2020 Trending Products Ferrite Ring Speaker Magnet

SDM Magnetics Co., Ltd. is a leading Chinese manufacturer of high quality permanent magnet and magnetic assemblies since 2014. SDM serves a variety of markets include automotive, industrial automation, consumer electronics, green energy, household appliances, and aerospace. To meet the more and more demanding markets, SDM has been concentrating on manufacturing technologies for quality stability and cost reduction. With grain boundary diffusion technology, SDM can offer competitive prices for high coercivity Neodymium magnets. SDM has also built up a strategic cooperation with China's No.1 rare earth miner CHINALCO, which gives us strong and safe backup for rare earth raw materials.
 

Ferrite magnet, otherwise referred as ceramic magnet, is developed by Japanese scholars Dr. Yogoro Kate and Dr. Takeshi Takei in 1930. As nonmetallic type of permanent magnetic material, ferrite magnet is utilizing iron oxide (Fe2O3), Barium Carbonate (BaCO3) or Strontium Carbonate (SrCO3) as raw material and then manufactured through ceramics process. Maximum operating temperature of sintered ferrite magnet can arrive 250 degrees Celsius. Sintered ferrite magnet also has superior corrosion resistance. Sintered ferrite magnet is generally used in various areas in the past several decades and its market share is still very large even the application range of sintered Neodymium magnets is more and more extensive. The most representative applications of sintered ferrite magnet include loudspeakers, permanent magnet (PM) motors and generators.
 

Manufacturing Technique

Magnetic Grade Of Ferrite Magnet

Different Shapes Of Ferrite Magnet

Typical Applications for Ferrite Magnets 
--Motors and Generators 
--Meters 
--Marine applications 
--High temperature applications.
--Lower cost pot magnets and clamping systems 
--Loudspeakers 
--Overband magnets

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