Continuous casting equipment and continuous casting method used for thin slab casting of steel

摘要

The continuous casting equipment used for this thin slab casting includes a mold for molten steel casting, a dipping nozzle that supplies molten steel into the mold, and an electromagnetic stirrer that can apply a swirling flow on the surface of the molten steel in the mold. _{The thickness of the copper plate on the long side wall is D Cu} (mm), the thickness of the slab is T (mm), and the frequency of the electromagnetic stirrer is satisfied so as to satisfy the following equations (1) -a and (1) -b. f (Hz), the electric conductivity σ (S / m) of the molten steel, and the electric conductivity σ _Cu (S / m) of the copper plate on the long side wall are adjusted. D _Cu <√ (2 / σ _Cu ωμ) (1) -a √ (1 / 2σωμ) -7 : vacuum magnetic permeability (N / A ² ).