Powerful motor magnets-motor magnets-strong magnets permanent-Kariqi

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www.courage-magnet.com

Motors currently mainly use NdFeB strong magnetic materials, including sintered NdFeB magnets and bonded NdFeB magnets. Permanent magnet motors using neodymium iron boron magnets as motor magnets have the advantages of small size, light weight, high moment to inertia ratio, high servo system response, high power and speed/weight ratio, high starting torque, and saving electricity. The shape of magnets used in motors is mostly tile type. Rings or trapezoids can be used in different motors, such as permanent magnet motors, AC motors, DC motors, linear motors, brushless motors, etc. Motor manufacturers usually use motor magnets and motor magnets. To drive by attraction and repulsion, radially symmetrically magnetized tile-type motor magnets are generally selected to form a ring shape. Because sintered NdFeB is an anisotropic material, it is difficult to create complex magnetization directions. At present, there are also radial magnetization products for sintered NdFeB motor magnets, but there are many restrictions on size and grade, and the magnetic properties are extremely unstable and the consistency is very poor. At the same time, the mold coils and magnetizing fixtures are very expensive, so Very few manufacturers will choose it.
At present, the demand for motor magnets is very large, both at home and abroad. Magnets are the core components of micro motors, small and medium-sized motors and large generators, and NdFeB permanent magnet materials can be used. NdFeB permanent magnet motors do not have excitation wire coils and iron cores. In order to achieve the same air gap magnetic field, the size of the magnet is smaller than that of the original magnetic field pole, and there is no loss or heat. Therefore, in order to obtain the same output characteristics, the volume and weight of the complete machine can be reduced a lot or the same volume, weight, and output power can be increased a lot.
Special applications use samarium cobalt motor magnets, and low-end products also use ferrite motor magnets.