Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet
First Claim
1. A method of brazing aluminum or aluminum alloy materials, which comprises:
- keeping one side of a clad surface of a filler alloy of an aluminum alloy brazing sheet inside a brazing assembly;
forming the brazing sheet to constitute a hollow structure; and
carrying out brazing on the inside of the formed hollow structure without applying flux in an inert gas atmosphere, wherein said sheet has an aluminum or aluminum alloy core clad with a filler alloy layer composed of an Al—
Si-based alloy on one side or both sides thereof, and contains Mg at least in a layer constituting the brazing sheet other than the filler alloy layer.
2 Assignments
0 Petitions
Accused Products
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.
39 Citations
28 Claims
-
1. A method of brazing aluminum or aluminum alloy materials, which comprises:
-
keeping one side of a clad surface of a filler alloy of an aluminum alloy brazing sheet inside a brazing assembly;
forming the brazing sheet to constitute a hollow structure; and
carrying out brazing on the inside of the formed hollow structure without applying flux in an inert gas atmosphere, wherein said sheet has an aluminum or aluminum alloy core clad with a filler alloy layer composed of an Al—
Si-based alloy on one side or both sides thereof, and contains Mg at least in a layer constituting the brazing sheet other than the filler alloy layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification