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General knowledge and application scope of NdFeb magnet

General knowledge and application scope of NdFeb magnet


NdFeb magnet

Neodymium magnet, it is found at present and it is the highest commercial performance magnet, known as magnetic king, with small size, light weight and strong magnetic characteristics, it is the best price-performance magnet so far.        

The maximum magnetic energy product (BHmax) is 10 times higher than ferrite magnet. Its own mechanical processing performance is also quite good. Its operating temperature is up to 200 degrees Celsius. And its texture is hard,  but performance is stable, whch brings very good cost performance, therefore its application is extremely extensive. However, because of its strong chemical activity, it must be coated on the surface.(e.g. Zn,Ni, electrophoresis, passivation, etc.)

NdFeb magnet

Neodymium iron boron magnet basic knowledge

NdFeb magnet can be divided into bonded NdFeb and sintered NdFEB. It is estimated that in the next 20 to 30 years, it is not possible to replace the ndFeb magnetic magnetic material.

The main raw materials for the production of NdFeb magnets are the metal neodymium, pure iron, boron and iron alloy and other additives.

The core technology of ndFeb magnet industry is mainly reflected in the manufacturing process, specifically reflected in the uniformity, consistency, processing quality, coating quality and other aspects.

As the third generation of rare earth permanent magnet, ndfeb magnet has the very high cost performance, its wide application in energy, transportation, machinery, medical, IT, home appliances and other industries, especially with the development of information technology represented by knowledge economy, brings to the functional materials such as rare earth permanent magnet ndfeb industry constantly new USES, this bring ndfeb industry more broad market prospect.


Applications of Ndfeb magnets in medical treatment:

Ndfeb permanent magnet is a high-tech material of national 863 engineering project. What it can produce is a biological magnetic field that mimics the characteristics of the human body's magnetic field, stable performance! Acting on the human body can undertake rectifying magnetic field on the human body itself, and by building up the body's biological electromagnetic energy meridians, promote the bullishness of operation, so as to achieve communication channels and collaterals, increase oxygen to the brain blood flow, reduce the excitability of cerebral cortex nerve, promote the joint tissue metabolism, hypnosis, analgesia, sedation, activating blood and eliminating the effect of anxiety.

Currently, it is commonly used to treat chronic joint diseases such as insomnia, neurasthenia, cervical spondylosis and periarthritis of shoulder, as well as pain and numbness caused by these diseases.

Appearing in the 1980s, it has made permanent magnetic materials reused unprecedentedly in various fields with high magnetic strength and relatively low cost. Its crystal structure is tetragonically composed of two neodymium atoms and fourteen iron atoms and one boron atom. It combines the most abundant and spontaneously magnetic iron in nature with neodymium, a rare earth that holds its magnetism in the same direction.

This bonded neodymium-iron-boron magnet not only has strong magnetism and can lift up to 1,000 times its own weight, but it's also cheap.


The use of rare earth permanent magnetic components can further reduce the size of electrical instruments and electronic products, greatly improve the performance, adapt to the development trend of light, thin and small electronic products demand, also make transport vehicles and mechanical and electrical products of permanent magnetic components of high efficiency, miniaturization, light possible. For example, replacing traditional ferrite or al-Ni-Co magnets with NdFeb permanent magnets can reduce the speaker weight by 2-3 times and greatly improve the speaker sensitivity without changing the transmission power.


Rare earth ndfeb material was applied to all kinds of motor development can significantly reduce weight, can reduce installation dimensions of the motor, and can obtain high efficiency of energy saving effect and improve the performance of the motor, and then combined with the power electronic technology, can realize electromechanical integration products, the application and development of motor plays a major role.

Recently, the 1120 kw permanent magnet motor developed by special TV Research Institute of Shenyang University of Technology is the world's largest rare earth Neodymium iron boron permanent magnet motor. Its mechanical power is as high as 97.5%, which can replace the normal motor with 1-2 power grades larger than it.


Now the rare earth NdFeb material is penetrating into every field of national economy, small to audio, mobile phone, DVD player, large to automobiles, electromechanical equipment, maglev train, etc., ndFEB permanent magnet has shown great application prospect.

The application scope of ndfeb magnet is as follows:

Electroacoustic field: loudspeaker, receiver, microphone, alarm, stage sound, car sound.

Electronic appliances: permanent magnet vacuum circuit breaker, magnetic latching relay, watt-hour meter, water meter, sound meter, reed pipe, sensor.

Motor field: VCM, CDDVD-ROM, generator, motor, servo motor, micro motor, motor, vibration motor.

Mechanical equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery.

Medical care: NUCLEAR magnetic resonance apparatus, medical apparatus and instruments, magnetic healthcare products, magnetizing fuel saver.

Other industries: magnetization anti-wax device, pipe descaler, magnetic fixture, automatic mahjong machine, magnetic lock, magnetic doors and Windows, luggage and bags, leather goods, toys, tools, gift packaging,.

More info about NdFeb magnet, contact NdFeb magnet product manufacturer, Zhongke Magnetic Industry Co.,Ltd..

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