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Determine the powerful magnet performance of three factors of _ ndfeb strong magnet manufacturers

by:Newland     2020-04-01
Powerful magnet, is refers to the ndfeb magnet. It compared with the ferrite magnets, alnico, samarium cobalt magnetism can greatly over several other magnets, ndfeb magnets can adsorb itself, 640 times the weight of the weight, so the ndfeb by outsiders often referred to as a powerful magnet. Mainly from the following three performance parameters to determine the performance of the magnet: 1. Remanence Br: permanent magnets by the saturation magnetization to technology, and remove the external magnetic field, the retention of Br is called residual magnetic induction intensity. 2. Coercive force Hc: make the saturation magnetization to the technology of permanent magnet B down to zero, need to add the reverse magnetic field intensity is called magnetic coercive force, referred to as coercive force. 3. Magnetic energy product BH: represents the magnet in the air gap space ( Two pole magnet space) The magnetic energy density, air gap the magnetostatic energy per unit volume. Due to the product of the energy is equal to the magnet Bm and Hm, so called magnetic energy product.
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