| 摘要 |
<p>PURPOSE:To effectively control the end camber even in the case without the temperature difference of the upper surfaces in the end camber control where the lower surface of the end part of the rolled stock is cooled during the hot rolling. CONSTITUTION:In a hot rolling line provided on the rolling mill inlet side with a water cooling device to execute the water cooling of the lower surface of the rolled stock a means to calculate the temperature in the respective positions in the thickness direction of the rolled stock, and a means to obtain the reduction of the temperature of the lower surface due to the lower surface cooling, when the end camber is executed to cool the lower surface of the end part of the rolled stock during the rolling operation, the lower surface cooling is applied in the temperature range where the temperature of the lower surface of the end part of the rolled stock in the rolling after recuperation when the lower surface cooling is executed reaches or exceeds the Ac3 point.</p> |
