Study of small cracks on nanocomposite ceramics cut by WEDM
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- 作者：Chengmao Zhang
- 关键词：TiN/Si3N4 nanocomposite ceramics ; Wire electrical discharge machining ; Small cracks ; Thermal stress damage ; Crack
- 刊名：The International Journal of Advanced Manufacturing Technology
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：83
- 期：1-4
- 页码：187-192
- 全文大小：1,142 KB
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1. School of Mechanical Engineering, Linyi University, Shandong, 276005, People’s Republic of China - 刊物类别：Engineering
- 刊物主题：Industrial and Production Engineering
Production and Logistics
Mechanical Engineering
Computer-Aided Engineering and Design - 出版者：Springer London
- ISSN：1433-3015
文摘
We studied and analyzed the phenomenon of small cracks on the surface of the TiN/Si3N4 nanocomposite ceramics when cut by wire electrical discharge machining (WEDM). When power density of plasma in the discharge channel reaches a certain value, gasification cracks will appear. The effect of small cracks on heat transfer process when the TiN/Si3N4 nanocomposite ceramics are machined by WEDM was also analyzed. Results show that these small cracks make the surface heat source change toward the body heat source, so thermal stress damage happens and the crack propagation depth increases rapidly when the TiN/Si3N4 nanocomposite ceramics are machined by WEDM.