C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 9/04 (2006.01) B22D 1/00 (2006.01) B22D 21/00 (2006.01) B22D 27/20 (2006.01) C22C 9/00 (2006.01)
Patent
CA 2563096
A fish cultivation net 3 has a rhombically netted form made by arranging a large number of waved wires 6 in parallel such that the adjacent wires are entwined with each other at their curved portions 6a. The wires 6 has a composition containing 62 to 91 mass% of Cu, 0.01 to 4 mass% of Sn, and the balance being Zn. The Cu content [Cu] and the Sn content [Sn] in terms of mass% satisfy the relationship 62 <= [Cu]-0.5[Sn] <= 90. The copper alloy material has a phase structure including an a phase, a .gamma. phase, and a .delta. phase and the total area ratio of these phases is 95 to 100%.
Cette invention a pour objet un filet à poissons d'élevage (3) à structure en treillis métallique en forme de losange, comprenant de multiples matériaux à armatures (6), ondulés et disposés en parallèle, lesdits matériaux à armatures contigus (6) étant entremêlés au niveau de leurs parties courbées (6a). Ces matériaux à armatures (6) sont composés d'un matériau en alliage de cuivre dont la composition d'alliage contient entre 62 et 91 % de cuivre en masse, entre 0,01 et 4 % d'étain en masse et dont le reste de zinc comprend la teneur en cuivre [Cu] % en masse et la teneur en étain [Sn] % en masse correspond à la relation 62 = [Cu] - 0.5[Sn] = 90, ce matériau en alliage de cuivre possédant la structure de phase suivante : le contenu total des a-phase, ?-phase et d-phase compris 95 et 100% en termes de rapport de section.
Mitsubishi Shindoh Co. Ltd.
Riches Mckenzie & Herbert Llp
Sambo Copper Alloy Co. Ltd.
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