B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/167
B22D 21/04 (2006.01) B21B 3/00 (2006.01) C22C 21/06 (2006.01) C22F 1/047 (2006.01)
Patent
CA 1171234
AS-165-M-IV TITLE: CONTINUOUS STRIP CASTING OF ALUMINUM ALLOY FROM SCRAP ALUMINUM FOR CONTAINER COMPONENTS Abstract of the Disclosure A composition and method whereby aluminum scrap, including consumer scrap, is recycled 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 essen- tially 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 continuously casting the molten composition to produce a moving strip; hot rolling the moving strip at casting speed; coiling and allowing the hot rolled stip to cool; and cold rolling the hot rolled stip to final gauge.
333159
Bichsel Heinz
Buxmann Kurt
Gyongyos Ivan
Neufeld Kurt
Swabey Ogilvy Renault
Swiss Aluminium Ltd.
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