End Heavy-Reduction Method for Plate Rolling Process
HU Xian-lei1， ZENG Qing-liang1,2， DING Jing-guo1
1. State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang 110819, Liaoning, China 2. ?No.2?Rolling?Mill?Factory, Anyang?Iron?and?Steel?Group, Anyang?455004, Henan, China
Abstract：To enhance reduction in pass is of significance to improve performances of thick plates. By analyzing the change of torsion in each rolling pass, it is known that the peak torsion at biting-in phase of front end is the critical factor which limits the reduction in pass. Based on the change rules of rolling torque at steady phase of the whole rolling process, end heavy-reduction method was put forward, which means that the reduction in pass can be properly increased at the plate end for forward rolling pass to form wedge or ladder shape, then the reduction in pass of full-length can be increased at the subsequent inverse rolling pass because the front end of plate is thinner. The amplifying range of reduction in pass was determined by the relationship of rolling torsion to reduction in pass. The method can effectively increase the core deformability of thick plate without reforming the rolling equipments, so it is suitable for application in plate mill.
收稿日期: 2014-05-13
出版日期: 2014-12-02
引用本文:
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HU Xian-lei， ZENG Qing-liang， DING Jing-guo. End Heavy-Reduction Method for Plate Rolling Process. Iron and Steel, 2014, 49(12): 54-58.
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2014, Vol. 49 
