321paper冷轧机机型与板形调控能力分析

321paper 冷轧机机型与板形调控能力分析XU Jianyong*, LIN Xiuzhen*, HE Anrui**, ZHANG Qingdong**, JIANG Zhenglian*Baoshan Iron & Steel Co., Ltd., **University Of Science and Technology BeijingAbstract: Mill type is the first problem to be considered for the new building of tandem cold mill and shape control performance is one of the most important factors to choose the mill type of tandem cold mill. In this thesis, 5 items which are used to value the mill performance of shape control were defined, such as gap adjustment area, gap transversal stiffness, shape control efficacy, edge drop, and the control ability of roll bending. Additionally, fast finite element simulation models of several typical cold rolling mills which were popular in the world nowadays, for example, HC, CVC, DSR and PC, were established and their shape control performances were analyzed detailedly. Key Words: Cold rolling mill, Shape control, Finite element method1. IntroductionThe strip flatness is the most important quality index of cold rolling strip and it’s coating product. Because strip flatness affects the productivity, cost and product’s appearance of following industries like motorcar, electrical appliance, instrument, food cashing, and so on. In a word it affects the market competition of strip products. The flatness of strip used to make refrigerator must be lower than 2mm; and the center wave’s height of coating strip is limited below 0.25mm. And an excellent flatness is an important precondition for the stability of following strip procession. The velocity of modern CAPL is as high as 800m/min. Bad strip profile would bring strip buckling in furnace, and even strip-break. From the 70’s of last century, in order to satis...