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EP0171675A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Zirconium alloy cladding tube, particularly for a nuclear-fuel rod, and process for the manufacture of this cladding tube

Assignee: NRG NUKLEARROHR-GESELLSCHAFT mbH
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Filing: 1985-07-24
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Granted: —
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Expires: 2005-07-24
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Abstract

Abstract Translated from German Bei einem gegen Spannungsrißkorrosion widerstandsfähigen Hüllrohr aus einer Zirkoniumlegierung ist der geometrische Mittelwert der Korndurchmesser in der Zirkoniumlegierung kleiner als oder gleich 3 µm. Vereinfacht und kostengünstig wird dieses Hüllrohr aus einem Ausgangsrohr hergestellt, das ohne Rekristallisationsglühen und rißfrei so gepilgert wird, daß sich eine Querschnittsänderung der Rohrwand im Bereich von 90% oder mehr ergibt. With a cladding tube made of a zirconium alloy that is resistant to stress corrosion cracking, the geometric mean of the grain diameter in the zirconium alloy is less than or equal to 3 μm. Simplified and inexpensive, this cladding tube is produced from an initial tube which is pilgrimed without recrystallization annealing and without cracks in such a way that the cross-section of the tube wall changes by 90% or more.

Inventors

  • 👤 Siegfried Dr. Dipl.-Ing. Reschke
  • 👤 Eckard Steinberg

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 22:45
CPC Classifications
B; B21; B21B; B21B21/00; B21B21/005; C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/186; G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; B21B3/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30

Claims Analysis

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References Cited (Backward Citations)

DE2951102A1 Cited
EP0085553A2 Cited

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