| 摘要 |
<p>PURPOSE:To prevent fluctuation of the thickness, width, shape and sheet crown by controlling the temp. distribution of a steel strip which is entered into a rolling mill. CONSTITUTION:Using inserting position L0, dimensions of slab and dimensions at the final stage of roughing, a 1st skid position of a rough bar is specified and error is corrected by the load value of F1. In the case AGC control is turned off and the positions of the screws of F1 and F2 are fixed, load and temp. are contrary to each other. In the skid part, the max. value of load is shown at the min. point of temp. By detecting that, the accurate position of skid is specified and an initial estimated value is corrected. Based on that data, the high temp. part of the steel strip which is running through the rolling mill is cooled with cooling water. Then, the quality of strip is improved and improvement of efficiency of line is realized by reducing temp. deviation on the outlet side of the rolling mill caused by the temp. distribution of rolling mill that is generated in a heating furnace.</p> |
