Bonded neodymium magnets
Plastic Bonded NdFeB Ring Magnet for BLDC Motor
- Composition: Neodymium
- Product Type: Rare Earth Magnet
- Content(percent): 99.9%
- Grade: NdFeB
- Product description: Plastic Bonded NdFeB Ring Magnet for BLDC Motor
Bonded neodymium magnet is composed of a special form of NdFeB powder with a plastic carrier material. They have lower energy product than Sintered NdFeB magnet. Very complicated shapes can be produced in bonded neodymium magnet with very close dimensions.
Bonded neodymium magnet is produced by a special form of NdFeB powder blended with a plastic carrier material, die pressed and then heated. Parts made in this way can be of complex shapes and come off the tools with close tolerances, requiring no further finish machining.
Bonded neodymium magnet is easily machined. Coolants must be used while machining this material in order to avoid spontaneous combustion of powder. Machining this material is to remove a layer of protective coating, and re-coating for corrosion resistance may be necessary.
The corrosion resistance of Bonded NdFeB magnet is considered poor, epoxy coating is mostly common used for bonded NdFeB magnet.
Bonded neodymium magnet is isotropic and can be magnetized in any direction or with multiple poles. Special magnetizing fixtures are required in order to achieve multiple pole magnetization, depending on complexity of design and production rate requirements.