3. Typical applications of rare earth permanent magnet examples

3.1 audio devices

stereo applications include speakers, headphones, etc..
speaker magnetic circuit structure quarter-magnetic (to do more Alnico Magnet) and the magnetic-type (more so ferrite magnets) two kinds. Application of rare earth permanent magnets, can be applied to the magnetic-and-two kinds of magnetic structure, size and weight are greatly reduced. At present, domestic and foreign production of high-audio equipment manufacturers have introduced some NdFeB speakers, electro-acoustic properties have been greatly improved. China's massive exports of the main speakers in the film magnet high-performance stereo headphones.

In addition to oil-wax 3.2

China's oil contains more wax will extract oil from the formation process, suffered because of oil pressure, temperature and other environmental changes, with the December crude oil in the oil wells and pipelines in the wall precipitation, the annual due - December production and caused great economic losses. Rare-earth permanent magnet will be in a magnetic circuit formed, when crude oil through the magnetic field and thus effectively preventing the wax precipitation. This has greatly reduced the number of production wells-December, higher yields. At present this is a more important application of rare earth one. Apart from the exception of December, but also dilute the permanent magnet production wells salvage relics and so on.

Tags: neodymium magnets Rare Earth Magnets,magnet,permanent magnet Smco magnets