| 摘要 |
<p>PURPOSE:To minimize charging pitch into a finishing mill by adding extracting temp. conditions of a rolled stock to decide the extracting time of the rolled stock from a heating furnace. CONSTITUTION:On a hot rolling line, the heating furnace 1, press 2, roughing mill 3, finishing mill 4 and coiler which is not shown are arranged in this order. About each rolled stock 5 during being in the heating furnace 1, by calculating the rolling schedule of the roughing mill 3 and the rolling schedule of the finishing mill 4 based on the sizes of thickness, length, etc., of each rolled stock 5, the prediction of transportation of each rolled stock 5 after it is extracted from the heating furnace 1 is executed and the extracting time from the heating furnace is decided. Next, the temp. deviation between the target temp. and the actual temp. for extracting the rolled stock from the heating furnace is determined and, when it is judged that the temp. deviation is larger than a prescribed value and the rolled stock as the object is in the overheated state, the extracting time that is calculated by a well-known means is corrected into the advanced state.</p> |
