US 5,476,725 A · Clad metallurgical products and methods of manufacture

Clad metallurgical products and methods of manufacture

AssigneeAluminum Company of America

InventorsKevin S. Papich, Ronald Bachowski, Stephen F. Baumann, Robert A. Cargnel, Gerald E. Carkin, Donald J. Clements, Ronald W. Gunkel, William W. Hoffman, Larry G. McKinney, A. Victor Pajerski, John P. Palko, Edward P. Patrick, Jr., Stephen J. Rennekamp, Philip C. Scheble, William R. Sharkins, Frank P. Swigon, William G. Truckner

Life of this patent

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Abstract

A composite metallurgical product includes a roll cast aluminum alloy core and a filler material bonded on the core. Assemblies joined by filler material are formed from this product by heating to flow the filler material into joints and subsequent solidification of the filler material in the joints. The composite product is made in several ways, including lamination at roll caster rolls, and lamination or thermal spraying at the exit side of a roll caster. The invention additionally provides for an angulation rolling method for varying percent of cladding on the composite, and a high-manganese aluminum alloy useful as core material in brazing sheet clad with aluminum-silicon brazing alloy.

Claims15

Dependent claims

A roll cast, clad sheet product comprising

a core produced by roll casting a single stream of molten aluminum alloy which solidifies before the centerline of the rolls between which the core is cast, said core exhibiting segregation essentially at midthickness,
a cladding bonded to at least one surface of the core, and
the bond between the core and the cladding enhanced by hot working of the clad product by a gauge reduction of at least 2% in the roll caster, and an elongation of the liner by at least 5% prior to hot working of the clad product.

Dependencies are inferred from the claim text.

Facts

Application

07/989,205Filed 10 Dec 1992 · continuation in part

Priority

18 Mar 1991

Granted

19 Dec 1995

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

B32B 15/016
All layers being exclusively metallic: all layers being formed of aluminium or aluminium alloys
B22D 11/008
Continuous casting of metals, i.e. casting in indefinite lengths: of clad ingots, i.e. the molten metal being cast against a continuous strip…
B22D 11/0622
Into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars: formed by two casting wheels
B23K 35/286
With the principal constituent melting at less than 950°C: al as the principal constituent