Abrasive flow machining can polish internal areas that conventional tools may have difficulty reaching by directing abrasive polymer media through the existing passageway.
For components with fuel, air, oil, coolant, hydraulic, or other internal pathways, AFM can combine accessibility with controlled surface improvement.
How AFM Polishes an Internal Passage
AFM media has a consistency that allows it to flow under pressure while conforming to the geometry of the workpiece.
Abrasive particles suspended in that media contact raised features on the internal surface.
Repeated controlled movement through the component gradually removes those features and produces a smoother finish.
The greatest abrasive action generally occurs where media flow is restricted, making tooling and passage geometry important parts of process design.
Automotive Flow Polishing
Middle Tennessee has a substantial automotive manufacturing presence.
In automotive applications, AFM has long been used to improve fuel and air passages where internal geometry can influence flow.
Components may include intake-related parts, engine passages, performance components, and other workpieces where smoother internal surfaces are desirable.
AFM may also provide deburring and edge conditioning as part of the same overall finishing process.
Additional Nashville-Area Applications
Flow polishing is not limited to automotive parts.
Extrude Hone AFM can evaluate suitable:- Medical components
- Aerospace parts
- Hydraulic components
- Dies and molds
- Pumps and turbines
- Precision industrial parts
- Additive-manufactured passageways
The process is adaptable because the media and tooling can be developed around the workpiece.
Surface Finish Improvement
Extrude Hone AFM provides typical finish-improvement examples including 16–8 Ra improved to approximately 3–4 Ra and 32 Ra improved to 8 Ra or better.
A 64 Ra surface may be improved to 16 Ra or better in a suitable application.
These results vary with material, geometry, beginning condition, and process requirements.
The correct target should therefore be established from the specifications of the actual component.
A Range of Workpiece Materials
AFM can polish many metals used in automotive and precision manufacturing.
Compatible materials include aluminum, bronze, copper, titanium, Inconel, superalloys, and hardened metals.
Extrude Hone AFM considers workpiece hardness when selecting media and process variables.Repeatable Polishing for Production
Manual polishing of internal passages can be difficult to reproduce consistently across a production run.
Once AFM tooling and processing conditions have been established for a part, the same flow path can be treated under controlled conditions on subsequent components.
This makes abrasive flow machining useful for both specialized work and repeat manufacturing.
Call (562) 531-2976 to discuss flow polishing for Nashville, TN with Extrude Hone AFM.
FAQs
Can AFM improve automotive air and fuel passages?
Yes. Improving the internal surfaces and flow paths of automotive components is an established AFM application.
Can AFM polish aluminum?
Yes. Aluminum is among the materials suitable for abrasive flow machining.
Does Extrude Hone AFM serve Tennessee manufacturers?
Yes. Extrude Hone AFM processes components for customers throughout the United States at its California facility.
