Simple Solutions That Work! Issue 14

10 Figures 3 and 4 show a comparison of how the filling process is depicted in simulation. Forced heating or cooling – The use of burners or cooling channels can be handled in a number of ways. The simplest is a constant temperature material, like the burners, highlighted in red in Figures 5 and 6, which are a casting made of lead. The use of a cooling channel can range from very simple to quite complex. A cooling channel can be always on or activated by time or temperature. There can even be delays in actions, as shown in Figure 7. Figure 3:Tilt-Pour Filling Using Ingate Filling Figure 4: Tilt-Pour Filling Using Fixed Volume Filling SETUP CONSIDERATIONS One setup consideration is how to appropriately handle heat transfer at casting/die interfaces. Since a metal die is conductive, like the cast metal that is poured into it, die coatings significantly affect heat transfer. This is normally taken into account with a table of Heat Transfer Coefficients, or HTCs, which measure the resistance to heat flow at any surface between two materials, such as casting/die, die/air, gating/die, etc. Use of insulating sprays on the gating/ risering can easily be handled using HTCs. You can also Figure 5 and 6: the lead casting risers heated with constant temperature burners. Shown with and without the die.