Apparatus and method for reforming and rolling deformed ends of tubes.

摘要

A remotely controlled tool for both expanding and reforming the dented end of a tube within the tubesheet of a nuclear steam generator, comprises a rotatable roller cage having a diameter which is approximately the same as the minimum diameter across the dented tube end, a plurality of rollers rotatably mounted within pitched slots in the roller cage, a tapered mandrel slidably movable within an opening in the cage for rotating, orbiting and radially extending the rollers, and a ring 115 which circumscribes at least a substantial portion of the cage for providing a surface around and against which the rollers may rotate when the roller-driving mandrel is rotated. In the preferred embodiment, the cage is rotatably mounted within a collar and the ring is detachably mounted around the proximal end of the roller cage.