An Example in Steel CastingTraction Motor Rotor Disc
Option
B - Ribs Up
Ribs Up
In Option B the thin wall ribs
and the base ribs are oriented up in the top (cope section) of the
mold.
If inclusions or porosity form, they
will segregate in the ribs of the casting where they will
act as structural flaws in the stressed ribs and cause problems in
finish machining.
The ribs and machined surfaces will be at risk with this
orientation.
