Aluminum Company of America

Alcoa Inc.

Ronald W Gunkel

Robert A Cargnel

Edward P Patrick

Stephen F Baumann

Gerald E Carkin

A Victor Pajerski

William G Truckner

James R Morran

Ronald Bachowski

William R Sharkins

Donald J Clements

Philip C Scheble

Frank P Swigon

Stephen J Rennekamp

Kevin S Papich

Larry G McKinney

Thomas N Meyer

Charles J Leftault, Jr

William H Hoffman

E Scott Douds

John P Palko

Larry L Podey

John J Palko

William W Hoffman

A method of joining an aluminum cast member to an aluminum component. The method includes the steps of coating a surface of an aluminum component with flux comprising cesium fluoride, placing the flux coated component in a mold, filling the mold with molten aluminum alloy, and allowing the molten aluminum alloy to solidify thereby joining a cast member to the aluminum component. The flux preferably includes aluminum fluoride and alumina. A particularly preferred flux includes about 60 wt. % CsF, about 30 wt. % AlF , and about 10 wt. % Al O .

Fluxing agent for metal cast joining

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.

Method of continuously casting composite strip

Clad metallurgical products and methods of manufacture

This invention provides a method of bulging at least a portion of a sidewall of a drawn or drawn and ironed aluminum container body. The method involves an initial thermal treatment step prior to bulging. The thermal treatment is provided to that portion of the sidewall of the container that is to be bulged and is sufficient to reduce the yield strength of that portion of the sidewall about 20% without substantially adversely affecting the yield strength of the bottom wall of the container. After thermal treatment, at least a portion of the thermally treated sidewall is bulged at a circumferential strain greater than about 5% to provide container shape.

Method for partially annealing the sidewall of a container

This invention provides a method for expanding at least a portion of a cylindrical sidewall of a generally cylindrically shaped, electrically responsive, metallic body. This method comprises the steps of retaining at least a first portion of the metallic body, disposing a coil of electrically conductive material inside the metallic body, and energizing the coil to create an electromagnetic force sufficient to expand at least a portion of the generally cylindrical sidewalls of the metallic body outwardly of the original generally cylindrical shape. During such expansion, a fluid is introduced between the coil and the inside surfaces of the container to maintain positive gauge pressure as the sidewalls expand. This invention also provides an apparatus for expanding at least a portion of a cylindrical sidewall of a generally cylindrically shaped, electrically responsive, metallic body. The apparatus comprises a retaining mechanism for holding the metallic body, a coil of electrically conductive material, structure for disposing the coil inside the metallic body, and structure for energizing the coil sufficient to expand at least a portion of the sidewall of the metallic body. Means for maintaining positive gauge pressure during expansion is also included in the apparatus.

Method and apparatus for reforming a container

A preferably aluminum blind setting rivet including a detachable drill tip, preferably of steel, for self-drilling, the drill tip being attached to the rivet mandrel for drilling a hole to receive the rivet and being subsequently ejected from the mandrel during rivet setting.

Blind setting rivet

Growing community of inventors

Lower Burrell, PA, United States of America

Ronald W Gunkel