CONTROL METHOD FOR HOT ROLLING PLATE WIDTH

• Main Authors: FUJIYAMA KENJI, TAUCHI HIROAKI, WATANABE TOSHIHARU, SETO YASUNARI
• Format: Patent
• Language: English
• Published: 06.07.1987
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PURPOSE:To control the top of an initial controlling part with high accuracy and quickly by obtaining previously an waiting opening before biting on a vertical roll and the timing to open and to shut to change said opening into the opening at biting, and by setting these into a control device for the opening of vertical roll. CONSTITUTION:The opening of the vertical roll between the control objective sections of the plate width is calculated by an opening pattern arithmetic part 10 from measured width data, the target width after a vertical rolling and a characteristic equation of the width rolling reduction model corresponding to the longitudinal position of a material to be rolled. Then, using a time schedule given from a moving pattern predicting part 8, a a necessary speed pattern of the opening and shutting the vertical roll is obtained. Based on this necessary speed pattern of the opening and shutting, the opening of the vertical roll at the time of starting to control opening and shutting i.e., the waiting opening is set by a preset part 1 to a control device 13 of an opening/ shutting device 14 of the vertical roll. Meanwhile, by a tracking part 9, the position of the material 1 to be rolled is informed to the opening pattern setting part 12 of the vertical roll to send a control starting command to the control device 13 when the start timing signal of the opening and shutting from the tracking part 9 is arrived.