Abstract
Molten steel is solidified in the mold of a continuous casting process after refining. A tundish and an immersion nozzle are installed upstream of the mold. Nonmetallic inclusions and fine bubbles still remaining in the molten steel are designed to be removed in the tundish. The immersion nozzle equipped with a sliding gate is used for controlling the molten steel flow rate and induce uniform molten steel flow in the mold. Mold powder is continuously supplied on the meniscus of the mold for lubrication and so on. Many problems however arise in the continuous casting process. The most serious problem is entrapment of mold powder into the molten steel flow in the mold. The quality of steel products is significantly lowered due to the entrapment. Details of the problems and solution methods will be explained in this chapter.
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