RARE EARTH BOND MAGNET, COMPOSITION THEREFOR, AND METHOD OF MANUFACTURING THE SAME

摘要

A composition for a rare earth bond magnet consists of rare earth magnet powder and resin ingredient, and a magnet whose moldability, performance and corrosion-resistance are improved by adding chelating agent alone or chelating agent and antioxidant to the composition. By controlling the values of the material properties of the composition, troubles when molding the magnet can be suppressed, and the productivity of the magnet can be improved. With respect to a composition for extrusion molding, by using at least two kinds of resin, the moldability can be improved and the amount of production can be increased. Further, by using extrusion molding through cooling and setting and using hot compression molding as the manufacturing method of the magnet, the magnet is endowed with a high density and a high performance.