| 摘要 |
PURPOSE:To obtain a good welding quality even in case of a horizontal or vertical welding position, by blowing control gas to the tip part of an arc generated from an electrode, and directing the arc to a filler material side positioned in front of a welding part. CONSTITUTION:In case of build-up welding, by gas shielded arc welding, a control gas nozzle 4 is provided on a torch nozzle 2. Control gas 8 from the control gas nozzle 4 is blown to the tip part of an arc 7 generated from an electrode 3, and the arc 7 is directed to a filler material 5 side positioned in front of a weld. Accordingly, the arc swings forward, a flow of a molten metal is pushed up even in case of a horizontal or vertical welding position, and the arc 7 is directed to the filler material 5, therefore the deposition quantity increases and also a good welding quality is obtained. |
