2 250 mm CVC四辊热轧机轧制带钢金属的横向流动

张玉涛; 杨光辉; 张高尚; 韩月林

doi:10.13228/j.boyuan.issn0449-749x.20180324

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钢铁 ›› 2019, Vol. 54 ›› Issue (3) : 56-62. DOI: 10.13228/j.boyuan.issn0449-749x.20180324

压力加工

2 250 mm CVC四辊热轧机轧制带钢金属的横向流动

张玉涛，杨光辉，张高尚，韩月林

作者信息 +

Metal transverse flow of strips rolled by 2 250 mm CVC 4-high hot rolling mill

张玉涛，杨光辉，张高尚，韩月林

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摘要

为了提高2 250 mm CVC四辊热轧机板形控制精度，使用非线性有限元软件MSC Marc建立了动态刚性轧辊-弹塑性轧件耦合模型，分析了带钢金属的横向流动规律。为提高精度，采用静态弹性辊系-弹塑性轧件耦合模型得到有载辊缝形状作为动态仿真的初始辊形。分析发现，金属横向流动值随着距轧件中心距离的增大逐渐增大；摩擦力是影响不同厚度间金属横向流动差别的重要因素；金属的横向流动量与压下率、弯辊力、来料凸度以及窜辊量呈线性关系。为了定量分析各因素与横向流动的关系，建立了各因素的影响系数函数，并进行正交试验及方差分析判断交互关系，最后建立插值计算模型，并通过仿真结果验证了其正确性，为相应轧机的在线板形控制提供参考。

Abstract

To improve the flatness control precision of the 2 250 mm CVC 4-high hot rolling mill， the nonlinear software MSC Marc was used to establish the dynamic rigid roll-elastoplastic strip coupling model. In order to improve the accuracy of the simulation，the shape of the loaded roll gap was calculated with the static elastic rolls-elastoplastic strip coupling model as the initial roll shape of the dynamic simulation. It was found that the metal transverse flow of strips gradually increased with the increasing of the distance from the center of strips by analysis. Friction is an important factor which affects the metal transverse flow among different thicknesses of metal. The metal comprehensive transverse flow of strips was linear with the reduction rate，the roll bending force，the initial strip crown and the work roll shifting. The influence coefficient function of each factor was established for the quantitative analysis and orthogonal experiments were tested to judge their interaction relations through the variance analysis. Finally，an interpolation calculation model of metal transverse flow of strips was established and its correctness was verified by simulation results. An important reference for the online shape control of the corresponding rolling mill is provided.

关键词

2 250 mm CVC热轧机 / 带钢 / 金属横向流动 / 正交试验 / 计算模型

Key words

2 250 mm CVC hot rolling mill / strip steel / metal transverse flow / orthogonal experiment / calculation model

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张玉涛, 杨光辉, 张高尚, 等. 2 250 mm CVC四辊热轧机轧制带钢金属的横向流动[J]. 钢铁, 2019, 54(3): 56-62 https://doi.org/10.13228/j.boyuan.issn0449-749x.20180324

ZHANG Yu-tao, YANG Guang-hui, ZHANG Gao-shang, et al. Metal transverse flow of strips rolled by 2 250 mm CVC 4-high hot rolling mill[J]. Iron and Steel, 2019, 54(3): 56-62 https://doi.org/10.13228/j.boyuan.issn0449-749x.20180324

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