Abstract
The magnetic abrasive finishing (MAF) process is an ultra-precision surface finishing technology. In order to further improve the finishing efficiency and continuity, a magnetic abrasive finishing process using the circulatory system to renew magnetic abrasive slurry was proposed. This study investigated the mechanism of the compound magnetic finishing fluid in the process using the conveyor belt as the carrier to complete the circulation and finishing through simulation and theoretical analysis. The influence of the different distribution states of the magnetic finishing fluid in the conveyor belt and the finishing area on the finishing characteristics is observed and analyzed, in addition to a series of experiments to explore the feasibility of finishing polychlorotrifluoroethylene resin plate through this process. Experimental results show that as the working gap decreases, the distribution width of compound magnetic finishing fluid on the conveyor belt becomes larger, and the distribution of the points of action on the workpiece in the finishing area is significantly different and the area increases, and obtains a higher finishing force and finishing efficiency. In this study, the surface roughness of polychlorotrifluoroethylene resin plate was improved from 274 nm Ra to 34 nm Ra within 15 min.
Highlights
With the development of high-tech industries such as aerospace, die polishing, and semiconductors, smoother surfaces are required
The simulation results show that the magnetic field lines start from one side of the conveyor belt, and the magnetic field lines are parallel to the conveyor belt in the middle of the conveyor belt, and change direction to reach the other side of the conveyor belt
This is consistent with the effect of the magnetic lines of force analyzed above, that is, the magnetic particles in the compound magnetic finishing fluid will form an arched structure on the surface of the conveyor belt under the action of such magnetic lines of force to realize the finishing of the workpiece
Summary
With the development of high-tech industries such as aerospace, die polishing, and semiconductors, smoother surfaces are required. In MAF, the necessary finishing force is generated by the magnetic field in the working area, and high surface finish and precision can be achieved [1,2,3,4]. The effect of the different distribution states of the magnetic finishing fluid on the conveyor belt on the finishing characteristics is discussed, and the difference in the effect of the magnetic finishing fluid in the finishing area under different experimental conditions is observed and analyzed, in addition to a series of experiments to explore the feasibility of finishing polychlorotrifluoroethylene resin plate through this process The characteristics of this magnetic abrasive finishing process and effects of finishing parameters such as magnetic particle size, working gap, and abrasive particle size on the changes in polychlorotrifluoroethylene resin plate finishing were studied
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