| 摘要 |
PROBLEM TO BE SOLVED: To realize small thickness of pipe thickness and to outstandingly reduce a material cost by small thickness when a high strength material such as 2Cr steel pipe containing W and 9-12Cr steel pipe is used for a steam turbine pipe. SOLUTION: In the different material welding of the casting steel article of the steam turbine member and a short pipe, in order to ensure material characteristics of both materials, a current and a voltage are adjusted to both materials of the different material welding part as a heat treatment method by high frequency coils 6, 7, 8 so as to become the heat treatment condition of the respective materials. COPYRIGHT: (C)2006,JPO&NCIPI |
