Influence of slab chamfer on spread and improvement of width control model in rough rolling
SU Lan1,SONG Yong2,ZHENG Yong-gang2,GAO Zhi-gang2
(1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China 2. Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:The mould with chamfered corner can improve high temperature ductility at continuous casting slab corner in straightening section,and significantly reduce the occurrence of transverse crack. However,the chamfering of the continuous casting slab has a significant effect on the spread during rough rolling. The slab deformation finite element model of rough rolling process was used to study the influence of chamfering side length and shape on the spread during rough rolling. The results show that the larger the chamfering side length,the dog bone spread is smaller produced by the same width reduction,and the natural spread is smaller produced by the horizontal rolling. The chamfering angle had no significant effect on the spread. A modified formula with chamfering parameters was presented. The accuracy of the modified spread prediction model is improved obviously for the continuous casting slab with chamfered corners on base of the comparison with the measured value and the calculated value using the new original spread model.
苏 岚,宋 勇,郑永刚,高志刚. 连铸坯倒角对粗轧宽展的影响及宽度模型改进[J]. , 2018, 53(6): 70-75.
SU Lan,SONG Yong,ZHENG Yong-gang,GAO Zhi-gang. Influence of slab chamfer on spread and improvement of width control model in rough rolling. Iron and Steel, 2018, 53(6): 70-75.
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