| 摘要 |
<p>PURPOSE:To allow to control an abnormality of plate thickness to the minimum by comparing the statistical moment of the exit side of each rolling stand of the normal time with the abnormal time generated of the plate thickness, and extracting the rolling stand expressing that the plate thickness variance of the exit side of the above among each rolling stand is a same state with the plate variance of the exit side of the final rolling stand. CONSTITUTION:At the generating time of the abnormality of the plate thickness, the statistical moment of the variance range of the plate thickness with the plate thickness measuring device 3 of the exit side of each rolling stand 1 is calculated with the arithmetic processing and deciding device 5. These are compared with the statistical moment calculated at the normal time of the plate thickness by every rolling stand 1. The rolling stand 1 to generate the abnormality of the plate thickness can be identified by extracting the rolling stand expressing the same state with the plate thickness variance of the exit side of each rolling stand 1. Therefore, the rolling stand to generate the abnormality of the plate thickness can be accurately identified and diagnosed.</p> |
