Best-In-Class
Chevy Volt Front Sub-Frame K Cradle Magna Cosma Grenville Casting Perth, Ontario, Canada
Material: Aluminum A356.2-T5. Process: Low Pressure Permanent Mold Casting. Weight: 29.34 lbs. Dimensions: 41.2 x 7.2 x 25 in. Application: Font chassis and suspension component.
• T e cast aluminum front subframe off ers a 30% reduction in weight to the steel version and integrates a welded steel assembly of 15 compo- nents to a single part.
• T e permanent mold process used to cast the subframe used manu- facturing features to lower the overall cost, such as tooling and gating that creates two castings per cycle and two slide cores for each casting to create right and left hand control arm features to minimize the amount of machining required.
• T e lower weight is critical in electric vehicle because the engine (or battery) can be downsized while the range or distance the vehicle can be driven between charging is extended.
24 | METAL CASTING DESIGN & PURCHASING | May/Jun 2017
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