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CNC High-Temperature Alloy Helicopter Engine Impeller
KGL uses nickel-based superalloys (Inconel 718, GH4169) for precision machining of impellers used in helicopter turboshaft engines and auxiliary power units (APUs). We use DMU/Hermle machining centers for five-axis simultaneous machining, controlling blade profile tolerances within ±0.005mm, and the blades undergo complete coordinate measuring machine (CMM) inspection and AS9100D certification.
5.0
Origin:
China
Trademark:
OEM
Country:
China
Customization:
Available
Production Capacity:
100000PCS
Specification:
Customized
HS Code:
8479909090
Transport Package:
Inside Separate Bubble Pack Outside Woodencase
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Specifications
| Material | Inconel 718, Inconel 625, GH4169, René 41 | Blade Count | 7–31 blades (open / semi-closed / closed) | ||
| Process | 5-Axis CNC Simultaneous Machining + EDM | Working Temp | Up to 1,000°C continuous service | ||
| Tolerance | ±0.005mm (blade profile), ±0.003mm (bore) | Certification | AS9100D / ISO 9001:2015 / BV | ||
| Surface Finish | Ra ≤ 0.8μm (flow path), Ra ≤ 0.4μm (seal faces) | Inspection | HEXAGON CMM + KEYENCE 3D Microscope + Full FAI | ||
| Max Diameter | Up to Ø650mm | Lead Time | Prototype: 15–25 days | Production: TBD by volume | ||
The advantages of the product
High-Temperature Alloy Expertise
In-house metallurgists and proven toolpath strategies for nickel superalloys (Inconel 718/625, GH4169). We control work-hardening, tool life, and thermal distortion.
5-Axis Simultaneous Machining
Dedicated 5-axis DMU & Hermle centers hold blade-profile tolerance to ±0.005mm across complex freeform surfaces in a single setup — no re-fixturing errors.
AS9100D + BV Certified
Full aerospace QMS with Bureau Veritas audit trail. Every impeller ships with dimensional report, material certs (MTRs), and process traveler.
HEXAGON CMM Full Inspection
Every impeller is CMM-measured against 3D CAD with color deviation map. FAIR (First Article Inspection Report) available for AS9100D customers.
Prototype in 15–25 Days
Dedicated prototype lanes and DFM feedback within 48 hours of drawing receipt. We catch tolerance stack issues before you finalize design.
End-to-End Supply
Raw material sourcing → machining → heat treatment coordination → finishing → CMM → export packaging. One accountable supplier.
Application Scenarios
Turboshaft Engines: Helicopter Main Engines – Bell, Sikorsky, Airbus Helicopter Platforms
Auxiliary Power Unit (APU): Centrifugal Compressors for Rotorcraft
Unmanned Aerial Vehicles/Electric Vertical Takeoff and Landing Vehicles (eVTOL): Next-Generation Electric and Hybrid Propulsion Compressor Impellers.
Ground Test Stands: Engine Test Stands with Flight Equivalent Specifications
Turbine Mechanical Components
b2
b3
b4
b1
FAQ
1
Q: Which high-temperature alloys can be used for machining helicopter engine impellers?
A: We typically machine Inconel 718, Inconel 625, GH4169 (Chinese equivalent alloy), René 41, and Waspaloy. These nickel-based high-temperature alloys exhibit work hardening and heat sensitivity—our five-axis toolpath strategy and coolant management ensure dimensional stability and surface integrity.
2
Q: What size blade profile tolerance can you maintain?
A: Our standard is a blade profile tolerance of ±0.005 mm and a bore/journal feature tolerance of ±0.003 mm. For flight-critical applications requiring tighter specifications, please contact us and provide drawings—we have achieved a profile accuracy of ±0.003 mm on certain geometries.
3
Q: Do you provide material traceability and certification documentation?
A: Yes. We provide Factory Test Reports (MTR) for all raw materials, perform full-dimensional inspection using a HEXAGON Coordinate Measuring Machine (CMM), and provide a process flow sheet for each batch. AS9100D FAIR certification documents are available upon request.
4
Q: What is the typical lead time for a prototype impeller?
A: It typically takes 15-25 working days from the date of drawing approval, depending on the complexity of the geometry. We will provide DFM feedback within 48 hours of receiving the drawings and point out any tolerance or manufacturability issues before you begin mold making.
5
Q: Can you machine closed/semi-closed impellers with narrow flow channels?
A: Yes. We machine open, semi-closed, and fully closed impellers. For narrow flow channels (channel width less than 8 mm), we use specialized extended cutting tools, and our methods have been validated on helicopter auxiliary power units (APUs) and turboshaft engine impellers.
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Get in touch with us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
Providing precision CNC machining services from single-piece customization to mass production, encompassing a multi-process combination of milling, turning, and grinding.
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Contact Us
Contact person: Jason Hu
Tel: +86-0755-23011758 +86-18126505733
Email: kgl@kglmfc.com
Add: No.30, Changyue Road, Kgl Smart Industrial Park, Shenzhen City Guangdong China. 518108