离心铸造钛合金熔体充型流动物理模拟相似理论及实验研究

借助相似物理模拟理论,研究离心铸造钛合金熔体充型流动物理模拟相似准则。并采用相似物理模拟的方法,研究离心力场下钛合金熔体充型流动过程中,熔体流动的变化规律。实验结果表明:离心力场下物理模拟钛合金熔体充型流动时,同时满足Cn准则和雷诺准则;模拟流体充型流动时,沿着横浇道后壁进行充型;流体的自由液面是以转轴为圆心的规则圆弧面;流体横截面面积随着旋转速度和充型长度的增加相应减小;转速越高,在同一时间内,充填速度和长度越小。

Physical Simulation Similar Theory and Experiment during Centrifugal Casting Ti Alloy Melts Filling Flow

Based on the similar physical simulation theory, we investigated the physical simulation similar regulation during Ti alloy melt filling flow in centrifugal field. And by means of similar physical simulation method, the variation of flow was studied during Ti alloy melt filling flow in centrifugal field. The results show that the melt flow meets both Cn criterion and Reynolds criterion in the centrifugal field upon filling, model fluid fill the mould along the back wall of cross gate, the free surface of fluid is a regular curved surface in the spindle centers, the cross section of fluid decreases with increasing of rotation speed and filling length. At the same time, the higher the rotation speed, the smaller the filling speed and length