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Magnetic Couplings
01-17
/ 2025
In the field of electromagnetics, in addition to using the general SI international system units, CGS Gaussian system units are also used. This sometimes requires unit conversion for friends who come into contact with magnetic materials, and the conversion calculation between these two unit systems is very complex. For the convenience of everyone, we have systematically summarized the units in electromagnetics and the conversion relationships between different unit systems. You are welcome to collect them for future reference.
01-15
/ 2025
The generation of magnetic fields can be divided into two aspects: one is based on the motion current (electromagnetic induction), and the other is based on the spin of the fundamental particles that make up matter. The first type is the magnetic effect of electric current, which is familiar to us. After a wire is electrified, free electrons move in a directional manner to generate a magnetic field. The second type is the magnetic field generated by the substance itself, which is the main topic we will introduce today.
01-10
/ 2025
At present, most mainstream permanent magnet brushless motors use surface mounted or embedded magnetic tiles to form a circular magnetic circuit. However, the splicing magnetic ring has disadvantages such as high precision requirements for magnetic tile processing, difficult assembly, poor smooth transition of magnetic poles, and severe motor noise. Moreover, this structure requires a frame structure made of soft magnetic materials to fix the magnetic tiles, which affects assembly efficiency.
01-08
/ 2025
In recent years, the price fluctuations of rare earth raw materials such as praseodymium neodymium have been significant, causing great difficulties and constraints in terms of cost for neodymium iron boron production enterprises and end application enterprises. Cerium Ce and praseodymium neodymium PrNd, both rare earth elements, have similar structural characteristics and are extremely abundant in the Earth's crust. When used in neodymium iron boron magnets to replace Pr and Nd, it can not only effectively achieve the balanced utilization of rare earth resources, but also significantly reduce the production cost of sintered neodymium iron boron. At present, almost all neodymium iron boron production enterprises in China have been involved in the development and production of cerium magnets. The annual output of new cerium magnets has reached about 50000 tons, and the scale is constantly expanding.
01-05
/ 2025
The application of magnets is often based on the principle of repulsion between the same poles and attraction between opposite poles, or the adsorption of ferromagnetic substances by magnets, such as various magnetic attraction devices, magnetic connection structures, magnetic separation equipment, magnetic transmission equipment, etc.