Complex inner hole cross hole burr removal has always been a difficult problem in the field of precision machining. Traditional polishing methods such as electrolytic polishing easily erode the surrounding area, magnetic polishing is not good for micro-pores, and manual polishing may damage the workpiece and cause inaccurate size. In contrast, abrasive flow polishing technology has become an ideal choice for handling such structures due to its high efficiency, environmental protection and precision.

Principle of abrasive flow polishing

The technology circulates through the inner cavity of the workpiece through the abrasive (containing hard particles such as silicon carbide, boron carbide, diamond, etc.) under high pressure. The abrasive repeatedly squeezes and scrapes the edge of the cross hole under pressure to gradually remove burrs and improve the surface finish.

Its advantages are:

No dead angle processing: The abrasive has strong fluidity and can penetrate deep into the complex inner cavity to completely remove the burrs at the cross holes.

Precise control: By adjusting the pressure, abrasive concentration and number of cycles, micron-level surface roughness (such as Ra0.01-3.2 μm) can be achieved according to the requirements.

Single and two-way processing: a single process can simultaneously complete deburring, rounding and polishing, improving efficiency.

Practical application case

Stainless steel parts: a 0.56mm aperture workpiece, using a one-way abrasive flow equipment, to complete the processing of 20 parts at a time, with a removal rate of 99.99% without damaging the hole wall accuracy.

Abrasive flow polishing technology provides an efficient and reliable solution for deburring complex inner hole cross holes in a "soft and rigid" way, especially suitable for high-precision part processing in automotive, aerospace, medical, 3D printing and other fields.