Method for manufacturing very thin aluminum-iron alloy strips
US6517646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Aug 13, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing aluminum alloy strips with a thickness less than or equal to 12 &mgr;m, by obtaining an alloy with composition (weight %):Si:0.15-0.40; Fe: 1.10-1.70; Mg<0.02; Mn:0.30-0.50; other elements <0.05 each and total <0.15; remainder aluminum;continuously casting between rolls a strip of this alloy with a thickness between 2 and 10 mm;homogenizing this strip at a temperature between 450 and 620° C. with a duration between 8 and 40 hrs;cold-rolling of the homogenized strip;intermediate annealing of this cold-rolled strip to a temperature between 200 and 400° C., and with a duration between 8 and 15 hrs;cold-rolling of the annealed strip up to the final thickness less than or equal to 12 &mgr;m; andfinal annealing of the strip at a temperature between 200 and 300° C., with a duration of at least 50 hrs. The method is notably applied to the manufacturing of strips for aseptic food packages of the brick type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.