Conductor roll contour

Details Conductor roll contour Conductor roll contour

1982-03-15

1983-11-15

Williams, Howard S.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204206, C01B 2130, C25D 1700

Patent

active

044154259

ABSTRACT:
Conductor rolls used for masking one face of a metal strip while electro-treating the other face thereof, comprise an elastomeric-covered cylinder having a metallic contact ring in the center thereof for electrical contact with the strip being treated. To minimize high transfer current densities, the edges of these contact rings have been provided with a cantilevered flange overlying a portion of the elastomer. It has been found, due to differential thermal expansion, at operating temperature, of both the elastomer and the metal contact ring, that the cantilevered flange section of the contact ring is forced up to an excessive extent, resulting in high bending stresses generated in the strip at the region of the contact ring-elastomer interface. By providing a taper on the cantilever flange section to compensate for the difference in thermal expansion, bending stresses in the strip are reduced to insignificant values, thereby eliminating creases and scratches in the strip.

REFERENCES:
patent: 3483098 (1969-12-01), Kramer
patent: 3483113 (1969-12-01), Carter
patent: 3634223 (1972-01-01), Carter
patent: 4304653 (1981-12-01), Winand

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