The principle of micro hole abrasive flow polishing machine is in fact similar to our single way abrasive flow polishing machine. main difference is that the micro hole abrasive flow polishing machine uses a low viscosity medium and smaller abrasive particles. The abrasive material is lighter, more fluidity, but has enough consistency to maintain the viscosity, and keep grinding. 
The polish effect is more uniform so that the abrasive media can flow through the micro-holes to remove tiny burrs and improve the surface quality and the inner wall of the pores. This abrasive flow polishing machine is specially developed for fuel oil spray nozzle nozzle and oil valve body. The process can improve fuel atomization, improve engine performance and reduce emissions.