| 摘要 |
<p>A method for improving the flatness of metal plates, and a device for embodying this method, by effectively preventing steel plate undulations which are produced in the widthwise edge of a metal plate when the latter reaches ordinary temperature after completion of hot rolling via a cooling process. The metal plate flatness controlling method comprises the steps of measuring the surface temperatures in the widthwise edge and central portion of the metal plate between finish rolling mills, which are tandem mills, or at the inlet and/or outlet of a finish rolling mill, which is a reversing mill, or after completion of hot rolling or after passage through a hot straightening machine, controlling the heating temperature for the widthwise edge and central portion of the metal plate on the basis of the measured surface temperatures, cooling the metal plate after finish rolling, whereby the distribution of surface temperatures becomes flat.</p> |
