Neodymium ferroboron is a third-generation rare earth permanent magnetic material, known as the "permanent magnetic King," which appeared in the 1980s. It has made permanent magnetic materials unprecedented in various fields with high strength magnetism and relatively low cost. reuse. Its crystal structure is tetragonal symmetry consisting of fourteen iron atoms and one boron atom of two neodymium atoms. It combines the most abundant and spontaneously magnetic iron in nature with rare earth neodymium that can hold iron's magnetism in the same direction. This combined neodymium ferroboron magnet is not only magnetic, it can absorb 1,000 times its own weight of iron, but also cheap. The use of rare earth permanent magnetic elements can further reduce the size of electrical instruments and electronic products, greatly improve their performance, and meet the needs of the light, thin and small development trends of electronic products. It also makes it possible for the high efficiency, miniaturization, and lightness of permanent magnetic components of transport vehicles and electromechanical products. For example, replacing the traditional ferrite or aluminum nickel cobalt magnet in the speaker with a neodymium ferroboron permanent magnet can reduce the weight of the speaker by 2-3 times without changing the transmission power, and can also greatly increase the sensitivity of the speaker.
Applying rare earth neodymium iron boron materials to the development of various motors can significantly reduce the weight of the motor, reduce the size of the motor, achieve efficient energy saving effects and improve the performance of the motor, and then combine with new power and electronics technologies. The realization of mechanical and electrical integration of products plays a major role in the application and development of motors.