| 摘要 |
PROBLEM TO BE SOLVED: To carry out submerged arc welding for a single bevel groove and a single V groove with a single electrode arrangement and a single electrode angle. SOLUTION: In the submerged arc welding in which preceding, intermediate, succeeding electrodes 3, 4, 5 are used, a single bevel groove 1 and a single V groove coexist in a work. Only the preceding electrode 3 is inclined for the vertical side groove face 1a of the single bevel groove 1 at 2-10 deg. in the groove width direction. A single bevel groove and a single V groove are welded with a single electrode arrangement and a single electrode angle.
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