Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet
US6896977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Mar 24, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12986
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of brazing an aluminum or aluminum alloy material, containing brazing an aluminum alloy brazing sheet that has an aluminum or aluminum alloy core material and, being clad on one or both surfaces, a filler alloy layer comprised of an Al—Si-based alloy and contains Mg incorporated at least in a constituent layer except the filler alloy layer, thereby to form a hollow structure whose one surface clad with the filler alloy is the inner surface, wherein the brazing is carried out in an inert gas atmosphere without applying any flux; and an aluminum alloy brazing sheet which satisfies the relationship: (X+Y)≦a/60+0.5 and X>Y, wherein a (μm) represents the thickness of the filler alloy layer clad on the core material of the inner side of the hollow structure, and X and Y (mass %) represent the Mg contents of the core material and the brazing material, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.