Case Study “This pump housing is an excellent example of how the


Fabrication Conversion Saves Valuable Time and Cost


investment casting process offers the versatility to consolidate a fabrication made from multiple components, made from a variety of processes, into a single piece casting,” explains Jake Robben of O’Fallon Casting.


Aero engine pump


housings are laden with complex internal passages, and are typically fabricated through the consolidation of a number of components manufactured by several processes. Through the use of the investment casting process, it was possible to reduce component weight while simultaneously eliminating future failure points at the assembly location. This casting contains multiple interconnected core passages with varying diameters and depths. Considering this with the combination of thin walls, large masses of metal and grade B metallurgical requirements, the component lends itself to the investment casting process. Through the application of this process and design optimizations, O’Fallon Casting was able to help the customer reduce the number of weld openings from ten to five, which saved the customer cost and provided a more robust product.


O’Fallon Casting


PART: Pump Housing Casting Size: 12 x 10 x 8” Alloy: C355


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June 2019 ❘ 21 ®


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