The shape of the neodymium disc magnets are similar to that of a coin, it is a conventional name for circular magnets of various diameters and thicknesses. Generally, the neodymium disc magnets are axially magnetized. One circular flat face is a north pole, the other circular flat face is a south pole, the distance between the flat faces is the distance between the poles. Neodymium disc magnets have many uses in daily lives, mainly because they require much less weight and volume than ceramic disc magnets with equivalent magnetic strength.
Common Applications of Neodymium Disc Magnets
Apparel and jewelry industry
Neodymium disc Magnets play an important role in the apparel and jewelry industry. The emergence of neodymium disc Magnets provides designers with new ideas, jewelry clasps, clothes buttons and bag buckles are made by neodymium magnets. Buckles made of neodymium magnets usually need to be wrapped in a metal casing. Even so, it should not be washing the magnetic buckle in the washing machine on a high speed gear, excessive rotation will cause it to shatter. Some dryers will operate at temperatures as high as 80 ℃, which may also demagnetize the neodymium magnets. The magnetic grade of neodymium magnets for these purposes usually choose N35, the magnets with high performance may make the magnetic buckle difficult to open.
Neodymium disc magnets are an indispensable part of electronic products. Modern electronic devices are designed to be smaller and more portable, the high magnetic energy product of neodymium magnets makes it possible to reduce the weight of modern electronic devices, even very small size such as D5 mm*2 mm can provide the required magnetic force for electronic devices. It should be noted that neodymium magnets are easily corroded, but sometimes electronic products have to face some special environments like hot and humid air in saunas or high-salt environments during diving. At this time, it is necessary to choose a coating that can resist corrosion, NiCuNi coating is usually a good choice. We produce some neodymium disc magnets for company who are producing electronic devices like Samsung Electronics, LG, those magnets need to pass 48 hours or 60 hours of salt spray test and related hot and humid resistance tests.
In electroacoustic products, designers usually design magnets as ring, disc or special shapes, the disc magnet is undoubtedly the most cost-effective design. Most of the Bluetooth earplugs or earphones on the market are designed with neodymium magnet discs. Big headsets or speakers are driven by professional equipment, while signals from small earphones are usually provided by low-power portable devices, which requires small earphones to have higher sensitivity. High-sensitivity headphones require magnets with powerful magnetic performance, the magnetic grade like N48, N50, N52 are welcome in that field.