Application of NdFeB Permanent Magnet Material in Permanent Magnet Motor

Update:14 Sep 2020

Due to its excellent magnetic properties and high cost performance, Neodymium magnet for sale materials have quickly become the dominant player in the rare earth permanent magnet market since its inception. Its output value accounts for 90% of the world's rare earth permanent magnet material output value, and with the preparation With the continuous improvement of process and production technology, its various properties continue to improve, and the application fields are gradually expanding. Therefore, the amount of NdFeB permanent magnet materials used has become a sign of the level of modernization, and NdFeB permanent magnet materials are still a sunrise industry in the rare earth material industry.

Neodymium iron boron is a kind of rare earth permanent magnet compound composed of rare earth metal neodymium, metal element iron, non-metal element boron and a small amount of added elements praseodymium, dysprosium, niobium, aluminum, gallium, copper and other elements. Simply speaking, it is a kind of magnet. , Also known as magnet. NdFeB permanent magnets have excellent magnetic properties, light weight and low cost, and have a wide range of applications. They are known as the "magnet king" and are by far the most cost-effective magnet material.

The neodymium iron boron permanent magnet has a large magnetocrystalline anisotropy field, high magnetic polarization, and a theoretical magnetic energy product of 64MGOe. Its magnetic properties are more than 100 times higher than the magnetic properties of the magnets used by people in the nineteenth century. The magnetic properties of AlNiCo and AlNiCo are 10 times higher than that of the expensive platinum-cobalt alloy. Its coercivity and energy density are very high, which greatly reduces the size of magnetic material parts and promotes instrumentation and electroacoustic motors. , Computers, mobile phones and other equipment miniaturization, light weight, thinning and high efficiency, improve the performance of products, and promote the production of some special devices; NdFeB has good mechanical properties, easy to cut;

The emergence of NdFeB permanent magnet materials has promoted the progress of human civilization and has made great contributions to social and economic development. This type of material can realize the mutual conversion function of mechanical energy and electromagnetic energy, and has various magnetic physical effects such as magneto-optical effect, magnetic resonance effect, magnetomechanical effect, magnetochemical effect, magnetic biological effect, magnetoresistance effect, and Hall effect. Therefore, it is made into a magnetic functional device and is widely used in the fields of computer, transportation, communication, aerospace, industrial automation and medical treatment.

At present, rare earth permanent magnet motors are the largest application field of neodymium iron boron magnets. The neodymium iron boron rare earth permanent magnet materials are applied to the development of various motors. Because permanent magnet magnets do not have rotor loss and friction, they can be made into high-efficiency energy-saving, The light weight, small size, large torque, low speed drive, stable low noise, long life and maintenance-free motor can significantly reduce the quality of the motor and improve the performance of the motor. Combined with the new technology of power electronics, the rare earth used in Permanent Magnet Components. The application can realize product mechatronics integration, and the new rare earth permanent magnet motors for various purposes have entered a new stage of development.