Three-body abrasion : influence of applied load on bed thickness and particle size distribution in abrasive processes

Lapping experiments at various loads showed a decreasing bed thickness with increasing applied loads. Comparison of these results with the particle size distribution, measured before and after abrasion, revealed that at higher applied loads more particles will fracture during abrasion. This also may be the cause of the slightly decreasing bed thickness in time. A quantitative interpretation of the particle size distributions was not possible, since there was a significant amount of glass present in the slurry. Nevertheless, it was clear that the actual particle size distribution under the workpiece is different from the original particle size distribution

Fracture characteristics of abrasive particles

Particle degradation occurs during abrasive processes like three-body abrasion and erosion. With a single particle crusher strength tests have been performed with AI2O3 powders in order to gain more information about the fracture characteristics of the abrasive particles. The mean fracture force increases with increasing particle size and is larger for the used powders than for the original powders. These results are compared with degradation measurements on recycled alumina powders in erosion processes. Modelling considerations are briefly discussed in this paper

Three-body abrasion : influence of applied load on bed thickness and particle size distribution in abrasive processes

Lapping experiments at various loads showed a decreasing bed thickness with increasing applied loads. Comparison of these results with the particle size distribution, measured before and after abrasion, revealed that at higher applied loads more particles will fracture during abrasion. This also may be the cause of the slightly decreasing bed thickness in time. A quantitative interpretation of the particle size distributions was not possible, since there was a significant amount of glass present in the slurry. Nevertheless, it was clear that the actual particle size distribution under the workpiece is different from the original particle size distribution