摘要
辊间接触压力分布是影响宽厚板板形质量和轧辊使用寿命的重要因素,为了获得均匀的辊间压力分布,以4 100mm宽厚板四辊轧机为对象,考虑轧件弹塑性变形和辊系弹性变形耦合作用,采用弹塑性热-力耦合非线性有限元方法,数值模拟分析了宽厚板轧制过程的辊间接触压力分布规律,并通过仿真分析,对支承辊辊型及其边部卸载曲线进行了选型和优化改进,获得了以二次曲线为辊凸度和抛物线为辊肩部卸载曲线的辊形,延长了轧辊的使用寿命,改善了宽厚板的板型质量。
Contact pressure and its＇ distribution mode between backup roll and work roll are critical to flatness and service life of rollers.In order to investigate the pressure distribution law and make it more uniform,a thermal-deformation coupled finite element model was setup for wide-thick plate rolling process in a 4 100 mm mill based on elastic-plastic nonlinear finite element method,and the deformation of both hot plate and rolls was coupled in this model.From the numerical simulation results,the contact pressure distribution and roll gap shape are presented,by which,the backup roll profile curve is optimized to be quadratic and its＇ shoulder form is improved to be parabolic curve.The service life of backup roll and flatness of plate are improved with the new roll profile.
出处
《钢铁》
CAS
CSCD
北大核心
2013年第4期51-54,共4页
Iron and Steel
