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The rapid adoption of additive manufacturing (AM) has created a critical bottleneck: post-processing.The complex internal channels,lattices,and organic geometries that 3D printing enables are often impossible to finish using traditional methods.Abrasive Flow Machining (AFM) is emerging as the definitive solution to this pervasive challenge,effectively unlocking the functional potential of 3D-printed parts.Unlike manual polishing or abrasive blasting,which only address external surfaces,AFM excels at processing internal pathways.
The viscoelastic abrasive medium effortlessly conforms to and flows through the intricate and often inaccessible contours typical of AM components,such as conformal cooling channels in molds or lightweight lattice structures.It systematically removes powder residue,stair-stepping artifacts,and surface irregularities uniformly from the entire geometry,both inside and out.This capability is transformative.For fluid flow applications,AFM minimizes turbulence and pressure drops by creating a smooth interior finish.
For fatigue-critical components,it eliminates micro-scale stress concentrators left by the printing process,significantly enhancing part strength and longevity.
By providing a reliable,automated method to achieve functional surface finishes on the most complex designs,abrasive flow technology is eliminating the primary barrier to industrializing additive manufacturing,moving it from prototyping to production of end-use parts.Abrasive Flow Machine Uses Diamond Fine Powder,Silicon Carbide Powder or other Abrasives Mixed Into Polymer Elastic as a soft medium.The abrasives flow up and down through the inner holesor over the machined surface to achieve surface polishing.Especially suitable for all kinds of mould and irregular shape tiny cavities.
Abrasive flow is not only a device,but also a system engineering!It includes equipment,abrasives,tooling fixtures,and important detail design and experience,which are not only reflected in the final effect and efficiency,but also reflected in the long-term stable use,and can help customers save a lot of trial and error costs!The one-way automatic circulating fluid polishing machine uses the lower hydraulic cylinder to move and squeeze,so thatThe soft abrasive is extruded from the same inlet and from other channels,and repeatedly ground toTo achieve the purpose of polishing,deburring and chamfering.

This processing method is applicable to all kinds of curved flow channels,elbows or slender pipes,and large internalCavity and other workpieces that are not easy to polish,or precision parts to remove cross hole burrs,is the most importantSuitable processing method.And the grinding direction is consistent,which can effectively improvePerformance,quality and service life of the die or workpiece.After polishing,the finish can reach the mirror grade,and the best surface roughness can reach ra0.2μm.
The two-way reciprocating circulating fluid polishing machine makes the soft abrasive flow through the inner hole,machining surface or end angle by means of the motion extrusion of the upper and lower oil pressure cylinder blocks,and moves up and down for fine grinding,so as to achieve the processing of polishing,deburring and chamfering;
This processing method is the most suitable processing method for complex shapes that are not easy to polish,such as various special-shaped holes,tooth surfaces,concave convex surfaces,or for removing cross hole burrs from precision parts.And the grinding direction is consistent,which can effectively improve the performance,quality and service life of the mold or workpiece.After polishing,the finish can reach the mirror grade,and the best surface roughness can reach ra0.025~ra0.01 um.

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