JPS62263947A - Manufacture of magnet - Google Patents
Manufacture of magnetInfo
- Publication number
- JPS62263947A JPS62263947A JP10659186A JP10659186A JPS62263947A JP S62263947 A JPS62263947 A JP S62263947A JP 10659186 A JP10659186 A JP 10659186A JP 10659186 A JP10659186 A JP 10659186A JP S62263947 A JPS62263947 A JP S62263947A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- fine powder
- pulverized
- magnet
- high magnetic
- 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 10
- 239000000843 powder Substances 0.000 claims abstract description 29
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 abstract 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000583 Nd alloy Inorganic materials 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- 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〕 本発明は永久磁石の製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method of manufacturing a permanent magnet.
Ｎｄ−Ｆｅ−Ｂ系合金が永久磁石材料として優れた磁気
特性を有していることは広く知られている。It is widely known that Nd-Fe-B alloys have excellent magnetic properties as permanent magnet materials.
然しながら、モータその他各種の電気機器が小型化され
てきている今日、小型、軽量で強力な磁力を発生し得る
一層優れた永久磁石が要望されている。However, as motors and various other electrical devices are becoming smaller, there is a demand for even better permanent magnets that are smaller, lighter, and capable of generating strong magnetic force.
本発明は叙上の観点に立ってなされたものであり、その
目的とするところは、比較的簡便な手段により、上記Ｎ
ｄ−Ｆｅ−Ｂ磁石の特性、特にそのエネルギ積を向上さ
せ得る磁石製造方法を提供することにある。The present invention has been made based on the above-mentioned viewpoint, and its object is to solve the above-mentioned N by relatively simple means.
It is an object of the present invention to provide a method for manufacturing a d-Fe-B magnet that can improve its characteristics, particularly its energy product.
上記の目的は、Ｎｄ、 Ｆｅ及びＢの微粉末を製造する
工程と、原子％で１０〜２５％のＮｄ微粉末と、３〜２
７％のＢ微粉末と、残部が不純物と添加元素を除き実質
上Ｆｅ微粉末とから成る混合物を溶解、急冷してＮｄ−
Ｆｅ−８合金系、例えば
Ｎｄ （Ｆｆ３（？ＬＢａ、ｏ７−２ｒ） ５〜ｅ、さ
らに具体的には、
Ｎ％ Ｆｅクク１３３ ＝ Ｎｄ （Ｆｅｏ、ｔ
Ｌ”／、’ｔ３’；）、Ｆｒｒの微粉末を得る工程と、
上記微粉末を高磁界内で等方向に加圧して成形体を得る
工程と、上記成形体を好ましくは磁界内で加熱焼結し焼
結体とする工程と、上記焼結体に熱処理を施す工程と、
上記熱処理された焼結体に着磁する工程とから成る磁石
製造方法によって達成される。The above purpose is to produce a fine powder of Nd, Fe and B, a process of producing fine powder of Nd of 10 to 25% by atomic percent, and a process of producing fine powder of Nd, Fe and B.
A mixture consisting of 7% B fine powder and the remainder substantially Fe fine powder excluding impurities and additive elements is melted and rapidly cooled to form Nd-
Fe-8 alloy system, for example Nd (Ff3(?LBa, o7-2r) 5~e, more specifically, N% Fekuku133 = Nd (Feo, t
L”/, 't3';), obtaining a fine powder of Frr;
Pressing the fine powder in the same direction in a high magnetic field to obtain a molded body; heating and sintering the molded body preferably in a magnetic field to obtain a sintered body; and heat-treating the sintered body. process and
This is achieved by a magnet manufacturing method comprising the step of magnetizing the heat-treated sintered body.
上記の如き構成であると、比較的簡単な手段により、高
い磁気特性を有するＮｄＨｙ Ｆｅ７７Ｂ ｇ合金系磁
石が得られるものである。With the above configuration, an NdHy Fe77B g alloy magnet having high magnetic properties can be obtained by relatively simple means.
以下、図面を参照しつ一本発明を具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to the drawings.
第１図は、本発明にかかる磁石製造方法を実施するため
の装置の一例である。FIG. 1 is an example of an apparatus for implementing the magnet manufacturing method according to the present invention.
図中、１は非磁性耐圧材料で作成された耐圧容器、２は
図面では省略された圧縮機構に連結されたパンチ、３は
上記加圧容器ｌの周囲に設けられたコイル、４は上記加
圧容器１内に収容された例えば元素％組成Ｎｄ、ｙ Ｆ
ｅｙ□Ｂｇの微粉末５を真空収納して密封したステンレ
スのカンケース、６は流体又は粉末等の加圧媒体である
。In the figure, 1 is a pressure-resistant container made of a non-magnetic pressure-resistant material, 2 is a punch connected to a compression mechanism that is omitted in the drawing, 3 is a coil provided around the pressure container l, and 4 is a pressure-resistant container made of a pressure-resistant material. For example, the element % composition Nd, y F contained in the pressure vessel 1
A stainless steel can case in which fine powder 5 of ey□Bg is vacuum-sealed and sealed, and 6 is a pressurized medium such as fluid or powder.
而して、常法により製造されるＮｄｌ、 Ｐｅ７□Ｂ８
合金を線爆粉製造法或いは液中放電加工等その他従来慣
用の手段で粒径ｌ〜５０μｍ程度の微粉末とし、Ｎｄ微
粉末と、Ｆｅ微粉末と、Ｂ微粉末とを原子数比で１５
： ７７ ： ８となるように配合して成る混合物を１
５００〜２０００℃で溶解し、急冷してＮｄｔｒ Ｆｅ
７７Ｂ ｇの微粉末５とする。Therefore, Ndl, Pe7□B8 produced by a conventional method
The alloy is made into fine powder with a particle size of about 1 to 50 μm by wire bomb powder production method or other conventional methods such as submerged electric discharge machining, and Nd fine powder, Fe fine powder, and B fine powder are mixed in an atomic ratio of 15.
: 77 : 8 A mixture of 1
Melt at 500-2000℃ and rapidly cool to form NdtrFe
77B g of fine powder 5.
上記Ｎｄ＋ｇ Ｆｅ７ＴＢ８ の微粉末５をステンレス
製のカンケース４中に真空密封したものを耐圧容器ｌ中
の加圧媒体６中に収容し、パンチ２を用いて約３ ｔｏ
ｎ ／−の高圧力で圧縮処理し、上記圧縮処理と同時に
、コイル３に直流電流を通じて１５０Ｋ Ｏｅの高磁界
を発生させ、磁場中に於ける等方圧の圧縮成形を所定密
度となるように行なう。次いで、圧縮成形体を取り出し
、前述の如き従来公知の手段条件で焼結し、焼結体を磁
石化のための熱処理をし、着磁処理を施して所望の永久
、磁石を製造しく４）
た。The fine powder 5 of Nd+g Fe7TB8 vacuum-sealed in a stainless steel can case 4 was placed in a pressurized medium 6 in a pressure-resistant container l, and punched using a punch 2 for about 3 to
At the same time as the above compression treatment, a high magnetic field of 150 K Oe was generated through the coil 3, and compression molding was performed under isotropic pressure in the magnetic field to a predetermined density. Let's do it. Next, the compression molded body is taken out and sintered under conventionally known means and conditions as described above, and the sintered body is heat treated to become a magnet, and magnetized to produce a desired permanent magnet.4) Ta.
本発明にカミる方法により製造した磁石は、従来公知の
永久磁石に比べて磁束密度が約３２〜３８％程度、また
、保磁力が２０〜３０％程度向上した。The magnet manufactured by the method according to the present invention has a magnetic flux density about 32 to 38% higher and a coercive force about 20 to 30% higher than conventionally known permanent magnets.
本発明は叙上の如く構成されるから、本発明によるとき
は、公知のＮｄ、 Ｆｅ及びＢ合金の微粉末を所定の混
合比で混合して溶解、急冷してＮｄ１５ Ｆｅ＋７＋７
８ｇの微粉末を製造し、これを高磁界内で等方向に加圧
して成形体を成形し、この成形体を好ましくは磁界内で
加熱焼結して焼結体とし、更に上記焼結体に熱処理を施
した後着磁するという比較的簡便な手段により、高い磁
気特性を有するＮ％ Ｆ８７７Ｂ８磁石を得ることがで
きる。Since the present invention is constructed as described above, according to the present invention, fine powders of known Nd, Fe, and B alloys are mixed at a predetermined mixing ratio, melted, and rapidly cooled to form Nd15Fe+7+7.
8 g of fine powder is produced, this is pressurized in the same direction in a high magnetic field to form a compact, this compact is preferably heated and sintered in a magnetic field to form a sintered compact, and the above-mentioned sintered compact is further An N% F877B8 magnet with high magnetic properties can be obtained by a relatively simple method of heat-treating and then magnetizing.
なお、本発明の構成は叙上の実施例に限定されるもので
なく、本発明はその目的の範囲内に於て上記の説明から
当業者が容易に想到し得るすべての変更実施例を包摂す
るものである。 □The structure of the present invention is not limited to the embodiments described above, and the present invention encompasses all modified embodiments that can be easily conceived by a person skilled in the art from the above description within the scope of its purpose. It is something to do. □
第１図は、本発明にかかる磁石製造方法を実施するため
の装置の一例である。FIG. 1 is an example of an apparatus for implementing the magnet manufacturing method according to the present invention.
Claims (1)
で１０〜２５％のＮｄ微粉末と、３〜２７％のＢ微粉末
と、残部が不純物と添加元素を除き実質上Ｆｅ微粉末と
から成る混合物を溶解、急冷してＮｄ＿１＿５Ｆｅ＿７
＿７Ｂ＿８合金系の微粉末を得る工程と、上記微粉末を
高磁界内で等方向に加圧して成形体を得る工程と、 上記成形体を好ましくは磁界内で加熱焼結し焼結体とす
る工程と、 上記焼結体に熱処理を施す工程と、 上記熱処理された焼結体に着磁する工程とから成る磁石
製造方法。[Claims] A process for producing fine powders of Nd, Fe, and B, and a process for producing fine powders of Nd, Fe, and B;
A mixture consisting of 10 to 25% Nd fine powder, 3 to 27% B fine powder, and the remainder substantially Fe fine powder excluding impurities and additive elements is melted and rapidly cooled to form Nd_1_5Fe_7.
a step of obtaining a fine powder of the _7B_8 alloy; a step of pressing the fine powder in the same direction in a high magnetic field to obtain a molded body; and heating and sintering the molded body, preferably in a magnetic field, to form a sintered body. A magnet manufacturing method comprising: a step of heat-treating the sintered body; and a step of magnetizing the heat-treated sintered body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10659186A JPS62263947A (en) | 1986-05-12 | 1986-05-12 | Manufacture of magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10659186A JPS62263947A (en) | 1986-05-12 | 1986-05-12 | Manufacture of magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62263947A true JPS62263947A (en) | 1987-11-16 |
Family
ID=14437422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10659186A Pending JPS62263947A (en) | 1986-05-12 | 1986-05-12 | Manufacture of magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62263947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH097871A (en) * | 1995-06-19 | 1997-01-10 | Mando Mach Co Ltd | Permanent magnet preparation |
-
1986
- 1986-05-12 JP JP10659186A patent/JPS62263947A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH097871A (en) * | 1995-06-19 | 1997-01-10 | Mando Mach Co Ltd | Permanent magnet preparation |
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