Patent ID: 9669438
Date: 2017-06-06
CPC Classifications: B21B,B21C

Claim:
1. A rolling monitoring method to monitor a rolling status of a steel sheet that is rolled by a plurality of rolling stands each including a pair of rolling mills, the rolling monitoring method comprising: imaging the steel sheet entering the pair of rolling mills of the rolling stand located on a downstream side in a rolling direction, with an imaging unit disposed between adjacent rolling stands so as to satisfy the following equation (1), on an upstream side in the rolling direction of the rolling stand located on the downstream side in the rolling direction, in a central portion in a width direction of the steel sheet in an area in which the steel sheet is able to be conveyed; and displaying, on a display apparatus, an image of the steel sheet entering the pair of rolling mills, the image being obtained by the imaging unit: wherein L represents a distance in the rolling direction between the rolling stand located on the downstream side in the rolling direction and the imaging unit, α represents a horizontal viewing angle of the imaging unit, and W wherein, when it is determined that detection conditions for detecting a specific rolling status of the steel sheet are satisfied as a result of an image analysis of the image of the steel sheet, a warning is issued by displaying of the warning content on said display apparatus or by a sound.