Contact Us
Xiamen Everbeen Magnet Electron Co., Ltd.
Add: Unit H, 4F Rihua Mansion, No. 8 Xinfeng 2nd road, Torch Hi-Tech Zone, Xiamen, China.
Tel: 0086-592-5781916
Fax: 0086-592-5123653
Home > Industry Trends

Industry Trends

magnet selection
Time:11/05/2018
magnet selection

magnet selection for all applications must consider the entire magnetic circuit and the environment. Where Alnico is appropriate, magnet size can be minimized if it can be magnetizing after assembly into the magnetic circuit. If used independent of other circuit components, as in security applications, the effective length to diameter ratio (related to the permeance coefficient) must be great enough to cause the magnet to work above the knee in its second quadrant demagnetization curve. For critical applications, Alnico magnets may be calibrated to an established reference flux density value. A by-product of low coercivity is sensitivity to demagnetizing effects due to external magnetic fields, shock, and application temperatures. For critical applications, Alnico magnets can be temperature stabilized to minimize these effects.