Forged in bushing article and method of making
AssigneeMetaldyne Sintered Components, Inc.
InventorDale E. Wehler
Life of this patent
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Abstract
These forged articles are useful as connecting rods. The bushing is assembled during the forging operation of the powder metal connecting rod. This reduces the number of manufacturing operations required to process a powder metal article. The main components of this article are a sintered powder metal perform and preferably a bronze bushing. The bronze bushing is inserted in the bore of the sintered perform of a connecting rod and thereafter forged in during forging then heated to provide bonding between the bushing and connecting rod.
Claims26
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform, wherein the bushing is made of copper, aluminum, beryllium, zinc, alloys thereof or amalgams thereof;
- forging the sintered preform and bushing;
- and
- heating the forged preform and bushing to allow bonding between the perform and bushing thereby forming a forged article with a forged in bushing.
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform;
- forging the sintered preform and bushing;
- and
- heating the forged preform and bushing to allow bonding between the perform and bushing thereby forming a forged article with a forged in bushing
- wherein the forged article is an engine connecting rod having a bore through a small end portion,
- wherein the forged in bushing is in the bore of the small end portion.
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform wherein the bushing is a bronze bushing;
- forging the sintered preform and bushing;
- and
- heating the forged preform and bushing to allow bonding between the perform and bushing thereby forming a forged article with a forged in bushing.
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform;
- forging the sintered preform and bushing;
- and
- heating the forged preform and bushing to allow bonding between the preform and bushing thereby forming a forged article with a forged in bushing,
- wherein the forging is carried out at a temperature of above 1800° F., and
- wherein the forging is carried out at a pressure of about 60,000 psi.
A forged article having a bore therein and forged from metal powder with a non-ferrous bushing forged in the bore.
A forged connecting rod having a bore therein and forged from metal powder with a bronze bushing forged in the bore.
A sintered preform connecting rod having a bore therein with a bronze bushing disposed within the bore.
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform, wherein the bushing is made of copper, aluminum, beryllium, zinc, alloys thereof or amalgams thereof, and
- forging the sintered preform and bushing thereby forming a forged article with a forged in bushing.
A method for manufacturing a forged article from metal powder comprising the steps of:
- pressure molding powder metal into a green compact form having a bore therein;
- heating the green compact sufficiently to bond the metal particles together forming a sintered preform having a bore therein;
- inserting a bushing into the bore of the heated sintered preform;
- and
- forging the sintered preform and busing;
- wherein the forged article is an engine connecting rod having a bore through a small end portion;
- wherein the forged in bushing is in the bore of the small end portion.
Dependencies are inferred from the claim text.