Method of making aluminum alloy foil and product therefrom
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 10, 1998
Grant Date -
N/A
app pub date -
Mar 26, 1996
filing date -
Mar 26, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of making an aluminum foil product from an aluminum-silicon-iron aluminum alloy comprises casting the alloy into a slab, preferably by twin roll casting, cold rolling the alloy to an intermediate gauge and reroll annealing the intermediate gauge material. The reroll annealed material is then cold rolled to a final foil gauge followed by a final recrystallizing annealing. The aluminum alloy has a controlled amount of silicon and iron such that the silicon is equal to or greater than the iron amount and the reroll anneal temperature is 800.degree. F. (427.degree. C.) or less. The combination of the controlled amounts of silicon and iron and the lower reroll anneal temperature results in an improved foil product in terms of finer grain size and higher elongation which is also less costly to produce.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- C22C Class
- 4.07 % this patent is cited more than
- 27 Age