JPS55154504A - Production of anisotropic magnet - Google Patents
Production of anisotropic magnetInfo
- Publication number
- JPS55154504A JPS55154504A JP6237779A JP6237779A JPS55154504A JP S55154504 A JPS55154504 A JP S55154504A JP 6237779 A JP6237779 A JP 6237779A JP 6237779 A JP6237779 A JP 6237779A JP S55154504 A JPS55154504 A JP S55154504A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- barrel
- fine powder
- pressure
- flux density
- 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
Links
Abstract
PURPOSE: To impart superior anisotropy by pressure-molding the mixed fine powder of magnetic fine powder and granulated powder in the direction rectangular to the axis in a rubber press method.
CONSTITUTION: The fine powder mixture of the plate-form particles comprising adding granulated powder of 10W30 mesh at 20W40% to magnetic fine powder of, for example, 1W2μ, is used as powder material. A partition barrel 4 composed of elastic material such as rubber is closely provided in the central part of a pressure vessel 1. A core rod 7 is disposed in the outside barrel 6 and the powder material is packed in the molding barrel 5 which is sealed at the top and bottom by plugs 8 and this is mounted into the partition barrel 5. Next, pressing oil 2 is injected into the vessel 1 through an injection port 3 and the powder material is pressure- molded by way of the outside barrel 6 in the direction rectangular to the axis, whereby the hollow anisotropic magnet is obtained. This increases the surface magnetic flux density and improves the performance by about 10W20%, thus enabling the obtaining of the magnet which is reduced by about 50% in its axial surface magnetic flux density difference.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6237779A JPS55154504A (en) | 1979-05-21 | 1979-05-21 | Production of anisotropic magnet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6237779A JPS55154504A (en) | 1979-05-21 | 1979-05-21 | Production of anisotropic magnet |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55154504A true JPS55154504A (en) | 1980-12-02 |
Family
ID=13198355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6237779A Pending JPS55154504A (en) | 1979-05-21 | 1979-05-21 | Production of anisotropic magnet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55154504A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0646937A1 (en) * | 1990-11-30 | 1995-04-05 | Intermetallics Co., Ltd. | Method for producing a permanent magnet and an apparatus for producing a green compact |
-
1979
- 1979-05-21 JP JP6237779A patent/JPS55154504A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0646937A1 (en) * | 1990-11-30 | 1995-04-05 | Intermetallics Co., Ltd. | Method for producing a permanent magnet and an apparatus for producing a green compact |
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