In tilt pour casting, the metal is poured into a holding cup while the mold is in its horizontal position. Then, with a preset cycle time, the casting machine raises to a vertical position, allowing the metal to enter the die cavity at a slow, continuous pour rate. The tilt-pour method is a good choice for general casting purposes because of its feed/gate flexibility which allows for a wide variety of casting shapes.
Temperature Profile During a Tilt Pour Filling Cycle
A simulation of a tilt pour process was performed on an aluminum coupler cable run to cable tap to ensure part integrity and surface quality. The time it takes to complete the tilting rotation is important. The rotation rate can be easily modified in FLOW-3DCast allowing the user to optimize this speed: too fast and air will be entrained into the flow, too slow and there will be more surface defects. The temperature profile is visualized by setting the maximum and minimum graph values as the liquidus and solidus temperatures, respectively. Here, the part is halfway filled and the metal temperature is not near its solidus temperature so there will be no early solidification. Simulation post-processed with FlowSight, coming soon in FLOW-3D v11.
Tilt Pour Casting of a Fan
Simulation of casting a fan tilt pour casting. Courtesy Simtech Systems.