Method for producing metallic, non-rotationally symmetrical...

Details Method for producing metallic, non-rotationally symmetrical... Method for producing metallic, non-rotationally symmetrical...

2005-08-30

2005-08-30

Yee, Deborah (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S593000, C148S909000, C148S651000, C148S649000

Reexamination Certificate

active

06936119

ABSTRACT:
The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting from a hot-rolled pipe from which individual portions are severed, mechanically machined and subsequently hardened and tempered. Ring blanks of equal width are severed from the pipe and are mechanically machined on all sides, and the non-rotationally symmetric shape is produced by cold forming, the pipe or the severed ring blank having a structure suitable for cold forming.

REFERENCES:
patent: 3927450 (1975-12-01), Sommer et al.
patent: 5424028 (1995-06-01), Maloney et al.
patent: 5958158 (1999-09-01), Kron et al.
patent: WO 96/27460 (1996-09-01), None
patent: WO 99/07495 (1999-02-01), None
D.N. Hawkins, “Warm Working of Steels”, Elsevier Science Publishers B.V., pp. 5-21, 1985.

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