CN102930974A - Humidity adjustment-based manufacturing method for sintered Nd-Fe-B magnets - Google Patents
Humidity adjustment-based manufacturing method for sintered Nd-Fe-B magnets Download PDFInfo
- Publication number
- CN102930974A CN102930974A CN2012103878201A CN201210387820A CN102930974A CN 102930974 A CN102930974 A CN 102930974A CN 2012103878201 A CN2012103878201 A CN 2012103878201A CN 201210387820 A CN201210387820 A CN 201210387820A CN 102930974 A CN102930974 A CN 102930974A
- Authority
- CN
- China
- Prior art keywords
- sintered
- inert gas
- magnet
- oxygen content
- humidity
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 13
- 239000011261 inert gas Substances 0.000 claims abstract description 35
- 230000005291 magnetic effect Effects 0.000 claims abstract description 34
- 239000001301 oxygen Substances 0.000 claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000033228 biological regulation Effects 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000010298 pulverizing process Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Nd | Fe | B | Co |
31 | 67 | 1 | 1 |
Claims (5)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210387820.1A CN102930974B (en) | 2012-10-11 | 2012-10-11 | Humidity adjustment-based manufacturing method for sintered Nd-Fe-B magnets |
PCT/CN2013/085035 WO2014056447A1 (en) | 2012-10-11 | 2013-10-11 | Process for manufacturing formed body of rare earth alloy magnetic powder and process for manufacturing rare earth magnet |
US14/435,017 US10062503B2 (en) | 2012-10-11 | 2013-10-11 | Manufacturing method of green compacts of rare earth alloy magnetic powder and a manufacturing method of rare earth magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210387820.1A CN102930974B (en) | 2012-10-11 | 2012-10-11 | Humidity adjustment-based manufacturing method for sintered Nd-Fe-B magnets |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102930974A true CN102930974A (en) | 2013-02-13 |
CN102930974B CN102930974B (en) | 2015-06-24 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210387820.1A Active CN102930974B (en) | 2012-10-11 | 2012-10-11 | Humidity adjustment-based manufacturing method for sintered Nd-Fe-B magnets |
Country Status (1)
Country | Link |
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CN (1) | CN102930974B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103600070A (en) * | 2013-10-24 | 2014-02-26 | 厦门钨业股份有限公司 | Production method for rare earth alloy magnetic powder forming body and rare-earth magnet |
WO2014056447A1 (en) * | 2012-10-11 | 2014-04-17 | 厦门钨业股份有限公司 | Process for manufacturing formed body of rare earth alloy magnetic powder and process for manufacturing rare earth magnet |
CN103990794A (en) * | 2014-06-10 | 2014-08-20 | 江苏巨鑫磁业有限公司 | Method for oxidizing residual crystalline solids of bonded neodymium iron boron rapid-quenching permanent magnetic powder |
CN106356173A (en) * | 2015-07-14 | 2017-01-25 | 株式会社东芝 | Permanent magnet |
CN106783127A (en) * | 2016-12-16 | 2017-05-31 | 廊坊京磁精密材料有限公司 | NbFeB sintered method based on weather |
CN112164571A (en) * | 2020-08-17 | 2021-01-01 | 包头韵升强磁材料有限公司 | Preparation method of sintered rare earth permanent magnet material |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4898625A (en) * | 1986-09-16 | 1990-02-06 | Tokin Corporation | Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder |
JPH1022154A (en) * | 1996-06-28 | 1998-01-23 | Shin Etsu Chem Co Ltd | Manufacture of rear-earth permanent magnet |
US6261515B1 (en) * | 1999-03-01 | 2001-07-17 | Guangzhi Ren | Method for producing rare earth magnet having high magnetic properties |
CN1944018A (en) * | 2006-09-01 | 2007-04-11 | 浙江大学 | Method for preparing strong magnetic-weak magnetic gradient material formed by slip casting in pulse magnetic field |
CN202366774U (en) * | 2011-12-15 | 2012-08-08 | 天津三环乐喜新材料有限公司 | Air source control device |
-
2012
- 2012-10-11 CN CN201210387820.1A patent/CN102930974B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4898625A (en) * | 1986-09-16 | 1990-02-06 | Tokin Corporation | Method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder |
JPH1022154A (en) * | 1996-06-28 | 1998-01-23 | Shin Etsu Chem Co Ltd | Manufacture of rear-earth permanent magnet |
US6261515B1 (en) * | 1999-03-01 | 2001-07-17 | Guangzhi Ren | Method for producing rare earth magnet having high magnetic properties |
CN1944018A (en) * | 2006-09-01 | 2007-04-11 | 浙江大学 | Method for preparing strong magnetic-weak magnetic gradient material formed by slip casting in pulse magnetic field |
CN202366774U (en) * | 2011-12-15 | 2012-08-08 | 天津三环乐喜新材料有限公司 | Air source control device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014056447A1 (en) * | 2012-10-11 | 2014-04-17 | 厦门钨业股份有限公司 | Process for manufacturing formed body of rare earth alloy magnetic powder and process for manufacturing rare earth magnet |
US10062503B2 (en) | 2012-10-11 | 2018-08-28 | Xiamen Tungsten Co., Ltd. | Manufacturing method of green compacts of rare earth alloy magnetic powder and a manufacturing method of rare earth magnet |
CN103600070A (en) * | 2013-10-24 | 2014-02-26 | 厦门钨业股份有限公司 | Production method for rare earth alloy magnetic powder forming body and rare-earth magnet |
CN103990794A (en) * | 2014-06-10 | 2014-08-20 | 江苏巨鑫磁业有限公司 | Method for oxidizing residual crystalline solids of bonded neodymium iron boron rapid-quenching permanent magnetic powder |
CN106356173A (en) * | 2015-07-14 | 2017-01-25 | 株式会社东芝 | Permanent magnet |
CN106783127A (en) * | 2016-12-16 | 2017-05-31 | 廊坊京磁精密材料有限公司 | NbFeB sintered method based on weather |
CN112164571A (en) * | 2020-08-17 | 2021-01-01 | 包头韵升强磁材料有限公司 | Preparation method of sintered rare earth permanent magnet material |
CN112164571B (en) * | 2020-08-17 | 2022-02-11 | 包头韵升强磁材料有限公司 | Preparation method of sintered rare earth permanent magnet material |
Also Published As
Publication number | Publication date |
---|---|
CN102930974B (en) | 2015-06-24 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20190329 Address after: No. 1005 Anling Road, Huli District, Xiamen City, Fujian Province, 361000 Co-patentee after: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. Patentee after: XIAMEN TUNGSTEN Co.,Ltd. Address before: No. 1005 Anling Road, Huli District, Xiamen City, Fujian Province, 361000 Patentee before: XIAMEN TUNGSTEN Co.,Ltd. |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20220610 Address after: 366300 No. 31, Tingzhou Avenue South Road, Changting County, Longyan City, Fujian Province Patentee after: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. Address before: No. 1005 Anling Road, Huli District, Xiamen City, Fujian Province, 361000 Patentee before: XIAMEN TUNGSTEN Co.,Ltd. Patentee before: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. |
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TR01 | Transfer of patent right | ||
CP03 | Change of name, title or address |
Address after: 366300 new industrial zone, Changting Economic Development Zone, Longyan City, Fujian Province Patentee after: Fujian Jinlong Rare Earth Co.,Ltd. Address before: 366300 No. 31, Tingzhou Avenue South Road, Changting County, Longyan City, Fujian Province Patentee before: FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH Co.,Ltd. |
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CP03 | Change of name, title or address |