Abstract:The thermal crown change of the work roll in cold rolling process is an important factor to determine the strip shape quality. The research and analysis of the thermal deformation of work roll and its influence on the strip shape is of great significance to improve strip quality. Taking the 1 450 mm tandem cold rolling production line of a plant as the research object, the two-dimensional thermal crown finite element simulation model and three-dimensional finite element rolling simulation model of No.4 stand and No.5 stand work rolls respectively were established by the large-scale finite element analysis software ANSYS and LS-DYNA. The two simulation models were combined to analyze the influence law of thermal crown change on the plate shape. The hot roll shape change process and its influence on the shape after the work roll putting on the machine were analyzed. The influence of the hot roll shape change caused by the change of rolling speed on the shape and the influence of emulsion temperature and edge preheating width on the shape were further analyzed, which provided a basis for the improvement of cold rolling shape quality in the future.
渠福泉, 李旭, 张宇峰, 李晓华, 李康, 秦秀珍. 冷轧工作辊热凸度及其对板形影响[J]. 中国冶金, 2022, 32(4): 84-93.
QU Fu-quan, LI Xu, ZHANG Yu-feng, LI Xiao-hua, LI Kang, QIN Xiu-zhen. Thermal crown of cold rolling work roll and its effect on strip shape[J]. China Metallurgy, 2022, 32(4): 84-93.
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