JPS6428303A - Production of sintered magnet alloy - Google Patents
Production of sintered magnet alloyInfo
- Publication number
- JPS6428303A JPS6428303A JP18356187A JP18356187A JPS6428303A JP S6428303 A JPS6428303 A JP S6428303A JP 18356187 A JP18356187 A JP 18356187A JP 18356187 A JP18356187 A JP 18356187A JP S6428303 A JPS6428303 A JP S6428303A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- binder
- mixture
- sintered magnet
- rate
- 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
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE:To efficiently produce a sintered magnet alloy by greatly increasing the specified heating up rate of a binder removing atmosphere at the time of kneading magnetic alloy powder contg. Y or rare earth elements with a binder, kneading the mixture and subjecting the mixture to injection molding, then removing the binder from the molding and sintering the molding. CONSTITUTION:A thermoplastic resin is kneaded as the binder with the powder of the magnetic alloy contg. Y or rare earth elements and the mixture is injection-molded to a desired irregular shape by an injection molding device. This molding is heated to about 250 deg.C at the high heating up rate of 2-10 deg.C/min in a vacuum atmosphere of <=10<-4> Torr pressure to completely remove the binder incorporated into the molding and thereafter, the molding is sintered at about 1190 deg.C and is slowly cooled down to 850 deg.C at 1 deg.C/min cooling rate. The molding is then rapidly cooled down to ordinary temp. The sintered magnet alloy which is free from cracking and deformation by the heating and the cooling and has excellent magnetic characteristics is thus efficiently produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18356187A JPS6428303A (en) | 1987-07-24 | 1987-07-24 | Production of sintered magnet alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18356187A JPS6428303A (en) | 1987-07-24 | 1987-07-24 | Production of sintered magnet alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6428303A true JPS6428303A (en) | 1989-01-30 |
Family
ID=16137957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18356187A Pending JPS6428303A (en) | 1987-07-24 | 1987-07-24 | Production of sintered magnet alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6428303A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03257101A (en) * | 1990-03-08 | 1991-11-15 | Kawasaki Steel Corp | Method for degreasing powder green compact |
| US5266264A (en) * | 1991-12-31 | 1993-11-30 | The Japan Steel Works Ltd. | Process for producing sinters and binder for use in that process |
| US5427734A (en) * | 1992-06-24 | 1995-06-27 | Sumitomo Special Metals Co., Ltd. | Process for preparing R-Fe-B type sintered magnets employing the injection molding method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123123A (en) * | 1984-11-20 | 1986-06-11 | 松下電器産業株式会社 | Manufacture of sintered type electrolytic battery |
| JPS62122108A (en) * | 1985-11-21 | 1987-06-03 | Mitsubishi Metal Corp | Manufacture of sintered rare earth magnet |
-
1987
- 1987-07-24 JP JP18356187A patent/JPS6428303A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61123123A (en) * | 1984-11-20 | 1986-06-11 | 松下電器産業株式会社 | Manufacture of sintered type electrolytic battery |
| JPS62122108A (en) * | 1985-11-21 | 1987-06-03 | Mitsubishi Metal Corp | Manufacture of sintered rare earth magnet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03257101A (en) * | 1990-03-08 | 1991-11-15 | Kawasaki Steel Corp | Method for degreasing powder green compact |
| US5266264A (en) * | 1991-12-31 | 1993-11-30 | The Japan Steel Works Ltd. | Process for producing sinters and binder for use in that process |
| US5427734A (en) * | 1992-06-24 | 1995-06-27 | Sumitomo Special Metals Co., Ltd. | Process for preparing R-Fe-B type sintered magnets employing the injection molding method |
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