Metal fusion bonding – With control means responsive to sensed condition – Work-responsive
Patent
1993-03-31
1994-12-27
Bradley, P. Austin
Metal fusion bonding
With control means responsive to sensed condition
Work-responsive
228 9, 228 42, 228 60, 29723, B23K 902, B23K 3700
Patent
active
053757564
ABSTRACT:
In an automated final weld apparatus, a transporter conveys nuclear fuel-loaded cladding tubes successively to a check station to verify the presence of a plenum spring in the open end of each cladding tube, a reader station where a unique first end plug serial number is read, an evacuation/backfill station where the cladding tube is backfilled with helium, a seam welding station where a final end plug is welded to the cladding tube open end, and a seal weld station where the tube is pressurized with helium through a pressurization hole in the final end plug, whereupon the pressurization hole is welded closed. After checking for helium leakage, the seam weld is inspected in a succession of inspection stations, and, depending on inspection results, the finished nuclear fuel rods are sorted into accepted and rejected lots.
REFERENCES:
patent: 4511075 (1985-04-01), Yeo
patent: 4660270 (1987-04-01), Rieben
patent: 4857260 (1989-08-01), Schoening, Jr. et al.
patent: 4919884 (1990-04-01), Chotard
Haughton Robert A.
Landry James D.
Reda Ralph J.
Sziemkiewicz Robert J.
Bradley P. Austin
General Electric Company
Knapp Jeffrey T.
McGinness J. E.
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