Cold rolling a contour in metal rings

Details Cold rolling a contour in metal rings Cold rolling a contour in metal rings

1975-10-24

1976-12-28

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With modification or control of temperature of work, tool or...

72105, B21H 106

Patent

active

039994163

ABSTRACT:
A cold metal ring is greatly expanded in radial diameter and simultaneously contoured to a desired cross-sectional shape by successively rolling the ring between selected pairs of roll dies. If necessary, the ring may be annealed between successive cold rolling operations sufficiently to permit movement of ring material without fracturing the ring. Thereafter, the rolled ring may be expanded to a precise radial diameter utilizing a precision expander. Dimensional and contour control of the ring is comparable to that attainable by machining.

REFERENCES:
patent: 2925003 (1960-02-01), McMullen et al.
patent: 3029667 (1962-04-01), Sporck
patent: 3078745 (1963-02-01), Erdelyi
patent: 3795125 (1974-03-01), Laing et al.
Metals Handbook, 8th Ed., vol. 5, Forging and Casting, American Society for Metals, pp. 108-109.

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