| 摘要 |
PURPOSE:To improve the quality in welding by forming a welding estimate part by providing a forming part on the feeding path of a fine wire and projecting a laser light on the forming surface whose reflectance is reduced. CONSTITUTION:The forming part consisting of a straightening roller 3, 4 and forming edge 5 is provided for the real 1 storing a fine wire 1 and a cutter 6, right and left clamps 7, 8 are arranged to form the feeding path of a fine wire 20. At the time when a clamp 8 leads the fine wire 20, a rough face 11 is formed on the surface of the laser light hitting side by the forming edge 5. Welding is then performed on the rough face 11 reducing the reflectance. Due to the reflectance of the rough face 11 being low the absorption factor of a laser light is increased and the energy necessary for welding can be reduced. Due to a s stabilized welding being executed and the laser light output being reduced a secondary damage is prevented. Consequently the welding quality is improved. |
