Analysis and Control of Effect of Slab Deviation on Camber in Rough Rolling
WANG Hai-yu1, YANG Quan1, WANG Xiao-chen1, CHEN Yu-feng1, DONG Li-jie2, ZHANG Xi-bang3
1. National Engineering Research Center of Flat Rolling Equipment， University of Science and Technology Beijing，Beijing 100083， China 2. Shougang Qianan Iron and Steel Co.， Ltd.， Qianan 064404， Hebei， China 3. Shougang Research Institute of Technology， Beijing 100041， China
Abstract：For the problem of slab camber in rough rolling of a conventional hot rolling, the static coupling model of roll and slab was firstly established by using ABAQUS/Standard and the quantitative effect of entry slab deviation factor of the different entry thickness, width, reduction, temperature difference on both sides and initial work roll contour on existing slab wedge was calculated. Meanwhile, the work roll contour after the static model was obtained. Then, in the same conditions of entry slab deviation factor, the dynamic simulation model established by ABAQUS/Explicit simulated the phenomenon of slab camber, which adopted the work roll contour of static model calculation, and further calculated quantitatively effect of entry slab deviation factor of the different entry thickness, width, reduction, temperature difference on both sides and initial work roll contour on exit slab camber. Based on the above calculation results, the opening gap margin of side guide and initial work roll contour of rough rolling was optimized to enhance the alignment during the course of rolling. The centerline deviation values which do not meet the standard rate declined from 6.51% to 2.93%, and the wedge hit rate of products was improved to 89% through using the above method. Thus, the above method to improve the phenomenon of slab camber achieved remarkable results and greatly improved the quality of products.
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2014, Vol. 49 
