Si3N4 ceramic ball surface quality prediction modeling and its influence mechanism analysis

다국어 초록 (Multilingual Abstract)

To establish a prediction model for the surface quality of silicon nitride ceramic balls under the conical grinding method,and to analyze the influence mechanism of different working conditions on the surface quality under this grinding method.
A simulation prediction model of the grinding quality of the surface of silicon nitride ceramic balls was established basedon MATLAB, through which the three-dimensional morphology and roughness of the surface of silicon nitride ceramicballs were simulated and analyzed. With the increase in abrasive particle size, the abrasive concentration decreases, thesurface roughness of the processed silicon nitride ceramic ball increases accordingly, the number of scratches producedby the abrasive particles on the surface of the ceramic ball after scratching and rolling and its peak/valley difference risesaccordingly, and the proportion of surface defects such as bumps, craters, and directional scratches per unit area of the grindsurface layer increases, and the surface quality decreases significantly. This paper plays an important role in the predictionof surface quality of silicon nitride ceramic ball grinding and the formulation of process methods.