Centrifugal
casting has
three primary metallurgical benefits:
-
The rapid
directional solidification from the OD to the ID produces a consistent
grain structure with excellent strength and toughness.
-
The molten
metal on the interior wall feeds the solidification front and
shrinkage porosity is minimized without the use of risers or gating.
-
Under the
centrifugal force, lighter inclusions and gas porosity in the molten
metal strongly migrate to the
interior bore.
The ID of the cooled casting is then machined
to remove the consolidated casting anomalies - oxides, impurities,
and gas porosity.
|