CONTROL METHOD FOR PLATE THICKNESS BY HOT CONTINUOUS ROLLING MILL

摘要

PURPOSE: To provide a control method for a plate thickness by a hot continuous rolling mill by which the plate thickness can be controlled with a few errors even in the case of plural rolling stands. ;CONSTITUTION: In a control method for a plate thickness by a hot continuous rolling mill with three rolling stands or over, an intermediate plate thickness meter 10 is installed between arbitrary rolling stands before two stands or over from a final rolling stand 15. And, by finding previously a correlation between the deviation of the intermediate plate thickness of the tip part of a rolling stock 11, which is measured by the intermediate plate thickness meter 10 and the deviation of a plate thickness between rolling stands from and after it, the drawing down quantities of respective rolling stands are determined according to a correlation between the deviation of the intermediate plate thickness and the deviation of the plate thickness between the rolling stands from and after the intermediate plate thickness meter 10.;COPYRIGHT: (C)1996,JPO