in action CASTINGS
Investment Casting Boosts Turbocharger’s Performance
Cast Component: Housing. Material: 309 stainless steel. Process: Investment.
Application: High performance automotive turbocharger.
Casting Supplier: Aristo-Cast Inc., Almont, Mich.
Dimension: 9.8 x 6.6 x 5.7 in.
• T e investment casting process was selected for the component to minimize wall thickness (less than 4 mm) and to reduce weight compared to sand casting options.
• T e valve seating surface was designed as an as-cast surface which eliminated the need for machining.
• T e casting’s highly smooth surface fi nish improves turbine gas fl ow effi ciency.
18 | METAL CASTING DESIGN & PURCHASING | Sept/Oct 2014
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