Back to results
US 5,316,206 AGranted
Method of joining aluminium members
AssigneeNorsk Hydro a.s.
InventorsMorten Syslak, Edward J. Morley, Leiv A. Folkedal
Life of this patent
Estimating the term…
Abstract
A method of joining Al-members, includes providing at least one member with a thin coating layer of zinc/zinc alloy metal. Interface alloys of Al and Zn are melted and progressively formed from the Al-members with increasing temperature thereof in a brazing furnace.
Claims15
A method of joining at least two aluminum members by brazing, said method comprising:
- providing at least one of said members with an adhering surface layer of zinc or zinc based alloy;
- preassembling said at least one member having thereon said adhering surface layer with at least one other said member;
- applying flux material to surfaces of said members to be brazed;
- subjecting the thus preassembled members to rapid heating to a predetermined elevated brazing temperature within a furnace and therein exposing said members to said elevated brazing temperature for a predetermined period of time, thereby forming a layer of molten filler material in the form of interface zinc aluminum alloys between said members by diffusion of at least part of the material of said surface layer into the material of said members with increasing temperatures;
- and
- cooling said members and filler material to thereby form an assembly of said members joined by brazed solidified joints formed by said filler material.
3 more elements
Dependencies are inferred from the claim text.