Bonded NdFeB is a new composite permanent magnetic materials and devices 

made of high-molecular polymer (thermosetting epoxy resin, thermoplastic 

engineering plastics,etc.) as a binder by using quick-quenched nanocrystalline 

NdFeB magnetic powder.Mainly applied in IT and office automation, home 

appliances, automotive and other fields of permanent magnet motors and 

sensors.

Bonded NdFeB main molding methods are: Bonded compression and Bonded

 injection molding.

Bonded Compression magnet

• Magnetic powder selection is mainly based on customer requirements (per magnetic property, working temperature, patent etc)

• Different specifications must be made with the corresponding molds

• Surface coating can be selected according to customer requirements (electrophoresis, spraying, impregnation, etc.)

• Different magnetization requirements shall be made different magnetized jig

Bonded Injection magnet

Bonded Injection NdFeB magnet,a kind of new-generation composite material made from permanent magnetic powder and plastic,Injection molding mold production complex, the highest performance in the 6-7MGOe magnet, consistency is good, with PPS or PA12 as a binder, the product is suitable for plastic processing or metal inserts, for electronic expansion valve, air conditioning with the motor etc.

Bonded Compression NdFeB Magnet

• Irreversible flux loss

The reducing proportion of magnetic flux of Magnetized magnet after the high temperature ,then  back to room temperature .For example, the magnet has a magnetic flux of 20 degree C at room temperature is 105 mWb, then the temperature heating up to 100degree C and remain 1 hour,finally cooling back to room temperature 20degree C ,the  magnetic flux reduced to 102 mWb at room temperature of 20 degrees.

Irreversible flux loss = (105-102) /105=2.9%

•Operating temperature

Magnet continuously working at high temperature for 1000 hours, irreversible flux loss of less than 5% of the maximum temperature

• Magnetizing method

Such magnets could be magnetized magnetized multipoles on ID,magnetized multipoles on OD,Diameterial magnetized, Oblique multi-pole magnetized,Radial magnetized, etc.see below diagram.

Applications

Bonded NdFeB magnets are accurate in size, stable in performance and excellent in quality. Pressing mold is precise, magnet with high performance, it widely used for stepper motors, CD-ROM motors, mini-motors, auto motors, air-conditioner,motors,

automatic controlling devices, sensors,drivers,telecom ,general motors, vibration motors, sensors, automated instrumentation, signal, HDD and FDD.