Method of forming by cold worked powdered metal forged parts
AssigneeBorg-Warner Automotive, Inc.
InventorsJack E. Pederson, Hayward P. Summers
Life of this patent
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Abstract
A method for manufacturing metal by a cold worked powdered metal forging process is disclosed. A certain amount of a powdered metal is measured out and then compacted into a briquette or other compact. The briquette is then sintered to form a preform. After sintering, the preform is then cold worked to increase its strength. After cold working, the preform is forged to form the desired part. The resultant part has improved fatigue life, surface finish, and metallurgical characteristics.
Claims7
A method for forming forgings for cam surfaces in one-way clutch races, comprising the steps of:
- providing a powdered metal;
- compacting said powdered metal;
- sintering said compacted powdered metal to form a preform;
- cold working said preform to improve the strength of said preform;
- and
- forging said preform into a clutch race having a desired shape with desired specifications.
A method for forming cam surface in one-way clutch races, comprising the steps of:
- providing powdered metal compact;
- sintering said powdered metal compact to form a preform;
- cold working said preform by roller burnishing;
- and
- forging said preform into said clutch race wherein said clutch race has improved strength and surface finish.
Dependencies are inferred from the claim text.