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US 4,145,798 AGranted
Forging recessed configurations on a body member
AssigneeFederal-Mogul Corporation
InventorMyron C. Sarnes
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AssigneeFederal-Mogul Corporation
InventorMyron C. Sarnes
Estimating the term…
A novel and improved method of forging preselected recessed surfaces in a member is disclosed which comprises the steps of adding a suitable lubricant material to at least a slave or primary preform member wherein the lubricant material is sufficient to prevent welding between the noted preforms during the forging operation. Moreover, the method envisions the step of joining the slave preform to the primary body preform member, followed by forging the joined together preforms such that the primary preform member is deformed to an extent generally complementary to a portion of the configuration of the slave preform, such that the forged primary preform has formed therein a shaped recess generally complementary to at least a portion of the configuration of the slave preform. It is contemplated that the forged slave and primary preforms are quenched subsequent to forging. Thereafter, the method contemplates removing the quenched slave preform from the primary preform.
A method of forging preselected recessed surfaces in a member is disclosed which comprises the steps of adding a suitable lubricant material to at least a slave or primary preform member wherein the lubricant material is sufficient to prevent welding between the noted preforms during forging;
The method of forging a preselected recessed surface and a finished bearing member which comprises the steps of adding a suitable lubricant material to both slave and primary preform members wherein the slave preform is a briquetted and sintered powder metal part which is quench crackable when forged and quenched and the primary preform is a briquetted, sintered, and carburized metallic part, and wherein the lubricant is sufficient to prevent welding between the noted preforms during forging, press-fitting the slave preform to the primary body preform member, followed by forging the press-fit preforms such that the primary preform member is deformed to an extent generally complementary to a portion of the configuration of the slave preform, such that the forged primary preform has formed therein a shaped recess generally complementary to at least a portion of the configuration of the slave preform;
A method of forging a preselected recessed surface and a finished bearing member which comprises the steps of coating a slave and a primary preform with a suitable lubricant material which prevents welding between the preforms during forging, the slave preform is a briquetted, sintered, and carburized powder metal part which is quench crackable when forged and quenched, said slave preform having a generally annular configuration, and the primary preform is a briquetted, sintered and carburized powder metal part having a generally annular configuration with a radially disposed flange, press-fitting the slave preform to the primary body preform member such that the slave preform rests on the flange, followed by forging the press-fit preforms such that the primary preform member is deformed to an extent generally complementary to a portion of the configuration of the slave preform, such that the forged primary preform has formed therein a shaped recess generally complementary to at least a portion of the configuration of the slave preform;
Dependencies are inferred from the claim text.