Continuous casting tundish, method for continuously casting steel, and weir

A continuous casting tundish comprising:

• a reservoir that stores supplied molten steel, wherein the reservoir comprises:
• one or more molten steel outlets that allow the molten steel to exit therethrough, and
• a weir having a hollow cylindrical shape located at an upstream side of the molten steel from the one or more molten steel outlets, the weir comprising:
• a bottom;
• a wall rising from the bottom;
• an eave provided at an end of the wall, the eave covering a periphery of the wall and facing the bottom;
• and
• a gas supply unit that supplies an inert gas to an interior space enclosed by the wall and the bottom, the gas supply unit comprising:
• a porous body that includes pores in an entirety of the porous body;
• a support that supports the porous body, the support being provided on the wall;
• and
• a pipe that allows the inert gas to be delivered therethrough, the pipe being provided in the wall between the support and the bottom.

A weir that is configured to be provided in a continuous casting tundish and the weir having a hollow cylindrical shape, the weir comprising:

• a bottom;
• a wall rising from the bottom;
• an eave provided at an end of the wall, the eave covering a periphery of the wall and facing the bottom;
• and
• a gas supply unit that supplies an inert gas to an interior space enclosed by the wall and the bottom, the gas supply unit comprising:
• a porous body that includes pores in an entirety of the porous body;
• a support that supports the porous body, the support being provided on the wall;
• and
• a pipe that allows the inert gas to be delivered therethrough, the pipe being provided in the wall between the support and the bottom.