Process and installation for welding grids for nuclear fuel asse

Details Process and installation for welding grids for nuclear fuel asse Process and installation for welding grids for nuclear fuel asse

1983-11-09

1986-06-17

Envall, Jr., Roy N.

Electric heating

Metal heating

Wire, rod, or bar bonding

2191251, 219159, 219 56, B23K 9225, B23K 932

Patent

active

045958157

ABSTRACT:
For welding a grid formed by sets of plates disposed orthogonally and whose endmost parts are secured to a surround, it is placed in a shaping and mechanically holding frame allowing access to the point to be welded. The frame containing the grid is then placed on a revolving device belonging to a roundabout, at a first welding position and welding is carried out therein on at least one face of the grid by means of a welding member movable in two perpendicular directions for bringing it at right angles to each of the welding points on the face. The frame is then brought to a second welding position in which the plates are welded to the surround by means of a second welding member movable in only one direction, after rotation through 90.degree. of the frame by means of the revolving device; and the operations are repeated as necessary until the whole of the welds have been executed.

REFERENCES:
patent: 3547334 (1970-12-01), Gwyn, Jr.
patent: 4111348 (1978-09-01), Laird
patent: 4221319 (1980-09-01), Paice

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