| 摘要 |
<p>PURPOSE:To provide a method for detecting the eccentricity of a backup roll, by which the roll eccentricity is directly detected, and a method for removing such roll eccentricity. CONSTITUTION:In a four-high rolling mill in which a pair of upper and lower work rolls 1, 2 are combined with a pair of upper and lower backup rolls 3, 4, range finders 10, 11, 12, 13 are attached to the roll chocks 3a, 3b, 4a, 4b of the backup rolls 3, 4, and meantime, rotation angle detectors 8, 9 are attached to the backup rolls 3, 4. Synchronously with the rotation phase angle of the backup rolls 3, 4 which is detected by these rotation angle detectors 8, 9, a distance to the roll surface of the work rolls 1, 2 is measured, and by adjusting the roll spaces by changing the oil position of the hydraulic screw-down device 7 of the upper and lower work rolls 3, 4, in accordance with the measured value of this distance, the roll eccentricity of the backup rolls 3, 4 is removed.</p> |
