| 摘要 |
PURPOSE:To manufacture a high-performance rare earth bond magnet stably and excellently in productivity and at low cost. CONSTITUTION:In a composition for an R-Fe-B bond magnet, the degeneration of the resin ingredients during molding is prevented by reforming the surface of the magnet powder of 5-50mum thereby making it into a composition for a rare earth bond magnet consisting of this powder and polyamide resin or liquid crystal polymer. At this time, the magnetic volume percentage of the magnetic powder is made 50-80%. Hereby, it becomes possible to manufacture a high-performance rare earth resin coupled type magnet excellently in productivity at low cost. |
