Study on mechanism and process of cutting silicon carbide ceramics with diamond wire saw

Through the single factor experiment design of cutting SiC ceramics with diamond wire saw, the influences of technological parameters such as the linear speed, the feed speed and the ratio R of feed speed to linear speed on the surface quality of SiC ceramics were studied. The surface morphology and surface roughness were observed and measured by ultra depth of field three-dimensional microscope and precision roughness profiler. The results show that when the linear speed is increased from 0.4 m/s to 1.3 m/s, the surface morphology of SiC ceramics is obviously improved, and the surface roughness in the feed direction and in the wire saw direction is reduced by 20.35% and 10.45%, respectively. When the feed speed is increased from 6 μm/s to 24 μm/s, the surface morphology has changed from better to worse, and the surface roughness in the feed direction and in the wire saw direction is increased by 12.07% and 3.91%, respectively. When the feed speed and the linear speed are increased, while the ratio R of the two is fixed at 2×10^-5, the surface quality of SiC ceramics is basically maintained at the same level.