Isotropic polymer bonded NdFeB magnets – The raw material powder is manufactured by rapid quenching of prescribed alloys into nanocristalline flakes which are subsequently annealed for optimum magnetic properties.
Shortly after the invention of rapidly quenched NdFeB magnet powders, MPCO had started to develop polymer bonded magnets from these powders.
By 2009, MPCO had completed the development of high performance, high demensional accuracy bonded NdFeB utilizing its original manufacturing techniques, such as mixing, injection, coating, and magnetization.
MPCO is the first to commercialize injection molded Nd-Fe-B magnets in China.
MPCO also developed epoxy electro deposition coating and high heat resistant magnet grades.
Applications of Isotropic polymer bonded NdFeB magnets
Isotropic polymer bonded NdFeB magnets are isotropic bonded magnets.
Unlike anisotropic bonded magnets which require magnetic field alignment, these magnets are not magnetized during the pressing.
Therefore, it is easier to prevent magnetic particle contamination.
Taking advantage of its high cost performance, Isotropic polymer bonded NdFeB magnet is being used in various applications, including personal computers, cell phones, and various sensors.
Cell phone vibration motors
Actuators for electrical equipment
HDD spindle motors
Forming methods of Isotropic polymer bonded NdFeB magnets
Isotropic polymer bonded NdFeB magnets are formed by either injection molding or compression molding.
Injection molding provides flexible shapes and compression molding provides higher magnetic properties.