초록 ▼

An apparatus and method for casting metal strip includes 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 cons

An apparatus and method for casting metal strip includes 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 carbon 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.

대표청구항 ▼

An apparatus for casting metal strip, comprising: a. a moveable chill body having a quench surface thereon; b. nozzle means for depositing a stream of molten metal on a quenching region of said surface to form said strip; c. gas supply means for providing an initial gas mixture, which consists essen

An apparatus for casting metal strip, comprising: a. a moveable chill body having a quench surface thereon; b. nozzle means for depositing a stream of molten metal on a quenching region of said surface to form said strip; c. gas supply means for providing an initial gas mixture, which consists essentially of carbon monoxide and oxygen gases; d. ignition means for igniting said 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 said quenching region; and e. control means for controlling said initial gas mixture to produce an adjusted reducing flame atmosphere at said depletion region, said adjusted reducing flame having a burnt gas composition which includes substantially no free oxygen, said control means comprising: (i) temperature sensing means for sensing flame temperature; and (ii) adjustment means for adjusting said control means to provide a casting regime in which a relative increase in the volume percent of carbon monoxide supplied within said initial gas mixture produces a corresponding, relative decrease in said flame temperature.