APPARATUS FOR CONTROLLING A BENDING AND A LEVEL OF STRIP IN HOT MILL PROCESS

摘要

To provide an apparatus for controlling skewness and deflection leveling of strip in hot rolling process, the apparatus capable of leveling the deflection or skewness of strip by promptly and accurately detecting deflection or skewness generated from strip threaded at a high speed within a short time. In an apparatus for controlling skewness and deflection leveling of strip(1) in hot rolling process having a plurality of rolling stands(24-1¾¬24-7) comprising side guides(23) installed at the input side of a rolling mill, and AGC(automatic gap control) cylinders for controlling a roll gap between drive side and work side of the rolling mill, the apparatus comprises: a first skewness detection camera(31) for photographing strip threaded in front of a first rolling stand(24-1); a skewness amount detection means(33) for calculating skewness extent of a top part of strip to be inputted by processing images of the first skewness detection camera; a side guide setup setting means(34) for resetting position of the side guides based on the skewness extent detected in the skewness amount detection means; a side guide driving means(35) for moving the side guides to positions set in the side guide setup setting means; an indication means consisted of roll gap up down push buttons of reference sides per rolling stands to impress signals of pushed buttons to the deflection control part; a deflection control part(36) for calculating a roll gap control amount of the first rolling stand for deflection prevention from the skewness extent of the top part of strip by receiving an output signal of the skewness amount detection means and calculating a roll gap control amount for deflection prevention per rolling stands according to manual up/down instructions after leading strip into a second rolling stand(24-2); and an AGC cylinder driving means(37) for driving respective AGC cylinders of the work side and the drive side of a relevant rolling stand using the roll gap control amount set in the deflection control part.