The Development And Experimental Research On Finishing Characteristic Of Magnetic Abrasive Grains

According to the machining principle of magnetic abrasive finishing(MAF) and the theory of precision grinding and tribology/the grinding mechanism have been analyzed. Then, the requirement on the machining performances of magnetic abrasive grains (MAGs) have been put forward. In the paper, following items concerned with MAGs have been studied: composition, structure, shape, size and formation of finishing pressure in grinding process. A series of MAGs including resin binding one, sintering one and one sintered with high-pressure have been developed.Using the magnetic abrasive device, the experiments of MAF with above mentioned MAGs, which aimed at the different materials work-pieces, have been made. The factors effected on the characteristic of MAGs, such as different mixture ratio of ingredients, abrasive materials, grain size, the optimum finishing time, kinds of addtives and its content, endurance and so on, have been analyzed. Consequently, the related datum and curveshave been obtained and the parameters on grinding performances have been determined afterwards.Moreover, economicity and the producing cost of MAGs have been accounted and compared. In the later of the paper, the problems concerned on MAGs to be solved have been raised. It is hope that the results of experiments will lay a foundation for further research of MAGs, rapid development and wide application of the MAGs technology.