| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for controlling a rolling operation, which method and apparatus can carry out a highly accurate control of the edge drop while suppressing surface defects caused by a roll shift. <P>SOLUTION: In a six-high rolling mill, the highly accurate control of the edge drop is carried out by combining a working roll shift and an intermediate roll shift. In addition, a shift oscillation and the control of the edge drop by shifting the intermediate roll are carried out during the rolling operation of the working roll. Further, when the amount of the edge drop cannot be fully controlled by the control of the edge drop by shifting the intermediate roll, the control of the edge drop is carried out by shifting the working roll. By this method, the deviation of the edge drop can be controlled to a minimum while suppressing the generation of the defects on the surface of a strip to be rolled as much as possible. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
