Casting can reduce the amount of material that must be removed compared with machining a complex housing from solid stock. It is most useful when the tooling and production strategy fit the quantity and geometry of the component.
Integrated Features
Forming Complex Housing Geometry
Cast components can include walls, ribs, bosses, mounting pads, cavities, fins, openings, and external shapes within the basic casting geometry.
Industrial die castings are used throughout manufacturing for repeat metal components with integrated shape.
Casting Families
Metal Casting Processes
Die casting is one form within the broader metal casting category.
The appropriate casting method depends on alloy, geometry, production quantity, surface requirements, tolerances, tooling, and subsequent machining.
Heat Transfer
Using Cast Geometry as a Thermal Structure
A cast housing can include thicker heat-spreading regions near LED boards and external fins where the design benefits from additional surface area.
Thermal contact surfaces may still require machining or other control to create predictable interfaces.
Secondary Operations
Machining Critical Cast Surfaces
Threads, sealing surfaces, connector holes, precision LED-board seats, optical datums, and other functional areas can be machined after casting.
This allows casting to create the overall shape while machining establishes critical dimensions.
Other Casting Processes
When Different Casting Methods Are Considered
Other processes such as sand castings can be used for different combinations of geometry, tooling, quantity, material, and size.
Manufacturing method should be chosen around the component rather than treating all cast parts as equivalent.
Selection