Transactions of Materials and Heat Treatment

Title：Numerical simulation and process analysis on eleven-roll leveling process for plastic reinforced materials

Authors：

Unit：

KeyWords： leveling reduction amount numerical simulation residual stress flatness

ClassificationCode：TG306

year,vol(issue):pagenumber：2021,46(6):84-90

Abstract：

Taking the elastoplastic bilinear hardening model as the basic theory, the dynamic model of eleven-roll leveler was established by software ABAQUS. On the basis of the reduction plan with large deformation and small residual error, combining with the reduction plan of theoretical calculation and the process data of field test, the influences of different reduction plans on the residual stress and flatness of plate were studied, and the experimental verification was performed. The results show that the residual stress change in the length direction is greater than that in the width direction, and adjusting the reduction amount of the first roll has a more significant effect on the residual stress distribution in the length direction than the adjustment of intermediate roll, but it has little effect on the residual stress in the width direction. At the same time, the residual stress on the side of plate after leveling changes more drastically. Finally, through process analysis, it is determined that the Q690 steel with the original curvature ratio Co of 3.5 and the thickness of 35 mm has the best leveling accuracy. After leveling, the flatness is 2.4 mm·m-1, which conforms to the national standards and verifies the correctness of the model.

Funds：

2018年度泰山英才领军人才项目

作者简介：叶冠平（1996-），男，硕士研究生 E-mail：18279181041@163.com 通信作者：武凯（1972-），男，博士，教授 E-mail:wukai@njust.edu.cn

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