Aluminum Company of America

Thomas J Rodjom

Joseph R Sikora

Richard B Jacobus

William R Arthur

Douglas T Bozich

C Edward Eckert

Ralph R Sawtell

Men Glenn Chu

Lawrence W Cisko

Thomas R Hornack

James R Fields

William G Truckner

Gerald D Scott

M K Premkumar

Thomas J Kasun

Mohammad A Zaidi

Robert C Wallace

Warren H Hunt

Richard A Manzini

John H Milsom

George C Full

Jerri F McMichael

Erik J Hilinski

Janel M Miller

A method of preparing a metal alloy product from a powder blend. The method comprising: (a) cold pressing a blend to form a compact, the metal blend comprising a metal powder phase and at least one reinforcement phase having a hardness greater than the metal phase; (b) heating the compact to form a preheated compact; and (c) hot working the heated compact. In a preferred method, the powder metal blend comprises 50 to 90 vol. % of an aluminum alloy powder and 10 to 50 vol. % of silicon carbide; the heating of the compact perforated in a nitrogen atmosphere to form a preheated compact; and the extruded hot compact is hot worked. Hot working may take the form of forging, rolling, upset forging, exuding, compacting or other processes known in the art.

Method of producing structural metal matrix composite products from a

Apparatus for cooling a metal extrusion, such as an aluminum extrusion, may include a carriage which houses the cooling liquid delivery system and is relatively movable with respect to the extrusion press in order to provide the desired amount of air cooling prior to quenching. The quenching apparatus may have a plurality of generally parallel cooling liquid delivery tubes, each having a plurality of nozzles which are preferably independently adjustable as to volume and spray pattern. The cooling liquid delivery tubes may be axially rotated and flow of the cooling liquid within each tube may be independently adjusted. The housing of the quenching unit may have an upper portion which is rotatable generally upwardly and is provided with a transparent window to facilitate viewing of the spraying action. A method of quenching an aluminum extrusion employing such apparatus is provided.

Extrusion quenching apparatus and related method

This invention provides improved casting processes, equipment, and products. The invention is especially advantageous for die casting.

Die-casting process and equipment

A method for stretch shaping an elongated metallic extrusion is disclosed comprising the steps of applying axial tension to an elongated metallic extrusion in an amount sufficient to equal or exceed the yield strength of the extrusion. An external shaping die is applied against a perimetric portion of the outside surface of the extrusion. The die has working faces conforming substantially to a finished cross-sectional shape for the extrusion. While maintaining such tension the die is advanced along a length of the extrusion. An apparatus for stretch shaping an elongated metallic extrusion is also disclosed.

Stretch shaping method and apparatus

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Murrysville, PA, United States of America

Thomas J Rodjom