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details DESIGN


Thin Walls Lead to Sound Castings JITEN SHAH, PRODUCT DEVELOPMENT & ANALYSIS, NAPERVILLE, ILLINOIS


CASTING PROFILE


Cast Component: Engine housing.


Casting Process: Permanent mold. Material: Aluminum 319. Weight: 38 lbs. Dimensions: 28 x 18 x 10 in.


F


or a mid-volume military vehicle engine housing, the permanent mold casting process reduced machining costs, enhanced aluminum properties and provided a good surface fi nish without the use of sand cores. T e casting supplier, Watry Industries LLC, Sheboygan, Wis., produced the 38-lb. casting in aluminum 319.


Smooth surface fi nishes reduce or eliminate machining operations, as features can be cast near-net-shape.


• T e surface fi nish of this permanent mold casting was driven by the mold cavity fi nish and the use of a coating. Consult with your casting supplier on achievable surface fi nishes.


• Overall, permanent mold casting introduces clean metal into the mold cavity, achieving high internal and sub-surface soundness.


20 | METAL CASTING DESIGN & PURCHASING | Jul/Aug 2012


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