A compression molded magnet, crafted from isotropic NdFeB powder and thermosetting binder, boasts a higher powder filling ratio and superior magnetic properties compared to injection molded magnets. This enables a compression molded magnet to substitute sintered ferrite or Neodymium magnets in select applications. Unlike injection molded counterparts, it better suits regular shapes with modest mechanical strength needs, offering precision for specific industrial uses.
To combat corrosion, particularly in humid conditions, a compression molded magnet receives an epoxy resin coating via electrophoresis or spraying, ensuring lasting performance. As isotropic magnets, they magnetize freely in any direction. Over decades, the compression molded magnet has gained favor, especially for producing thin-walled, high length-to-diameter ratio ring magnets, now essential in brushless DC motors for their adaptability and efficiency.
