This process refers to enhancing the intrinsic coercivity (Hcj) of magnets through trace element optimization and grain refinement technologies, thereby eliminating or significantly reducing the use of heavy rare earth elements such as dysprosium (Dy) and terbium (Tb).

This refers to the Grain Boundary Diffusion Process (GBDP/DDP), which enables heavy rare earth elements to diffuse three-dimensionally along grain boundaries into the magnet interior with a concentration gradient. Compared to traditional heavy rare earth diffusion techniques, it can reduce heavy rare earth usage and lower production costs.

Due to the low resistivity of NdFeB magnets, eddy currents are generated inside the magnets during motor operation, resulting in higher temperature rise. Eddy currents can be effectively suppressed through measures such as multi-segment bonding and localized cutting.

Coreless motors, also known as coreless DC motors, feature a rotor structure without an iron core, utilizing a hollow cup coil as the armature winding. This design breaks through the traditional form of motor construction and offers characteristics such as energy efficiency, precise control, and drive capability as a type of DC permanent magnet micro-special motor.

Frameless torque motors are a type of specialized motor that eliminate the traditional housing and shaft structure, integrating the annular stator and rotor directly into the mechanical system of the equipment, thereby achieving high-torque direct drive, high-precision control, and compact modular design.