| 摘要 |
PURPOSE:To correct the local strain of a material to be rolled, by making the set value of the flow rate of coolant oil shunting from respective valves branched at a roll part coincident with the whole flow rate of the coolant calculated basing on the detected value of a shape in the width direction of the material. CONSTITUTION:A shape signal S1 outputted from a shape detector 3 of a material to be rolled is fed to a necessary flow rate calculating means 5 through an input interface circuit 4 to calculate a necessary coolant flow rat V1 thereby inputting the flow rate V1 to an arithmetic device 6a. Next, the device 6a sets the flow rate of the coolant injecting from respective valves 10-1-10-N so that it coincides with the necessary flow rate V1 of the coolant, basing on respective coolant valves 10-1-10-N, the necessary flow rate V1 of the coolant, a shunting rate alpha1 of the coolant oil injecting from respective coolant valves 10-1-10-N, and the equiation I . |
