Numerical simulation analysis of micro-hole based on abrasive flow polishing

Abstract

In order to study the performance of abrasive flow polishing on the micro-holes, the polishing process of abrasive flow with different abrasive particle sizes was carried out by using computational fluid dynamics. The distribution of fluid turbulence intensity and abrasive particle velocity, fluid turbulence dissipation rate and kinetic energy of abrasive particles were obtained and analyzed. The simulation reveal that the material removal rate is proportional to the size of abrasive particle size, while the surface quality is inversely proportional to it. Therefore, the appropriate size of abrasive particle should be selected according to the initial surface roughness of the workpiece. The research results have certain guiding significance for practical production.

An optimization study of polishing efficiency of blisk and its technological parameters

“…In order to improve polishing quality of workpiece surface, Chen et al 13 developed a magnetic and elastic grinding material to polish the inner surface of workpiece under attraction of ring magnet and driving of turning pole, which reduced polishing force and avoided deep scratches on workpiece surface. Liu et al 14 conducted a numerical simulation in order to improve polishing quality of abrasive particle flow in micropore canal, acquired the optimal combination of process parameters via an orthogonal test and improved the polishing quality for abrasive particle flow in micropore canal. Qi et al 15 constructed a prediction model for material removal depth through abrasive belt polishing, and improved the model precision in full consideration of the influence of abrasive particle characteristics on removal depth.…”