工程科学学报2017，Vol.39Issue(12)：1859-1865,7.DOI:10.13374/j.issn2095-9389.2017.12.012
热轧金属横向流动规律及其对板形的影响
Transverse flow law of metals and its effect on the shape of a steel strip
摘要
Abstract
The transverse flow law of metals is very important for calculating the shape of steel strips during hot rolling. A metal elastic-plastic deformation model was developed using a general finite element software, ABAQUS. The calculation cost can be signifi-cantly reduced by imposing the transverse uniformity of the longitudinal displacement of the strip at the end face during steady rolling. The effect of factors on the transverse flow of metals and the effect of the transverse flow of metals on the shape of steel strips were ana-lyzed using the developed model. Simulation results show that the effect of the friction condition of the contact interface on transverse flow is negligible. Moreover, during hot tandem rolling of wide steel strips, under the condition of constant unit crown, the variation of the width of the steel strip and fluctuation range of the mean front and back tension stresses do not affect the transverse flow and shape of metals. Further, the transverse flow of metals varies with the reduction ratio, which results in a trend toward the middle wave of the strip shape with the increase in the reduction ratio. It also varies with the similarity of the symmetric and asymmetric profiles and sig-nificantly reduces the effect of the change of profile similarity on the shape of the steel strip. A metal transverse flow prediction model is developed via the multivariate nonlinear regression method for online control, which lays the necessary foundation for strip shape reg-ulation during hot rolling.关键词
热轧/横向流动/弹塑性有限元/板形/预测模型Key words
hot rolling/transverse flow/elastic-plastic finite element model/shape/prediction model分类
矿业与冶金引用本文复制引用
柴箫君,张杰,李洪波,周一中,马珩皞,张鹏武..热轧金属横向流动规律及其对板形的影响[J].工程科学学报,2017,39(12):1859-1865,7.基金项目
国家十二五科技支撑计划资助项目(2015BAF30B01) （2015BAF30B01）
中央高校基本科研业务费专项资金资助项目(FRF-BR-16-025A) （FRF-BR-16-025A）
