| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flux-cored wire for welding different materials, a method for laser welding of different materials, and a method for MIG welding of different materials capable of increasing the tensile shear strength of a weld joint and the peeling strength of a weld part interface when welding aluminum or an aluminum alloy material to a galvanized steel materials. <P>SOLUTION: The flux-cored wire 1 is used in the laser welding of different materials that are aluminum or an aluminum alloy material 2 and a galvanized steel material 3. The flux-cored wire 1 comprises a cylindrical sheath constituted of an aluminum alloy containing 0.8-1.9 mass% Si, with the balance aluminum and inevitable impurities, and a flux filled in the space within the sheath and containing 20-60 mass% cesium fluoride. The inevitable impurities in the sheath include Mn, Mg, or Fe, and the contents of these impurities are at most 0.1 mass% each with respect to the total mass of the sheath. The percentage of filling of the flux is 5-20 mass% with respect to the total mass of the wire. <P>COPYRIGHT: (C)2011,JPO&INPIT |
