镁合金薄带双辊铸轧过程的数值模拟

发布时间：2018-02-01 15:29

  本文关键词： 双辊铸轧 镁合金 数值模拟 宏观传输 有限元法　出处：《东北大学学报(自然科学版)》2015年04期 　论文类型：期刊论文

【摘要】：基于立式薄带双辊铸轧工艺的特点,采用有限元法求解镁合金薄带双辊铸轧过程的三维宏观传输方程,并应用ANSYS软件的智能网格划分技术,实现了对铸轧过程中熔池内部温度场、速度场及凝固过程的耦合模拟.分析了铸轧速度及浇注温度等主要工艺参数对熔池内流场、温度场和凝固终了点的影响规律.研究结果表明,随着浇注温度和铸轧速度的增加,熔池出口处的温度升高,凝固终了点向熔池出口处移动.通过对模拟结果的讨论,给出了适合镁合金薄带铸轧过程的工艺参数:浇注温度为640~660℃,铸轧速度为20~30 m/min.
[Abstract]:Based on the characteristics of vertical thin strip twin-roll casting rolling process, finite element method was used to solve the three-dimensional macroscopic transmission equation of magnesium alloy strip twin-roll casting rolling process, and the intelligent meshing technology of ANSYS software was applied. The coupling simulation of temperature field, velocity field and solidification process in molten pool during casting and rolling process is realized, and the main technological parameters such as casting and rolling speed and pouring temperature are analyzed to the flow field in molten pool. The results show that with the increase of pouring temperature and casting speed, the temperature at the exit of molten pool increases. The final solidification point moves to the exit of the molten pool. Through the discussion of the simulation results, the technological parameters suitable for the casting and rolling process of magnesium alloy strip are given: the pouring temperature is 640 ~ 660 鈩，

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