JPS572801A - Production of sintered permanent magnet - Google Patents
Production of sintered permanent magnetInfo
- Publication number
- JPS572801A JPS572801A JP7497980A JP7497980A JPS572801A JP S572801 A JPS572801 A JP S572801A JP 7497980 A JP7497980 A JP 7497980A JP 7497980 A JP7497980 A JP 7497980A JP S572801 A JPS572801 A JP S572801A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- magnetic field
- curved surface
- sintering
- sintered
- 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
Landscapes
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
PURPOSE: To make mass production of titled magnets of a curved surface shape free from any disturbance in magnetic field orientation characteristic by setting a flat-platelike molding formed by magnetic field pressing of raw material powder on sintering jigs of prescribed curvature and sintering the same under the conditions under which a prescribed amount of a liquid phase is produced.
CONSTITUTION: Known raw material powder having the composition producing a ≥0.1wt% liquid phase during sintering is molded to a flat-platelike molding 14 of which the magnetic field is oriented in the thickness direction by using a magnetic field press. Next, this molding 14 is placed on the curved surface of a sintering jig (mold) 15 having prescribed curvature, and is so set that the orientation of the magnetic field of the molding 14 is approximately perpendicular to the curved surface of the mold 15. It is heated and sintered in that state or a mating mold 15 having the curved surface conforming to the desired curvature is placed on the molding 14 or other weight addition is carried out and the molding is sintered by heating. If the molding is deformed to the desired shape during sintering in this way, the crystal anisotropies owing to magnetic field orientation align to the direction normal to the curved surface and the sintered body of good orientation characteristic is obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7497980A JPS572801A (en) | 1980-06-05 | 1980-06-05 | Production of sintered permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7497980A JPS572801A (en) | 1980-06-05 | 1980-06-05 | Production of sintered permanent magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS572801A true JPS572801A (en) | 1982-01-08 |
| JPS6136047B2 JPS6136047B2 (en) | 1986-08-16 |
Family
ID=13562910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7497980A Granted JPS572801A (en) | 1980-06-05 | 1980-06-05 | Production of sintered permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS572801A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043402A (en) * | 1983-08-15 | 1985-03-08 | Nippon Funmatsu Gokin Kk | Production of sintered body having curved part |
| JP2007027245A (en) * | 2005-07-13 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Anisotropic bond sheet magnet and its manufacturing apparatus |
| WO2016152978A1 (en) * | 2015-03-24 | 2016-09-29 | 日東電工株式会社 | Method for producing sintered body that forms rare-earth permanent magnet and has non-parallel easy magnetization axis orientation |
| WO2016152979A1 (en) * | 2015-03-24 | 2016-09-29 | 日東電工株式会社 | Sintered body for forming rare-earth magnet, and rare-earth sintered magnet |
| JPWO2017022684A1 (en) * | 2015-07-31 | 2018-05-24 | 日東電工株式会社 | Sintered body for rare earth magnet formation and rare earth sintered magnet |
| JP2020140998A (en) * | 2019-02-27 | 2020-09-03 | 株式会社玉川製作所 | Structure of pole piece and mold of electromagnet for molding machine in magnetic field used for manufacturing tile-like anisotropic magnet radially oriented to both ends |
| US10867732B2 (en) | 2015-03-24 | 2020-12-15 | Nitto Denko Corporation | Sintered body for forming rare-earth permanent magnet and rotary electric machine having rare-earth permanent magnet |
| JP2021009908A (en) * | 2019-07-01 | 2021-01-28 | 株式会社玉川製作所 | Magnetizer magnetizing tile-shaped magnet in radial direction |
| US11101707B2 (en) | 2015-03-24 | 2021-08-24 | Nitto Denko Corporation | Rare-earth permanent magnet and rotary machine including rare-earth permanent magnet |
| US11239014B2 (en) | 2015-03-24 | 2022-02-01 | Nitto Denko Corporation | Rare-earth magnet and linear motor using same |
-
1980
- 1980-06-05 JP JP7497980A patent/JPS572801A/en active Granted
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043402A (en) * | 1983-08-15 | 1985-03-08 | Nippon Funmatsu Gokin Kk | Production of sintered body having curved part |
| JP2007027245A (en) * | 2005-07-13 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Anisotropic bond sheet magnet and its manufacturing apparatus |
| JP4508019B2 (en) * | 2005-07-13 | 2010-07-21 | パナソニック株式会社 | Anisotropic bond sheet magnet and manufacturing apparatus thereof |
| JP2018186274A (en) * | 2015-03-24 | 2018-11-22 | 日東電工株式会社 | Sintered body for forming rare-earth magnet, and rare-earth sintered magnet |
| US10867732B2 (en) | 2015-03-24 | 2020-12-15 | Nitto Denko Corporation | Sintered body for forming rare-earth permanent magnet and rotary electric machine having rare-earth permanent magnet |
| JPWO2016152979A1 (en) * | 2015-03-24 | 2017-08-03 | 日東電工株式会社 | Sintered body for rare earth magnet formation and rare earth sintered magnet |
| JPWO2016152978A1 (en) * | 2015-03-24 | 2018-01-25 | 日東電工株式会社 | Method for producing sintered body for forming rare earth permanent magnet having non-parallel easy axis orientation |
| US11239014B2 (en) | 2015-03-24 | 2022-02-01 | Nitto Denko Corporation | Rare-earth magnet and linear motor using same |
| WO2016152978A1 (en) * | 2015-03-24 | 2016-09-29 | 日東電工株式会社 | Method for producing sintered body that forms rare-earth permanent magnet and has non-parallel easy magnetization axis orientation |
| EP3276645A4 (en) * | 2015-03-24 | 2019-01-02 | Nitto Denko Corporation | Method for producing sintered body that forms rare-earth permanent magnet and has non-parallel easy magnetization axis orientation |
| TWI666668B (en) * | 2015-03-24 | 2019-07-21 | 日商日東電工股份有限公司 | Manufacturing method of rare earth permanent magnet forming sintered body with non-parallel easy magnetization axis alignment |
| TWI674594B (en) * | 2015-03-24 | 2019-10-11 | 日商日東電工股份有限公司 | Sintered body for rare earth magnet formation and rare earth sintered magnet |
| US11101707B2 (en) | 2015-03-24 | 2021-08-24 | Nitto Denko Corporation | Rare-earth permanent magnet and rotary machine including rare-earth permanent magnet |
| WO2016152979A1 (en) * | 2015-03-24 | 2016-09-29 | 日東電工株式会社 | Sintered body for forming rare-earth magnet, and rare-earth sintered magnet |
| US10867729B2 (en) | 2015-03-24 | 2020-12-15 | Nitto Denko Corporation | Method for producing sintered body that forms rare-earth permanent magnet and has non-parallel easy magnetization axis orientation |
| JP2021106271A (en) * | 2015-07-31 | 2021-07-26 | 日東電工株式会社 | Sintered body for forming rare-earth magnet and rare-earth sintered magnet |
| JPWO2017022684A1 (en) * | 2015-07-31 | 2018-05-24 | 日東電工株式会社 | Sintered body for rare earth magnet formation and rare earth sintered magnet |
| JP2020140998A (en) * | 2019-02-27 | 2020-09-03 | 株式会社玉川製作所 | Structure of pole piece and mold of electromagnet for molding machine in magnetic field used for manufacturing tile-like anisotropic magnet radially oriented to both ends |
| JP2021009908A (en) * | 2019-07-01 | 2021-01-28 | 株式会社玉川製作所 | Magnetizer magnetizing tile-shaped magnet in radial direction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6136047B2 (en) | 1986-08-16 |
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