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Do you know the application field of strong magnets? After reading long knowledge

Electroacoustic field: speakers, receivers, microphones, alarms, stage sounds, car audio, etc.



Applications in transportation tools: Trains made by the principle of homosexual repelling are called maglev trains; modern luxury cars require 15-70 permanent magnets, such as: windshield wiper motor, oil pump motor, window motor, door Lock motor, defogging motor, automatic steam controller, starter motor, etc.



In medicine, the use of nuclear magnetic resonance can diagnose abnormal tissue and determine disease. This is our familiar MRI technology. The basic principle is as follows: the nucleus has positive electricity and spin motion. Usually, the arrangement of the spin axis of the nucleus is irregular, but when it is placed in an external magnetic field, the spatial orientation of the nuclear spin transitions from disorder to order. The magnetization vector of the spin system gradually increases from zero, and when the system reaches equilibrium, the magnetization reaches a stable value. If the nuclear spin system is subjected to external influences at this time, the RF excitation of the nucleus at a certain frequency can cause a resonance effect.



Applications in microwave communication technology: used in radar technology, satellite communication, remote telemetry, electronic tracking, and electronic countermeasure technology. Magnetron tubes, magnetron traveling wave tubes, cathode ray tubes, circulators, etc. are all used. NdFeB.



Tool hardware magnet application: magnetized anti-wax, pipe descaler, magnetic fixture, automatic mahjong machine, magnetic lock, door and window magnet, luggage magnet, leather magnet, toy magnet, tool magnet, craft gift packaging.



Applications in magnetic therapy and fitness equipment: applications in magnetic therapy and fitness equipment: magnetic therapy cups, magnetic balls, magnetic therapy machines, magnetic therapy shoes, magnetic therapy caps, magnetic therapy bracelets, necklaces, etc. To develop faster medical equipment, magnetic resonance imaging (MRI) is used in 3-4 tons per unit. Imagine how much the amount of MRI NdFeB should be used in every hospital in China!



New energy vehicles have a great role in promoting the NdFeB industry: electric vehicles have high torque density, high operational reliability and good torque control capability. Therefore, NdFeB requires high magnetic energy product and high coercivity. Force and high working temperature. Since the magnetic energy product and the coercive force are opposite each other, a compromise is required. NdFeB magnets with a grade of N42 are generally used for automotive motors.



Magnetic levitation: mechanical equipment: magnetic separation, magnetic separator, magnetic hoist, magnetic machinery, etc., magnetic suspension centrifugal blower is a kind of fan, it is an efficient way to integrate magnetic levitation technology and high-speed motor technology into traditional wind turbines. Energy-saving and environmentally friendly new blowers are widely used in ventilation of factories, mines, tunnels, etc.; urban sewage treatment; wind tunnels and other industrial projects.


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