Internal Magnetic Abrasive Particles Surface Finishing Based on Permanent Magnetic Field

To internal magnetic abrasive particles surface finishing, the motion of magnetic abrasive particles was influenced not only by the intensity of magnetic induction, but also by the internal diameter, and the magnetic inductive capacity was also an important factor that influences finishing quality. In this paper, under the same experimental conditions, electromagnetic field and permanent magnetic field were respectively used to magnetic abrasive particles surface finishing on thin stainless steel bush and 45 steel bush, new thoughts on inserted permanent magnetic pole and butted permanent magnetic pole were pointed out. The finishing quality of two kinds of work pieces under three different magnetic poles was compared. The results have shown that permanent magnetic pole could decrease the surface roughness Ra of work piece from 1.6 mu m to 0.2 mu m, which could solve the puzzles encountered in internal magnetic abrasive particles surface finishing on magnetic inductive work piece and had good promising application value.