Zero-defect strategy in the cold rolling industry

The present article presents the major defect possibilities in the production of cold-rolled steel strip as well as the place where they arise, causes, and the measures to detect and avoid them. Although the processes in the steel plants, hot rolling mills and cold rolling mills are subject to continuous improvement, it is not 100% possible to exclude the possibility of residual defects. The examinations available according to the state of the art in production processes to improve the process and exclude defect parts cannot reliably detect all defects, but they reduce the risk of defects substantially For the production of cold-rolled steel strip there remains a residual risk, which must be considered in the further processing as a function of the requirements for the end product.