ROLLING CONTROL DEVICE, ROLLING CONTROL METHOD, AND ROLLING CONTROL PROGRAM

摘要

[Problem] To control fluctuations in coil diameter caused by local changes in sheet thickness as a result of a necessity for opening the roll gap without rolling in part of the material being rolled. [Solution] This rolling control method rolls the material being rolled, takes the same up onto a tension reel, and controls the rolling mill such that rolling is avoided by releasing the rolls for a welding point (30) where rolling should be avoided. The rolling control method is characterized by the winding contour during uptake of the welding point (30) onto the tension reel being acquired and the roll release timing for releasing the rolls being acquired such that the length in the feed direction for the part for which rolling is to be avoided is a length corresponding to the winding contour. The rolling control method is further characterized by the timing when the welding point (30) arrives at the rolls being recognized and control being carried out such that the rolls are released based on the roll release timing and the arrival timing.