Line and Orientation in the Mold
Criteria -- The pattern has to be planned and designed so that
- The parting line is in the largest cross-sectional plane
of the casting.
- The component face with the greatest surface detail is in the
drag, because fluid fill is better in the drag and low-density, non-metallic inclusions
tend to segregate in the cope at the top of the casting .
- The pattern is oriented for continuous, low velocity ,
non-turbulent fluid flow.
- The need for cores is minimized or eliminated.
Schematic of Parting Line in a Sand Mold