热轧中碳宽带钢冷却过程横向弯曲变化规律的数值模拟

发布时间：2018-05-13 07:49

本文选题：热轧 + 中碳高强带钢　；参考：《钢铁》2017年05期

【摘要】：针对目前困扰热轧中碳高强度宽带钢生产的横向弯曲缺陷,使用有限元软件ABAQUS结合FORTRAN语言编写子程序,建立热轧带钢轧后冷却有限元模型。通过模型计算,分析带钢轧后冷却过程中上下表面的冷却不均以及带钢厚度对带钢横向弯曲的影响。研究结果表明,相同厚度情况下,带钢上下表面冷却不均程度越大,带钢横向弯曲程度越严重,上下表面相同冷却效率比的情况下,带钢越厚,带钢横向弯曲越严重。冷却过程中,受温度变化和相变的综合影响,带钢弯曲方向和大小会发生较大变化,且冷却过程中带钢弯曲量最大值远远大于冷却结束后横向弯曲量。
[Abstract]:Aiming at the transverse bending defects of hot rolled medium carbon high strength wide band steel, a finite element model of cooling after hot rolling strip was established by using finite element software ABAQUS and FORTRAN language to compile subprogram. Through the model calculation, the uneven cooling of the upper and lower surfaces and the influence of strip thickness on the transverse bending of strip during the cooling process after rolling are analyzed. The results show that under the same thickness, the greater the uneven cooling degree of the upper and lower surface of the strip, the more serious the transverse bending degree of the strip, and the more serious the transverse bending of the strip is under the condition of the same cooling efficiency ratio of the upper and lower surface. In the cooling process, the bending direction and size of the strip will change greatly due to the influence of temperature and phase transformation, and the maximum bending amount of the strip during cooling is much larger than the transverse bending after the end of cooling.
【作者单位】：北京科技大学高效轧制国家工程研究中心;
【基金】：国家自然科学基金资助项目(51674028,51404021)
【分类号】：TG335.56

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