Why centrifugal disc finishing for titanium aerospace parts?
Centrifugal disc systems deliver very high relative velocities between media and parts, enabling efficient deburring, edge radiusing, fine grinding, and pre-polishing while maintaining geometry—ideal for flight-critical components where dimensional control and surface integrity matter.
LSI highlights: isotropic finishing • controlled edge break • Ra surface roughness • burr removal • burnishing • compound dosing • non-ferrous contamination control.
Looking for real aerospace use cases? See our Aerospace solutions page for industry context and machine/media pairing ideas.
Media & chemistry: what works for Ti-6Al-4V and friends
Media selection
- Fine ceramic media for controlled cut and uniform Ra progression (pre-polish / light deburr).
- Plastic (resin-bond) media where a softer, lower-impact cut is needed to protect thin-wall parts.
- Dedicated, titanium-only media sets to avoid cross-contamination from ferrous work.
Browse our media pages: Ceramic Media · Plastic Finishing Media (example).
ceramic mediaplastic mediaedge radiusingCompound & water
- Use neutral or mildly alkaline finishing compounds formulated for titanium.
- Prefer deionized water for consistent chemistry; refresh frequently.
- Rinse thoroughly; follow with approved cleaning/descaling where specified (see standards below).
LSI: passivation prep • emulsion control • corrosion resistance • cleanliness for NDT.
Baseline process window (tune to your print)
- Pre-prep: Ensure parts are free of heavy scale; remove machining burrs that could break off as FOD.
- Load & gap: Set proper disc–ring gap per machine manual for your media size; avoid trapping thin features.
- Stage 1 (cut): Fine ceramic media + compound, moderate speed. Goal: uniform deburr and edge break.
- Stage 2 (refine): Plastic or fine ceramic to bring Ra toward spec (per drawing / ASME B46.1).
- Rinse & clean: Thorough wash; if required, apply ASTM B600 compliant clean/descale before inspection or downstream finishing.
- Inspect: Surface roughness (Ra/Rz), edges, and cleanliness; document lot parameters for repeatability.
Keep a run log: media lot/shape, compound %, machine RPM, disc gap, load %, time, and resulting Ra.
Quality & risk controls for aerospace titanium
Do this
- Use titanium-dedicated media/liners; segregate from ferrous jobs.
- Verify surface texture to drawing (Ra/Rz per ASME B46.1).
- Follow approved clean/descale practices for titanium (see ASTM B600 link below).
Avoid this
- Over-aggressive media that erodes critical radii or wall thickness.
- Reusing “dirty” media across alloys—risk of foreign metal pickup.
- Skipping neutralization/rinse—residual chemistry can affect NDT or coatings.
Aerospace materials & polishing related standards (for reference)
- ASTM B600 – Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces
- ASME B46.1 – Surface Texture (Roughness, Waviness, and Lay)
- SAE AMS 2488 – Anodic Treatment of Titanium and Titanium Alloys
These references are commonly paired with mechanical finishing to define roughness targets, cleanliness, and downstream treatment compatibility.
Applications & cases
Typical parts: compressor hardware, brackets, housings, hinges, seat track hardware, fasteners, UAV components. Outcomes: consistent edge break, improved tribology for mating surfaces, and spec-compliant surface texture ready for inspection, coating, or anodize.
Explore our aerospace solutions for machine sizing and media pairings.
Ready to validate a titanium finishing recipe?
Send us sample parts—our team will run a free sample finishing and return results with a documented process window (machine, media, compound, cycle time).
Need non-Ti parts done too? We can separate media sets by alloy family to maintain cleanliness.
Quick Q&A
What Ra can centrifugal disc finishing achieve on titanium?
It depends on incoming condition, media sequence, and compound control. Use B46.1 methods to measure and tune your sequence (e.g., fine ceramic → plastic → light burnish) to the drawing’s target.
Do I need a zero-gap machine?
Zero-gap is helpful for very fine media/small parts to prevent lodging. Our disc lineup includes adjustable-gap and zero-gap models—see the category page for options.
How to avoid contamination?
Dedicate media and bowls to titanium work, refresh solutions frequently, and follow ASTM B600 cleaning before inspection or downstream processing.
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