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针对“长径比”较大的六辊UCM轧机轧制过程中存在工作辊水平挠曲影响板形控制精度的问题,充分考虑到六辊轧机设备与工艺特点,在研究了由于工作辊水平挠曲而引起的辊间接触状态及应力状态变化机理的基础上,建立了一套适合于大“长径比”的六辊轧机的板形模型,并以某钢厂典型规格产品为例,定量分析了长径比、张力差等因素对工作辊水平挠曲及板形的影响,同时比较了考虑工作辊水平挠度与不考虑工作辊水平挠度两种情况下弯辊与窜辊对六辊轧机的板形控制能力。将本模型应用到某钢铁厂450六辊可逆轧机,并编制出相应的板形预报软件,有效地解决了以往板形预报不准的问题。
In view of the problem that the horizontal deflection of the work roll affects the precision of the plate shape control in the rolling process of the larger six-roller UCM rolling mill, taking full consideration of the characteristics of the equipment and the process of the six-high rolling mill, Based on the contact state between rolls and the change mechanism of stress state caused by horizontal deflection, a set of plate shape model suitable for six-high mill with large aspect ratio was established, As an example, the effects of length-diameter ratio and tension difference on the horizontal deflection and plate shape of the work roll are quantitatively analyzed. In addition, the relationship between the bending roll and the traverse roll is compared in considering both the horizontal deflection of the work roll and the horizontal deflection of the work roll Shape control of six-high mill. The model was applied to a 450 steel six-roll reversible rolling mill and a corresponding flatness forecasting software was compiled, which effectively solved the problem of inaccurate flatness forecasting.