23-09-2021 дата публикации
Номер: US20210291260A1
A tundish, wherein a steel passing hole () is provided at a lower portion of a gas-curtain weir refractory body (); an argon duct (), a gas chamber () and a gas-permeable brick () are connected to form a gas-curtain generating device, and the gas-curtain generating device is installed at the lower portion of the gas-curtain weir refractory body (); the gas-permeable brick () is provided in association with the position of the steel passing hole (), and a length of the gas-permeable brick is designed larger than a width of the steel passing hole (); and a gas-curtain weir plate () is provided in a tundish container, the gas-curtain weir refractory body () crosses the tundish container horizontally, and divides the tundish container into a first region and a second region. 1. A tundish , comprising a long water gap , a tundish container that is composed of a tundish refractory working layer and a tundish shell , and a submerged water gap , wherein the tundish also comprises a gas-curtain weir plate , the gas-curtain weir plate comprises a gas-curtain weir refractory body , a steel passing hole , a gas-permeable brick , a gas chamber , and an argon duct; the steel passing hole is provided at a lower portion of the gas-curtain weir refractory body , the argon duct is connected to the gas chamber , the gas chamber is connected to the gas-permeable brick to form a gas-curtain generating device , and the gas-curtain generating device is installed at the lower portion of the gas-curtain weir refractory body;the gas-permeable brick is provided in association with the position of the steel passing hole, and a length of the gas-permeable brick is designed larger than a width of the steel passing hole to provide a gas curtain that fully covers all liquid steel flowing to or flowing through the steel passing hole;the gas-curtain weir plate is provided in the tundish container, the gas-curtain weir refractory body crosses the tundish container horizontally, and divides the ...
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