锻压技术

CSP热连轧机垂直振动建模分析

英文标题：Simulation and analysis on vertical vibration of CSP hot strip mill

作者：吴炳胜李运强吴继民

关键词：CSP热连轧机垂直振动仿真 MATLAB

分类号：

出版年,卷(期):页码：2014,39(1):91-94

摘要：

针对邯钢连铸连轧厂CSP热连轧生产线因轧机垂直振动影响带钢质量的问题，建立F3轧机垂直振动模型，将轧机简化为质点质量与弹簧刚度，根据能量守恒原则计算出轧机简化模型中的质量和刚度。并以MATLAB 7.0软件辅助运算，对其垂直振动的固有频率和响应特性进行分析，得出轧机在第3阶和第6阶固有频率的振动信号的输入下容易引发自激振动，第2阶和第4阶固有频率的信号的输入使轧机刚度降低，第5阶固有频率的振动则使板材出现明暗相间的振纹，由此提出了提高轧机刚度和避开固有频率等措施来提高板材质量。

Aimed at the problem of bad quality that vertical vibration of rolling mill affects the quality of strip, a model of F3 was established. In this model,the F3 rolling mill was simplified as weight of mass point and spring stiffness which were calculated by principle of conservation of energy. With the help of MATLAB 7.0，the natural frequency and the response of characteristic on the vertical vibration of rolling mill were analyzed. The conclusion shows that the third and sixth order of inherent frequency vibration can easily trigger self-excited vibration, and the second and fourth order of inherent frequency vertical vibration can decrease the stiffness of rolling mill, and the fifth order of inherent frequency vertical vibration can lead to the vibration ripples of white ripple alternate with the dark one. Then, the suggestions were put forward to improve the stiffness of rolling mill and avoid the inherent frequency of rolling mill.

基金项目：

河北省自然科学基金资助项目（E2013402030）

吴炳胜（1956-），男，硕士，教授

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