Influence of Carbon Nanotubes on Electrolytic Dressing Grinding Performance of a Multi-layer Brazed Coarse-grained Diamond Wheel

被引：0
|
作者：
Wu Q. [1 ,2 ]
Ouyang Z. [2 ]
Yang H. [2 ]
Song K. [2 ]
Deng Z. [1 ,2 ]
机构：
[1] Hunan Province Key Laboratory of High Efficiency and Precision Machining of Difficult to Machine Materials, Xiangtan
[2] Institute of Intelligent Manufacturing, Hunan University of Science and Technology, Xiangtan
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 07期
关键词：
Carbon nanotubes; Electrolytic dressing; Grinding performance; Multi-layer brazed coarse-grained diamond wheel; Oxide film; Ultra-fine cemented carbide;
D O I：
10.3901/JME.2020.07.231
中图分类号：
学科分类号：
摘要：
An electrolyte containing carbon nanotubes (CNTs) is prepared for electrolytic dressing of a multi-layer brazed coarse-grained diamond grinding wheel, and the influence of CNTs on the characteristics of oxide film and the electrolytic dressing grinding performance are investigated. The results indicated that CNTs could significantly improve the electrolytic capacity of electrolyte, and the thickness of oxide film increased by 56.3% to 80.2%, which allowed the worn diamond grits to fall off smoothly. CNTs are adsorbed and distributed in the oxide film during electrolytic dressing, and the adhesion strength of the oxide film increases by 30%-50%, which could improve the polishing effect of the oxide film. The grinding experiment results shows that the grinding force of the multi-layer brazed coarse-grained diamond wheel after electrolytic dressing with electrolyte containing CNTs decreased by 30%. The grinding surface roughness is small and the increase rate is relatively gentle. When the feed speed is 30 mm/s and the grinding depth is 16 μm, the surface roughness is just about 0.15 μm. Moreover, the integrity of surface ground by the brazed wheel after electrolytic dressing with electrolyte containing CNTs is good, there are no cracks and other defects. It could effectively realize the high efficiency and precise grinding of ultra-fine cemented carbide and other difficult-to-cut materials. © 2020 Journal of Mechanical Engineering.
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页码：231 / 239
页数：8
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