（1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling， Yanshan University，Qinhuangdao 066004， Hebei， China 2. College of Mechanical Engineering， Yanshan University， Qinhuangdao 066004， Hebei， China）
Abstract：The work roll flattening has significant effect on the distribution of rolling pressure during cold ultra-thin strip rolling and temper rolling，thus，the conventional rolling force models are no longer applicable. To obtain accurate rolling force in shape and gauge control process for the ultra-thin strip rolling，Fleck proposed a new roll flattening model. In this paper，the experiment and finite element simulation were carried out to evaluate Fleck model. Workpieces with various thicknesses were rolled by using alloy steel rolls during the experiments. The approximate profile of the roll in the deformation zone was obtained by measuring the thicknesses of different workpiece positions by microscope. Experimental and finite element simulation results show that there was a clear neutral zone in the deformation zone with the decrease of the thickness of the workpiece. However，there is almost no elastic unloading zone in the neutral zone which was mentioned by Fleck. Thus，to simplify the rolling force model，the effect of no elastic zone could be ignorable for the calculation of rolling force.
肖 宏，任忠凯，刘 晓，余 超，顾勇飞. 极薄带轧制变形区轧辊压扁试验与有限元模拟[J]. 钢铁, 2017, 52(1): 38-42.
XIAO Hong，，REN Zhong-kai，，LIU Xiao，，YU Chao，，GU Yong-fei. Experiment and finite element simulation of roll flattening in deformation zone for ultra-thin strip rolling. Iron and Steel, 2017, 52(1): 38-42.
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2017, Vol. 52 
