Operational experience with VAL-Q strip: on-line system for controlling hot rolled strip mechanical properties

摘要

A quality control system was jointly developed by Voest-Alpine Industrieanlagenbau and Voest-Alpine Stahl, Linz. The system was installed at the 7-stand hot strip mill and allows accurate on-line prediction of the mechanical properties of hot rolled strip. The prediction model has been in continuous operation since mid-1997 and has proven to be both accurate and stable. Furthermore, the system offers comprehensive simulation possibilities that are extensively used by engineers for production, research and quality control. Extension of the system to perform fully automatic in4ine control of quality parameters is under development.