JPS6453512A - Magnetization of permanent magnet - Google Patents
Magnetization of permanent magnetInfo
- Publication number
- JPS6453512A JPS6453512A JP21109487A JP21109487A JPS6453512A JP S6453512 A JPS6453512 A JP S6453512A JP 21109487 A JP21109487 A JP 21109487A JP 21109487 A JP21109487 A JP 21109487A JP S6453512 A JPS6453512 A JP S6453512A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- ring
- magnetization
- shaped permanent
- magnetizing head
- 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
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
PURPOSE:To execute a strong magnetization operation while the leakage of magnetism is eliminated by a method wherein magnetic shield plates composed of a superconducting material are arranged on both sides of a magnetizing head, a ring- shaped permanent magnet is rotated, a magnetic field is impressed on the ring-shaped permanent magnet from the magnetizing head while it is synchronized with a turning operation of the magnet and a multiple magnetization operation is executed. CONSTITUTION:First, Dy.6H2O, Ba and Cu.H2O are put in pure water; they are stirred and dispersed. Then, this mixture is dried and baked; an obtained fine powder is baked; a thermoplastic resin powder is added to it, mixed and dispersed. Then, while the mixture is heated, it is kneaded; after that, it is cooled and cut to form pellels. Then, the pellets are heated and molded by using a press; it is cooled; after that, they are arranged on both sides of a magnetizing head 1 of a multipole magnetization device and are used as magnetic shield plates 3. A ring-shaped permanent magnet with an outer diameter phi of 45 and an inner diameter phi of 42mm composed of an Nd-Fe-B-based permanent magnet powder and a thermoplastic resin is set in this device; it is rotated by using a rotary mechanism; electricity is supplied to a coil from a separately installed BC power supply device while a turning operation is synchronized with the supply of electricity; 200 poles are magnetized on its periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21109487A JPS6453512A (en) | 1987-08-25 | 1987-08-25 | Magnetization of permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21109487A JPS6453512A (en) | 1987-08-25 | 1987-08-25 | Magnetization of permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6453512A true JPS6453512A (en) | 1989-03-01 |
Family
ID=16600313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21109487A Pending JPS6453512A (en) | 1987-08-25 | 1987-08-25 | Magnetization of permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6453512A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291780A1 (en) * | 2009-02-10 | 2011-12-01 | Ntn Corporation | Method of magnetizing magnetic encoder and magnetizing apparatus |
| JP2014038939A (en) * | 2012-08-16 | 2014-02-27 | Ntn Corp | Magnetizing device for magnetic encoder |
| CN106098294A (en) * | 2016-08-17 | 2016-11-09 | 常熟市众盈电子有限公司 | A kind of New magnetizing machine |
-
1987
- 1987-08-25 JP JP21109487A patent/JPS6453512A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291780A1 (en) * | 2009-02-10 | 2011-12-01 | Ntn Corporation | Method of magnetizing magnetic encoder and magnetizing apparatus |
| US8436705B2 (en) * | 2009-02-10 | 2013-05-07 | Ntn Corporation | Method of magnetizing magnetic encoder and magnetizing apparatus |
| JP2014038939A (en) * | 2012-08-16 | 2014-02-27 | Ntn Corp | Magnetizing device for magnetic encoder |
| US9691534B2 (en) | 2012-08-16 | 2017-06-27 | Ntn Corporation | Magnetization device for magnetic encoder |
| CN106098294A (en) * | 2016-08-17 | 2016-11-09 | 常熟市众盈电子有限公司 | A kind of New magnetizing machine |
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