【作者】 曾春； 熊智强；

【Author】 ZENG Chun~1,XIONG Zhi-qiang~2 (1.School of Logistics Engineering,Wuhan University of Technology,Wuhan,430063;2.Mechanical and Electrical School,wuhan university of science and technology,wuhan,430081)

【机构】 武汉理工大学物流工程学院； 武汉科技大学机械自动化学院；

【摘要】 在平整机工作辊水平动力学模型和轧制变形区入口油膜厚度数学模型的基础上,建立了平整机轧制力和动态刚度随工作辊水平颤振速度变化的数学模型,通过数值仿真验证了某平整机水平摩擦颤振速度对平整带钢振纹的影响。分析表明:由负阻尼引起的工作辊水平自激振动与平整润滑界面相互耦合,引起平整机垂直系统产生自激振动,从而在带钢表面产生相应波长的振纹。更多还原

【Abstract】 On the basis of working roll’s horizon dynamics model and oil film thickness model at the entrance of rolling deform area,a mathematics model of temper rolling mill’s rolling force and dynamic rigidity change with working roll’s horizonal chattering velocity developed.Validated the influence of horizonal friction chattering velocity to steel strip chatter mark of strip steel produced by one temper rolling mill by the use of numerical simulation. The analysis result shows that,under the activate of vertical exciting force,working roll’s horizonal self-excited vibration coupled with lubricate interface would cause self-exciting vibration of vertical system of temper rolling mill,thus result in chatter mark with relevant wavelength on the surface of strip steel.更多还原