Patent ID: 6663729
Filing Date: 2003-12-16
Classification: B22D,C22C,C22F

Abstract:
A process for producing an aluminum foil product by continuous strip casting in which the product exhibits excellent rollability combined with high strength of final foil product comprising the steps of:(a) providing an aluminum alloy containing 1.2 to 1.7% by weight Fe and 0.35 to 0.80% by weight Si, with the balance aluminum and incidental impurities, (b) continuous strip casting the alloy on a belt caster to form a cast strip having an as-cast thickness of less than about 5 to 25 mm, (c) cold rolling the cast strip to interanneal gauge, (d) interannealing the strip at a temperature of at least 400Â° C., (e) cold rolling the interanneal strip to final gauge, and (f) subjecting the final gauge strip to a final anneal.