METHOD FOR MANUFACTURING HOT-ROLLED STEEL STRIP

摘要

PROBLEM TO BE SOLVED: To obtain a hot-rolled steel strip with good dimensional accuracy by reducing wedges or cambers during hot rolling using roll gap measured values measured with a roll gap measuring device; to prevent drawings or flaws during rolling; and accordingly to efficiently manufacture the hot-rolled steel strip having excellent quality with high yield.

SOLUTION: Roll gaps at an operation side and a drive side of rolling mill work rolls 1a, 1b are measured by the roll gap measuring device A during hot rolling. The levelling control of the rolling mill work rolls is carried out to allow a ratio of the roll gaps at operation side and those at the drive side to be a target value.

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