基于辊缝动力学的板带轧机垂直振动的研究

板形与板厚是衡量板带轧制成品几何精度的两大指标。而与这些指标直接相关的是轧机机座垂直方向的振动。本文将机座与轧件作为一个系统来研究 ,建立了基于辊缝动力学的 ,以分析板带轧机机座垂直振动对板形及板厚影响为目的辊缝动力学模型 ,提出了振动模态对板形及板厚影响的指标。得出的结论是 :板形与板厚控制的实质是辊缝的控制 ,在轧制状态下辊缝不仅与静力学因素有关 ,而且在很大程度上取决于辊缝动力学因素。本文所建立的模型考虑了阻尼因素及由辊缝动力学模型确定的非线性轧制力 P,使模型能更真实的模拟现场实际情况

A Study of the Vertical Vibration of the Plate and Strip Rolling Mill Based on the Gap Dynamics

The thickness and profile of the plate and strip are the two important indexs to measure the geometry precision of rolling product. What is relevant to indexes is the vertical vibration of the plate and strip rolling mill. This paper studies the mill and workpiece as a system, builds a model based on the roll gap dynamics for the vertical vibration of the mill, proposes the vibration mode targets affecting the thickness and profile, and draws the conclusion that the control of thickness and profile of plate is actually the control of roll gap. In the rolling situation, the roll gap is not only related to static mechanics, but also is related to roll gap dynamics to some extent. The model is established in consideration of the resistance factor and the roll force P calculated by nonlinear roll gap dynamics model. So this model can simulate the real situation in the field and optimize structure parameters of the mill more effectively.