Study On Mechanism And Experiment Of Ceramics Materials Using Magnetic Abrasives Finishing

As a new finishing technology,Magnetic abrasive finishing has been widely used in machinery,electric power,metallurgy,chemical industry and other industries.The parts can greatly improve the surface quality and reduce the surface roughness and improve the service life after the magnetic abrasive finishing.While brittle materials such as ceramic materials,which are widely used in various harsh environments due to their unique high temperature and corrosion resistance,so it is of great importance for improving the surface quality and service life of ceramic materials.And the preparation and recovery of magnetic abrasive particles are also in the important research stage.Through the use of modified XK7136 C CNC milling machine as the magnetic abrasive finishing device in this paper,select rapid solidification atomization preparation of spherical grains of ZrO₂ ceramics and Si₃N₄ maching,design interactive orthogonal experiment to complete the optimization of the processing parameters,and make in-depth analysis of the magnetic abrasive finishing machining of ceramics.The specific research process is as follows:1.Study on theory of magnetic abrasive machining of ceramic materialsBy analyzing the composition of each component of spherical magnetic composite abrasive,the advantages of it are suitable for finishing.By analyzing the distribution of Fe based alloy elements and hard abrasive items,the reasons for their good workability are analyzed,providing theoretical basis for future experiments.In the environment of the external permanent magnetic field,the force analysis of single abrasive particles in the magnetic field is analyzed,and the cutting performance and the magnetic research pressure of the magnetic abrasive brush are analyzed,and the processing parameters raised by the magnetic abrasive pressure are determined by formula deduction.2.Design and study of magnetic finishing equipmentAccording to the performance parameters of permanent magnetic materials,the Nd-Fe-B rare earth permanent magnet materials are used in the design of the pole,the design and calculation of the pole in size using the magnetic circuit law;select two kinds of slot shape design and magnetic modeling in the ANSYS simulation software and simulate the magnetic field distribution and magnetic field density nephogram characteristics,then give results.According to the simulation results,the magnetic pole and slotting shape suitable for ceramic materials are determined.3.Design and analysis of magnetic abrasive finishing for ZrO₂ and Si₃N₄The XK7136 C CNC milling machine is reformed and the furniture is installed to finish the finishing test.The effect of various factors on the processing effect is analyzed through the test.The optimal technological parameters for processing ZrO₂ and Si₃N₄ materials are analyzed by designing orthogonal interaction test.the influence of various factors on the two materials is analyzed by range analysis on the basis of them,.The influence regulations of magnetic finishing ceramic materials is obtained through experiments,which provides theoretical basis and technical support for the future test of magnetic abrasive finishing ceramic materials.4.Design and analysis of magnetic abrasive finishing for ZrO₂ and Si₃N₄the removal mechanism of the magnetic abrasive machining ceramic materials is summarized based on the previous experiments,,and the material removal effect of the magnetic abrasive ceramics materials is deduced by sorting and analyzing the experimental data,mainly including fracture,erasing and running,and the removal methods of the processed ceramic materials are analyzed by the removal effect.The common problems in the previous experiments were studied,and the effect of shot peening pretreatment on the processing effect was analyzed before the test,and the temperature field model was established to analyze the effect of temperature on the processing effect,and the maximum line speed reached during the process was discussed.ZrO₂ and Si₃N₄ materials,which are widely used in ceramic materials,are chosen as test materials In this paper,and the ball composite magnetic abrasive is used for grinding test.The best process parameters of ZrO₂ and Si₃N₄ materials were analyzed by orthogonal experiment.Through experiments,we further explore the mechanism and discuss the common problems in the process.