Bonded NdFeB, composed of Nd2Fe14B, is a synthetic magnet. Bonded NdFeB magnets are magnets made by mixing quick-quenched NdFeB magnetic powder and binder through "compression molding" or "injection molding". Bonded magnets have high dimensional accuracy, can be made into magnetic components with relatively complex shapes, and have the characteristics of one-time molding and multi-pole orientation. Bonded NdFeB has high mechanical strength and can be molded together with other supporting components during molding.
The production and application development of bonded NdFeB permanent magnet materials is late, the application area is not wide, and the dosage is small. It is mainly used in office automation equipment, electrical equipment, audio-visual equipment, instruments and meters, small motors and measuring machinery, in mobile phones , CD-ROM, DVD-ROM drive motors, hard disk spindle motors HDD, other micro DC motors and automation instruments and other fields are widely used. In recent years, the application proportion of bonded NdFeB permanent magnet materials in my country is: 62% for computers, 7% for electronics industry, 8% for office automation equipment, 7% for automobiles, 7% for appliances, and 9% for others.