Method for manufacturing an aluminum alloy fin material for brazing
US6620265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 20, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F1/126
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing an aluminum alloy fin material brazing comprises forming an ingot sheet by casting a molten liquid of an aluminum alloy by a continuous casting rolling method, and cold-rolling the ingot sheet to prepare a fin material. The aluminum alloy contains prescribed amounts of Mn, Fe, and Si, with the balance being Al and inevitable impurities. The continuous cast-rolling is applied under each a prescribed condition of a molten liquid temperature, a roll press load, a casting speed, and a thickness of the ingot sheet. Two or more intermediate annealings are applied midway in the cold-rolling process, with intermediate annealing including final intermediate annealing with a heating furnace in prescribed temperature range, thereby adjusting the prescribed rolling ratio in the cold-rolling, after the final intermediate annealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.