| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a simple first aid reinforcement means at a low cost that can maintain the reinforcement strength till the next periodic inspection, as a reinforcement means for an expansion portion having occurred in a boiler tube. <P>SOLUTION: A wire 10 of a heat resistant material that has a linear expansion coefficient equal to a boiler tube t is wound around the expansion portion e of the boiler tube t with a pressing force applied to the boiler tube t. At the same time with winding, spot welding is performed at an appropriate portion from the start end and the wound region. Finally, the terminal end of the wire 10 is spot welded to the boiler tube t. Afterward, a SUS-made foil 12 with the long side directed in the boiler tube axis direction is welded to the wire 10 and the boiler tube surface, favorably performing simultaneous welding over the entire region of the SUS-made foil 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
