Abrasive Flow Machining

Industrial manufacturing equipment in a factory setting, featuring multiple blue machines with control panels and platforms.

Definition of AFM

Abrasive Flow Machining (AFM) uses abrasive-filled polymer media to remove material from workpieces.

It effectively finishes complex geometries and hard-to-reach areas where traditional methods may struggle.

Close-up of a turbine or jet engine fan blades.

Materials Commonly Flowed

AFM is suitable for a variety of materials, including metals and plastics, making it a versatile choice in the manufacturing sector. It is particularly beneficial for components with intricate designs or tight tolerances, ensuring that every detail is refined to meet exact specifications.

New 3D printed metal technology often faces surface roughness problems, making AFM an excellent option for manufacturers seeking a smoother finish.

Close-up of a metallic surface with two drilled holes and a small, colorful painted mark in red, blue, and black.
Diagram illustrating the process of Abrasive Flow Machining (AFM), highlighting components such as media reservoirs, tooling fixtures, and the part being machined. Arrows show the flow direction during the first and second parts of the cycle, utilizing hydraulic pressure. Text description at the bottom explains the AFM process for polishing, deburring, and smoothing parts with complex geometries.

How and for whom?

AFM extrudes media through the workpiece under controlled pressure, allowing precise material removal and surface enhancement, which leads to improved finishes, accuracy, and burr elimination.

It is commonly used in aerospace, automotive, and medical device manufacturing for high-quality finishes on different materials. This process is becoming more and more important for Additive Manufacturing (AM). Parts that utilize AM are unattractive and rough, and this is where AFM can help with additive finishing.