Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics

doi:10.1007/s00170-017-1102-7

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	Experimental investigation on electrical discharge diamond grinding of RB-SiC ceramics
	Rao, X. S.; Zhang, F. H.; Li, C.; Li, Y. J.
	2018
发表期刊	International Journal of Advanced Manufacturing Technology
ISSN	0268-3768
卷号	94 期号:2019-05-08 页码:2751-2762
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.
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
DOI	10.1007/s00170-017-1102-7
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	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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