| 摘要 |
<p>PURPOSE:To improve the efficiency and yield by calculating the downtime due to welding work on the inlet side of a rolling mill, setting and controlling the optimum rolling speed. CONSTITUTION:The tip and the rear end of materials 8 for a metallic strip are connected by welding treatment, sent out to a looper 5 and the materials for the metallic strip which are stored in the looper are continuously fed to the cold rolling mill 6 and rolled. The material information of the materials 8 for the metallic strip are tracked before welding, the welding time required for welding treatment composed of plural treatments is calculated based on this information, the rolling speed of the cold rolling mill 6 is determined from the amount of storage in the looper 5 at that time and the welding time and the rolling speed of the rolling mill is controlled based on this rolling speed. Whenever each treatment of the welding treatment of the materials 8 for the metallic strip is completed, the rolling speed of the cold rolling mill is determined from the amount of storage in the looper 5 and the time required for the rest of the welding treatment at that time and the rolling speed of the rolling mill is controlled based on this rolling speed.</p> |
