| 摘要 |
<p>PURPOSE:To make the correction of sheet camber possible without performing a large-scale modification of equipment by measuring the camber of rolled stock on the inlet side or outlet side of rolling mill and controlling independently the right and left lubrication pressure of oil-film bearings of back-up rolls. CONSTITUTION:The sheet camber of rolled stock 4 during rolling is measured on the inlet side or outlet side with a camber measuring device 3 and the target difference of opening degree between the right and left rolls that is necessary to correct the camber is calculated on the basis of the measured value with a target oil pressure arithmetic device 5. Based on this arithmetic result, each of hydraulic pumps 7 is controlled with an oil pressure controller 6 and the right and left lubrication pressures of the oil-film bearings 21 of the back-up rolls 2 are independently adjusted. The sheet camber is corrected by the rolling of the next pass. This method can be applied to a rolling mill which isn't provided with a hydraulic rolling-down mechanism without modifying its rolling- down device.</p> |
