Process for preparing selectively stressed endless belts

Details Process for preparing selectively stressed endless belts Process for preparing selectively stressed endless belts

1991-12-03

1994-05-31

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

205 77, C25D 100

Patent

active

053166515

ABSTRACT:
An endless metal belt resistant to failure due to stress induced by bending contains an internal stress gradient of radially outward increasing compressive stress which opposes external stress applied to the belt. The belt can be made by an electroforming process. While electroforming, at least one operating parameter selected from bath temperature, current density, agitation, and stress reducer concentration is adjusted to cause the internal stress to gradually increase, compressively, from the radially inner surface of the belt to the radially outer surface of the belt. The internal stress preferably increases at a substantially constant rate and may range from about 160,000 psi tensile at the inner surface to about 120,000 psi compressive at the outer surface.

REFERENCES:
patent: 3963587 (1976-06-01), Kreckel
patent: 4501646 (1985-02-01), Herbert
patent: 4972204 (1990-11-01), Sexton
patent: 5131893 (1992-07-01), Herbert
patent: 5221458 (1993-06-01), Herbert et al.

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