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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