Casting in an exothermic reduction atmosphere

B - Operations – Transporting – 22 – D

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22/56

B22D 11/10 (2006.01) B22D 11/06 (2006.01)

Patent

CA 1214619

ABSTRACT CASTING IN AN EXOTHERMIC REDUCTION ATMOSPHERE An apparatus and method for casting metal strip include a moving chill body that has a quench surface. A nozzle mechanism deposits a stream of molten metal on a quenching region of the quench surface to form the strip. The nozzle mechanism has an exit portion with a nozzle orifice. A depletion mechanism supplies a reducing gas to a depletion region located adjacent to and upstream from the quenching region. The reducing gas reacts exothermically to lower the density provide a low density reducing atmosphere within the depletion and substantially prevent formation of gas pockets in the strip.

450621

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