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Honorable Mention


High Pressure Boost Pump Housing Wellman Dynamics Corp. (Creston, Iowa)


Material: F357 aluminum. Process: Hybrid sand casting. Weight: 150 lbs. (68 kg). Dimensions: 22 x 25 x 26 in. (56 x 63.5 x 66 cm). Application: Rocket engine turbo system for Aerojet Rocketdyne.


• The design of the pump housing incorporates a special- ized, internal vane system with an intricate flow path. The casting had several challenges. It needed to be pro- duced in a beryllium-free alloy, and due to the high-pres- sure application, a large portion of the casting wall had to be several inches thick while several of the surrounding features and walls are very thin.


• By using 3-D printed sand cores, Wellman Dynamics replaced 20 coreboxes with two for reduced variation. A novel approach to core coating combined with improved 3-D printing techniques also was utilized to enhance the surface finish on the internal flow passageways.


PRODUCTION CONTROL SOFTWARE


DESKTOP | CLOUD | APP


www.synchroerp.com May 2018 MODERN CASTING | 35


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