Impact of process parameters on super-smooth surface of the fused silica created by magnetorheological finishing: simulation and experimental study

To achieve the super-smooth surface of the fused silica via using the magnetorheological finishing (MRF) technique, the synergistic effect of the rotational speed, viscosity, and working gap is well investigated. According to the pressure field simulation based on the two-dimensional Reynold equation, the working gap is of remarkable importance to the surface roughness among three parameters. Furthermore, such result is also revealed by the MRF experiment. Accordingly, the optimized process parameters are identified, and the final surface roughness is achieved as low as 0.22 nm.