Extrude Honing

Abrasive flow machining (AFM), also known as extrude honing, is a precise and economical method of smoothing and polishing internal surfaces and producing controlled radii.

AFM is particularly useful for difficult to reach internal passages, bends, cavities, and edges.

A one-way or two-way flow of an abrasive media is extruded through a workpiece, smoothing and finishing rough surfaces. The Abrasive Flow Machining process uses a specially formulated, abrasive laden polymer, hydraulically forced over, or through areas that requires finishing. The unique properties of the polymer (called Media) permit it to flow through passages conforming to the shape that requires finishing.

Of particular advantage are the directional finishes produced, which optimize the flow coefficient of certain workpieces, and the perfectly-formed, tangentially-blended radii formed on edges, which improves high and low-cycle fatigue strength of certain workpieces.