Filling mode and regularity of vertical centrifugal casting process of titanium alloy in thin-walled cylinder cavity

摘要

The mold filling process of titanium alloy in a thin-walled cylinder cavity under vertical centrifugalcasting process was studied by means of the hydraulic simulation experiments. Results show that the filling modeof the melt in the cylinder cavity varies with casting wall-thickness. When the casting wall-thickness is less than orequal to the thickness of the first layer during the filling process, the melts fill the cavity from the bottom to the top.When the casting wall-thickness is greater than the thickness of the first layer during the filling process, the meltsfirst fill the largest radius parts of the cavity with a certain thickness of the first layer from the bottom to the top ofthe cavity, and then they fill the cavity from the larger radius part to the smaller radius part. The melt filling abilityincreases with the increment of the mold rotational speed and the pouring temperature. In another aspect, themelt filling ability rises with the decrement of the melt viscosity, and the melt with the better filling ability is prone tofill the cylinder cavity layer by layer.