Method for manufacturing a fin material for brazing
US6660108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | May 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing an aluminum alloy fin material for brazing, which comprises:casting an aluminum alloy by continuous cast-rolling, wherein the alloy comprises above 0.1 wt % to 3 wt % of Ni, above 1.5 wt % to 2.2 wt % of Fe, and 1.2 wt % or less of Si, and at least one of Zn, In, and Sn in given amounts, the balance being unavoidable impurities and aluminum, andcold-rolling in which annealing at 250 to 500° C. is conducted plural times midway in the cold-rolling, thereby producing the fin material of a given thickness;wherein a cast coil with a given thickness is produced by continuous cast-rolling, andwherein the second last annealing is carried out with a given thickness, andwherein the final annealing is carried out under heating conditions that do not allow complete recrystallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.