Now that we have obtained the steady state thermal die
profile from the thermal die cycling simulation, let us
analyze the filling of the die. We implement a properly
designed shot sleeve profile to rapidly push metal into the
die. In this stage of the simulation, the molten metal needs
to quickly fill the die to prevent early solidification. At
the same time, care should be taken so that the liquid metal
front does not fold over itself causing air entrainment that
results in internal defects or any potential surface defects
formed by oxides. This is one of the more challenging
simulations as it entails accurately tracking the metal
front at high pressures and velocities.