Hydrogen crushing method for neodymium-iron-boron magnet

The invention provides a hydrogen crushing method for a neodymium-iron-boron magnet. The hydrogen crushing method comprises the step of performing hydrogen crushing of a neodymium-iron-boron semi-finished product under the condition of protective gas and hydrogen so as to obtain neodymium-iron-boron...

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Bibliographic Details
Main Author PANG ZAISHENG
Format Patent
LanguageChinese
English
Published 16.03.2016
Subjects
BASIC ELECTRIC ELEMENTS
CASTING
ELECTRICITY
INDUCTANCES
MAGNETS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
WORKING METALLIC POWDER
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Summary:The invention provides a hydrogen crushing method for a neodymium-iron-boron magnet. The hydrogen crushing method comprises the step of performing hydrogen crushing of a neodymium-iron-boron semi-finished product under the condition of protective gas and hydrogen so as to obtain neodymium-iron-boron raw fine powder. According to the invention, when hydrogen crushing is carried out, high-purity protective gas and hydrogen are introduced into a system; with the help of pressure of the protective gas, small-molecular hydrogen is uniformly dispersed in a furnace chamber; hydrogen is ensured to be distributed at various positions in the furnace chamber; therefore, the neodymium-iron-boron semi-finished product at the various positions in equipment can be sufficiently reacted with hydrogen, such that the neodymium-iron-boron semi-finished product can be sufficiently crushed; the content of remained hydrogen in neodymium-iron-boron hydrogen crushed coarse powder can be reduced to the most extent; therefore, the hydr
Bibliography:Application Number: CN201510959152