Contrastive Experiments on Up and Down Grinding of Unidirectional Ceramic Matrix Composite C/SiC with Variable Angle
This paper investigated the impact mechanism of grinding forces and machined surface quality on unidirectional C/SiC by a regular dodecagon-based grinding track method.Comparative analysis reveal that up grinding reduces tangential forces by 10％～25％,normal forces by 30％～50％,and surface roughness by 25％～65％,compared to down grinding.Moreover,the fiber grind-ing angle has a pronounced impact on the grinding characteristics.When the fiber grinding angle is as 0°～90°,the magnitude ranking of grinding force from large to small is as 60°,30°,90°,0°.When the fiber grinding angle is as 90°～180°,the magnitude ranking of grinding force from large to small is as 120°,90°,150°,180°.The order of surface roughness Sa on the machined surface aligns with the grinding force magnitude ranking as 0°,150°,120°,30°,60°,90°.A pronounced material deformation rebound effectiveness is observed in C/SiC grinding.A comparative analysis of surface microstructures at diverse fiber grinding angles,and a grinding material removal model was introduced.
compositegrinding angleup and down grindingmaterial removal model
万方数据
维普
