The basic principle is: under the action of the applied magnetic field, the viscosity of magnetic rheumate increases instantaneously, forming a solid-state Bingham body with a certain plasticity, uniformly mixed in the liquid under the action of the magnetic field of the grinding grain in a semi-solid form distributed in the magnetic rheumating polishing mold surface layer, in the relative workpiece movement to produce a certain shear force, so as to achieve polishing processing.
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