JPS61147997A - Dry process cold hot hydrostatic magnetic field press device - Google Patents
Dry process cold hot hydrostatic magnetic field press deviceInfo
- Publication number
- JPS61147997A JPS61147997A JP59269553A JP26955384A JPS61147997A JP S61147997 A JPS61147997 A JP S61147997A JP 59269553 A JP59269553 A JP 59269553A JP 26955384 A JP26955384 A JP 26955384A JP S61147997 A JPS61147997 A JP S61147997A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- powder
- coil
- static magnetic
- field coil
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/008—Applying a magnetic field to the material
Abstract
Description
【発明の詳細な説明】
本発明は、均質かつ高密度な、異方性及び等方性のフェ
ライト希土類磁石を成型可能な乾式冷開水圧磁場プレス
装置に間するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a dry cold open hydraulic magnetic field press device capable of molding homogeneous, high-density, anisotropic and isotropic ferrite rare earth magnets.
従来、異方性、等方性磁石は、乾式磁場成型方式または
湿式磁場成型方式によって行なっているが、前者は成型
体の形態を金型の形状によって種々に作れるが、粉末の
配向性が悪い。また後者は粉末の配向性は良好であるが
、製作できる形態が限定される。更に、両方共に、圧粉
体の成型密度が不均一であるため、成型体の亀裂が発生
しやすい欠点がある。また成型密度をある所定の圧力以
上に上げることが不可能である。Conventionally, anisotropic and isotropic magnets have been produced using a dry magnetic field molding method or a wet magnetic field molding method, but the former allows molded bodies to be formed in various forms depending on the shape of the mold, but the orientation of the powder is poor. . In addition, although the latter has good powder orientation, the forms that can be manufactured are limited. Furthermore, in both cases, the molded powder density is non-uniform, so cracks are likely to occur in the molded product. Furthermore, it is impossible to increase the molding density above a certain predetermined pressure.
本発明はこれらの欠点を除去するため、成型体の磁場配
向を容易にし、しがも高密度の圧粉体を得るこの種の乾
式冷間水圧磁場プレス（以下、ＣＩＰＭＲという）装置
を提案することを主たる目的とする。In order to eliminate these drawbacks, the present invention proposes this type of dry cold hydraulic magnetic field press (hereinafter referred to as CIPMR) apparatus that facilitates the magnetic field orientation of the molded body and obtains a high-density green compact. The main purpose is to
以下本発明の一実施例について図面を参照しながら詳細
に説明する。An embodiment of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の一例を示す断面図である。１は静磁場
コイル、２はパルス磁場コイ・ル、３は加圧ラバー、４
はウレタンラバー（処理物保持用）、５は粉末（スラリ
ー状または乾燥粉末）、６は加圧容器（非磁性体）、７
はプレス７レーム、８は上パンチ、９は下パンチ、１０
はフィルタ、１１はスラリー媒体脱水孔、１２は加圧口
、１３はパルスコイル電流投入口、１４は処理物脱着用
シリングである。FIG. 1 is a sectional view showing an example of the present invention. 1 is a static magnetic field coil, 2 is a pulsed magnetic field coil, 3 is a pressure rubber, 4
is urethane rubber (for holding the processed material), 5 is powder (slurry or dry powder), 6 is pressurized container (non-magnetic material), 7 is
is press 7 frame, 8 is upper punch, 9 is lower punch, 10
1 is a filter, 11 is a slurry medium dehydration hole, 12 is a pressurizing port, 13 is a pulse coil current input port, and 14 is a shilling for removing and removing the processed material.
第２図はＣＩＰＭＲの冷却装置の一例を示す路線図であ
る。１５は加圧媒体、１６は増圧機、１７は逆上弁、１
８１ｉＣＩＰＭＲ本体、１９は加圧力計、２０はストッ
プバルブを夫々示している。FIG. 2 is a route map showing an example of a CIPMR cooling system. 15 is a pressurized medium, 16 is a pressure booster, 17 is a reverse valve, 1
81i CIPMR main body, 19 indicates a pressure gauge, and 20 indicates a stop valve.
そして冷却方法は、増圧＠１６にて加圧媒体１５を吸い
込み、ストップバブル２０を解放し、加圧媒体１５を循
環させるこ“とが最良の方法である。The best cooling method is to draw in the pressurized medium 15 at increased pressure @16, release the stop bubble 20, and circulate the pressurized medium 15.
次に本発明の動作について説明する。まず、処理物脱着
用シリンダ１４を降下させ、下パン千９１こ、フィルタ
１０及びウレタンラバー（処理物保持用）４を装着し、
このウレタンラバー（処理物保持用）４中に粉末（スラ
リー状または乾燥粉末）５を投入する。投入後、粉末５
の上部にフィルタ１０を装着する。次に処理物脱着用シ
リング１４を上昇させ、止具ン与８とフィルタ１０とを
装着させ、下バンチ９の上昇に伴なって加圧状態とする
（第３図Ｃ参照）。Next, the operation of the present invention will be explained. First, the cylinder 14 for removing and removing the processed material is lowered, and the lower pan 191, filter 10 and urethane rubber (for holding the processed material) 4 are attached.
Powder (slurry or dry powder) 5 is put into this urethane rubber (for holding the processed material) 4. After adding powder 5
Attach the filter 10 to the top of the screen. Next, the sill 14 for removing and removing the processed material is raised, the stopper 8 and the filter 10 are attached, and as the lower bunch 9 is raised, the pressure is applied (see FIG. 3C).
次に、パルス磁場フィル２を励磁し、粉末５を配向する
（第３図Ｃ参照）。このとき、パルス磁場コイル２はか
なり発熱するので、励磁している間、第２図に示す冷却
システムで冷却するようにするにの場合、パルス磁場コ
イル２は加圧容器６内に浮かせているので、加圧媒体１
５は絶縁油（シリコンオイル等）を使用するのが好適で
ある。Next, the pulsed magnetic field field 2 is excited to orient the powder 5 (see FIG. 3C). At this time, the pulsed magnetic field coil 2 generates a considerable amount of heat, so if the cooling system shown in FIG. Therefore, pressurized medium 1
5 is preferably an insulating oil (silicone oil, etc.).
パルス磁場フィル２で配向された粉末５は、配向完了後
、配向が直ちに崩れるので、パルス励磁完了直後に静磁
場フィル１を励磁し、プレスフレーム７を利用して静磁
場を発生させ、粉末５の配向性を維持する（第３図Ｃ参
照）。このときの静磁場の強さは、パルス磁場の約１／
３程度とすることができる。The powder 5 oriented by the pulsed magnetic field fill 2 loses its orientation immediately after the orientation is completed, so the static magnetic field fill 1 is excited immediately after the completion of the pulse excitation, a static magnetic field is generated using the press frame 7, and the powder 5 is oriented. maintains the orientation (see Figure 3C). The strength of the static magnetic field at this time is approximately 1/1 of the pulse magnetic field.
It can be about 3.
次に、配向した粉末５を静磁場中で扁圧する。Next, the oriented powder 5 is compressed in a static magnetic field.
増圧機１６はパル蔓磁場フィル２を冷却する目的ですぐ
に作動しているので、加圧開始時点ではス）７プバルブ
２０を閉め込むだけで昇圧される。Since the pressure booster 16 is activated immediately for the purpose of cooling the pulse magnetic field filter 2, the pressure is increased by simply closing the step valve 20 at the start of pressurization.
−加圧は、加圧口１２より加圧媒体（シリコンオイル等
）１５を増圧機１６によって注入され、油圧計１９を見
ながら所定の加圧を得る。このとき、粉末５がスラリー
状の場合には、スラリー媒体脱水孔１１よりスラリー媒
体がフィルタ１０を通して除去されることになる。- For pressurization, a pressurizing medium (such as silicone oil) 15 is injected from the pressurizing port 12 by the pressure intensifier 16, and a predetermined pressurization is obtained while checking the oil pressure gauge 19. At this time, if the powder 5 is in the form of a slurry, the slurry medium is removed from the slurry medium dehydration hole 11 through the filter 10.
加圧保持完了後、静磁場コイル１の励磁を止め、ストッ
プバルブ２０を徐々に解放して加圧を解放する（第３図
り参照）。次に、処理物脱着用シリング１４を降下させ
、フィルタ１０、ウレタンラバー（処理物保持用）４の
順に分解して処理物を取り出すことになる。
゛
以上述′べたごとく本発明によれば、乾式冷間静水圧プ
レス装置にパル又磁場コイル、静磁場コイルを取り付け
、該磁場内で粉末成型を行なうようにしたので、
従来の磁場プレスで問題となってνまた配向性、圧粉密
度のバラツキによる処理物のヒビ、スリ・ノブ等が著し
く改善され、良質な異方性、等方性の磁石を提供するこ
とができる効果を有する。また高加圧力（最大３０００
ｋｇ／ Ｃｍ２）にて成型を行なう乾式冷間静水圧磁
場プレス装置の提供が可能となり、更にウレタンラバー
（処理保持用）４の工夫により、複雑形状の磁石、中子
の使用による中空長尺物の磁石等も高品質に容易に成型
できるようになる。After the pressurization is maintained, the excitation of the static magnetic field coil 1 is stopped, and the stop valve 20 is gradually released to release the pressurization (see the third diagram). Next, the sill 14 for removing and removing the processed material is lowered, and the filter 10 and the urethane rubber (for holding the processed material) 4 are disassembled in this order, and the processed material is taken out.
As described above, according to the present invention, a magnetic field coil and a static magnetic field coil are attached to a dry cold isostatic press apparatus, and powder molding is performed within the magnetic field, which eliminates problems with conventional magnetic field presses. Also, cracks, slits, knobs, etc. in the processed product due to variations in orientation and powder density are significantly improved, and it is possible to provide magnets with high quality anisotropy and isotropy. Also, high pressure (up to 3000
It is now possible to provide a dry cold isostatic magnetic field press machine that performs molding at 1 kg/cm2), and with the ingenuity of urethane rubber (for processing and holding) 4, it is possible to form hollow long objects by using complex-shaped magnets and cores. magnets, etc. can be easily molded to high quality.
第１図は本発明の一例を示す断面図、第２図は＾＋＋覧
＋ｈ−□Ａ Ｊ−ｎ仙−１醒上二ニー艙闘 債う図は本
発明装置の作動説明図である。
１・・・静磁場コイル、２・・・パルス磁場コイル、３
・・・加圧ラバー、４・・・ウレタンラバー（処理物保
持用）、５・・・粉末（スラリー状または乾燥粉末）、
６・・・加圧容器（非磁性体）、７・・・プレスフレー
ム、８・・・上パンチ、９・・・下バンチ、１０・・・
フィルタ、１１・・・スラリー媒体脱水孔、１２・・・
加圧口、１３・・・・パルスコイル電流投入口、１４・
・・処理物脱着用シリンダ、ＩＳ・・・加圧媒体、１６
・・・増圧機、１７・・・逆上弁、１８・・・ＣＩＰＭ
Ｒ本体、１９・・・加圧力計、２０・・・ストップバル
ブ。
出願人代理人 弁理士 秋 山 高第１図
第２図FIG. 1 is a sectional view showing an example of the present invention, and FIG. 2 is a diagram illustrating the operation of the apparatus of the present invention. 1... Static magnetic field coil, 2... Pulse magnetic field coil, 3
... Pressure rubber, 4... Urethane rubber (for holding the processed material), 5... Powder (slurry form or dry powder),
6... Pressurized container (non-magnetic material), 7... Press frame, 8... Upper punch, 9... Lower bunch, 10...
Filter, 11... Slurry medium dehydration hole, 12...
Pressure port, 13...Pulse coil current input port, 14...
・Cylinder for desorption of processed material, IS ・Pressure medium, 16
... Pressure booster, 17... Reverse valve, 18... CIPM
R body, 19... Pressure gauge, 20... Stop valve. Applicant's agent Patent attorney Takashi Akiyama Figure 1 Figure 2
Claims (1)
コイルを取り付け、該磁場内で粉末成型を行なうように
したことを特徴とする乾式冷間静水圧磁場プレス装置。1. A dry cold isostatic press apparatus, characterized in that a pulse magnetic field coil and a static magnetic field coil are attached to the dry cold isostatic press apparatus, and powder molding is performed within the magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59269553A JPS61147997A (en) | 1984-12-20 | 1984-12-20 | Dry process cold hot hydrostatic magnetic field press device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59269553A JPS61147997A (en) | 1984-12-20 | 1984-12-20 | Dry process cold hot hydrostatic magnetic field press device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61147997A true JPS61147997A (en) | 1986-07-05 |
| JPH0426959B2 JPH0426959B2 (en) | 1992-05-08 |
Family
ID=17473979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59269553A Granted JPS61147997A (en) | 1984-12-20 | 1984-12-20 | Dry process cold hot hydrostatic magnetic field press device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147997A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5250255A (en) * | 1990-11-30 | 1993-10-05 | Intermetallics Co., Ltd. | Method for producing permanent magnet and sintered compact and production apparatus for making green compacts |
| US5505990A (en) * | 1992-08-10 | 1996-04-09 | Intermetallics Co., Ltd. | Method for forming a coating using powders of different fusion points |
| DE19728418A1 (en) * | 1996-07-04 | 1998-01-08 | Aichi Steel Works Ltd | Manufacturing process for anisotropic resin-bonded magnets |
-
1984
- 1984-12-20 JP JP59269553A patent/JPS61147997A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5250255A (en) * | 1990-11-30 | 1993-10-05 | Intermetallics Co., Ltd. | Method for producing permanent magnet and sintered compact and production apparatus for making green compacts |
| US5505990A (en) * | 1992-08-10 | 1996-04-09 | Intermetallics Co., Ltd. | Method for forming a coating using powders of different fusion points |
| DE19728418A1 (en) * | 1996-07-04 | 1998-01-08 | Aichi Steel Works Ltd | Manufacturing process for anisotropic resin-bonded magnets |
| US5886070A (en) * | 1996-07-04 | 1999-03-23 | Aichi Steel Works, Ltd. | Production method for anisotropic resin-bonded magnets |
| DE19728418C2 (en) * | 1996-07-04 | 2003-07-24 | Aichi Steel Works Ltd | Manufacturing process for anisotropic resin-bonded magnets |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426959B2 (en) | 1992-05-08 |
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