纯铝双辊铸轧成型过程流固耦合分析

    Fluid-solid Coupling Analysis of Forming Process of Pure Aluminum Two-roll Casting and Rolling

    • 摘要: 纯铝双辊铸轧过程中辊速、换热系数和浇注温度分别影响着温度场以及铸轧变形区应力和应变的分布,利用有限元方法对其进行了流固耦合分析。通过实验验证了该模型的准确性,并确定了合理的铝板铸轧工艺。研究表明,随着辊速增大,出口温度升高,导致板内最大等效应力降低;随着轧辊与轧板间换热系数的增大,出口温度降低,导致板内最大等效应力升高;随着浇注温度增大,出口温度升高,板内最大等效应力减小;铸轧工艺参数对铸轧区应变分布影响不明显。

       

      Abstract: The temperature field and distribution of stress and strain in the deformation zone of pure aluminum two-roll casting and rolling is affected by roll speed, heat transfer coefficient and pouring temperature, respectively. The fluid-solid coupling analysis was carried out by finite element method. The accuracy of the model was verified by experiments, and a reasonable aluminum plate casting and rolling process was determined. The researches show that with the roll speed increases, the outlet temperature increases, which leads to the decrease of the maximum equal effective stress in the plate. With the increase of heat transfer coefficient between roll and rolling plate, the outlet temperature decreases,which leads to the increase of the maximum equivalent stress in the plate. With increases of the pouring temperature, the outlet temperature increases, and the maximum equivalent stress decreases. The influence of casting rolling process parameters on the strain distribution is not obvious.

       

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