Subcontract Surface Finishing for Aerospace Components
Hit demanding aerospace Ra, edge-radius and geometry targets without adding capital expenditure or headcount
Call Fintek 01706 825819 or enquire here
The aerospace supply chain is playing its part in helping the industry to meet the challenges of reducing emissions and noise by improving aerospace component. Surface smoothness and precision engineering to increasingly tight tolerances are often where significant gains are made. Subcontracting to Fintek can help you access the latest post processing technology quickly:
- Zero capital expenditure, instant capacity: Access world class OTEC Präzisionsfinish disc, drag, stream and electro finishing – on demand
- Repeatable, spec-tight results: Homogeneous smoothing to 0.05μm or less, precise leading/trailing edge rounding and root radii, minimal geometry change
- Large part finishing: Up to 650mm long, 900mm diameter and a weight of 200kg
- Fast turnarounds: Example: 5 titanium compressor blades (≈90×40 mm) processed in 10–20 minutes (initial roughness dependent)
- Optimised for AM & MRO: Proven for machined and additively manufactured parts; ideal for post-production and repair
- Prove process before capex: For higher volumes a machine for inline production can be tested before purchasing
- Rapid prototyping: Fintek can respond quickly to your need for rapid development
- Suface finished PVD coated parts: Fintek can improve component surfaces for better PVD coating application. And post coating for smoothing and to remove hard droplets
Examples of polishing aerospace blades, vanes and blisks
Aerospace components we post post-process
Turbine and compressor blades and disks, vanes, blade roots, complete blisks, gears, housings, cases, gearboxes, combustors, small frame parts, smaller fasteners and ultra-thin parts. We can also refurbish worn cutting tools to ensure better machining that can reduce subsequent surface finishing costs.
Not in the list? Don’t worry. At Fintek our surface finishing technicians will develop the right combination of machine and process to meet your quality and commercial goals.
Example: typical aerospace blade surfaces targeted for improvement - airfoil, leading and trailing edges, fillit, root and shroud
Post-processing - proven on AM alloys
Example: Inconel 718 vane (≈200 mm) from Ra ~7.4–9.11 μm to Ra 0.27–0.29 μm in ~40 minutes using OTEC Stream Finishing.
Why Fintek + OTEC stream finishing?
- One cycle achieves more than one target: for example, airfoil and fillet smoothing
- Automated, removes manual variability and error
- Consistent finish as media wears – no time tweaks needed
- Scrap reduction up to 90%; up to 100× faster than conventional vibratory methods
- Minimal geometry change; PVD-coating friendly (pre/post)
- Positive outcomes in residual stress, fatigue strength & fluorescence control tests
- Longer blade life and efficiency
- Flexible fixturing – one machine handles blades, segments, blisks, disks & gears
Steps to start your subcontract surface finishing with Fintek
With EN9100 and ISO9001 certifications you can rely on Fintek to handle your subcontract surface finishing of aerospace components. Take the next steps:
- Share drawings/spec & targets (Ra, radius, geometry)
- Book a finishing trial
- Contact us via the ‘Ask an Expert’ form
- Need subcontract services now! – call us
Call Fintek 01706 825819 or enquire here
Read an aerospace case study: Aerospace Component Manufacturer Turns to Fintek to Solve Hand Deburring Bottleneck
Want to purchase an OTEC stream finishing machine?
For larger volume production you may prefer to purchase. No problem. As OTEC’s UK’s exclusive agent we can supply the right machine, process media and support you through set-up to smooth production.
