Journal
INTERNATIONAL JOURNAL OF SURFACE SCIENCE AND ENGINEERING
Volume 9, Issue 2-3, Pages 159-175Publisher
INDERSCIENCE ENTERPRISES LTD
DOI: 10.1504/IJSURFSE.2015.068243
Keywords
dry grinding; MQL grinding; nano-particle jet MQL grinding; G-ratio; grinding temperature; tribological properties; surface roughness
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Funding
- National Natural Science Foundation of China [51175276]
- Qingdao Science and Technology Program of Basic Research Projects [14-2-4-18-jch]
- Huangdao District Application Science and Technology Project [2014-1-55]
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Tribological properties of nano-particle jet minimum quantity lubrication (MQL) grinding were mainly evaluated in K-P36 NC surface grinder. Under dry grinding, flood grinding, MQL grinding and nano-particle jet MQL grinding working conditions, the tribological properties were evaluated from the perspectives of grinding force, frictional coefficient, G-ratio, grinding temperature and surface roughness. The results showed that nano-particle jet MQL grinding improved the heat exchange capability; the temperature reduced by nearly 150 degrees C compared with that in dry grinding. Compared with dry grinding, frictional coefficient in MQL grinding, nano-particle jet MQL grinding and flood grinding was decreased successively and respectively by 11.22%, 29.21% and 32.18%. The surface roughness Ra of workpiece prepared by dry grinding was 1.2 mu m, and the Ra value of nano-particle jet MQL grinding was 0.58 mu m. The G ratio of nano-particle jet MQL grinding was 33, the highest of all four conditions. The G-ratio of dry grinding was only 12, which was about twice the value in other conditions.
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