Method for storing neodymium iron boron magnetic powder
A storage method, NdFeB technology, applied in the direction of packaging objects, packaging, internal accessories, etc. under special gas conditions, can solve the problems of harmful substances polluting the air, incomplete, unable to recycle and deoxidize, and achieve no air pollution, Implement simple effects
Active Publication Date: 2019-08-16
东阳市中振永磁有限公司
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] As the third-generation rare earth permanent magnet material, NdFeB magnets have a high performance-price ratio. NdFeB magnets are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries. NdFeB magnets are made of NdFeB It is made of boron magnet powder. After the powder is made, it needs to be deoxidized and sealed when it is not in use. The traditional storage method of NdFeB magnetic powder requires a large amount of nitrogen to remove oxygen, but after the nitrogen is discharged, it cannot be recovered and the deoxygenation is not complete. Moreover, when nitrogen is discharged, a large amount of harmful substances will be brought out to pollute the air.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] In order to achieve the above object, the present invention adopts the following technical solutions: a method for storing NdFeB magnetic powder, comprising the following steps:
[0030] a. Raw material preparation and pretreatment: Weighing, crushing, cutting and derusting the magnets by using steel bar cutting machine and drum polishing machine;
[0031] b. Melting: Use a vacuum melting furnace to melt the pretreated magnets to make NdFeB alloys;
[0032] c. Hydrogen explosion: use a vacuum hydrogen treatment furnace to carry out hydrogen explosion on the smelted NdFeB alloy;
[0033] d. Powder making: use a magnet crusher to crush the NdFeB alloy fragments after hydrogen explosion into powder;
[0034] e. Storage: use magnetic powder storage equipment to store magnet powder;
[0035] The pulverizing operation is to put the NdFeB alloy fragments after hydrogen explosion on a magnet crusher, and use the magnetic powder crusher to crush the NdFeB alloy fragments into ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for storing neodymium iron boron magnetic powder. The storage method comprises the steps of raw material preparation and pretreatment: weighing, crushing, cutting andderusting a magnet by using a steel bar cutting machine and a roller polishing machine; smelting, and specifically smelting the pretreated magnet by using a vacuum smelting furnace to manufacture neodymium iron boron alloy; hydrogen explosion, and specifically carrying out hydrogen explosion on the smelted neodymium iron boron alloy by using a vacuum hydrogen treatment furnace; pulverizing, and specifically using a magnet crusher to crush the neodymium iron boron alloy fragments subjected to hydrogen explosion into powder; and storage, and specifically using magnetic powder storage equipment to store the magnet powder. The method is simple to implement, can completely remove oxygen in equipment and does not pollute air.
Description
technical field [0001] The invention belongs to the field of NdFeB magnetic powder storage, and in particular relates to a storage method for NdFeB magnetic powder. Background technique [0002] As the third-generation rare earth permanent magnet material, NdFeB magnets have a high performance-price ratio. NdFeB magnets are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries. NdFeB magnets are made of NdFeB It is made of boron magnet powder. After the powder is made, it needs to be deoxidized and sealed when it is not in use. The traditional storage method of NdFeB magnetic powder requires a large amount of nitrogen to remove oxygen, but after the nitrogen is discharged, it cannot be recovered and the deoxygenation is not complete. Moreover, when nitrogen is discharged, a large amount of harmful substances will be brought out to pollute the air. Contents of the invention [0003] In order to overcome the deficiencies of the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B65D25/02B65D81/20B22F9/02B22F9/04
CPCB22F9/023B22F9/04B65D25/02B65D81/2076
Inventor 鲍金胜潘健
Owner 东阳市中振永磁有限公司