NdFeB PERMANENT MAGNETIC MATERIALS VACUUM RAPIDLY QUENCH EQUIPMENT
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    In this paper.combinning the internal and external development of NdFeB permanent magnetic materials, the author introduces the technical and structural characteristics of the NdFeB vacuum rapidly quench device;and describes some advanced technologies, such as the vacuum dynam-ic sealing with magnetic fluid and its applications.
 
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