| 摘要 |
Method of joining fuel rod end caps and cladding tubes by resistance pressure welding within a welding chamber. A welding device is brought into engagement with an end portion of a rigidly mounted cladding tube. An opening chuck as well as a divided welding electrode, both of which are mounted at one side of the welding chamber, are shifted along a predetermined length of the cladding tube end portion. The chuck and the divided welding electrode are brought into contact with the cladding tube end portion. Another welding electrode carrying and end cap is thrust into the welding chamber from the other side thereof so that the end cap is fed to the open end of the cladding tube end portion. The welding chamber is sealed by sealing members sealingly engaging the cladding tube end portion and the other welding electrode and then the interior of the welding chamber is evacuated and filled with protective gas. The end cap is pressed onto the open end of the cladding tube end portion. A welding current is passed through the welding electrodes so as to weld the end cap to the end of the cladding tube end portion. |
