The grade of N50 is much higher, and the maximum magnetic energy product is 48-5 1MGOE. The conversion between MGOe and kA/m3 is 1moe = 8ka/m3, and the maximum magnetic energy product of N50 NdFeB material is 400kA/m3.
Difference: The magnetic attraction of N50 is much greater than that of N35 under the same specifications.
Brief introduction of neodymium magnet
Neodymium magnets can be divided into bonded NdFeB and sintered NdFeB. Bonding is actually injection molding, and sintering is vacuumizing and high temperature heating! Neodymium magnet is by far the most powerful permanent magnet. The material grade is N35-N52；; Various shapes can be processed according to specific requirements: round, square, perforated, magnetic tile, magnetic bar, convex surface, trapezoid and so on. Despite these advantages, the surface is easy to rust, so some protective surface treatments are usually needed: nickel plating, zinc plating, gold plating, epoxy resin electroplating and so on. Ordinary neodymium magnets are suitable for ambient temperatures below 80 degrees, but there are several kinds that can withstand high temperatures of 200 degrees. Mainly used in electronics, electrical appliances, packaging, motors, toys, leather goods, automobile machinery and so on.
Magnet classification
Neodymium magnets can be divided into bonded NdFeB and sintered NdFeB. Bonding is actually injection molding, and sintering is vacuumizing and high temperature heating.
differentiate
(1) Ferrite magnet is ferromagnetic metal oxide. As far as electrical properties are concerned, the resistivity of ferrite is much higher than that of metal and alloy magnetic materials, and it also has higher dielectric properties. The magnetism of ferrite also shows high permeability at high frequency. Therefore, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and weak current. It belongs to non-metallic magnetic materials and is a composite oxide (or ferrite) of iron oxide and one or more other metal oxides. The magnetic force is usually 800- 1000 gauss, which is often used in speakers, sound boxes and other instruments.
(2) Neodymium magnet has high cost performance and good mechanical properties; The disadvantages are low Curie temperature, poor temperature characteristics and easy pulverization and corrosion. It must be improved by adjusting its chemical composition and adopting surface treatment to meet the requirements of practical application. NdFeB belongs to the third generation of rare earth permanent magnet materials, which has the characteristics of small volume, light weight and strong magnetism. It is the magnet with the best cost performance at present, and is known as the king of magnetism in the field of magnetism. The advantages of high energy density make NdFeB permanent magnet materials widely used in modern industry and electronic technology. In the naked magnetic state, the magnetic force can reach about 3500 gauss.
applied range
(1) electroacoustic field: speakers, receivers, microphones, alarms, stage stereos, car stereos, etc.
(2) Electronic appliances: vacuum circuit breaker with permanent magnet mechanism, magnetic latching relay, watt-hour meter, water meter, sound meter, reed switch, sensor, etc.
(3) Motor field: VCM, CDDVD-ROM, generators, motors, servo motors, micromotors, motors, vibration motors, etc.
(4) Mechanical equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery, etc.
(5) Medical care: magnetic vibrators, medical instruments, magnetotherapy health products, magnetized oil economizer, etc.
(6) Other industries: magnetized wax remover, pipeline descaler, magnetic clamp, automatic mahjong machine, magnetic lock, door and window magnet, stationery magnet, luggage magnet, leather magnet, toy magnet, tool magnet, craft gift packaging, etc.