JPS62252119A - Manufacture of radial anisotropic magnet - Google Patents
Manufacture of radial anisotropic magnetInfo
- Publication number
- JPS62252119A JPS62252119A JP9528286A JP9528286A JPS62252119A JP S62252119 A JPS62252119 A JP S62252119A JP 9528286 A JP9528286 A JP 9528286A JP 9528286 A JP9528286 A JP 9528286A JP S62252119 A JPS62252119 A JP S62252119A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- radial anisotropic
- anisotropic magnet
- magnetic
- magnet
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000006247 magnetic powder Substances 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 6
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 238000000748 compression moulding Methods 0.000 claims abstract description 3
- 150000003624 transition metals Chemical group 0.000 claims 2
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052786 argon Inorganic materials 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 230000005415 magnetization Effects 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- -1 gold metals Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、基本組成が希土類金属、鉄およびボロンから
なるラジアル異方性磁石に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radially anisotropic magnet whose basic composition is a rare earth metal, iron and boron.
従来、ラジアル異方性永久磁石の圧縮成形の配向磁場と
しては、直流電源による静的な磁場が用いられていた。Conventionally, a static magnetic field generated by a DC power source has been used as an orienting magnetic field for compression molding of radially anisotropic permanent magnets.
しかしながら、直流電源による静的な磁場を用いるとす
ると、大きな磁場を得るためには大掛かシな電源や大規
模なコイルが必賛となり、さらには発熱・消費電力も冷
却水といったラシニングコスト等の関係から、成形高さ
が低いものや低配向のラジアル異方性永久磁石しか得ら
れないといつｔ問題点を有している。However, if a static magnetic field from a DC power source is used, in order to obtain a large magnetic field, a large-scale power supply and large-scale coil are required, and furthermore, heat generation and power consumption are required, as well as cooling water and other lashing costs. Due to this relationship, there is a problem when only radial anisotropic permanent magnets with a low molding height or low orientation can be obtained.
本発明は以上の問題点を解決するもので、その目的とす
るところは製造工程および装置が簡便で、かつラジアル
異方性永久磁石の磁気性能な向上させ、厚肉、長尺のラ
ジアル異方性永久磁石を実現するラジアル異方性永久磁
石の製造方法を提供することにある。The present invention has been made to solve the above-mentioned problems, and its purpose is to simplify the manufacturing process and equipment, improve the magnetic performance of radially anisotropic permanent magnets, and improve the magnetic performance of thick-walled and long radially anisotropic permanent magnets. An object of the present invention is to provide a method for manufacturing a radially anisotropic permanent magnet that realizes a radially anisotropic permanent magnet.
本発明のラジアル異方性永久磁石の製造方法は、パルス
磁場で配向して磁性粉末を圧縮成形することを特徴とす
る特
なお、基本組成が希土類金橘、鉄およびボロンからなる
希土類永久磁石としてはＮｄ−Ｆｅ−ａ磁石が知られて
いるが、希土類金属としては、Ｙ。The method for manufacturing a radially anisotropic permanent magnet of the present invention is characterized in that magnetic powder is compressed and oriented in a pulsed magnetic field. Although Nd-Fe-a magnets are known as rare earth metals, Y.
Ｌａ、 Ｃｏ、 Ｐｒ、 Ｎｄ、 Ｐｍ、 Ｓｍ、 Ｉ
ｎ、 Ｇｄ、 Ｔｂ。La, Co, Pr, Nd, Pm, Sm, I
n, Gd, Tb.
Ｄｙ、Ｈｏ、Ｅｒ、Ｔｒｎ、Ｙｂ＆よびしＵの希土類元
素のうちの１ａ！または２橿以上であれば艮く、ジジム
（Ｐｒ−Ｎｄ）やセリウム・ジジム（Ｃｅ−Ｐｒ −Ｎ
ｄ）でも十分な磁気性能が得られ、供給面・価格面から
有第１」である。さらに、Ｄｙ−？Ｔｂ等の重布土頌元
素の少”艙添加により、保磁力ＩＨｃを増大させること
ができ、温度特性の実質的な改善が達成される。1a of the rare earth elements Dy, Ho, Er, Trn, Yb & U! Or, if it is more than 2 rods, it will be rejected.
d) also provides sufficient magnetic performance, making it the best in terms of supply and price. Furthermore, Dy-? By adding a small amount of a heavy metal element such as Tb, the coercive force IHc can be increased and a substantial improvement in temperature characteristics can be achieved.
また、鉄の一部ケコバルトでｅ換することによりキュー
リ一温度の向上が計られ、残留磁化Ｂｒの温度係数も改
善され、他の４＃金金属で置換しても磁気性能や耐食性
等が改善される。In addition, by replacing some of the iron with kecobalt, the Curie temperature was improved, the temperature coefficient of residual magnetization Br was also improved, and magnetic performance and corrosion resistance were improved even when replacing with other 4# gold metals. be done.
以下、本発明について実施例に基づいて詳細に祝明する
。Hereinafter, the present invention will be celebrated in detail based on examples.
（実施例−１）
Ｎｄ＋ａ Ｆ ６７７ Ｂｇ の組成になるように高
周波溶解炉を用いアルゴンガス雰囲気中で溶解、鋳造し
た合金ラスタンプミル、ボールミルを用い磁性粉末とし
た◇
この磁性粉末を円筒状の型に充填させ、ラジアル方向に
パルス磁場を用い様々な磁場で磁場配向させ、それに同
期させてソレノイドを用いて圧縮成形し、円筒状成形体
を作成した。こｒＬをアルゴンガス雰囲気中で１０００
〜１２００℃の最Ｊ温度で焼結、４００〜１０００℃の
最適温度で時効を施し丸。(Example-1) An alloy was melted and cast in an argon gas atmosphere using a high-frequency melting furnace to obtain a composition of Nd + a F 677 Bg. Magnetic powder was made using a rust stamp mill and a ball mill. ◇ This magnetic powder was made into a cylindrical shape. The mixture was filled into a mold, oriented in various magnetic fields using a pulsed magnetic field in the radial direction, and compression molded using a solenoid in synchronization with the magnetic field to create a cylindrical molded body. This rL was heated to 1,000 liters in an argon gas atmosphere.
Sintered at the maximum J temperature of ~1200℃ and aged at the optimum temperature of 400~1000℃.
また、比較例として、従来用いられてきたように、直流
磁場と油圧プレスにより円筒状成形体７作成し、本発明
と同様な方法を用い焼結、時効を施した。Further, as a comparative example, a cylindrical molded body 7 was prepared using a DC magnetic field and a hydraulic press as conventionally used, and sintered and aged using the same method as in the present invention.
得られ九円筒状磁石を切り出し貼り合わせることによ’
）、ａｘａｘ １０ｇ１のブロックを作成、ＢＨトレー
サーを用い磁気測ボを行なつ之。ＷＪ１図に配回磁場と
絡和磁化の関係を示した。By cutting out and pasting together nine cylindrical magnets,
), create a block of axax 10g1, and perform magnetic measurement using a BH tracer. The WJ1 diagram shows the relationship between the magnetic field and the entanglement magnetization.
第１図から明らかなように、比較例と比べて、低い磁場
で、高い飽和磁化が、即ち高い配向度か得られているこ
とが分かる。As is clear from FIG. 1, it can be seen that a high saturation magnetization, that is, a high degree of orientation, was obtained in a lower magnetic field than in the comparative example.
（実施例−２）
Ｎｄ、、、うＤ）’＋、ａ Ｆ ６６？ ＣＧ＋。Ｂ６
となるように、実施例−１と同様な方法を用い、所定の
磁性粉末を作成し、この磁性粉末な外径２０ｍ＋＋、内
径１８喘の型に充填させ、パルス磁場でラジアル方向に
磁場配向させ、様々な成形高さの円筒状成形体を作成し
、焼結、時効を施した。(Example-2) Nd,,,UD)'+,a F 66? CG+. B6
A predetermined magnetic powder was prepared using the same method as in Example 1, and this magnetic powder was filled into a mold with an outer diameter of 20 m++ and an inner diameter of 18 mm, and the magnetic powder was oriented in the radial direction using a pulsed magnetic field. , cylindrical molded bodies of various molding heights were created, sintered and aged.
ま九、比較例として、ｌｆ′ａ磁場と油圧プレスによシ
様々な成形高さの円筒状成形体を作成し、焼結、時効な
施した。As a comparative example, cylindrical molded bodies of various molding heights were prepared using an lf'a magnetic field and a hydraulic press, and sintered and aged.
実施例−１と同様に磁化測定を行なった。第２図に成形
高さと飽和磁化の関係を示した。Magnetization measurements were performed in the same manner as in Example-1. Figure 2 shows the relationship between molding height and saturation magnetization.
第２図から明らかなように、比較例と比べて、高い成形
高さで、篩い飽オロ磁化が、即ち高い配向度が侍られて
いることが分かる。つまり、従来に比べて長尺のラジア
ル異方性磁石が得られる訳である。As is clear from FIG. 2, it can be seen that, compared to the comparative example, at a higher molding height, a sieve saturation magnetization, that is, a higher degree of orientation is observed. In other words, a longer radially anisotropic magnet can be obtained than in the past.
（実施例−３）
（ＣｓｇＰ Ｔｏ、ｚＮｄｑｓ Ｄ７ｏ、ｔ ）＋ｓ
Ｆ ＠ｅｙｃ Ｏ＋ｏ Ｂｇとなるように、実施例−１
と同様な方法を用い、所定の磁性粉末を作成し、この磁
性粉末を外径ｚ Ｇ ！ＩＩ！ｌ、内径を様々に変えた
型に充填させ、パルス磁場でラジアル方向に磁場配向さ
せ、成形高さの円筒状成形体を作成し、焼結、時効を施
した。(Example-3) (CsgP To, zNdqs D7o, t )+s
Example-1 so that F @eyc O+o Bg
A predetermined magnetic powder is prepared using a method similar to the above, and the outer diameter of this magnetic powder is z G ! II! 1. Molds with various inner diameters were filled with the material, the magnetic field was oriented in the radial direction using a pulsed magnetic field, a cylindrical molded product with a molding height was created, and the material was sintered and aged.
また、比較例として、直流磁場と油圧プレスによシ様々
な内径の円筒状成形体を作成し、焼結、時効を施した。In addition, as a comparative example, cylindrical molded bodies with various inner diameters were created using a DC magnetic field and a hydraulic press, and were sintered and aged.
実施例−１と同様に磁化測定を行なった。第５図に内径
と飽和磁化の関係を示した。Magnetization measurements were performed in the same manner as in Example-1. Figure 5 shows the relationship between inner diameter and saturation magnetization.
＄３図から明らかなように、比較例と比べて、小さな内
径で即ち大きな肉厚で、高い飽和磁化が、即ち高い配向
度が得られていることが分かる。つまり、従来に比べて
厚肉のラジアル異方性磁石が・痔られる訳である。As is clear from Figure 3, it can be seen that a high saturation magnetization, that is, a high degree of orientation, is obtained with a small inner diameter, that is, a large wall thickness, compared to the comparative example. In other words, a radially anisotropic magnet with a thicker wall than the conventional one is used.
（実施例−４ン
実施例−５の磁性粉末を用い、パルス磁場でラジアル方
向に磁場配向させ、外径８請、内径６ｍ。(The magnetic powder of Example 4 and Example 5 was used and oriented in the radial direction with a pulsed magnetic field, with an outer diameter of 8 m and an inner diameter of 6 m.
商さσ珊の円筒状磁石を作成した。A cylindrical magnet of σ coral was created.
また、比較例として、直流磁場と油圧プレスにより同僚
の円筒状磁石を作成した。As a comparative example, a colleague created a cylindrical magnet using a DC magnetic field and a hydraulic press.
この円筒状磁石をロータに組み込んでステンピングモー
タとし、本発明および比較例の５Ｖ、２０Ω、４相、ユ
ニボー２，１枢動パルスレート・トルク特性図を第４図
に示す・
＠４図から明らかなように、比較例と比べても、本発明
は大変間い特性を示している。This cylindrical magnet is incorporated into the rotor to make a stamping motor, and the 5V, 20Ω, 4-phase, Unibo 2,1 pivoting pulse rate/torque characteristics diagram of the present invention and comparative example are shown in Figure 4. @From Figure 4 As is clear, the present invention exhibits very fast characteristics even when compared with the comparative example.
以上述べたように、本発明によれば、基本組成が希土類
金属、鉄およびボロンからなる研性粉末をパルス磁場を
用いラジアル方向に配向し圧縮成形することにより、低
い磁場でも高い配向を示し、ラジアル異方性磁石の磁気
性能を向上させ、厚肉、長尺のラジアル異方性磁石を実
現し、かつパルス磁場は直流磁場に比べて大きな磁場が
得られ易く、刃口えて、油圧プレスのような大掛かりな
装置も必要なくなるので、製造工程および装置が簡便と
なり、さらにステンピングモータの尚出力化、小型化が
実現でき、応用面にも多大の効果を有するものである。As described above, according to the present invention, abrasive powder whose basic composition is rare earth metal, iron, and boron is oriented in the radial direction using a pulsed magnetic field and compression molded, thereby exhibiting high orientation even in a low magnetic field. By improving the magnetic performance of radial anisotropic magnets, we have realized thick-walled and long radial anisotropic magnets, and the pulsed magnetic field makes it easier to obtain a larger magnetic field than the DC magnetic field. Since such a large-scale device is no longer necessary, the manufacturing process and device are simplified, and furthermore, the output of the stamping motor can be increased and the size of the stamping motor can be increased, which has great effects in terms of application.
ｗｃ１図は配向磁場と飽和磁化の関係図。
第２図は成形高さと飽和磁化の関係図。
第６図は内極と飽和磁化の関係図。
第４図はパルスレート・トルク特性図である・以上
第１誌
０ ５ ＋ｏ １５ ２０
ユタ戒形高ぐ〔情調〕
第２図
′ タ ／ρ ／ｒ ！ρ内ぐセ
〔、、戦〕
ρ 樽 勤 ７Ｑ ／ρｙ ／λＱ八０へ
スし一μ ＣＰＰＲ）The wc1 diagram is a diagram showing the relationship between the orientation magnetic field and the saturation magnetization. Figure 2 is a diagram showing the relationship between molding height and saturation magnetization. Figure 6 is a diagram showing the relationship between the inner pole and saturation magnetization. Figure 4 is a pulse rate/torque characteristic diagram.
Yuta Kaigata high [tempo] Fig. 2′ ta /ρ /r! ρ Uchiguse [,, war] ρ Taru Tsutomu 7Q /ρy /λQ80 Hesshi 1μ CPPR)
Claims (2)
磁性粉末をパルス磁場を用いラジアル方向に配向し圧縮
成形することを特徴とするラジアル異方性磁石の製造方
法。(1) A method for producing a radially anisotropic magnet, which comprises oriented magnetic powder in the radial direction using a pulsed magnetic field and compression molding the magnetic powder whose basic composition is a rare earth metal, iron, and boron.
属群から選ばれた少なくとも１種以上の遷移金属群で置
換した特許請求の範囲第１項に記載のラジアル異方性磁
石の製造方法。(2) The radial anisotropic magnet according to claim 1, wherein a part of the iron is replaced with at least one transition metal group selected from the transition metal group other than iron, such as cobalt. Production method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9528286A JPS62252119A (en) | 1986-04-24 | 1986-04-24 | Manufacture of radial anisotropic magnet |
| JP2003205A JPH02224208A (en) | 1986-04-24 | 1990-01-10 | Manufacture of radial anisotropic magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9528286A JPS62252119A (en) | 1986-04-24 | 1986-04-24 | Manufacture of radial anisotropic magnet |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003205A Division JPH02224208A (en) | 1986-04-24 | 1990-01-10 | Manufacture of radial anisotropic magnet |
| JP2003206A Division JPH02229404A (en) | 1990-01-10 | 1990-01-10 | Stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62252119A true JPS62252119A (en) | 1987-11-02 |
Family
ID=14133417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9528286A Pending JPS62252119A (en) | 1986-04-24 | 1986-04-24 | Manufacture of radial anisotropic magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62252119A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55115319A (en) * | 1979-02-27 | 1980-09-05 | Inoue Japax Res Inc | Manufacturing method of rubber magnet |
| JPS5674907A (en) * | 1979-11-24 | 1981-06-20 | Tdk Corp | Manufacturing process of permanent magnet magnetized in radial direction |
| JPS58200518A (en) * | 1982-05-18 | 1983-11-22 | Mitsubishi Metal Corp | Formation of magnetic field of powder |
| JPS59216453A (en) * | 1983-05-20 | 1984-12-06 | Hitachi Metals Ltd | Manufacture of cylindrical permanent magnet |
| JPS60153109A (en) * | 1984-01-21 | 1985-08-12 | Sumitomo Special Metals Co Ltd | Permanent magnet |
| JPS61154118A (en) * | 1984-12-27 | 1986-07-12 | Tdk Corp | Molding method in magnetic field of rare earth magnet and device thereof |
-
1986
- 1986-04-24 JP JP9528286A patent/JPS62252119A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55115319A (en) * | 1979-02-27 | 1980-09-05 | Inoue Japax Res Inc | Manufacturing method of rubber magnet |
| JPS5674907A (en) * | 1979-11-24 | 1981-06-20 | Tdk Corp | Manufacturing process of permanent magnet magnetized in radial direction |
| JPS58200518A (en) * | 1982-05-18 | 1983-11-22 | Mitsubishi Metal Corp | Formation of magnetic field of powder |
| JPS59216453A (en) * | 1983-05-20 | 1984-12-06 | Hitachi Metals Ltd | Manufacture of cylindrical permanent magnet |
| JPS60153109A (en) * | 1984-01-21 | 1985-08-12 | Sumitomo Special Metals Co Ltd | Permanent magnet |
| JPS61154118A (en) * | 1984-12-27 | 1986-07-12 | Tdk Corp | Molding method in magnetic field of rare earth magnet and device thereof |
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