Post Filling

Occurs by buoyancy-generated convection currents after filling, because of the loss of liquid metal superheat in the casting cavity of the mold.
These currents tend to redistribute the melt temperature and composition until solidification begins. 
This significantly shifts the hot metal to the top and then redistributes the thermal state of melt before solidification begins. The differences in atomic weight of element metals cause an additional convection pattern.

Specially in heavy cast parts, after filling, there is a natural movement of molten metal in the mold due to heat transfer and density differences.
Running simulation without considering post filling phenomena in heavy cast parts shows false result and leads to the wrong casting design.
By using SUTCAST post filling Feature, user can have accurate results to prevent mistakes.