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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