Dispensing – Molten metal dispensing – Gaseous fluid engages molten metal
Patent
1984-05-24
1994-11-29
Rolla, Joseph J.
Dispensing
Molten metal dispensing
Gaseous fluid engages molten metal
222606, 164437, 266236, B22D 3700
Patent
active
053682084
ABSTRACT:
A sealing apparatus for shielding air from a path of molten steel in a laddle to a tundish in continuous metal casting facilities to prevent oxidation of the molten metal, the apparatus including a seal box lift mechanism mounted on a tundish body through a bracket and including a drive member and a lift rod member to be vertically moved up and down by the drive member; a seal box including an outer cylinder fixedly mounted on a tundish cover and extending into the tundish, and an inner cylinder telescopically fitted in the outer cylinder and connected to the lift rod member through a lever; a first seal member fixed at the upper end of the inner cylinder and pressed against a nozzle mounting surface of the laddle when the inner cylinder is lifted up by the lift rod member; a second seal member fixed on the outer cylinder to seal gap space between the outer and inner cylinders; and an inert gas inlet provided in the wall of the inner cylinder.
REFERENCES:
patent: 3554520 (1971-01-01), Grosko
patent: 3673039 (1972-06-01), Todd
patent: 4270595 (1981-06-01), Coward
patent: 4290589 (1981-09-01), Luhrsen et al.
patent: 4325502 (1982-04-01), Weaver
Kishino Takanobu
Nishimura Kouhachi
Bollinger David H.
Kabushiki Kaisha Kobe Seiko Sho
Rolla Joseph J.
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