Metal deforming – With cleaning – descaling – or lubrication of work or product – Lubricating
Patent
1989-03-08
1991-04-16
Combs, E. Michael
Metal deforming
With cleaning, descaling, or lubrication of work or product
Lubricating
72358, 72352, B21J 300, B21C 2332, B21K 100
Patent
active
050072668
ABSTRACT:
A billet is successively cold worked into a product such as a countershaft, an outer race for a constant-velocity joint, or the like by forming a chemically converted lubricating coating on a surface of the billet, forging the billet into an intermediate product at a temperature below a transformation temperature of the billet, covering a surface of said intermediate product with lubricating oil in a die cavity in a die assembly, and forging the intermdiate product at a temperature below the transformation temperature and before the intermediate product gains a predetermined hardness due to age hardening resulting from the first forging step.
REFERENCES:
patent: 4586365 (1986-05-01), Henkelmann
Imai Hitoshi
Meguro Haruo
Nishiuchi Shohachi
Ohta Shigeo
Burt Pamela S.
Carrier Joseph P.
Combs E. Michael
Honda Giken Kogyo Kabushiki Kaisha
Weiner Irving M.
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