双辊铸轧铝合金中分流块对温度场影响的数值模拟研究

文章采用有限元方法,在大型通用有限元分析软件ANSYS中建立双辊轧制模拟的三维模型。重点研究铸嘴型腔中不同分流块的数目及分布对温度场、出口温度和出口速度的影响,以及对不同工艺条件下凝固行为的分析。研究结果表明,铝熔体在单个分流块的作用下分布更加均衡,避免了宽度方向上温差过大以及流动过程中出现较大的波动,其中板带表面和心部的出口温度、出口速度均匀性对于提高铸轧铝合金板带的质量有很大影响。实验结果为初步的,为提高铸轧板带质量提供理论和技术支撑。

Numerical Simulation Study on Influence of Twin-Roll Casting and Rolling Aluminum Alloy Shunt Block on Temperature Field

In this paper,a three-dimensional model of twin-roll casting process simulation is established using ANSYS software.The influence of the number and distribution of different shunt blocks in the nozzle cavity on the temperature field,outlet temperature and outlet velocity is studied,and the solidification behavior under different process conditions is analyzed.The research results show that the distribution of liquid aluminum is more balanced under the action of a single shunt block,which avoids the excessive temperature difference in the width direction and the larger fluctuation in the flow process,and the outlet temperature and outlet velocity uniformity of the surface and the core of the strip are of great help to improve the quality of casting strip to provide theoretical and technical support.