Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Post sintering operation
Patent
1997-07-03
1999-05-18
Jenkins, Daniel J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Post sintering operation
419 38, B22F3/12;3/24
Patent
active
059059397
ABSTRACT:
There is provided a connecting rod including a connecting rod body and a cap having excellent alignment properties, and a method of producing such a connecting rod. A connecting rod body and a cap are produced through the steps of molding green compacts respectively corresponding to the connecting rod body and the cap; sintering and unifying both the green compacts; forging the resultant sintered product in a mold; and fracturing the resultant forged product. The green compact corresponding to the cap and/or the green compact corresponding to the connecting rod body includes opposite circumferential end faces formed with one or more projection. A clearance c is formed between both circumferential end faces of the sintered product due to the projection. With this clearance c, both the circumferential end faces are formed with recesses and projections which are fitted to each other during the forging process and which are relatively large and thus have large biting amounts. During the fracturing process, the recesses and the projections are separated into two pieces.
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Ichikawa Jun-ichi
Ishijima Zenzo
Sakai Jun
Sasaki Syuji
Shikata Hideo
Hitachi Powdered Metals Co., Ltd
Honda Giken Kogyo Kabushiki Kaisha
Jenkins Daniel J.
Marmelstein Nikaido
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