Metal fusion bonding – Process – Critical work component – temperature – or pressure
Reexamination Certificate
2005-10-12
2009-02-24
Zimmerman, John J (Department: 1794)
Metal fusion bonding
Process
Critical work component, temperature, or pressure
C219S146220, C428S654000, C420S541000, C420S543000
Reexamination Certificate
active
07494043
ABSTRACT:
A method for constructing a welded construction, including the steps of: (a) providing separate component parts of the construction and (b) welding the separate parts together with an Al—Mg—Mn weld filler alloy having a good corrosion resistance and improved strength levels. The separate component parts having the following composition (in weight percent): Mg 4.9 to 6.0; Mn 0.6 to 1.2; Zn 0.25 to 1.5; Zr 0.05 to 0.25; Cr 0.3 max.; Ti 0.2 max.; Fe 0.5 max.; Si 0.5 max.; Cu 0.25 max.; Sc 0.3 max., balance inevitable impurities and aluminium. The Al—Mg—Mn weld filler alloy having the following composition (in weight percent): Mg 7.0-9.5; Mn 0.9-2.0; Zn 0.2-0.9 Zr≦0.3; Cr≦0.5; Sc≦2.8; Cu≦0.5; Fe≦0.5; Si≦0.5; Ti≦0.3, the balance aluminium and incidental elements and impurities.
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Mechsner Klaus Alfons
Wouters Huibrecht Adriaan
Aleris Aluminum Koblenz GmbH
Novak Druce & Quigg LLP
Zimmerman John J
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