Judging from the performance of the magnets found so far, the performance of NdFeB magnets is quite good, and this type of product has extremely high magnetism, guarantees the maximum magnetic energy product, and is very stable. It is widely used in some chemical industries. . And I believe many friends have also learned that from the current production technology and technological level, it may not be possible to find a product that can replace NdFeB magnets in the next ten years, so its practicality is also very strong. The neodymium iron boron powerful magnet is a device that converts the changes in the magnetic function of the active element caused by the magnetic field, current, stress and strain, temperature, light, etc. into electrical signals. In this way, the corresponding physical quantity is viewed. It is characterized by non-contact measurement, the viewing signal is almost unaffected by the object being measured, it is resistant to pollution and noise, it can work reliably even under very harsh environmental conditions, it is durable and has a long life. Because of this, such sensors are used in various sectors from national defense, aerospace, to the national economy, from medical and health care to everyday life.

NdFeB magnets are usually assembled in machines and equipment for use. Modern whole machines are rapidly developing in the direction of compactness, simplicity, multi-function, and intelligence. It is requested that the sensors used can respond to changes in physical quantities in small spaces with high flexibility and speed. That is, as the sensor itself needs to be small and lightweight, it is also eager to advance its working speed, viewing resolution and flexibility.

Semiconductor large-scale plan integrated circuit manufacturing technology, micro-electromechanical system (MEMS) manufacturing technology, promotion and application of micro-assembly technology, magnetic thin film, amorphous, multilayer film, nano-magnetic wire and other new materials, flat coil micro-magnetic device manufacturing technology and The continuous advancement of characterization methods has laid a reliable foundation for the miniaturization and miniaturization of NdFeB strong magnets. Many new high-performance, miniaturized and miniaturized NdFeB strong magnets using various new effects are continuously being put into the market . The AMR thin-film active elements and sensors listed in the early stage, and the practical thin-film fluxgate magnetometers and wireless magneto-elastic micro-sensor arrays are the typical representatives. Below, briefly introduce the working principle, basic structure and primary technical functions of several miniature neodymium iron boron powerful magnets.

The development and application of new neodymium iron boron powerful magnets have created immense economic, technical and social benefits. With the completion of industrial automation, intensification of processing, office automation and family life modernization, the industrialized society will be transformed into an informationized society. Footsteps. They will play an increasingly important role in the transformation of traditional industries, resource exploration and comprehensive utilization, environmental protection, biological engineering, and intelligent transportation control.