Method for making an improved aluminum alloy sheet product

C - Chemistry – Metallurgy – 22 – F

Patent

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C22F 1/04 (2006.01) C22C 21/00 (2006.01) C22C 21/06 (2006.01) C22F 1/047 (2006.01)

Patent

CA 2214888

An aluminum alloy sheet and a method for producing an aluminum alloy sheet. The aluminum alloy sheet is useful for forming into drawn and ironed container bodies. The sheet preferably has an after-bake yield strength of at least about 37 ksi and an elongation of at least about 2 percent. Preferably the sheet also has earing of less than about 2 percent. The figure shows the major process steps for producing an aluminum alloy sheet by casting, hot rolling, an optional hot mill anneal, cold rolling, intermediate cold mill annealing, and cold rolling to final gauge.

Feuille en alliage d'aluminium et procédé de production de ladite feuille qui est utile pour former des corps de boîtes étirés et chaudronnés. Ladite feuille présente de préférence une limite d'élasticité après cuisson d'au moins environ 37 ksi et un allongement d'au moins environ 2 pour cent. De préférence, ladite feuille possède également un indice de corne inférieur à 2 pour cent. La figure montre les principales étapes du processus de production d'une feuille d'alliage d'aluminium qui sont le coulage, le laminage à chaud, éventuellement le recuit à chaud, le laminage à froid, le recuit intermédiaire à froid et le laminage à froid aux cotes finales.

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