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Castings in aCtiOn


Steel Conversion Keeps Wheelchair Locked and Safe


Cast Component: Locking Hinge Assembly equipment.


Material: 4140 steel. Process: Investment casting.


Converted From: Aluminum fabrication.


Casting Supplier: Signicast Investment Castings, Hartford, Wis.


• The locking hinge fits on a wheelchair and is more durable than its aluminum counterpart.


• The metalcaster delivers the three-piece assembly zinc-plated with an additional chromate coating for a black appearance and achieves mating between the parts as-cast, eliminating a broaching step employed by the aluminum predecessor.


May/June 2011


Metal Casting Design & PurChasing


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