Compressor Impeller Casting: Aerospace Process Guide
TL;DR: Compressor impeller casting produces the rotating bladed wheel that raises pressure in a centrifugal compressor. Investment casting forms the complex blades to near-net shape in titanium, aluminium, or superalloy.
Compressor impeller casting makes the bladed wheel at the heart of a centrifugal compressor. By casting the complex blades to net shape, compressor impeller casting cuts heavy machining. It builds on our investment casting process.
What Is Compressor Impeller Casting?
Compressor impeller casting produces the rotating, bladed component that raises the pressure of air or gas in a centrifugal compressor. The curved, three-dimensional blades are hard to machine, which makes casting attractive. Casting the blades whole avoids the slow, costly machining of each aerofoil. See this reference.
Aerospace Impeller Investment Casting
Aerospace impeller investment casting forms the full bladed wheel in one piece. Aerospace impeller investment casting reduces machining of the complex blades and suits titanium, aluminium, and superalloy parts. This one-piece approach also improves strength and balance.
Key facts on impeller casting:
- Casts the full bladed wheel to near-net shape.
- Reduces heavy machining of complex blades.
- Titanium poured under vacuum for cleanliness.
- Aluminium and superalloy options available.
- Ideal for complex, curved impeller blades.
Centrifugal Compressor Casting
Centrifugal compressor casting covers the impeller and its matching parts. In centrifugal compressor casting, the impeller raises pressure by spinning the flow outward, and diffusers and housings are cast to suit. Together these parts turn engine power into a steady rise in pressure.
Where compressor castings are used:
- Impellers that raise pressure by spinning flow.
- Used in engines, turbochargers, and small turbines.
- Diffusers and housings cast to match.
- Balanced after machining for smooth running.
- Verified by NDT for internal soundness.
Bladed Impeller Manufacturing Methods
Bladed impeller manufacturing can be done several ways. Bladed impeller manufacturing by investment casting suits complex, high-volume parts, while 5-axis machining suits the highest-performance wheels. The right method balances cost, volume, and the performance the wheel must reach.
- Investment casting for complex integral blades.
- 5-axis machining for the highest performance.
- Additive manufacturing for prototypes and repairs.
- Casting suits volume and complex geometry.
Why Choose Uni Tritech for Compressor Impeller Casting
Uni Tritech is a NADCAP-certified, AS9100D foundry approved by Airbus and Collins Aerospace. We cast complex impellers to near-net shape and finish them with in-house CNC machining, NDT, and laboratory services.
- Near-net-shape casting of complex impellers.
- Vacuum melting for titanium and superalloys.
- In-house CNC machining and balancing support.
- AS9100D quality, Airbus and Collins approved.
Frequently Asked Questions
Centrifugal compressor impellers are investment cast to near-net shape, forming the complex blades in one piece. Titanium is poured under vacuum, then the bore and faces are machined, the wheel is balanced, and NDT confirms soundness.
It depends on the part. Aerospace impeller investment casting suits complex, higher-volume wheels, while 5-axis machining suits the highest-performance impellers. Additive is used for prototypes and repairs.
Compressor impeller casting produces the rotating bladed wheel that raises pressure in a centrifugal compressor. Investment casting forms the curved blades to near-net shape, cutting heavy machining.
Aerospace impeller investment casting forms the full bladed impeller in one piece to near-net shape, in titanium, aluminium, or superalloy, reducing the machining of complex blades.
Centrifugal compressor casting covers the impeller and matching diffusers and housings. The impeller raises pressure by spinning the flow outward, and every part is machined, balanced, and NDT verified.
Need compressor impeller casting for aerospace? Contact Uni Tritech to discuss your components.
Need aerospace compressor impellers cast to net shape?
Uni Tritech investment casts complex bladed impellers with full traceability. Talk to us about your parts today.
