TITLE: ALUMINIUM DIE-CASTING - SIMULATION OF SHOT SLEEVE
BY: D R Glynn, FLOWSOLVE, London. Tel: +44 181 944 0940
FOR: Morris Ashby Castings Ltd
- In the die-casting process, molten aluminium is forced into the
delivery channel from the "shot sleeve", a horizontal cylindrical
reservoir. A piston is pushed in at one end and forces the
metal out from the other end.
- Waves on the metal surface may cause air bubbles to pass into the
delivery channel. It is therefore important to understand the motion
of the liquid surface.
- Model features - 3D transient, free-surface (SEM), compressing grid,
cylinder represented by ASAP within a cartesian grid.
- The results are shown in two ways:
(i) Contours on symmetry plane - red is metal, blue is air.
Piston is on the right, outlet on the left.
(ii) Liquid surface in isometric view.
Piston is at the bottom left, outlet at the top right.
- For each of the above, the metal surface is shown at four instants
during the transient.
- Note that as the aspect ratio changes with compression, the scale
of the plots get bigger.