HOT ROLLING METHOD AND EQUIPMENT

摘要

A hot rolling method comprising controlling a process, which includes the welding, rolling and take-up of materials, in such a manner that the processing of both a preceding material and a following material finishes at a preset speed, by predictively calculating on the assumption that this process is evaluated by a preset speed pattern used after the materials have been extracted from a heating furnace the time required to carry out the process with respect to both the preceding material and following material, and extracting the following material from the heating furnace at the time which permits the following material to overtake the preceding material in a target position on a hot rolling line; and controlling a transfer speed of the following material in accordance with a position of a tail end of the preceding material and a speed of the same material in a section just before overtaking so as to eliminate a space between the tail end of the preceding material and a front end of the following material, whereby the welding of the materials in a traveling zone of a welding machine is normally completed by setting three parts, i.e. the tail end of the preceding material, front end of the following material and movable welding machine so that they have positional relation suitable for the welding of the materials in the target position on the hot rolling line.