| 摘要 |
PURPOSE:To restrain accurately the generation of sheet camber, by providing a centering means in the width direction of a material to be rolled in a rolling mill, and controlling the difference between the gaps at both ends of the mill at the outside of the set position of said means basing on the detection of the positions of both side edges of the material. CONSTITUTION:An arithmetic controlling part 6 calculates the man value (x) (the central position C in the width direction of a material M to be rolled) of the position (xa), (xb) in the width direction of both side edges of the material M inputted from contact rolls 4a, 4b. The material M is restricted so that its position in the width direction, i.e. its central part in the width direction is positioned on the points A, B respectively by using as a centering means, edger rolls 21a, 21b of a vertical mill 2 placed at the inlet side of a horizontal mill 1 and guide rolls 3a, 3b placed at the outlet side. Accordingly, sheet camber is not generated when the position C of material M at the set position of a pair of rolls 4 is on the center line Y0-Y0 that means (x)=Z, and the generation of sheet camber is estimated when (x)not equal to Z. Then the difference between the gaps at both ends of the rolling rolls is controlled by setting so as to make (x)=Z. |
