Method for Manufacturing Hot Deformed Magnet using Strong Magnetic field and Interior Permanent Magnet Motor thereof

摘要

The method for manufacturing a hot-extrusion permanent magnet of the present invention includes a primary press pressing process by cold press vertical pressing of the magnet raw material (1), followed by a secondary press pressing process by hot press vertical pressing, and then apply a strong magnet to the magnet raw material (1). A ferromagnetic field hot extrusion process in which the magnetic domain arrangement effect is strengthened by the magnetic field is applied to manufacture the hot extruded magnet 1-1, and the hot extruded magnet 1-1 is embedded in the rotor 120, so that dysprosium ( Dy) and terbium (Tb) have a feature of manufacturing the IPM (Interior Permanent Magnet) motor 100 having a high coercive force without the use of heavy rare earths such as Tb.