Centrifugal casting provides high material soundness and is the metal casting process of choice for jet engine compressor cases, petrochemical furnace tubes, many military and defense components, and other applications requiring high reliability.
In centrifugal casting molten metal is poured into a spinning die, which can rotate on a vertical axis (vertical centrifugal casting) or horizontal axis (horizontal centrifugal casting) depending on the configuration of the part. Ring and cylinder type shapes are made by vertical centrifugal casting while tubular shapes are made by horizontal centrifugal casting. Either process can be used to produce multiple parts from a single casting.
High centrifugal force applied to the molten metal in the spinning die causes less dense material such as oxides and impurities to “float” to the inner diameter (I.D.) where they concentrate and are removed by machining. Solidification is managed directionally under pressure from the outer diameter (O.D.) to the I.D., avoiding mid-wall shrink. This results in a defect-free structure without cavities or gas pockets.
With the world’s largest and most diverse inventory of centrifugal dies, MetalTek minimizes both upfront tooling costs and product lead times for our customers. We can produce horizontal centrifugal castings with O.D. up to 60″ (1,524 mm), length up to 432″ (10,973 mm), and weight up to 125,000 lbs. (56,700 kg). Vertical centrifugal castings are available with O.D. up to 180” (4,572 mm) and weight up to 34,000 lbs. (15,422 kg).
With the world’s largest and most diverse inventory of centrifugal dies, MetalTek minimizes both upfront tooling costs and product lead times for our customers. We can produce horizontal centrifugal castings with O.D. up to 60″ (1,524 mm), length up to 432″ (10,973 mm), and weight up to 125,000 lbs. (56,700 kg). Vertical centrifugal castings are available with O.D. up to 180” (4,572 mm) and weight up to 34,000 lbs. (15,422 kg).
Net-shaped centrifugal casting combines centrifugal casting and investment casting. A wax mold is used to create a ceramic shell that is placed within a vertical die to centrifugally cast the part. With medium to high volumes, the relatively large upfront tooling cost is more than offset by lower machining costs.
Near-net shaped centrifugal casting is like net-shaped centrifugal casting but uses a sand mold while centrifugally casting the part. Tooling costs are lower than net-shaped centrifugal casting, but more machining may be needed for the required level of O.D. detail. This makes near net-shaped centrifugal casting more appropriate for low to medium volumes.
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