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NdFeB magnet is a general term for powerful magnets

- Sep 10, 2018 -

Neodymium magnet

Neodymium magnet can be classified into bonded NdFeB and sintered NdFeB. Bonding is actually injection molding, and sintering is vacuumed by high temperature heating! NdFeB magnets are permanent magnets that have the strongest magnetic force to date. The material grades are N35-N52; various shapes can be processed according to specific requirements: round, square, perforated, magnetic tile, magnetic bar, convex, trapezoidal, etc.; despite these advantages, the surface is prone to rust, so it is usually required Make some protective surface treatments: nickel plating, galvanizing, gold plating, epoxy plating, etc. The applicable ambient temperature of a common NdFeB magnet is 80 degrees or less, but there are several types that can withstand a high temperature of 200 degrees. Mainly used in electronics, electrical appliances, packaging, motors, toys, leather goods, automotive machinery and so on.

Market value editor

The core technology of the NdFeB magnet industry is mainly reflected in the manufacturing process, which is embodied in the uniformity, consistency, processing quality and coating quality of its products.

Market use editor

As a third-generation rare earth permanent magnet material, NdFeB magnets have high performance and are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries, especially the development of knowledge economy represented by information technology. It has brought new uses to functional materials such as rare earth permanent magnet NdFeB, which brings a broader market prospect to the NdFeB industry.

The neodymium iron boron magnet is a tetragonal crystal formed of ruthenium, iron, and boron (Nd2Fe14B). In 1982, Masato Sagawa of Sumitomo Special Metal discovered a neodymium magnet. The magnetic energy product (BHmax) of this magnet is larger than that of the samarium cobalt magnet, which is the largest magnetic energy product in the world at that time. [24] Later, Sumitomo Special Metals succeeded in the powder metallurgy process, and General Motors developed a melt-spinning process to prepare NdFeB magnets.  This magnet is the most powerful permanent magnet of today and the most commonly used rare earth magnet. It is widely used in electronic products such as hard disks, mobile phones, earphones and battery-powered tools.

In order to avoid the damage of corrosion, it is necessary to perform protection treatment on the surface of the permanent magnet material, for example, plating with gold, nickel, zinc, tin, and surface spraying epoxy resin. 

Medical function editing

NdFeB is a high-tech material of the National 863 Engineering Project and belongs to high-end rare earth materials. In the medical field, NdFeB has been widely used in physical magnetic therapy.