四辊轧机轧制因素影响磨损的有限元分析

FEA of Abrasion on Four-Roller Milling Factor

轧制过程中,轧辊与被轧制金属材料之间接触应力较大,并承受周期性的应力应变。轧辊的表面特性会发生改变,产生磨损。轧辊与带钢之间的磨损会落破坏原始辊型,并直接影响板形控制精度及增加辊耗。对于轧制因素的调整,可以降低辊耗和节约生产成。首先分析了轧辊的磨损及影响因素,考虑轧辊辊系的弹塑性变形,基于有限元软件,建立了轧制力学模型以及四辊轧机有限元仿真模型。其次利用有限元法对轧辊的应力进行了仿真模拟,并从板宽、压下率等因素对工作辊磨损的影响,提出了降低轧辊失效的具体措施。

In the process of rolling, roll and rolling contact stress between metal material is larger, and periodic stress and strain. Can change, on the surface properties of roll wear. Roll wear will fall between strip and destroy the original roll shape, and directly affect the flatness control precision and increase the roll consumption. Adjustment for roiling factors, can reduce roll consumption and saving production. First analyzed the roll wear and impact factors of considering roll the elastic-plastic deformation of roll system, based on the finite element software, established the mechanics model and four high rolling mill finite element simulation model. Second using finite element method to simulation, the stress of the roller and the plate width and rate of pressure on the influence of work roll wear. puts forward ~nmo ~ns^o;~; J 11 r.,