CN108666124A - A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product - Google Patents

A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product Download PDF

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Publication number
CN108666124A
CN108666124A CN201810401689.7A CN201810401689A CN108666124A CN 108666124 A CN108666124 A CN 108666124A CN 201810401689 A CN201810401689 A CN 201810401689A CN 108666124 A CN108666124 A CN 108666124A
Authority
CN
China
Prior art keywords
material chamber
magnetizing
preliminary filling
chamber
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810401689.7A
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Chinese (zh)
Inventor
羊哲
詹前营
张洪涛
詹松根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DONGGUAN JIADA MAGNET PRODUCT Co Ltd
Original Assignee
DONGGUAN JIADA MAGNET PRODUCT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DONGGUAN JIADA MAGNET PRODUCT Co Ltd filed Critical DONGGUAN JIADA MAGNET PRODUCT Co Ltd
Priority to CN201810401689.7A priority Critical patent/CN108666124A/en
Publication of CN108666124A publication Critical patent/CN108666124A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/003Apparatus, e.g. furnaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02Compacting only
    • B22F3/03Press-moulding apparatus therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00Apparatus or processes for magnetising or demagnetising
    • H01F13/003Methods and devices for magnetising permanent magnets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266Moulding; Pressing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

The present invention provides a kind of preliminary filling magnetic systems producing sintered Nd Fe B rare earth permanent magnet products, the preliminary filling magnetic system includes a pre-magnetizing material chamber, the pan feeding valve that control powder enters is equipped with above pre-magnetizing material chamber, the discharge valve that control powder is gone out is equipped with below pre-magnetizing material chamber, the horizontal side of pre-magnetizing material chamber is equipped with the magnetizing coil that magnetic field can be manufactured to pre-magnetizing material chamber, the preliminary filling magnetic system further includes the briquetting machine for carrying out being orientated compression moulding to powder, and powder is transported to the charging chamber of briquetting machine from pre-magnetizing material chamber.The configuration of the present invention is simple, the process efficiency for being orientated compacting are high.

Description

A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product
Technical field
The present invention relates to a kind of preliminary filling magnetic systems producing sintered Nd-Fe-B rare earth permanent magnet product
Background technology
Sintered Nd-Fe-B rare earth permanent-magnetic material is the strongest permanent-magnet material of magnetic property used now, is widely used in The fields such as computer, Magnetic resonance imaging, small and special electric machine.In invention till now more than 20 years, production technology and performance refer to Mark has obtained quick development.
Its production process is that the Nd-Fe-B alloys after melting are crushed, and it is the thin of 2~5um to wear into average particle size Powder in uniform magnetic field be orientated simultaneously compression moulding, is then carried out at a temperature of 1000~1200 DEG C with vacuum sintering furnace Liquid-phase sintering makes its dense structure, forms alloy product.
Compression moulding is the critical process of sintered Nd-Fe-B rare earth permanent-magnetic material production.During powder pressing, powder Expect that the degree of orientation in magnetic field has been largely fixed the final performance of product.
Invention content
It is an object of the invention in order to solve production sintered Nd-Fe-B rare earth permanent magnet product preliminary filling magnetic system structure Complicated, inefficient problem creatively provides a kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product.
To achieve the goals above, the present invention provides a kind of pre-magnetizings producing sintered Nd-Fe-B rare earth permanent magnet product System, the preliminary filling magnetic system include a pre-magnetizing material chamber, and the pan feeding valve that control powder enters is equipped with above pre-magnetizing material chamber Door, pre-magnetizing material chamber lower section are equipped with the discharge valve that control powder is gone out, and the horizontal side of pre-magnetizing material chamber, which is equipped with, can give preliminary filling Magnetic material chamber manufactures the magnetizing coil in magnetic field, and the preliminary filling magnetic system further includes the press for carrying out being orientated compression moulding to powder Structure, and powder is transported to the charging chamber of briquetting machine from pre-magnetizing material chamber.
To further improvement of the present invention, pipeline connects between the charging chamber and briquetting machine.
It is described that logistics trolley is equipped between charging chamber and briquetting machine to further improvement of the present invention.
To further improvement of the present invention, the pre-magnetizing material chamber is made of ceramic materials.
It can be seen that since the present invention provides a kind of preliminary filling magnetic systems producing sintered Nd-Fe-B rare earth permanent magnet product System, the preliminary filling magnetic system include a pre-magnetizing material chamber, and the pan feeding valve that control powder enters is equipped with above pre-magnetizing material chamber, The discharge valve that control powder is gone out is equipped with below pre-magnetizing material chamber, the horizontal side of pre-magnetizing material chamber, which is equipped with, can give pre-magnetizing Expect that the magnetizing coil in chamber manufacture magnetic field, the preliminary filling magnetic system further include the press for carrying out being orientated compression moulding to powder Structure, and powder is transported to the charging chamber of briquetting machine from pre-magnetizing material chamber.The configuration of the present invention is simple is orientated the work of compacting Sequence ultrahigh in efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the preliminary filling magnetic system of the present invention;
The reference numerals are as follows:
Pre-magnetizing material chamber 1, pan feeding valve 2, discharge valve 3, magnetizing coil 5, briquetting machine 6, charging chamber 7, pipeline 71, Trolley 72
Specific implementation mode
It is attached in conjunction with appended preferred embodiment in order to further appreciate that structure, feature and the other purposes of the present invention With attached drawing, detailed description are as follows, this attached drawing embodiment described is only used to illustrate the technical scheme of the present invention, and does not limit any Form, size or ratio.
As shown in figure, a kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product provided by the invention, The preliminary filling magnetic system includes a pre-magnetizing material chamber 1, and 1 top of pre-magnetizing material chamber is equipped with the pan feeding valve 2 that control powder enters, 1 lower section of pre-magnetizing material chamber is equipped with the discharge valve 3 that control powder is gone out, and the horizontal side of pre-magnetizing material chamber 1, which is equipped with, can give preliminary filling Magnetic material chamber 1 manufactures the magnetizing coil 5 in magnetic field, and the preliminary filling magnetic system further includes the compacting for carrying out being orientated compression moulding to powder Mechanism 6, and powder is transported to the charging chamber 7 of briquetting machine 6 from pre-magnetizing material chamber 1.
Between the charging chamber 7 and briquetting machine 6 between the connection of pipeline 71 or the charging chamber 7 and briquetting machine 6 Equipped with logistics trolley 72.(preferably 1 bottom of pre-magnetizing material chamber) is provided with helium delivery device, helium energy mistake in pre-magnetizing material chamber 1 It prevents powder agglomerating in pre-magnetizing material chamber 1, is conducive to the effect that magnetizes.
Process:Powder is completed after weighing, and is poured into expects pipe, and valve is closed, and opens valve, allows powder into pan feeding chamber It is interior, it is then shut off valve, magnetizing coil is started to work, and is carried out pre-magnetizing operation, is then opened valve, will complete pre-magnetizing Powder pours into charging chamber, and powder, which is transported to briquetting machine, by charging chamber carries out orientation compression moulding.
Utilize product made from this magnetic charging system, related test parameters such as following table:
Experiment shows by means of the invention it is possible to improve the degree of orientation of sintered Nd-Fe-B magnet product, and then in smaller shadow Under the premise of ringing coercivity (Hcj), its remanent magnetism (Br) and maximum magnetic energy product ((BH) max) are improved.
It is to be understood that foregoing invention content and specific implementation mode are intended to prove technical solution provided by the present invention Practical application, should not be construed as limiting the scope of the present invention.Spirit and original of the those skilled in the art in the present invention It, can not various modifications may be made, equivalent replacement or improvement in reason.Protection scope of the present invention is subject to the appended claims.

Claims (4)

1. a kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product, the preliminary filling magnetic system includes a pre-magnetizing Expect chamber, which is characterized in that be equipped with the pan feeding valve that control powder enters above pre-magnetizing material chamber, control is equipped with below pre-magnetizing material chamber The discharge valve that powder processed is gone out, the horizontal side of pre-magnetizing material chamber are equipped with the line that magnetizes that magnetic field can be manufactured to pre-magnetizing material chamber Circle, the preliminary filling magnetic system further include the briquetting machine for carrying out being orientated compression moulding to powder, and by powder from pre-magnetizing material Chamber is transported to the charging chamber of briquetting machine.
2. Nd-Fe-B permanent magnet formula as described in claim 1, which is characterized in that managed between the charging chamber and briquetting machine Road connects.
3. Nd-Fe-B permanent magnet formula as described in claim 1, which is characterized in that the charging chamber and briquetting machine it Between be equipped with logistics trolley.
4. Nd-Fe-B permanent magnet formula as described in claim 1, which is characterized in that the pre-magnetizing material chamber is by ceramic material system At.
CN201810401689.7A 2018-04-28 2018-04-28 A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product Pending CN108666124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810401689.7A CN108666124A (en) 2018-04-28 2018-04-28 A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810401689.7A CN108666124A (en) 2018-04-28 2018-04-28 A kind of preliminary filling magnetic system producing sintered Nd-Fe-B rare earth permanent magnet product

Publications (1)

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CN108666124A true CN108666124A (en) 2018-10-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113241247A (en) * 2021-05-10 2021-08-10 东莞市众旺永磁科技有限公司 Manufacturing process of hollow magnetic product

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201707998U (en) * 2010-05-26 2011-01-12 成都航磁科技有限公司 Pulse magnetic field device for pressing permanent magnetic product
CN103854843A (en) * 2012-12-06 2014-06-11 宁波科宁达工业有限公司 Pre-magnetizing equipment, pressing device and method for producing sintering permanent magnet
CN204720274U (en) * 2015-06-08 2015-10-21 安徽省瀚海新材料有限公司 A kind of device increasing pad between magnet
CN107152844A (en) * 2017-07-04 2017-09-12 江西升华新材料有限公司 Drying machine and material handling system
CN107195905A (en) * 2017-04-27 2017-09-22 武汉艾特米克超能新材料科技有限公司 A kind of preparation method and application of cladded type fire retardant
JP2017183317A (en) * 2016-03-28 2017-10-05 Tdk株式会社 R-t-b-based sintered magnet
CN206577867U (en) * 2016-12-31 2017-10-24 天津龙华诚信粉体技术有限公司 A kind of powder process units
CN206891063U (en) * 2017-07-04 2018-01-16 江西升华新材料有限公司 Drying machine and material handling system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201707998U (en) * 2010-05-26 2011-01-12 成都航磁科技有限公司 Pulse magnetic field device for pressing permanent magnetic product
CN103854843A (en) * 2012-12-06 2014-06-11 宁波科宁达工业有限公司 Pre-magnetizing equipment, pressing device and method for producing sintering permanent magnet
CN204720274U (en) * 2015-06-08 2015-10-21 安徽省瀚海新材料有限公司 A kind of device increasing pad between magnet
JP2017183317A (en) * 2016-03-28 2017-10-05 Tdk株式会社 R-t-b-based sintered magnet
CN206577867U (en) * 2016-12-31 2017-10-24 天津龙华诚信粉体技术有限公司 A kind of powder process units
CN107195905A (en) * 2017-04-27 2017-09-22 武汉艾特米克超能新材料科技有限公司 A kind of preparation method and application of cladded type fire retardant
CN107152844A (en) * 2017-07-04 2017-09-12 江西升华新材料有限公司 Drying machine and material handling system
CN206891063U (en) * 2017-07-04 2018-01-16 江西升华新材料有限公司 Drying machine and material handling system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113241247A (en) * 2021-05-10 2021-08-10 东莞市众旺永磁科技有限公司 Manufacturing process of hollow magnetic product

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Application publication date: 20181016

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