Molten Aluminum Alloy Flow through Casting Filter Installed at Sprue.

The production of defect-free castings leads to mechanical properties, production quality, and increasing productivity. It is important to control mold filling and solidification behavior. The casting filter is expected to control the fluidity during mold filling and remove inclusions. In this study, to clarify the effects of casting filters, direct observation of mold filling was done for an aluminum alloy gravity casting with and without foam, honeycomb, and strainer filters installed at the bottom area of the sprue. The velocity of the molten metal decreases and flows more laminarly after passing through the casting filter. Further, particle-based SPH (Smoothed Particle Hydrodynamics) software simulates the flow behavior during passage through the filter. The simulation also roughly reproduced the behavior before and after passing through the filter. [ABSTRACT FROM AUTHOR]