| 摘要 |
PURPOSE:To provide a method for hard facing by welding onto the surface of an alloy where the joinability with the base metal of the Al alloy is high, no defective weld such as cracks and blowholes is generated, and the hard faced layer excellent in the wear resistance and the heat resistance especially at high temperature can be stably obtained. CONSTITUTION:The surface of the aluminum alloy 10 to be shielded with the inert gas is irradiated with the laser beam 7, and the hard faced layer 1 3 is formed on the surface of the aluminum alloy by feeding the flux-cored wire 11 for the hard facing by welding where the outer skin 1 is made of Cu-based material, and having the composition consisting of, by weight, 10-70% Cu, 1-50% hard lacing particles, and the balance Al with inevitable impurities to the source. |
