SmCo Magnet Motor VS NdFeB Magnet Motor, Samarium Cobalt Magnet motor VS NdFeB Magnet Motor
What is the difference between a motor made of samarium cobalt magnet and a motor made of NdFeB?
As the third generation rare earth permanent magnet, NdFeB magnet has very high performance. It is widely used in energy, transportation, machinery, medical, IT, household appliances and other industries. Especially with the development of knowledge economy represented by information technology, NdFeB magnet has brought new applications to the rare earth permanent magnet, NdFeB industry and other functional materials, which has brought new applications for neodymium magnet and a broader market prospect for boron industry.
SmCo magnet is a kind of magnetic material made by mixing Sm, Co, and other rare earth metal materials, melting into the alloy, crushing, pressing and sintering. It has high magnetic energy product and very low-temperature coefficient. The highest working temperature can reach 350℃, and the negative temperature is unlimited. When the working temperature is above 180℃, the maximum magnetic energy product and temperature stability and the maximum magnetic energy product are obtained. The chemical stability is higher than that of NdFeB permanent magnet. It is widely used in aerospace, defense, military, microwave devices, communications, medical equipment, instruments, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes and so on.
We all know that samarium cobalt magnets and neodymium ferro boron magnets are widely used, some of them have similar properties, but some of them have very different properties. Today we’ll look at the difference between a motor made of a samarium-cobalt magnet and a motor made of a neodymium magnet.
SmCo magnets have lower magnetic energy density than neodymium magnets, so the air gap magnetic field required for energy conversion is not as strong as NdFeB magnets, so the capacity of permanent magnet motors is smaller. After the advent of NdFeB permanent magnet, great changes have taken place. High-performance NdFeB magnets produce the magnetic field, not only can achieve the magnetic field intensity generated by current excitation, but also far more than current excitation, so that thousands of large and medium-sized motors can be manufactured.
1. Using rare earth permanent magnet rotor without excitation coil and core, no loss, no heating and other characteristics to replace the common motor, can reduce the size, reduce weight and improve efficiency. If the permanent magnet motor is used to replace the traditional motor in the automobile, the volume can be reduced by 40%-70%, the efficiency can be increased by more than 50%, and the copper and electricity can be saved. It can save more than 90% of electricity by replacing the electromagnet of electromagnetic switch and the solenoid valve which are widely used in electric equipment with the permanent magnet.
2. Using the magnetic levitation principle to make a new type of friction-free bearing instead of the traditional bearing, its energy consumption can be reduced by more than 90%.
3. Using magneto hydrodynamic power generation, when high-temperature and high-speed airflow passes through a strong magnetic field, the airflow becomes plasma conductive fluid due to high-temperature ionization and cuts the magnetic force line to generate induced potential and energy.
From the above, we can see that the neodymium magnet made of the motor is better than the SmCo magnet made of the motor.
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