Performances of Al2O3/SiC hybrid nanofluids in minimum-quantity lubrication grinding

• Published in: International journal of advanced manufacturing technology 2016-10, Vol.86 (9-12), p.3427-3441
• Main Authors: Zhang, Xianpeng, Li, Changhe, Zhang, Yanbin, Jia, Dongzhou, Li, Benkai, Wang, Yaogang, Yang, Min, Hou, Yali, Zhang, Xiaowei
• Format: Article
• Language: English
• Subjects: Aluminum oxide; CAE) and Design; Computer-Aided Engineering (CAD; Engineering; Grain size; Grinding; Industrial and Production Engineering; Lipids; Lubrication; Mechanical Engineering; Media Management; Nanofluids; Nanoparticles; Nickel base alloys; Original Article; Surface roughness; Synergistic effect; Workpieces
• ISSN: 0268-3768; 1433-3015
• DOI: 10.1007/s00170-016-8453-3

The present research investigated the lubrication performances of Al 2 O 3 /SiC nanofluid minimum-quantity lubrication (MQL) grinding in accordance with recent technologies used in conducting minimum-quantity lubrication grinding with nanofluids. The mean grain size of the Al 2 O 3 and SiC nanoparticles (NPs) was set to 50 nm, and the difficult grinding Ni-based alloy was used as the workpiece material in the experiment. Grinding force was measure by using a three-component dynamometer and then used to calculate grinding force ratio ( R ). Workpiece surface roughness was measured by a roughness tester. Five groups of NPs were mixed with synthetic lipids at a mass fraction of 6 %. The lipids were then used as the grinding fluid for the nanofluid MQL grinding. Results showed that, compared with pure SiC NPs, pure Al 2 O 3 NPs obtained lower R  = 0.3, lower specific grinding energy ( U  = 75.93 J/mm 3 ), and lower surface roughness ( Ra  = 0.386 μm), indicating better lubrication performance. The mixed NP consisting of Al 2 O 3 and SiC NPs achieved even lower R and surface roughness than pure NPs because of the “physical synergistic effect.” The optimal ratio of the effect of mixed NPs was explored based on this finding. The Al 2 O 3 /SiC (2:1) mixed NPs obtained the smallest R  = 0.28 and specific grinding energy ( U  = 60.68 J/mm 3 ), thus indicating the best lubrication performance. Therefore, 2:1 is the optimal ratio for mixed NPs.