Experimental evaluation on tribological properties of nano–particle jet MQL grinding. (10th April 2015)

• Record Type: Journal Article
• Authors: Li, Changhe; Zhang, Dongkun; Jia, Dongzhou; Wang, Sheng; Hou, Yali
• Is Part Of: International journal of surface science and engineering. Volume 9:Number 2/3(2015)
• Page Start: 159
• Page End: 175
• Publication Date: 2015-04-10
• Subjects: dry grinding -- nanoparticles -- nanoparticle jet MQL grinding -- flood grinding -- minimum quantity lubrication -- G–ratio -- grinding force -- frictional coefficient -- grinding temperature -- tribological properties -- surface roughness -- surface quality -- tribology -- NC grinding; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Surfaces (Technology) -- Periodicals; Tribology -- Periodicals; 530.417
• Languages: English
• ISSNs: 1749-785X

Abstract

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°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 µm, and the Ra value of nano–particle jet MQL grinding was 0.58 µm. 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.