Based on analyzing the material properties and grinding mechanism

the mill-grinding process is presented to machine high volume fraction SiCp/Al MMCs. The experimental results show that 65% volume fraction SiCp/Al MMCs presents the machinability of brittle material. Meanwhile

the electroplated diamond wheel will not be smeared with soft aluminum to lose machinability. The broken degree of SiC particles is the main influencing factor of surface roughness. R a value decreases gradually with increasing of disintegrated degree

wheel’s grit number and reducing of feed speed. Under the given experimental conditions

120# φ 8mm electroplated diamond wheel is very suitable for rough machining and MRR can be improved to 2400mm3/min with parameters optimized. At the same time

F z is not more than 25N and F x

F y are not more than 15N. The finishing SFR can be reached 6400mm2/min utilizing 230# φ 8mm electroplated diamond wheel under the premise of surface roughness less than R a0.4μm.