Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics
文献类型：期刊论文
| 作者 | Rao, X. S.; Zhang, F. H.; Li, C.; Li, Y. J. |
| 刊名 | International Journal of Advanced Manufacturing Technology
 |
| 出版日期 | 2018 |
| 卷号 | 94期号:2019-05-08页码:2751-2762 |
| 关键词 | Electrical discharge diamond grinding RB-SiC ceramics Surface quality Material migration bonded silicon-carbide material removal rate surface-roughness spark assistance micro-edm breakdown optimization prediction electrodes composite Automation & Control Systems Engineering |
| ISSN号 | 0268-3768 |
| DOI | 10.1007/s00170-017-1102-7 |
| 英文摘要 | The reaction-bonded silicon carbide (RB-SiC) ceramics are very difficult to be machined by conventional techniques. In this work, a hybrid process termed electrical discharge diamond grinding (EDDG) was applied to the precision grinding of RB-SiC ceramics considering its weak electrical conductivity. Focus of investigation was especially placed on the effects of grit sizes and polarities of grinding wheel on the surface quality. The machined surface texture and roughness were measured by confocal scanning laser microscope. The surface texture topography and cross-section profile at different grit sizes and polarities were analyzed. The results show that the dominant state of grinding or EDM decides surface texture of machined surface and consequently affects the surface roughness. The surface morphology and subsurface damage were measured by scanning electron microscopy and energy dispersive spectrometer (EDS). The influence of grit sizes and polarities of grinding wheel was focused on the resolidified zone of the machined surface. The material migration phenomenon was found. The subsurface damage was also analyzed by detecting the polished cross-sections, and the depth of subsurface was determined by analyzing the element distribution with EDS spectrums. At last, the formation mechanism of machined surface and the effects of grit sizes and polarities of grinding wheel on machined surface quality were discussed from the viewpoint of discharge energy based on EDM theory. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60986]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Rao, X. S.,Zhang, F. H.,Li, C.,et al. Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics[J]. International Journal of Advanced Manufacturing Technology,2018,94(2019-05-08):2751-2762. |
| APA | Rao, X. S.,Zhang, F. H.,Li, C.,&Li, Y. J..(2018).Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics.International Journal of Advanced Manufacturing Technology,94(2019-05-08),2751-2762. |
| MLA | Rao, X. S.,et al."Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics".International Journal of Advanced Manufacturing Technology 94.2019-05-08(2018):2751-2762. |
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