The operation of the motor generates a lot of heat, which is a big problem for magnets. How to ensure the normal operation of the motor without demagnetization? It is very important to choose the right magnet, performance and material. Today, we will introduce the motor magnet to you. I believe you will know how to choose after reading.
NdFeB magnet: as a cost-effective permanent magnet, its temperature resistance is about 200 ℃. At the same time, it can fully meet the working temperature requirements of micro motor and ordinary motor. Because of its high performance, moderate price and low price, neodymium iron boron is the common choice of motor magnet.
SmCo magnet: SmCo is also a high-performance material, with temperature resistance from 250 ° to 350 ° and excellent temperature characteristics. Rare earth elements not only make the magnet have good diamagnetism, but also have good acid, alkali and magnetic resistance. Due to the high cost of materials, the magnet produced is relatively expensive. Compared with NdFeB magnets, SmCo magnets are more suitable for high temperature operation.
Al Ni Co: temperature between 500 ° and 600 °. Some materials have low performance and medium performance, which can compete with almost any motor at 600 ℃.
Ferrite magnet: ferrite can be said to be a good temperature resistant material, temperature resistance of 300 degrees is not a problem, we need to consider whether the magnetic force can meet the requirements.
The above is the introduction of the commonly used motor magnet. The magnet used in the motor is generally tile magnet. Motor magnet size and performance is different, according to customer needs processing into square, round, concave, trapezoid, bread shape and so on.
