METHOD FOR CONTROLLING WIDTH OF HOT ROLLED STEEL PLATE

摘要

PURPOSE:To provide a steel plate width controlling method for a hot rolled steel plate excellent in yield through a simple means without measuring temperature. CONSTITUTION:When a steel plate 1 is rolled in a hot state as pairing a horizontal mill 3 with a vertical rolling mill 2 equipped on the front stage of this horizontal rolling mill 3, an inlet side sheet width to the vertical rolling mill 2 is estimated by the by rolling load and the roll opening in the vertical rolling mill 2 and the roll opening of the vertical rolling mill 2 is controlled by using an influence coefficient to the outlet side plate width from the estimated inlet side plate width and an influence coefficient to the outlet side plate width from the vertical roll opening to control the outlet side plate width of the horizontal rolling mill to a desired value.