Permeable MgO nozzle

Details Permeable MgO nozzle Permeable MgO nozzle

1991-02-07

1992-03-31

Siedel, Richard K.

Dispensing

Molten metal dispensing

Gaseous fluid engages molten metal

164415, 164437, B22D 0000

Patent

active

051000350

ABSTRACT:
An immersion nozzle for containuous metal casting having an elongated nozzle body formed from a porous, gas permeable refractory material. The nozzle body has a conduit extending longitudinally therethrough and an inner surface which defines the conduit. The nozzle body also includes an outer surface defining a predetermined body profile and channels formed in the outer surface of the nozzle body. A metallic housing encases the nozzle body and has an inner surface dimensioned to substantially conform to the profile of the nozzle body. The housing is secured to the nozzle body by a refractory mortar which forms a rigid, relative air-tight layer between the housing and the nozzle body, wherein the channel means form internal passages in the nozzle. A port is provided on the housing in registry with the channels in the nozzle body. The port is connectable to a source of inert gas, which is operable to force the gas into the passages and into the porous refractory material.

REFERENCES:
patent: 4360190 (1982-11-01), Ato
patent: 4429816 (1984-02-01), Thrower
patent: 4579165 (1986-04-01), Kamei et al.
patent: 4588112 (1986-05-01), Kondo
patent: 4746038 (1988-03-01), Ohwada et al.
patent: 4779775 (1988-10-01), Kimura et al.

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