METHOD FOR CONTROLLING MILL PACING IN HOT ROLLING LINE

PURPOSE:To improve the productive efficiency of a line by conforming an extracting pitch of a stock to be rolled from a heating furnace to a rolling pitch and performing an automatic extraction at the optimum pitch. CONSTITUTION:The time required for precedeng and succeeding materials to pass through all stages from heating furnace 1 to a coiler 4 is predicted and calculated based on a preset rolling schedule and a carrier pattern. The time necessary for the material S to be rolled to advance from the extraction from the heating furnace to arrival at each equipment is predicted and calculated. A succeeding material is extracted and controlled so that the shortest intermediate pitch can be prepared for an equipment having the largest value among the shortest intermediate pitch in all equipments. After the stock to be rolled passes each equipment, the rolling speed and the carrier speed are synchronized with the passing of the stock to be rolled through each equipment and controlled in sequence so that the shortest intermediate pitch possiblle to realize is set for the equipment having the largest value among the shortest intermediate pitches in each equipment in the downstream. The control result is learned and reflected on the decision of an extracting time of the stock to be rolled next the succeeding stock. In this way, the efficiency of rolling and the quality of the product in the rolling line are improved.