摘要
针对四辊轧机工作过程中可能出现的上下左右不对称问题,在大量的现场试验与理论研究的基础上,充分结合四辊轧机的设备与非常态轧制的工艺特点,从辊系弹性变形模型入手,充分考虑到四辊轧机非常态轧制过程中的上下与左右的不对称性,建立一套适合于四辊轧机非常态轧制时的板形模型,编制相应的板形分析与控制软件,利用该模型及软件不但可以定量预报出带材跑偏、不对称辊型、轧制中心线与轧辊中心线不重合、不对称弯辊、不对称窜辊等非常态因素单独或综合作用对轧机成品板形的影响,而且可以定量预报出对称弯辊、对称窜辊、倾辊等常态因素对成品板形的影响。该模型及软件已经被应用到梅钢1420双机架平整机组的板形分析与控制,有效地提高了机组的成品板形质量,板形封闭率从项目开展前的2.5%降低到目前的0.5%以内,给机组创造了较大的经济效益,具有进一步推广应用的价值。
In order to deal with the problem of up-down and left-right asymmetry that may occur up in the four-roll mill work process, on the basis of a large number of field trials and theoretical study and fully integrating the process characteristics of the equipment and asymmetric state rolling of the four-roll mill and considering the asymmetry of up-down and left-right, the model of elastic deformation of the roll system is used to establish a set of plate-shaped model which suits for four-roU mill when it works. The corresponding analysis and control soitware of the strip shape is also drawn up. It can quantitative forecast not only effects caused alone or comprehensively by asymmetry factors such as strip drift, asymmetric roller type, rolling centerline and roll not coincidence, asymmetric centerline bending roll, asymmetric motion of roll, but also effects caused alone or comprehensively by symmetrical factors such as symmetric bending roll, symmetric motion of roll and tilting roller on the influence of the finished product plate shape. The model and software is directly applied to the analysis and control of the shape of Meigang 1420 double frame fiat plate to improve the shape quality of finished products. Now the closed rate of strip shape has reduced from 2.5% before to less than 0.5% .It has created unit large economic benefits and has further application value.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2012年第20期77-82,共6页
Journal of Mechanical Engineering
基金
河北省自然科学基金(E2011203019)
河北省教育厅第二批百名优秀创新人才支持计划(CPRC018)资助项目
关键词
四辊轧机
非常态轧制
辊系弹性变形
板形
Four-high mill Asymmetric state rolling Elastic deformation of the roll system Shape
