| 摘要 |
PURPOSE:To execute satisfactory welding in joining of a copper or copper alloy material and iron or steel material by disposing a metallic filler member having the m. p. higher than the m. p. of the former and prescribed laser absorptivity to a weld zone and melting the copper material by the melting heat of the filler member by the laser light. CONSTITUTION:For example, an arc welding wire 4 having the m. p. higher than the m. p. of the copper or copper alloy material 2 having the low m. p. and good laser absorptivity is disposed as the filler member in the weld zone between the copper or copper alloy material 2 and the iron or steel material 1. The filler member 4 is melted by the laser light irradiated thereon and the copper material 2 is melted 6 by the melting heat thereof, by which the satisfactory welding is executed. |
