Analysis of electric field electrode distribution on dielectrophoresis abrasive flow for polishing internal surface of ceramic workpiece
| Autor: | Tao Zheng, Xu Wang, Xueliang Zhang, Binghai Lyu, Ju Long Yuan, Deng Qianfa |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Abrasive Polishing 02 engineering and technology Surface finish Dielectrophoresis Industrial and Manufacturing Engineering Computer Science Applications 020901 industrial engineering & automation Control and Systems Engineering visual_art Electric field Electrode visual_art.visual_art_medium Surface roughness Ceramic Composite material Software |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 113:2355-2367 |
| ISSN: | 1433-3015 0268-3768 |
| Popis: | For the polishing of the internal surfaces of thin-walled ceramic parts, a dielectrophoresis abrasive flow polishing (DAFP) method is proposed. A non-uniform electric field is applied on the outer wall of the ceramic part, and abrasives in polishing fluid are polarized in the region of non-uniform electric field. The polarized abrasives are moved to the internal surface of ceramic parts by dielectrophoretic forces, so that more abrasives will effectively participate in the process of polishing internal surface of the ceramic part. Theoretical analysis of the forces on the abrasive particle is carried out. The flow field and electric field of different electrode ratios are simulated using COMSOL, the optimal dielectrophoretic force coefficient (e1), and thickness of active layer (δ3 = 2.15 mm) can be obtained when ER = 3. The original internal surface roughness of the workpiece is at 208 ± 5 nm. After 10 h of polishing, the roughness values of the inner surface of the workpiece reached 23 nm and 51 nm respectively, with and without dielectrophoresis. The efficiency of dielectrophoresis abrasive flow polishing of the inner surface of ceramic workpieces has been validated. |
| Databáze: | OpenAIRE |
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