NdFeB powerful permanent magnet is the biggest application of neodymium(二)

Our country vigorously develops new energy vehicles, in which electric vehicles are considered to be the best option to replace fuel vehicles. But in order to replace fuel vehicles, we must achieve the performance of fuel vehicles. This requires strong power, energy saving and fast speed of motor. At present, NdFeB magnets are widely used in the field of high-end electric vehicles, which bring extraordinary performance to electric vehicles. For example, the new BYD Han car produced by China’s BYD Company takes only 3.9 seconds to accelerate 100 km. What’s more, it only takes 1.9 seconds for Tesla Roadster to accelerate 100 km, which is difficult for fuel vehicles to achieve.

NdFeB magnet

In addition to new energy vehicles, when it comes to the name card of China’s modern industry, you can certainly think of high-speed rail! The speed of high-speed railway is not achieved by internal combustion engine, but by motor, which brings quiet, high-speed and strong power. In addition to high-speed rail, motor cars, subways and other rail transit vehicles are also driven by motors, and the motors made of NdFeB magnets will occupy a large share in the future. This is not the end, now the sea ships also have the trend of using electric motor drive. All countries in the world are developing all electric propulsion ship system, changing the power of the ship into electric motor drive, and the internal combustion engine is only used for power generation, even the internal combustion engine is replaced by nuclear energy, so as to completely develop the environmental protection electric ship. This requires that the power of the motor is very strong. At present, the power of the motor made of NdFeB magnet has exceeded one million watts, that is, one motor is equivalent to the power of hundreds of living room air conditioners, or the power of ten family cars. Such a strong driving force will inevitably bring about dynamic changes in the field of shipping in the future.

In addition to these, NdFeB magnet has a very wide range of applications in the field of wind power generation, and it is worth looking forward to whether it will be widely used in other power generation fields in the future. The frequency conversion air conditioner installed in our home needs NdFeB magnets, many small household appliances need NdFeB magnets, many medical facilities in hospitals need NdFeB magnets, future electric robots also need NdFeB magnets, and aerospace needs NdFeB magnets more. In 2011, the United States launched alpha magnetic spectrometer 2 with the last space shuttle to search for antimatter and dark matter. As the space shuttle is about to be decommissioned, the later maintenance of the magnetic spectrometer is difficult. The international cooperative R & D team decided to give up the superconducting magnet cooled by liquid helium and replace it with the NdFeB permanent magnet made in China. The inner diameter of the magnet is 1.2 meters, the weight is 2.6 tons, and the central magnetic field intensity reaches 1370 Gauss. Relatively speaking, the magnetic field intensity on the earth’s surface is about 0.5-0.6 Gauss. When the launch, a large number of domestic media reports, triggered a wave of pride! For nine years, the magnetic spectrometer is still working on the international space station.

For such a strong magnet, the raw materials are mainly from China, and the production is mainly carried out in China. In order to obtain raw materials more conveniently, large companies from Japan, Europe and the United States have set up joint venture factories in China, providing a steady stream of powerful and widely used NdFeB magnets for the world. With the rapid development of this field, China’s new energy industry has also been an important support, so there is no need to worry about other countries.

 


Post time: Jan-28-2021
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