C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 19/05 (2006.01) B21B 25/00 (2006.01)
Patent
CA 2615330
A wear and oxidation resistant nickel-base alloy, exhibiting resistance to thermal cracking in high-stress elevated temperature environments, comprises, in weight percentages based on total alloy weight: 53 to 67 nickel; 20 to 26 chromium; and 12 to 18 tungsten. The alloy optionally further comprises, in weight percentages based on total alloy weight, at least one of: up to 3 cobalt; up to 3 molybdenum; up to 6 iron; 0.1 to 0.5 manganese; 0.1 to 0.7 silicon; 0.1 to 0.6 aluminum; and less than 0.05 carbon. Components of a seamless tube manufacturing apparatus fabricated from the alloy also are provided. The components may be, for example, tools for one of a piercing mill, a high mill, and a rotary expander, such as piercer points, piercing mill guide shoes, rotary expander guide shoes, reeler guide shoes, and high- mill plugs.
L'invention porte sur un alliage de nickel résistant à l'usure et à l'oxydation et exempt de criques thermiques quand soumis à des températures élevées sous fortes contraintes. Ledit alliage comporte en pourcentage de son poids total: de 53 à 67% de nickel; de 20 à 26% de chrome, de 12 à 18% de tungstène, jusqu'à 3% de cobalt, jusqu'à 3% de molybdène, jusqu'à 6% de fer, de 0,1 à 0,5% de manganèse; de 0,1 à 0,7% de silicium; de 0,1 à 0,6% d'aluminium; et moins de 0,05% de carbone. L'invention porte également sur des composants d'un appareil de production de tubes sans soudure faits de cet alliage, et pouvant par exemple être des outils de laminoir perceur, duo et quarto, et de détendeur rotatif, tels que des cônes de perceurs, des sabots de guidage et des mandrins.
Cokain Thomas W.
Kapadia Behram M.
Stein Charles J.
Damascus Steel Casting Company
Ridout & Maybee Llp
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