Ambient air quantity and cutting performances of water-based Fe3O4 nanofluid in magnetic minimum quantity lubrication

• Published in: International journal of advanced manufacturing technology 2021-07, Vol.115 (5-6), p.1711-1722
• Main Authors: Lv, Tao, Xu, Xuefeng, Yu, Aibing, Niu, Chengcheng, Hu, Xiaodong
• Format: Article
• Language: English
• Subjects: Atomizing; CAE) and Design; Computer-Aided Engineering (CAD; Cutting fluids; Deposition; Droplets; Engineering; Industrial and Production Engineering; Iron oxides; Lubrication; Magnetic induction; Mechanical Engineering; Media Management; Milling (machining); Nanofluids; Oil mist; Original Article; Stainless steels; Surface roughness; Tool wear; Vegetable oils; Viscosity
• ISSN: 0268-3768; 1433-3015
• DOI: 10.1007/s00170-021-07231-y

As a typical representative of green lubrication/cooling mode, minimum quantity lubrication (MQL) is widely recognized by the industry for its excellent machining performance. However, the oil mist generated from oil-based MQL machining process has a direct impact on the ambient air quantity and then does harm those who permanently work in this environment. To alleviate this defect, a novel lubrication strategy named magnetic minimum quantity lubrication ( m MQL) allocated with water-based Fe 3 O 4 nanofluid as cutting fluid was proposed. The effect of different magnetic induction on the kinetic viscosity and atomization performance of water-based Fe 3 O 4 nanofluid was investigated. The deposition property of water-based Fe 3 O 4 nanofluid droplets produced by m MQL and LB-2000 vegetable oil droplets produced by MQL were compared, and the corresponding oil mist concentrations (PM10, PM2.5) were also measured. Eventually, the machining performances of water-based Fe 3 O 4 nanofluid m MQL and LB-2000 vegetable oil MQL applied in milling of 430 stainless steel were compared. Results exhibited that water-based Fe 3 O 4 nanofluid presented higher kinetic viscosity and larger droplet size under higher magnetic induction intensity. Water-based Fe 3 O 4 nanofluid m MQL with magnetic induction intensity of 60–100 mT displayed lower PM10 and PM2.5 concentrations, tool flank wear value, milling force, and surface roughness value in comparison with LB-2000 vegetable oil applied in MQL. This water-based Fe 3 O 4 nanofluid used in m MQL showed higher kinetic viscosity and atomized larger droplet-size and thus presented further deposition quantity, which demonstrated alternative cutting performance and lessened the oil mist particles floating in the operating environment.