Patent ID: 6531006
Filing Date: 2003-03-11
Classification: B22D,C22C,C22F

Abstract:
A process for producing a high-strength aluminum foil using a continuous strip caster, comprising the steps of:(a) providing an alloy containing in percentage by weight about 1.2 to 1.7% iron, about 0.4 to 0.8% silicon, about 0.07 to 0.20% manganese and the balance being aluminum and incidental impurities, (b) casting the alloy on a continuous strip caster to form a cast strip having an as-cast thickness of less than about 25 mm, (c) cold rolling the cast strip to interanneal gauge, (d) interannealing the strip at a temperature of about 280 to 350Â° C., (e) cold rolling the interannealed strip to final gauge, and (f) subjecting the final gauge strip to a final anneal.