New Control Concept for ESP Thin-Gauge Rolling Improves Thickness Quality

摘要

Hot rolling thin gauges without cold rolling reduces production costs tremendously. With Arvedi ESP (Endless Strip Production) lines achieving exit thickness down to 0.6 mm, the requirements for tension and thickness control of finishing mills have increased. A new control concept for hot rolling thin gauges with existing instrumentation is based on the cold rolling control concept successfully used in tandem cold rolling mills. The concept is based on fast roll gap change to control entry strip tension. Results from the Arvedi ESP No. 4 line at Rizhao Iron and Steel Co. have shown excellent strip tension and thickness performance.