In-mold flow control device and in-mold flow control method in thin slab casting

摘要

The in-mold flow control device for thin slab casting of steel is an in-mold flow control device used for thin slab casting of steel having a meniscus portion having a short side thickness of 150 mm or less and a casting width of 2 m or less, and is a DC magnetic field generation unit. And an immersion nozzle having a slit formed in the bottom so as to be connected to the bottom of the discharge hole and open to the outside, the discharge hole and the slit exist in the DC magnetic field band, and the magnetic flux in the DC magnetic field band. The density B (T) and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy the following equations (1) and (2). 0.35T ≤ B ≤ 1.0T ... (1) Equation L ≥ 0.06m ... (2) Equation