Penetration and deposition characteristics and machining performance of magnetic field assisted nanofluid spray lubrication
A magnetic field assisted nanofluid spray lubrication technology was proposed in order to improve the high oil mist mass concentration environment formed by oil-based spray lubrication during machining. The innovation method can significantly reduce the oil mist mass concentration in the working environment. A magnetic field assisted spray device was constructed,and a water-based Fe3O4 nanofluid was prepared as cutting fluid. The penetration and deposition characteristics of nanofluid droplets under different magnetic induction intensities were analyzed. The oil mist mass concentration and machining performance of magnetized nanofluid mist during milling with 430 stainless steel were comparatively analyzed. Results show that the penetrability of nanofluid droplet was improved and the deposition amount was increased under the influence of magnetic field. The oil mist mass concentration,tool wear,cutting force,and roughness of nanofluid spray lubrication with 60 mT magnetic induction intensity were 66.3％,22.7％,14.6％,and 23.4％ lower than those of vegetable oil spray lubrication,respectively. The nanofluid mist is easy to deposit under the influence of magnetic field and penetrate into the capillary micro crevice in the tool-chip contact interface to play a lubricating and cooling role and inhibit the dispersion of the oil mist.
magnetic field assistancespray lubricationpenetrationoil mist mass concentrationtool wearcutting forceroughness
万方数据
