Keystone Powdered Metal Company

Peter Stauffer

Gary L Anderson

Barry Kline

This invention relates to a method for manufacturing a metal part which comprises attaching a powder forged or wrought outer raced ID splined plate to a powdered metal inner splined connection gear, wherein the outer raced ID splined plate incorporates a female ID profile on the race, wherein the inner splined connection gear contains a mail OD profile on the exterior of the part, and wherein the splined plate and the splined connection gear are attached together by (1) sinter brazing, (2) laser brazing, (3) laser welding, (4) sintering a mechanical joint, or (5) staking. In practicing this method a tight mechanical joint is formed between the splined plate and the splined connection gear which can be made of highly dissimilar materials, such as a wrought metal and a sintered powder metal.

Attachment of powdered metal to powder forged or wrought materials

By utilizing the technique of this invention, parts such as gears, bearing races, and one-way clutches, which could previously only be made via labor intensive machining procedures can be made utilizing power metal technology. The subject invention provides a method of manufacturing a high strength part which comprised (1) providing an external component having an external profile and an internal profile, wherein the external component is comprised of a forged powder metal or a wrought metal; (2) compacting a powder metal composition within the internal profile of the external component to produce a green internal component having a desired internal profile; and (3) sintering the green internal component within the confines of the external component to produce high strength part, and wherein the internal component is comprised of a powder metal which expands to a greater degree than does the forged power metal or the wrought metal during sintering.

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St. Marys, PA, United States of America

Peter Stauffer