Casting in an exothermic reducing flame atmosphere

Details Casting in an exothermic reducing flame atmosphere Casting in an exothermic reducing flame atmosphere

B - Operations, Transporting

22

D

22/167, 22/51

B22D 11/16 (2006.01) B22D 11/06 (2006.01)

Patent

CA 1224324

ABSTRACT IMPROVED CASTING IN AN EXOTHERMIC REDUCING FLAME ATMOSPHERE An apparatus and method for casting metal strip include a moveable chill body having a quench surface thereon. A nozzle mechanism deposits a stream of molten metal onto a quenching region of the quench surface to form the strip, and a gas supply mechanism provides an initial gas mixture, which consists essentially of car- bon monoxide and oxygen. An ignition mechanism ignites the initial gas mixture to create an exothermic reaction which provides a low density, reducing flame atmosphere at a depletion region located substantially adjacent to and upstream from the quenching region. A control mechanism controls the initial gas mixture to produce an adjusted reducing flame atmosphere at the depletion region in which the adjusted reducing flame has a burnt gas composition that includes substantially no free oxygen.

507780

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