1. Introduction of Rare Earth Nd-Fe-B Magnets
Rare earth permanent magnet NdFeB is the most powerful permanent magnet in modern magnets. Its potential magnetic properties are extremely high and it can absorb weights thousands of times its own weight. The mechanical properties of Nd-Fe-B magnet are better than other magnets, and it is easier to cut and drill holes and process complex shapes. Its shortcomings are poor temperature performance, high magnetic loss at high temperature and low maximum working temperature. Usually about 80 degrees Celsius, after special treatment, its maximum operating temperature can reach 200 degrees Celsius. Because the material contains a lot of neodymium and iron, it is easy to rust, which is also a major weakness. Therefore, Nd-Fe-B magnets must be coated. Nickel (Ni), zinc (Zn), gold (Au), chromium (Cr), epoxy resin (Epoxy) can be electroplated. NdFeB permanent magnet material is a permanent magnet material based on intermetallic compound Nd2Fe14B. Nd-Fe-B permanent magnet materials have been widely used in modern industry and electronic technology due to its high magnetic energy product and straightening force and high energy density, which makes it possible to miniaturize, lightweight and thin the instruments, electro-acoustic motors and magnetic separation magnetization equipment.
2. The relationship between the adsorptive strength and magnetic flux of rare earth neodymium magnets;
The larger the area of the adsorption surface, the stronger the adsorption capacity.
3. N38 magnet magnetic reference
The following NdFeB magnets are square NdFeB magnets beginning with F and circular NdFeB magnets beginning with D.
N38/F8*5*2, surface magnetism 3240gs.
N38/D12*d4.2*2, magnetic field strength 2440Gs
N38/NI/D20*10, surface magnetism 3900Gs.
D45 * D8 * 10, table magnetism 2240GS.
D8.5*D5.3*5, table magnetic size 2930GS.
D5*33, surface magnetic field 3680GS.
D6*2.5, table magnetism 3810GS.
D3*8, surface magnetic field strength 3320 Gs.
D100*d56*10, table magnetism 2540Gs
D100*5.8, table magnetism 640Gs
D14*d18.8*9, table magnetism 4900Gs.