CIRCUMFERENTIAL JOINT WELDING METHOD

PURPOSE:To increase the quantity of a deposited metal, and to increase a welding speed, by using a welding wire together with a plate-like consumable electrode, when welding a circumferential joint by the electroslag method. CONSTITUTION:In a welded joint part constituted of an outside cover plate 1 and an inside cover plate 2 in case of welding a circumferential joint by the electroslag method, a wire 5 from a wire reel 9 is drawn out by a roller 6, is supplied through a consumable plate electrode wire guide tube 8, goes into a molten slag 3, is electrified and melted, and becomes a deposited metal 4. A plate part 7 of a consumable plate electrode is fitted into the joint groove part in advance, on the other hand, it is fitted so that the wire 5 is put into the wire guide tube 8 of the consumable plate electrode, is rotated by following a rotary positioner 11, and the consumable plate electrode 7 is melted together with the wire in a molten slag 3. Accordingly, the quantity of the deposited metal 4 is increased remarkably and the welding speed is increased.