| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method using a right and left difference of two electrodes which can adjust input heat quantity with an external heat source different from welding and can prevent a welded member from falling down by controlling a penetration depth.SOLUTION: In the two electrode welding method for simultaneously performing fillet welding on both sides of the welded member 12 by using a preceding electrode 1 and a succeeding electrode 2, penetration depth on both sides of the welded member 12 is set up to be uniform by preparing a difference between an input heat quantity at a preceding electrode 1 side and an input heat quantity at a succeeding electrode 2 side by using the external heat source (the heat source 6 and a cooling source 7) during fillet welding, so that falling of the welded member 12 can be prevented. |
