| 摘要 |
PROBLEM TO BE SOLVED: To prevent the meandering of a steel plate in a hot-rolling and to produce the steel plate excellent in the precision of the plate thickness when the steel plate is produced with an HDR process or a DHCR process. SOLUTION: In a method for producing the steel plate with the HDR process or the DHCR process from a high temperature cast slab 1 produced with a continuous caster, spraying edging amounts in a secondary cooling zone 5 of the continuous caster are independently controlled at both sides in the width direction of the cast slab. Or, heating amounts at both sides in the width direction of the cast slab with a heating means for compensating the cast slab temperature, arranged between the continuous caster and a hot-rolling mill, are independently controlled at both sides in the width direction of the cast slab. Or, the spraying edging amounts in the secondary cooling zone of the continuous caster, are independently controlled at both sides in the width direction of the cast slab and also, the heating amounts at both sides in the width direction of the cast slab in the heating means for compensating the cast slab temperature, arranged between the continuous caster and the hot-rolling mill, are independently controlled at both sides in the width direction of the cast slab.
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