Fabrication process of uranium foil having fine grains...

B - Operations – Transporting – 22 – D

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B22D 11/06 (2006.01) B22D 11/113 (2006.01) C22C 1/02 (2006.01) C22C 43/00 (2006.01)

Patent

CA 2347209

The present invention is concerned with the fabrication process of low or high enrichment uranium and uranium alloy foil, and the fabrication apparatus therefor. Uranium (U) and uranium alloy [U-(A)Q-(B)X-(C)Y (Q: Al, Fe, Ni, Si, Cr, Zr element, X: Al, Fe, Ni, Si, Cr, Zr element, Y: Al, Fe, Ni, Si, Cr, Zr element, Q .noteq. X .noteq. Y, (A) <= 1 wt%, (B) <= 1 wt%, (C) <= 1 wt%)] foil are directly obtained from a melt, not through a vacuum induction melting & casting, ingot cutting, hot-rolling and heat-treatment process, but through melt spinning or a twin-roll casting process. Major advantages have been obtained as follows: 1) a simplified process without the hot--rolling process and heat-treatment process, 2) an improvement in productivity and process economics in foil fabrication, and 3) a high purity and a high quality of the foil.

La présente invention concerne le processus de fabrication de l'uranium faiblement ou fortement enrichi et de feuilles d'alliage d'uranium et l'appareil de fabrication connexe. L'uranium (U) et les feuilles d'alliage d'uranium, l'élément ¬U (A) Q-(B) X-(C) Y (Q: Al, Fe, Ni, Si, Cr, Zr, l'élément X: Al, Fe, Ni, Si, Cr, Zr, l'élément Y: Al, Fe, Ni, Si, Cr, Zr, Q noteq X noteq Y, (A) ltoreq 1 % en poids, (B) ltoreq 1 % en poids, (C). ltoreq 1 %. en poids)| sont directement obtenus directement par fusion, non pas par un processus de fusion par induction sous vide et une coulée, de découpe de lingots, de laminage à chaud et de traitement thermique, mais par un processus de filage à chaud ou une coulée à deux cylindres. Les principaux avantages ont été obtenus comme suit: 1) une procédure simplifiée sans laminage à chaud et traitement thermique 2) une amélioration de la productivité et de l'aspect économique du processus de fabrication de feuilles d'alliage d'uranium et 3) une grande pureté et qualité des feuilles.

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