Process for manufacturing toroid parts
AssigneeKeystone Powdered Metal Company
InventorsGary L. Anderson, Peter G. Imbrogno, Kevin Brunner
Life of this patent
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Abstract
It has been found that duplex monolithic parts can be manufactured in high volume at low cost by using powder metal technology to mold and sinter an inner component of the part into an outer component of the part. This technique reduces the cost of manufacturing intricate metal products by taking advantage of the attributes of powder metal technology in making the inner component of the part. The outer component of the part can be wrought machined, stamped or forged, or made by double press double sinter or forging a powder metal component of the part. In any case, this technique can beneficially be used in making a wide variety of toroid parts, such as gears, clutches, sprags, bearing races, one-way diodes, and the like.
Claims20
A method for manufacturing a toroid part having a high strength outer component and an inner component, said method comprising (1) molding a powdered metal composition into the inside of a metal outer ring component to make a compacted part, wherein the metal outer ring is comprised of a cast metal having a density which is within the range of 7.8 g/cc to 7.85 g/cc, wherein the powder metal is compacted under a high pressure which is within the range of 20 tons per square inch to 70 tons per square inch, and (2) sintering the compacted part within the outer ring component to make the toroid part.
Dependencies are inferred from the claim text.