Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2005-07-26
2005-07-26
Koehler, Robert R. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S610000, C428S933000, C165S180000, C165S905000
Reexamination Certificate
active
06921584
ABSTRACT:
The invention relates to a series of extra strong and durable aluminium alloy brazing sheets with enhanced corrosion resistance for brazed heat exchangers. The alloy sheets are based on recycled materials and are suitable for manufacturing of fins, welded tubes, headers and sideplates. The alloy sheets showed improved corrosion performance with respect to pitting corrosion, excellent high temperature sagging resistance and post braze strength, and a good brazeability. By optimising the material combination of fin, tube, header and sideplates it is possible to produce a heat exchanger with adequate corrosion performance in SWAAT.
REFERENCES:
patent: 4649087 (1987-03-01), Scott et al.
patent: 6063510 (2000-05-01), Inabayashi et al.
patent: 0 799 667 (1997-10-01), None
Bjørneklett Børge
Evensen Jon Dag
Jiang Xiao-Jun
Stakkestad Gro
Syslak Morten
Koehler Robert R.
Norsk Hydro ASA
Wenderoth , Lind & Ponack, L.L.P.
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