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为了准确地控制工艺参数 ,获得表面光洁、高质量的连铸铜单晶 ,采用数值分析方法研究铜单晶连铸时固液界面的位置和形状 .发现铸型温度 (TM)、连铸速度 (v)、冷却位置 (L)和熔体温度 (TL)影响固液界面的位置和形状 ,并且铜单晶连铸时固液界面向熔体呈凸出形状 .当固液界面位于铸型内距出口端 2～ 3 m m时 ,可获得表面光洁、晶体取向度小于 10°的连铸铜单晶 .为了获得高质量的单晶 ,固 -液界面面必须平滑 ,甚至是平界面 .计算结果与实验结果吻合很好 ,可用数值分析方法确定连铸铜单晶的工艺参数 ,为铜单晶连铸提供理论依据 .
In order to control the process parameters accurately and obtain the smooth and high quality continuous casting single crystal copper, the position and shape of the solid-liquid interface during the single-crystal copper continuous casting process were studied by numerical analysis.It was found that the mold temperature (TM) (v), cooling position (L) and melt temperature (TL) affect the position and shape of the solid-liquid interface, and the solid-liquid interface of copper single crystal continuous casting to the melt was convex shape when the solid-liquid interface is located in the mold In the case of 2 to 3 mm from the exit end, a continuous casting single crystal of copper with a smooth surface and a crystal orientation of less than 10 ° can be obtained. In order to obtain high quality single crystals, the solid-liquid interface must be smooth and even flat. The results are in good agreement with the experimental results. The process parameters of continuous casting copper single crystal can be determined by numerical analysis and provide the theoretical basis for continuous casting of copper single crystal.