| 摘要 |
PURPOSE:To easily allow the butt welding of fine wires by butting a pair of the fine wires, holding the butt parts by means of a holder, the part in the butt position of which consists of a material to allow the transmission of a laser beam, and irradiating the butt parts with the laser beam. CONSTITUTION:A pair of the fine wires 1a, 1b to be welded are held in the holder made of the transparent material, such as glass, which allows the transmission of the laser beam, by butting the end faces in a through-hole 3 provided as a cavity part for insertion. The butt parts 8 are irradiated with the laser beam 4 from the outside and are thereby welded. The fine wire is pulled from the holder 2 after the welding or the holder 2 is broken and the fine wire is taken out. The inside surface shape of the through-hole 3 of the holder 2 is made to comply with the outside surface shape of the fine wire 1 and is formed by adding the allowance permitted after the welding thereto. The build-up and burn-through of the weld zone are prevented in this way and the operation to register the tine wires is simplified. The butt welding of the fine wires is thus easily executed. |
