| 摘要 |
A repairing method, to improve fatigue resistance of an atmospheric tank containing corrosive matter such as crude oil and Naphtha, comprises a step to weld a reinforcing steel plate of 50 to 150 % thickness of the bottom plate of the tank, within 10 mm from the side wall, on the bottom plate, a step to weld the space between the side wall and the reinforcing steel plate by covered arc welding, a step to weld between the side wall and the welded part of the reinforcing steel plate by 3 to 5 pass pillet welding using covered arc welding wire, a step to do TIG welding between the welding part of the side wall and that of the reinforcing steel plate by welding wire with welding wire containing lower carbon content than the bottom plate, and/an heat treatment process.
|
