Surface quality of double-sided grinding Si3N4 cylindrical rollers

In order to obtain the optimal process parameter combination of double-sided grinding Si3N4 cylindrical rollers, the orthogonal experiment method was used to explore the influences of the grinding disc speeds, the grinding pressures and the basic particle sizes of the abrasive particles on the surface quality and the removal efficiency of Si3N4 cylindrical rollers. The results of the surface roughness and the material removal efficiency of the specimen are taken as the basis for optimizing the grinding process parameters. The results show that the surface roughness of the specimen first decreases and then increases with the increase of the grinding disc pressure and the grinding speed. The basic particle sizes of the abrasive are positively correlated with the surface roughness of the specimen, while the grinding disc speed and the grinding pressure are positively correlated with the removal efficiency. The optimum combination of grinding parameters for Si3N4 cylindrical rollers is that the basic particle size of diamond abrasive is 2.6 μm, the grinding disc speed is 20 r/min and the grinding pressure is 0.15 MPa. Under the optimal parameters, the smooth and undamaged Si3N4 cylindrical rollers with surface roughness of 0.0486 μm and removal efficiency of 1.20 μm/min can be obtained.