Use of sintered NdFeb permanent magnet material (1)

2023-02-16

Sintered NdFeb Permanent Magnet material, because of its excellent magnetic properties and cost-effective, is widely used in a variety of fields, today take you to understand the use of sintered NdFeb permanent magnet material.

1. Audio equipment such as microphones, pickups, earphones and speakers.
Permanent magnets are used in speakers along with current-carrying coils, which convert electrical energy into mechanical energy and move the speaker cone, which in turn changes the pressure of the surrounding air to produce sound. The microphone works in reverse; The diaphragm is connected to a coil located inside the permanent magnet, and when the sound moves the diaphragm, so does the coil. As the coil moves through the magnetic field generated by the permanent magnet, it produces an electrical signal that has the signature of the original sound.

2. False teeth
Tiny Neodymium Magnets can be used for accessories in corrective devices or to hold dentures together where several teeth are missing. Because of their strength, even tiny neodymium magnets work, and they have higher corrosion resistance when coated.

3. Magnetic coupling pump
The magnetically coupled pump consists of a motor drive shaft and a motor drive shaft with a Strong Magnet ring attached, and a second smaller magnet ring connected to another shaft, which is connected to an impeller located within the larger magnet ring. When the motor turns the drive shaft and one set of magnets, the resulting magnetic field turns another set of magnets, which powers the impeller. For this type of motor, there is no mechanical contact between the motor and the impeller.
Magnetic coupled pumps or magnetic impeller pumps have two major advantages over non-magnetic pumps. Since the impeller is only magnetically connected to the drive magnet and shaft, if the impeller is blocked and stops, the motor can continue to turn without burning out, thus avoiding any lasting damage to the motor. Second, it is relevant to applications where liquids may seep into the motor unit (for example, a pond motor), because for magnetically coupled motors, you can completely separate the motor unit from the impeller, which is usually located in a sealed housing.

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