Grid welding fixture for a spacer grid

Details Grid welding fixture for a spacer grid Grid welding fixture for a spacer grid

1994-05-20

1995-03-14

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

219158, 269 40, 269 41, 269118, 976DIG81, 29723, G21C 2100

Patent

active

053982649

ABSTRACT:
A modular grid welding fixture for a spacer grid that facilitates full grid laser welding of a spacer grid in one setup. The modular design allows for partial implementation of each weld type. A base plate is used for mounting to the positioning/rotational plate of the welding system. A removable sub-plate received in the base plate is used to position the grid strips for proper location for welding. A top fixture plate is aligned with the base plate and provides for mounting of a second sub-plate if required. Side plates with spring loaded pressure pads that are hinged to the top fixture plate apply uniform pressure to the outer grid strips during processing. The base plate, top plate, side plate, and pressure pads are provided with a plurality of through holes to allow access of the laser beam for welding. Corner clips are used to insure contact of the overlapping sections of the outer grid strips for proper corner welding.

REFERENCES:
patent: 4492844 (1985-01-01), Kobuck et al.

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