Sand Casting

Both greensand and chemically bonded sand moulds are filled in the same way.  Molten metal is poured from a vessel or ladle into the mould cavity via a system of runners and ingates.  Mould filling takes place under no force other than gravity, although it is possible to adopt a system similar to low pressure die casting for sand moulds, whereby the molten metal is forced into the cavity by a low pressure difference.