HEAT-RETAINING MATERIAL FOR MOLTEN STEEL SURFACE, AND CONTINUOUS CASTING METHOD FOR STEEL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a heat-retaining material capable of surely preventing contamination of molten steel, which is caused by air oxidation and reaction of a heat-retaining material; and to provide a continuous casting method for obtaining cast slab excellent in cleanliness.

SOLUTION: A heat-retaining material for a molten steel surface has ≤10 mass% SiO2content, has 0.5-2.0 CaO/Al2O3mass ratio, and contains Ti. A continuous casting method for steel adds the above heat-retaining material for a molten steel surface onto the molten steel surface in a tundish.

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