The common problem of rough inner wall of 3D printed parts is a common problem in the industry. Seemingly subtle inner wall defects will directly affect the performance of the product, resulting in a significant decrease in the pass rate and service life of the parts.

3D printing rough inner wall will bring many hidden dangers in production and use: high resistance of the flow channel, resulting in cooling, low fluid efficiency of the oil circuit, and increased energy consumption; the groove of the inner wall is easy to store dirt and slag, which is easy to cause blockage after long-term use; at the same time, stress concentration points will be formed, which will make the parts anti-fatigue and corrosion performance worse, and prone to cracking and failure after stress. The traditional manual grinding, sandblasting, electrolytic polishing and other processes cannot handle complex structures such as special-shaped flow channels, cross micropores, and deep cavities, and are also prone to problems such as uneven polishing, dimensional deviation, and thin-wall deformation.

Abrasive flow polishing: 3D printing cavity precision finishing options

The greater advantage of this process is that there is no dead-end polishing, no damage to the workpiece, and it can be adapted to complex structures that cannot be touched by traditional processes such as bends, variable-diameter flow channels, cross microholes, and deep blind holes. The whole process is flexible, without causing part deformation, dimensional overshoot, and micron-level controlled removal. The accuracy is stable and guaranteed.

1. Improve fluid efficiency: the inner wall finish is greatly optimized, the pressure drop is reduced, the cooling, hydraulic, ventilation and other circulation performance are more stable, and the energy consumption of equipment operation is lower;

2. Eliminate clogging and accumulation of pollution: smooth inner wall without hidden pollution dead angle, not easy to leave impurity dust, suitable for long-term stable operation of precision pipelines;

Summary: Abrasive flow polishing makes up for the shortcomings of metal 3D printing post-processing, efficiently solves the problem of inner wall roughness, and improves product quality and performance in an all-round way while ensuring the dimensional accuracy of parts. It is a reliable inner cavity finishing solution in the precision manufacturing industry.