20辊森吉米尔轧机辊系静压力学计算与分析

Statics Calculation and Analysis on A Roll System of 20-High Sendzimir Mill

在对轧机辊系结构稳定性和板形控制的研究中,辊间接触参数的分布和相互关系是其研究的基础和关键。以某硅钢厂ZR22BS-42型轧机辊系为研究对象,建立20辊森吉米尔轧机辊系力学模型,并对各轧辊进行受力分析。采用MFC(Microsoft Foundation Classes)搭建程序界面,首先计算了辊系静压状态下辊间接触力、接触力方向角以及各辊合力的大小,再对其分布关系进行了具体分析。利用有限元软件进行辊间接触应力仿真计算,通过对模型的有效简化,设置12个接触对,根据静压过程的受力特性确定辊系的载荷约束。最后,对比辊间接触的应力云图,定量确定了各辊间的接触应力大小,并分析了应力变化的趋势及相互关系。实验结果有利于指导轧机的压下和辊型调整。

The distribution and mutual relationship of contact parameters between rolls are the foundation and key issue in the research of the structure stability and strip shape control for the mill roll system The mechanical models of the roll system for the 20-high sendzimir mill were established based on the research object of ZR-22BS-42 sendzimir mill in a silicon steel factory,and exertdforces of each roll were analyzed .Through the program interface built by MFC, the contact force between the rolls and the direction angle of the contact force and the resultant force of each roll were calculated in the static pressure condition first.Then its distribution relationships were analysed concretely. The contact stress between rolls was calculated by using finite element simulation software, and 12 contact pairs were set up through the effective model simplification, the constraints and loads of roll system were determined according to the mechanical characteristics in the static pressure process. Finally, the contact stress nephograms between rolls were compared, the contact stresses between rolls were obtained, and the trend and mutual relationships of stress changes were analysed. Experimental results show that they were quite useful for the adjustment of the press down and roll type in the mill.