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首页> 外文期刊>Applied Mathematical Modelling >Analysis of lateral metal flow-induced flatness deviations of rolled steel strip: Mathematical modeling and simulation experiments
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Analysis of lateral metal flow-induced flatness deviations of rolled steel strip: Mathematical modeling and simulation experiments

机译：侧向金属流动引起的轧制钢带平直度偏差的分析：数学建模和仿真实验

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Geometric dissimilarity between the thickness profile of the entry strip and the deformed roll gap is the main cause of flatness defects. However, the combination of the crown ratio and the lateral metal flow complicates the flatness defect mode, making it difficult to predict. A variety of rolled flatness defects may result, generally occurring as center waviness, edge waviness, M-mode waviness, and W-mode waviness. The effect of lateral metal flow on the flatness has rarely been considered or quantified in the traditional flatness model. To address this deficiency, an original mathematical model is proposed for computing the rolled flatness defects while accounting for lateral metal flow during the rolling process. The proposed analytical model was employed to compute the flatness deviations with and without lateral metal flow, and the flatness calculated results were compared with the numerical solutions provided by a three-dimensional finite element model. The influence of the lateral metal flow on the strip flatness distribution was clearly identified and explained. Finally, the effects of the reduction rate, entry thickness, and exit crown ratio on the flatness deviation and lateral metal flow are described and discussed. (C) 2019 Elsevier Inc. All rights reserved.
机译：入口钢带厚度轮廓和变形的辊缝之间的几何差异是造成平整度缺陷的主要原因。但是，凸度比和金属横向流动的组合使平坦度缺陷模式复杂化，难以预测。可能会产生各种轧制平整度缺陷，通常会出现为中心波纹，边缘波纹，M模式波纹和W模式波纹。传统的平面度模型很少考虑或量化侧向金属流动对平面度的影响。为了解决这一缺陷，提出了一种原始的数学模型，用于计算轧制平直度缺陷，同时考虑轧制过程中的横向金属流动。提出的解析模型用于计算有无横向金属流动时的平面度偏差，并将平面度计算结果与三维有限元模型提供的数值解进行比较。清楚地识别和解释了横向金属流对带钢平直度分布的影响。最后，描述并讨论了压下率，入口厚度和出口凸度比对平面度偏差和横向金属流动的影响。 （C）2019 Elsevier Inc.保留所有权利。

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