C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/10, 22/166
C22F 1/04 (2006.01) C22C 21/08 (2006.01)
Patent
CA 1176817
AS-165-M-III TITLE: FABRICATION OF ALUMINUM ALLOY SHEET FROM SCRAP ALUMINUM FOR CONTAINER COMPONENTS Abstract of the Disclosure A composition and method whereby aluminum scrap, including consumer scrap, is recycled and fabricated into aluminum sheet and aluminum containers. Aluminum scrap is melted in a heated furnace to form a melt composition. The melt is adjusted to form the present composition, consisting essentially of silicon, 0.1 - 1.0%; iron 0.1 - 0.9%; manganese 0.4 - 1.0%: magnesium 1.3 - 2.5%; copper .05 - 0.4%; and titanium, 0 - 0.2%, the balance being essentially aluminum. Aluminum scrap comprising consumer scrap, plant scrap, and can making scrap is heated to form the melt composition, which requires a minimum amount of adjustment to arrive at the present alloy composition. The composition is then cast and fabricated into sheet having strength and formability properties making it suitable for container manufacture. Container manufacture according to the process and compo- sition of the present invention comprises drawn-and-ironed can body manufacture and easy-opening end manufacture. Sheet fabrication according to the present invention comprises direct chill casting, scalping, preheating, hot breakdown rolling, continuous hot rolling, annealing, cold rolling and shearing.
333180
Mcauliffe Donald C.
Robertson King G.
Coors Container Company
Swabey Ogilvy Renault
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