HC轧机平直度调节手段对各次平直度分量的影响规律研究

现代轧机一般配备多种平直度调节手段，各种调节手段之间存在着一定的耦合关系，为分析各种平直度调节手段对各次平直度分量的影响规律，采用分割模型影响函数法和条元变分法建立HC轧机的平直度计算模型，利用该模型计算倾辊、工作辊弯辊、工作辊非对称弯辊和中间辊横移4种调节手段对1次、2次、3次和4次平直度分量的影响系数，分析发现，倾辊和工作辊非对称弯辊对平直度的影响规律类似，主要影响1次和3次平直度分量，并且对1次分量的影响程度要大于对3次分量的影响程度；工作辊弯辊和中间辊横移主要影响2次和4次平直度分量，并且对2次分量的影响程度要大于对4次分量的影响程度，该结果系统地揭示各种调节手段对各次平直度分量的影响规律，为平直度在线控制模型的建立、实现提供理论基础。

Research on Effective Rules of Flatness Regulating Means on Various Order Flatness Components for HC Mill

There are many flatness regulating means in modern mills and these means have coupling relations with each other reciprocally. In order to analyse the effective rules of various flatness regulating means on various order flatness components, taking HC mill for example and using the tilting roll, the bending work roll, asymmetry the bending work roll and the axial shifting intermediate roll as flatness regulating means, the effective coefficients of various regulating means on the linear, quadratic, cubic and biquadratic flatness components are calculated by theory model built by the partition model effective function method and the strip element variation method. It is indicated that the effective rules of the tilting roll and the asymmetry bending work roll on flatness are similar and they mainly affect the linear and cubic flatness components, where the effect extent on the linear flatness component is bigger than that on the cubic flatness component and The bending work roll and the axial shifting intermediate roll mainly affect the quadratic and biquadratic flatness components where the effect extent on the quadratic flatness component is bigger than that on the biquadratic flatness component. The result opens out the effective rules of various regulating means on various order components and provides the theory foundation for building on-line flatness control model.