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WHEN CASTING CAN BE CONSIDERED


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Originally machined from solid billet, this cold chamber shot end plunger tip was redesigned as an investment casting for a 22% cost reduction. Casting provided the customer the ability to add as-cast internal heat transfer features not possible in machining.


The assembly consists of multiple parts in the same material or with the same property requirements/application demands.


Casting design provides the


freedom to design geometrically, unifying multiple pieces as one. “Te more pieces you have to


weld together, the better a casting looks, economically,” Hildebrand said. “Geometry is essentially free in a cast- ing. I can add strength where needed. It’s easy to do in a casting, much harder to do in a weldment.”


Other similar functioning parts are made as castings.


When Hildebrand gives cus-


tomers a background on weldment to casting conversions, he likes to show examples. Often, this sparks recogni- tion and familiarity. Te customer sees something similar to their own parts, and the connection is made more easily for the potential of moving to a metal casting. “Te second conversion is always


easier,” Hildebrand said. “Or customers


This 30-piece planter row unit (background) was redesigned as seven castings. Reducing part count helps decrease assembly time and inventory management.


34 | MODERN CASTING June 2017


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