Abstract: This paper deals with the pollshing process using magnetic fluid which is realized by the magnetohydredynemic boavior of magnetic fluid that causes the relative velocity between abrasives and the workplace. Based on the study of magnetic fluid polishing before, in this paper a new kind of technology is advanced, in which magnetic foist polishing is replaced by magnetic plied up polishing and acme mechanical vibration in sued. By those change both polishing efficience and surface roughness are improved greatly. Under the new pollshing condition, surface roughness Ra0.005～0.006μm of a steel workpiece and Ra0.005～0.010μm of a copper workpiece are obtained. By moans of experiments, detailed clarifications of various machining factors on the polishing process and the polishing mechanism are also found in this paper.

Key words: Abrasive, Magnetic fluid, Polishing