| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method of welding a Zn-containing substance-coated material, in which influence of a Zn-containing substance on laser arc hybrid welding is suppressed when a Zn-containing substance-coated welding base material is subjected to laser arc hybrid welding, and to provide a laser arc hybrid welding apparatus. <P>SOLUTION: The laser arc hybrid welding apparatus 1 includes a welding torch 11, a wire feeding section 12, a power source section 13, a laser torch 23, a laser oscillator 21, and a laser beam transmission means 22 which transmits a laser beam generated by the laser oscillator 21 to the laser torch 23. The apparatus includes a light reflectivity measuring means 27 for measuring light reflectivity of a bead formation planned part B of the welding base material W and is constituted so that the residual amount of the Zn-containing substance in the bead formation planned part B is checked on the basis of the light reflectivity before the welding torch 11 and the laser torch 23 pass through. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
