| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal powder-filled welding wire in which filled flux is made of metal powder and/or alloy powder and which enables weld metal to have an absorbed energy at 0°C of 70 J or higher in 2 mm V notch Charpy impact test, in non-consumable nozzle type electroslag welding. SOLUTION: The alloy compositions of an outer skin made of steel and the whole of a welding wire are optimized, then, the content of Al in the welding wire is limited to≤0.030%, also, Ti and Mg are made to satisfy [Mg]+[Ti]/5=0.020 to 0.30%, and also the filling ratio of the metal powder is 5-20% by mass% to the whole of the welding wire. COPYRIGHT: (C)2011,JPO&INPIT |
