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为掌握1 800 mm CSP轧机的板形调控特性,以某1 800 mm CSP轧机为研究对象,建立了不同机架的有限元模型。利用有限元模型分析了不同带钢宽度下的弯辊力与窜辊对带钢板廓的影响,计算出上、中、下游机架的板形调控特性,得出当前中游机架板形调控能力最强,上游次之,下游最弱,并且板形控制能力随着带钢宽度的减小而减小。根据弯辊与窜辊在当前板形控制中所占比例,得出CVC窜辊是当前凸度控制的主要手段。对现场实际窜辊数据进行分析,得出上游机架凸度控制能力不足,中游机架凸度控制能力偏大,同时,通过对不同宽度带钢窜辊数据的分析得出轧制窄带钢时更易出现凸度控制能力不足的情况。现场数据与有限元仿真结果相互验证,研究结论可以为现场的辊形改进提供较好的理论分析基础。
In order to grasp the shape control characteristics of a 1 800 mm CSP mill, a finite element model of different stands was established with a 1 800 mm CSP mill as the research object. The finite element model was used to analyze the influence of the bending force and the traverse roller on the profile of the strip at different strip widths. The shape control characteristics of the upper, middle and lower racks were calculated. The strongest, the second highest, the weakest downstream, and the plate control ability decreases as the strip width decreases. According to the proportion of bending and traversing rollers in the current shape control, it is concluded that CVC traversing is the main method of current crown control. The analysis of the actual channeling roller data shows that the controllability of the upstream frame crown is insufficient and the crown control capability of the middle frame is too large. At the same time, by analyzing the data of the channeling rollers with different widths, More prone to crown control capacity of the situation. The field data and the finite element simulation results verify each other. The research conclusion can provide a good theoretical basis for the improvement of on-site roll shape.