冷轧宽带钢拉伸矫直机工作辊磨损机理研究

Research on Work Roll Abrasion in Stretcher Leveller of Wide Cold Strip

针对酸轧联合机组中拉伸矫直机工作辊磨损快、使用寿命偏短等问题进行了理论分析与仿真研究。结合现场热轧带钢来料及工作辊磨损特征,初步推测带钢浪形是引起工作辊异常磨损的主要原因,通过推导边浪带钢延伸率产生的力学机理,验证了浪形带钢对工作辊的切削作用。最后,通过建立有限元模型和工作辊磨损影响因素分析,验证了推测的正确性。

Some practical problems in the pickling line and tandem cold mill were researched according to theo retical analysis and FEM simulation, including the severe abrasion and short lifetime of work roll in stretcher leveller. Combining with shape of hot rolled strip and the wear characteristics of work roll, this paper prelimi nary conjecture strip shape was the main reason causing abnormal abrasion of work roll and by the derivation of elongation of edge wave strip, the cutting effect of work roll caused by wave strip was verified. Finally, ac cording to the FEM simulation model of wave strip and analysis of influencing factors of abrasion, the correct ness of conjecture was verified.