Using Simulation to Design Feeding Systems for Investment Castings

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Figure 1

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STL model of an impeller casting. ‘Naked’ simulation results, without filling.

Figure 2

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Feeding Zone 1: last point to freeze on the zone

Figure 3

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Feeding Zone 2: last point to freeze on the zone

Figure 4

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Gate and Feeder Bar Sizing.

Figure 5

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Modulus data is used to size both the tapered gate and the feeder bar.

Figure 6

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Initial rigging design and material density plot, showing areas of poor feeding.

Figure 7

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Improved feeding by inverting the casting, adding multiple gates on the flange.

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