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erties of the surrounding extrusions.


2. To crush in the proper mode, certain areas of the node castings must match the wall thickness of the extrusions (3-4mm). At the same time, the nodes must incorporate thick section bosses to rigidly mount to the front suspension arms.


3. The nodes must be hollow in order to allow the extrusions to be slotted inside and welded and to optimize weight reduction.


4. The nodes must keep a low dimen- sional tolerance to reduce problems within space-frame construction.


5. The nodes must have minimal porosity in order to achieve good welding quality.


6. The rear node casting must with- stand 210 kN without breakage. “No other process could provide the


combination of hollow shapes, small wall thickness, welding performance and material properties to meet the design requirements,” Vais said. “Te NSX body designers were amazed at the amount of design freedom they could get from ablation casting as well as the mechanical properties. Ablation casting allows the shape freedom of


MEDIA RESOURCE Using the Actable App, scan this page to see a photo gallery of all the submis- sions to this year’s Casting of the Year competition. Or, view the gallery at www. moderncasting.com.


sand casting while getting the material properties of a premium die casting.” Te high solidification rates of the ablation process enables the formation


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