being under the same potential as the main metal-arc electrode (4). Control of the welding current, size and shape of the weld seam is carried out by virtue of a total cross-sectional area of the additional metal-arc electrode (5). Then the crater at the end of a weld seam (13) is filled up by consecutively disengaging the feed traverse of the filler wires of the main and additional metal-arc electrodes (4, 5).
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