Abstract：In order to experimentally research magnetic abrasive finishing with magnetic abrasive by gas atomization method, S136 die steel was finished on self-designed micro numerical control finishing machine. Experiments were carried out to research the effect of various factors such as spindle speed, particle size of magnetic abrasive and magnetic field intensity on workpiece surface roughness. The results indicate that the best parameters are 900 r/min of spindle speed, grain size range from 104 to 150 μm of magnetic abrasive and 0.9 T of magnetic field intensity.

Keywords: gas atomization magnetic abrasive; micro numerical control finishing machine; magnetic abrasive finishing; surface roughness