NingBo BeiLun Meank Magnetics Co., Ltd
NingBo BeiLun Meank Magnetics Co., Ltd

Basic Knowledge of NdFeB Magnets

NdFeB is currently the magnet with the highest commercial performance discovered so far, known as the magnet king, which has extremely high magnetic performance with a maximum energy product (BHmax) more than 10 times higher than ferrite.

Its own mechanical processing performance is also quite good. The highest working temperature can reach 200 degrees Celsius. Moreover, its texture is hard, stable in performance, and has a very good cost performance ratio, so its application is extremely extensive. However, because of its strong chemical activity, the surface must be coated with surface treatment (such as plating Zn, Ni, electrophoresis, passivation).

1. Material characteristics of China NdFeB magnets:

The advantage of NdFeB is high cost performance and good mechanical properties; the disadvantage is that the Curie temperature is low, the temperature characteristics are poor, and it is easy to powder corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment methods to meet practical application requirements.

2. Processing flow of China NdFeB magnets:

Batching → smelting ingot making → powder making → molding → sintering and tempering → magnetic testing → grinding processing → pin cutting processing → electroplating → finished product.

3. Characteristics of China NdFeB magnets:

NdFeB permanent magnet material is a permanent magnet material based on the intermetallic compound Nd2Fe14B. Chinese NdFeB magnets have extremely high magnetic energy product and coercivity, and the advantage of high energy density makes NdFeB permanent magnet material widely used in modern industry and electronics technology, making miniaturization, lightweight, and thinness of instruments, electromechanical devices, and magnetic selection and magnetization equipment possible.

4. Manufacturing process of China NdFeB magnets:

The manufacturing of NdFeB is carried out by powder metallurgy process.

5. Advantages of China NdFeB magnets:

The quality of sintered NdFeB magnets can be judged based on the magnet scale. The shape of NdFeB magnets is made according to their different uses. The production process also goes through many stages. The surface of high-quality sintered NdFeB magnets is generally smooth and has a certain degree of accuracy.

Therefore, whether a qualified sintered NdFeB magnet requires not only qualified functional requirements, but also the control of dimensional tolerances, which directly affects its use. And the guarantee of dimensions depends directly on the processing strength of the factory.

We have been engaged in the production of rare earth Nd magnets for more than 10 years. After years of development in the field of rare earth permanent magnets, we not only produce the highest grade NdFeB power magnets, but also produce various magnet components (such as holding magnets, pot magnets, separation magnets, and other magnetic tools). If you need it, please feel free to consult us.

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