Automatic Roll Mark Detector Improves Cold Rolling Performance

摘要

This paper introduces a new innovation, an automatic roll mark detector, designed to save cold rolling mills from costly roll mark defects. The solution is an on-line installation into the exits of cold mills to automatically inspect every coil for roll marks - even for non-visible roll marks, which require manual chalking. The system alarms the operators from the first affected coil. Operators can take corrective actions without delay with the help of the images the detector displays in the operator pulpit human-machine interface. Records from a full-sized industrial pilot show major savings in downgrading costs and more full-speed rolling time since detector handover in late 2015. Furthermore, better reassignment for the fewer affected coils, higher-scoring customer key performance indicators, and many more cost benefits are experienced thanks to keeping the rolling operation more process-focused.