| 摘要 |
<p>PURPOSE:To improve the accuracy of controlling a coiling temp. by predicting the finishing outlet temp. of a rolled stock by using a heat transfer model, correcting an intended rolling speed pattern and changing an amt. of cooling water to be used in accordance with said pattern. CONSTITUTION:Thermometers 5a, 5b are provided on the inlet and outlet sides of finishing mill groups 1a-1e and a coiling thermometer 5c is disposed on the outlet side of a hot run table 2. A finishing outlet temp. control system 11 and a coiling temp. control system 12 which respectively store the heat transfer model and the intended rolling speed pattern are disposed in a control system 10. The finishing outlet temp. of the rolled stock M is predicted by using the heat transfer model. The intended rolling speed pattern is corrected when said temp. deviates from a target temp. range. The amt. of the cooling water to be used in a cooler group 2 is changed and adjusted in accordance with said pattern. Since the external disturbance of the coiling temp. control system 12 is thereby prevented, the accuracy of controlling the coiling temp. is improved.</p> |
