Overflow Design Options
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Overflows are cavities and passages in the die which act as vents for air to escape and cavities for excess metal flow.

  • Overflows reduce porosity and promote complete metal fill into the far sections of the cavity.

Two overflow designs were considered for the fan housing with the center shot gate.

--- Option A -- Six overflows around the perimeter of the rim
--- Option B -- Twelve overflows around the perimeter of the rim

Choose the overflow design
(Option A or Option B)
that will provide complete fill of the outer rim.
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Option A - Six Overflows
12Flows.jpg (21501 bytes)
Option B - Twelve Overflows
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Choose a Design
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Copyright 2003  by the North American Die Casting Association.  All rights reserved. 
Comments to:  udvardy@diecasting.org		 U-Arrow.gif (1027 bytes)

In cooperation with
Kennedy Die
Casting

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