| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress that a filler wire 6 becomes a non-short circuit state with a base material 2 due to feeding variation in two-wire welding.SOLUTION: In a two-wire welding control method in which an arc 3 is generated between a consuming electrode 1 and a base material 2 to form a molten weld pool 2 and a filler wire 6 is fed so as to become a short circuit state with the molten weld pool 2 resulting in welding, it is discriminated during welding that the filler wire 6 becomes a non-short circuit state with the molten weld pool 2. If the non-short circuit state continues for a first reference value Tt1 or more (period of the time of t4 to t5), the feeding speed Fw of the filler wire 6 is accelerated from the steady filler wire feeding speed Fc to the accelerated filler wire feeding speed Fh. Thus, even if the filler wire 6 becomes a non-short circuit state due to feeding variation, it can be recovered quickly to a short circuit state.</p> |
