IMPROVING THE FLATNESS OF A ROLLED STRIP

System and method for improving the flatness of a rolled sheet or strip (102) by the application of differential cooling. A cooling agent can be selectively applied along the width (202) of the strip. More cooling can be applied to the edges of the strip, where tension is greatest, to increase tensi...

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Bibliographische Detailangaben
Hauptverfasser:	NELSON, PAUL DAVID, GAENSBAUER, DAVID ANTHONY, HOBBIS, ANDREW JAMES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	System and method for improving the flatness of a rolled sheet or strip (102) by the application of differential cooling. A cooling agent can be selectively applied along the width (202) of the strip. More cooling can be applied to the edges of the strip, where tension is greatest, to increase tension at the edges. The strip can be allowed to lengthen at these edges, which can improve flatness. In some embodiments, a closed loop flatness control system is used to measure the flatness of a strip and automatically adjust the differential cooling based on the measurement.