Study On Magnetic Abrasive Finishing Process Of Using Alternating Magnetic Field

At present,with the development of high-tech industries such as semiconductor,optics and aerospace,for complex shapes of ultra-precision parts of the surface quality and processing efficiency put forward higher requirements,however,the traditional surface processing methods are difficult to achieve.Magnetic abrasive finishing(MAF)is considered a very promising finishing technology,it has risen and developed in recent decades,the processing method can not only process the plane and the curved surface,but also can effectively process the fine surface and the complicated concave-convex surface,and can also be applied to the inner and outer surface processing and deburring of the round tube.The traditional planar magnetic abrasive finishing method in the processing,the agglomeration of abrasive,magnetic brush deformation after contact with the workpiece,are hindered the realization of ultra-precision machining reasons.Magnetic abrasive process(MAF)process using an alternating magnetic field that causes fluctuations in magnetic clusters,this is not only be able to transport abrasive to the surface,used to polish the workpiece,but also to achieve the surface abrasive cycle and update,to ensure the stability of grinding tools.In this study,the process is used to finishing the surface of SUS304 stainless steel plate and 5052 aluminum alloy plate.The distribution of magnetic flux density in the processing area under different magnetic field frequencies and the finishing force at different condition was measured.And through experiments to determine the different factors on the processing characteristics,and get the best experimental program and processing parameters.In the present research,the surface roughness of 5052 aluminum alloy plate was improved from 345.33 nm to 7nm by this process.