| 摘要 |
<p>PURPOSE:To improve the controlling accuracy for a plate width by taking the variation of the plate width between stands, when tension to a stock to be rolled between the stands is varied, for the sum total of the variations of the respective plate thicknesses on the outlet part of the stand on an upperstream side and on the inlet part of the stand on a downstream side. CONSTITUTION:The measured values W5, W6 of plate widths by each width meter 1, 2 are read into a computing element 3 for tension variation. The computing element 3 for tension variation computes the tension variations DELTAt4, DELTAt5 in accordance with the measured values W5, W6 of the plate widths of each width meter 1, 2 and a plate width aimed value W5aim on the outlet side of a 5th stand F5 inputted from a setter 4, a plate width aimed value W6aim on the outlet side of a 6th stand F6 and influence coefficients alpha4, alpha55, alpha54 given by tension variation to the plate width. These are inputted respectively to a tension controller 5 and the tension controller 5 changes the respective tensions which is given to a strip by the respective tension applying devices A1, A2. As a result, the variation of the plate width caused on the outlet side of each stand which has made a disturbance conventionally in setting the tension variation is removed so that the controlling accuracy of the plate width can be improved.</p> |
