Method and apparatus for sizing nuclear fuel rod cladding tubes

Details Method and apparatus for sizing nuclear fuel rod cladding tubes Method and apparatus for sizing nuclear fuel rod cladding tubes

1974-11-05

1976-09-14

Hall, Carl E.

Metal deforming

By application of fluent medium, or energy field

By kinetic energy of fluid or field

29421R, 72 63, 72468, B21D 2602

Patent

active

039799360

ABSTRACT:
Nuclear fuel rod cladding tubes are sized internally to diameters precisely fitting nuclear fuel pellets with which the tubes are charged, by externally applying hydraulic pressure to short lengths of each tube, the pressure being applied while the tube is stationary and the tube then moved to bring a new length within the hydraulic pressure zone. The volume of the hydraulic liquid used and the pressure applied to this liquid is such that the liquid is compressed slightly so that the length being sized yields, the expansion of the liquid then completing the sizing. The lengths being sized step-by-step are internally supported by either the fuel pellets or a mandrel having the same diameter as the pellets.

REFERENCES:
patent: 3247693 (1966-04-01), Green
patent: 3657793 (1972-04-01), Scharf
patent: 3688535 (1972-09-01), Keinanen et al.

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