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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