NdFeB magnetic materials, as the latest result of the development of rare earth permanent magnetic materials, due to its excellent magnetic properties and is known as the "king of magnets". NdFeB magnetic material is an alloy of neodymium and iron oxide. It is also known as magnet steel. NdFeB material contains a large amount of neodymium and iron, easy to rust. So NdFeB magnets must be surface coated. Surface chemical passivation NdFeB
Chemical passivation is currently one of the good solutions. NdFeB has a very high magnetic energy product and coercive force, at the same time, the advantages of high energy density make NdFeB permanent magnet materials in modern industry and electronic technology has been widely used, so as to make the miniaturization, lightweight, thin equipment such as instrumentation, electro-acoustic motors, magnetic separation and magnetization possible. The advantage of NdFeB is cost-effective, with good mechanical properties; shortcomings lie in the Curie temperature point is low, poor temperature characteristics, and easy to powder corrosion, must be adjusted by its chemical composition and take the surface treatment method to make it improved, in order to meet the requirements of the actual application
Sintered NdFeB permanent magnetic material has excellent magnetic properties, widely used in electronics, electric machinery, medical equipment, Toys, packaging, hardware machinery, aerospace and aviation and other fields, the more common are permanent magnet motors, speakers, magnetic separators, computer disk drives, magnetic **** vibration imaging equipment instruments and so on.
Properties: NdFeB permanent magnet material is based on the intermetallic compound ND2Fe14B permanent magnetic material. Has a very high magnetic energy product and coercive force, at the same time, the advantages of high energy density makes the permanent magnet material in modern industry and electronic technology has gained wide application, so as to make instrumentation, electro-acoustic motors, magnetic selection magnetization and other equipment miniaturization, lightweight, thin possible.
Characteristics of the material: the advantages of cost-effective, with good mechanical properties; shortcomings lie in the Curie temperature point is low, the temperature characteristics of the poor, and easy to powder corrosion, it must be adjusted through the chemical composition and take the surface treatment method to make improvements to meet the requirements of the actual application.
Manufacturing process: the manufacture of powder metallurgy process.
Process: Ingredients → melting ingot → powder → pressing → sintering and tempering → magnetic detection → grinding processing → pin cutting processing → plating → finished products