CN105551711A - Neodymium iron boron magnet ring magnetizing technology and device - Google Patents
Neodymium iron boron magnet ring magnetizing technology and device Download PDFInfo
- Publication number
- CN105551711A CN105551711A CN201610131529.6A CN201610131529A CN105551711A CN 105551711 A CN105551711 A CN 105551711A CN 201610131529 A CN201610131529 A CN 201610131529A CN 105551711 A CN105551711 A CN 105551711A
- Authority
- CN
- China
- Prior art keywords
- former
- formpiston
- coil
- magnetic
- ring
- 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.)
- Granted
Links
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 61
- 238000005516 engineering process Methods 0.000 title abstract description 6
- 239000006247 magnetic powder Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000000696 magnetic material Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 19
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 5
- 230000002045 lasting effect Effects 0.000 claims description 5
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus 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
- H01F41/02—Apparatus 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
- H01F41/0253—Apparatus 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
- H01F41/0266—Moulding; Pressing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the field of magnetic materials, and particularly discloses a neodymium iron boron magnet ring magnetizing technology and device. The technology comprises the steps of S1, separating a male die from a female die, and adding anisotropic neodymium iron boron magnetic powder into the female die; S2, moving the male die to the female die; S3, adjusting the female die and a direct-current coil; S4, continuing to move the male die; S5, switching on the direct-current coil again, and switching on an electromagnet ring at the same time; S6, conducting double-action pressing, and conducting vacuumizing at the same time; S7, conducting pressure relief when the pressure between the male die and the female die is larger than or equal to 15 MPa; S8, demagnetizing all electromagnets after magnetization lasts for 3-5 min; S9, separating the male die from the female die, and conducting pressure maintenance for 3-6 h; S10, taking the electromagnet ring out and conducting sintering, so that a finished product is obtained. By the adoption of the neodymium iron boron magnet ring magnetizing technology and device, the coercivity of the neodymium iron boron magnet ring is improved, the newness rate of the neodymium iron boron magnet ring is increased, material waste is reduced, and production cost is reduced.
Description
Technical field
The invention belongs to magnetic Material Field, specifically relate to a kind of magnetize technique and device of magnetic Nd-Fe-B ring.
Background technology
NdFeB material is of paramount importance one in Material Field, magnetic Nd-Fe-B ring wherein manufactures closely bound up with daily life and industry especially, but existing magnetic Nd-Fe-B ring is in the process manufactured, and the usual coercive force of produced magnetic Nd-Fe-B ring is low, ratio of briquetting is low, easy existing defects.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of magnetize technique and device of magnetic Nd-Fe-B ring.
For achieving the above object, the technical solution used in the present invention is:
A kind of technique that magnetizes of magnetic Nd-Fe-B ring:
S1. formpiston and former are separated, in former, add anisotropy NdFeB magnetic powder;
S2. formpiston is moved to former;
S3. adjust former and DC coil, make NdFeB magnetic powder be positioned at DC coil central authorities;
S4. continue mobile formpiston, stop formpiston moving after formpiston is contacted with NdFeB magnetic powder, open the DC coil in formpiston and former, as magnetic field intensity >=0.5T, oppositely demagnetize, continue 5 ~ 10s, formpiston and former are separated release;
S5. reopen DC coil, open ring-type electromagnet simultaneously;
S6. when pin dress flux sleeve in magnetic field intensity reach >=2.5T time, formpiston and former move simultaneously, carry out two-way compacting, vacuumize simultaneously;
S7. between formpiston and former during pressure >=15MPa, open DC coil and pulsed coil, the frequency of described pulsed coil is after 10 ~ 15 times/second when formpiston and former between, pressure reaches 30MPa, keeps pressure to suppress release after 5 ~ 10s;
S8. magnetize after lasting 3 ~ 5min, when the table field wave in the outer circumference direction of NdFeB magnetic powder dynamic lower than 5% time, whole electromagnet is demagnetized;
S9. formpiston is separated with former, under vacuum conditions, utilizes former to eject magnet ring shaping for NdFeB magnetic powder, put into static pressure machine, pressurize 3 ~ 6h;
S10. take out magnet ring and carry out sintering and can obtain finished product.
Further, the D.C. magnetic field parameter that described DC coil produces is 10000 ~ 40000NI.
Further, the D.C. magnetic field parameter that described pulsed coil produces is 20000 ~ 60000NI.
Further, the described dwell time is preferably 4h.
Further, described magnet is NdFeB series permanent magnet materials, or samarium-cobalt permanent-magnetic material, or binding electromagnetic material, or dry method opposite sex Ferrite Material.
A kind of magnetizer of magnetic Nd-Fe-B ring:
Comprise formpiston and the former corresponding with formpiston position, outstanding upper plug is provided with in described formpiston, the lower plug outstanding with described upper plug correspondence is provided with in described former, a pair ring-type DC coil is provided with in described formpiston and former, described DC coil is connected with DC power supply, be arranged with pulsed coil outside described former, described pulsed coil is connected with the pulse power, and described pulsed coil is arranged on the bottom of former.
Beneficial effect of the present invention: magnetize technique and the device of magnetic Nd-Fe-B ring of the present invention, utilize the preorientation to magnetic, stabilize the magnetic force direction of NdFeB magnetic powder, simultaneously when compacting magnetic Nd-Fe-B ring, carry out pressurize, ensure that NdFeB magnetic powder compressing after the stability of magnetic, improve the coercive force of magnetic Nd-Fe-B ring, meanwhile, the newness rate of magnetic Nd-Fe-B ring is improved, reduce the waste of material, decrease production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment 4.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1:
A kind of technique that magnetizes of magnetic Nd-Fe-B ring:
S1. formpiston and former are separated, in former, add anisotropy NdFeB magnetic powder;
S2. formpiston is moved to former;
S3. adjust former and DC coil, make NdFeB magnetic powder be positioned at DC coil central authorities;
S4. continue mobile formpiston, stop formpiston moving after formpiston is contacted with NdFeB magnetic powder, open the DC coil in formpiston and former, as magnetic field intensity >=0.5T, oppositely demagnetize, continue 5s, formpiston and former are separated release;
S5. reopen DC coil, open ring-type electromagnet simultaneously;
S6. when pin dress flux sleeve in magnetic field intensity reach >=2.5T time, formpiston and former move simultaneously, carry out two-way compacting, vacuumize simultaneously;
S7. between formpiston and former during pressure >=15MPa, open DC coil and pulsed coil, the frequency of described pulsed coil is after 10 times/second when formpiston and former between, pressure reaches 30MPa, keeps pressure to suppress release after 5s;
S8. magnetize after lasting 3min, when the table field wave in the outer circumference direction of NdFeB magnetic powder dynamic lower than 5% time, whole electromagnet is demagnetized;
S9. formpiston is separated with former, under vacuum conditions, utilizes former to eject magnet ring shaping for NdFeB magnetic powder, put into static pressure machine, pressurize 3h;
S10. take out magnet ring and carry out sintering and can obtain finished product.
Further, the D.C. magnetic field parameter that described DC coil produces is 10000NI.
Further, the D.C. magnetic field parameter that described pulsed coil produces is 20000NI.
Further, described magnet is NdFeB series permanent magnet materials, or samarium-cobalt permanent-magnetic material, or binding electromagnetic material, or dry method opposite sex Ferrite Material.
Embodiment 2:
A kind of technique that magnetizes of magnetic Nd-Fe-B ring:
S1. formpiston and former are separated, in former, add anisotropy NdFeB magnetic powder;
S2. formpiston is moved to former;
S3. adjust former and DC coil, make NdFeB magnetic powder be positioned at DC coil central authorities;
S4. continue mobile formpiston, stop formpiston moving after formpiston is contacted with NdFeB magnetic powder, open the DC coil in formpiston and former, as magnetic field intensity >=0.5T, oppositely demagnetize, continue 5 ~ 10s, formpiston and former are separated release;
S5. reopen DC coil, open ring-type electromagnet simultaneously;
S6. when pin dress flux sleeve in magnetic field intensity reach >=2.5T time, formpiston and former move simultaneously, carry out two-way compacting, vacuumize simultaneously;
S7. between formpiston and former during pressure >=15MPa, open DC coil and pulsed coil, the frequency of described pulsed coil is after 12 times/second when formpiston and former between, pressure reaches 30MPa, keeps pressure to suppress release after 7s;
S8. magnetize after lasting 4min, when the table field wave in the outer circumference direction of NdFeB magnetic powder dynamic lower than 5% time, whole electromagnet is demagnetized;
S9. formpiston is separated with former, under vacuum conditions, utilizes former to eject magnet ring shaping for NdFeB magnetic powder, put into static pressure machine, pressurize 4h;
S10. take out magnet ring and carry out sintering and can obtain finished product.
Further, the D.C. magnetic field parameter that described DC coil produces is 20000NI.
Further, the D.C. magnetic field parameter that described pulsed coil produces is 40000NI.
Further, described magnet is NdFeB series permanent magnet materials, or samarium-cobalt permanent-magnetic material, or binding electromagnetic material, or dry method opposite sex Ferrite Material.
Embodiment 3:
A kind of technique that magnetizes of magnetic Nd-Fe-B ring:
S1. formpiston and former are separated, in former, add anisotropy NdFeB magnetic powder;
S2. formpiston is moved to former;
S3. adjust former and DC coil, make NdFeB magnetic powder be positioned at DC coil central authorities;
S4. continue mobile formpiston, stop formpiston moving after formpiston is contacted with NdFeB magnetic powder, open the DC coil in formpiston and former, as magnetic field intensity >=0.5T, oppositely demagnetize, continue 5 ~ 10s, formpiston and former are separated release;
S5. reopen DC coil, open ring-type electromagnet simultaneously;
S6. when pin dress flux sleeve in magnetic field intensity reach >=2.5T time, formpiston and former move simultaneously, carry out two-way compacting, vacuumize simultaneously;
S7. between formpiston and former during pressure >=15MPa, open DC coil and pulsed coil, the frequency of described pulsed coil is after 15 times/second when formpiston and former between, pressure reaches 30MPa, keeps pressure to suppress release after 10s;
S8. magnetize after lasting 5min, when the table field wave in the outer circumference direction of NdFeB magnetic powder dynamic lower than 5% time, whole electromagnet is demagnetized;
S9. formpiston is separated with former, under vacuum conditions, utilizes former to eject magnet ring shaping for NdFeB magnetic powder, put into static pressure machine, pressurize 6h;
S10. take out magnet ring and carry out sintering and can obtain finished product.
Further, the D.C. magnetic field parameter that described DC coil produces is 40000NI.
Further, the D.C. magnetic field parameter that described pulsed coil produces is 60000NI.
Further, described magnet is NdFeB series permanent magnet materials, or samarium-cobalt permanent-magnetic material, or binding electromagnetic material, or dry method opposite sex Ferrite Material.
Embodiment 4
A kind of magnetizer of magnetic Nd-Fe-B ring:
Comprise formpiston 1 and the former 2 corresponding with formpiston 1 position, outstanding upper plug is provided with in described formpiston 1, the lower plug outstanding with described upper plug correspondence is provided with in described former 2, a pair ring-type DC coil 4 is provided with in described formpiston 1 and former 2, described DC coil 4 is connected with DC power supply, be arranged with pulsed coil 6 outside described former 2, described pulsed coil 6 is connected with the pulse power, and described pulsed coil 6 is arranged on the bottom of former 2.
Detect the quality of the magnet ring made by embodiment 1-3, find that the magnet ring quality made by embodiment 2 is high, embodiment 1-3 Performance Detection is as following table
Claims (6)
1. the technique that magnetizes of magnetic Nd-Fe-B ring, is characterized in that:
S1. formpiston and former are separated, in former, add anisotropy NdFeB magnetic powder;
S2. formpiston is moved to former;
S3. adjust former and DC coil, make NdFeB magnetic powder be positioned at DC coil central authorities;
S4. continue mobile formpiston, stop formpiston moving after formpiston is contacted with NdFeB magnetic powder, open the DC coil in formpiston and former, as magnetic field intensity >=0.5T, oppositely demagnetize, continue 5 ~ 10s, formpiston and former are separated release;
S5. reopen DC coil, open ring-type electromagnet simultaneously;
S6. when pin dress flux sleeve in magnetic field intensity reach >=2.5T time, formpiston and former move simultaneously, carry out two-way compacting, vacuumize simultaneously;
S7. between formpiston and former during pressure >=15MPa, open DC coil and pulsed coil, the frequency of described pulsed coil is after 10 ~ 15 times/second when formpiston and former between, pressure reaches 30MPa, keeps pressure to suppress release after 5 ~ 10s;
S8. magnetize after lasting 3 ~ 5min, when the table field wave in the outer circumference direction of NdFeB magnetic powder dynamic lower than 5% time, whole electromagnet is demagnetized;
S9. formpiston is separated with former, under vacuum conditions, utilizes former to eject magnet ring shaping for NdFeB magnetic powder, put into static pressure machine, pressurize 3 ~ 6h;
S10. take out magnet ring and carry out sintering and can obtain finished product.
2. the technique that magnetizes of magnetic Nd-Fe-B ring according to claim 1, is characterized in that: the D.C. magnetic field parameter that described DC coil produces is 10000 ~ 40000NI.
3. the technique that magnetizes of magnetic Nd-Fe-B ring according to claim 1, is characterized in that: the D.C. magnetic field parameter that described pulsed coil produces is 20000 ~ 60000NI.
4. the technique that magnetizes of magnetic Nd-Fe-B ring according to claim 1, is characterized in that: the described dwell time is preferably 4h.
5. the technique that magnetizes of magnetic Nd-Fe-B ring according to claim 1, is characterized in that: described magnet is NdFeB series permanent magnet materials, or samarium-cobalt permanent-magnetic material, or binding electromagnetic material, or dry method opposite sex Ferrite Material.
6. a magnetizer for magnetic Nd-Fe-B ring, is characterized in that:
Comprise formpiston and the former corresponding with formpiston position, outstanding upper plug is provided with in described formpiston, the lower plug outstanding with described upper plug correspondence is provided with in described former, a pair ring-type DC coil is provided with in described formpiston and former, described DC coil is connected with DC power supply, be arranged with pulsed coil outside described former, described pulsed coil is connected with the pulse power, and described pulsed coil is arranged on the bottom of former.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610131529.6A CN105551711B (en) | 2016-03-08 | 2016-03-08 | Magnetize technique and the device of a kind of magnetic Nd-Fe-B ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610131529.6A CN105551711B (en) | 2016-03-08 | 2016-03-08 | Magnetize technique and the device of a kind of magnetic Nd-Fe-B ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105551711A true CN105551711A (en) | 2016-05-04 |
| CN105551711B CN105551711B (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610131529.6A Expired - Fee Related CN105551711B (en) | 2016-03-08 | 2016-03-08 | Magnetize technique and the device of a kind of magnetic Nd-Fe-B ring |
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| CN (1) | CN105551711B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087917A (en) * | 2009-12-02 | 2011-06-08 | 北京中科三环高技术股份有限公司 | Preparation method and pressing device for radiation-oriented magnet ring or multipolar magnet ring |
| JP2011216678A (en) * | 2010-03-31 | 2011-10-27 | Nitto Denko Corp | R-t-b based rare-earth permanent magnet |
| CN103128286A (en) * | 2013-03-13 | 2013-06-05 | 黄可可 | Anisotropism sintering rare earth permanent magnetic material radial orientation device and orientation method thereof |
| CN103042211B (en) * | 2012-07-27 | 2015-02-11 | 王秋安 | Die for radially-oriented sintered NdFeB magnetic ring and production process thereof |
| CN104867671A (en) * | 2015-06-10 | 2015-08-26 | 江苏晨朗电子集团有限公司 | Production method of NdFeB (Neodymium Iron Boron) radiation ring |
-
2016
- 2016-03-08 CN CN201610131529.6A patent/CN105551711B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087917A (en) * | 2009-12-02 | 2011-06-08 | 北京中科三环高技术股份有限公司 | Preparation method and pressing device for radiation-oriented magnet ring or multipolar magnet ring |
| JP2011216678A (en) * | 2010-03-31 | 2011-10-27 | Nitto Denko Corp | R-t-b based rare-earth permanent magnet |
| CN103042211B (en) * | 2012-07-27 | 2015-02-11 | 王秋安 | Die for radially-oriented sintered NdFeB magnetic ring and production process thereof |
| CN103128286A (en) * | 2013-03-13 | 2013-06-05 | 黄可可 | Anisotropism sintering rare earth permanent magnetic material radial orientation device and orientation method thereof |
| CN104867671A (en) * | 2015-06-10 | 2015-08-26 | 江苏晨朗电子集团有限公司 | Production method of NdFeB (Neodymium Iron Boron) radiation ring |
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| Publication number | Publication date |
|---|---|
| CN105551711B (en) | 2017-11-10 |
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Granted publication date: 20171110 |