Thickness control of direct cast strip

B - Operations – Transporting – 22 – D

Patent

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22/167, 22/52

B22D 11/06 (2006.01)

Patent

CA 1324719

THICKNESS CONTROL OF DIRECT CAST STRIP ABSTRACT A smooth roll skimmer 36 may be used in the casting of strip 34 by the melt drag process to provide gauge control and a smooth upper surface. Liquid metal 32 is cast on a moving chilled substrate 33 where it solidi- fies to a strip. The skimmer 36 is positioned above the substrate 33 and at a fixed gap therefrom by convenient means, e.g., by a rolling spacer 37 between the casting surface and the roll skimmer. The roll skimmer is not chilled and is not used to solidify the liquid. It meters and smooths the liquid prior to solidification on the substrate. A parting agent may be used on the roll skimmer to prevent sticking and to reduce heat transfer. A carbo- naceous soot from a partially combusted hydrocarbon fuel is a useful parting agent.

592871

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