JPS62274046A - Manufacture of magnet - Google Patents
Manufacture of magnetInfo
- Publication number
- JPS62274046A JPS62274046A JP11477286A JP11477286A JPS62274046A JP S62274046 A JPS62274046 A JP S62274046A JP 11477286 A JP11477286 A JP 11477286A JP 11477286 A JP11477286 A JP 11477286A JP S62274046 A JPS62274046 A JP S62274046A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- sintered compact
- alloy
- pulverized powder
- 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 description 10
- 239000000843 powder Substances 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000005415 magnetization Effects 0.000 abstract 1
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000521 B alloy Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005011 phenolic resin 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】 ３、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] 3. Detailed description of the invention [Industrial application field] The present invention relates to a method of manufacturing a permanent magnet.
Ｎｄ２ Ｆｅ１４Ｂ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 Nd2Fe14B alloy has excellent magnetic properties as a permanent magnet material.
然しなから、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
ｄ２ Ｆｅ１４Ｂ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.
The object of the present invention is to provide a method for manufacturing a d2 Fe14B magnet that can improve its characteristics, particularly its energy product.
上記の目的は、Ｎｄ２ Ｆｅ１４Ｂ合金の微粉末（以下
「Ａ粉末」と言う。）を製造する工程と、Ｎｄ’１５
Ｆｅ５、Ｎｄ１５Ｆｅ＋７７８Ｂ 、Ｎｄ２ Ｆｅ２
Ｂ６ ％ Ｎｄ２ Ｆｅ７Ｂ６がら成る群から選んだ少
なくとも一種の合金の微粉末（以下「Ｂ粉末」と言う。The above purpose is a process of manufacturing fine powder of Nd2Fe14B alloy (hereinafter referred to as "A powder"), and
Fe5, Nd15Fe+778B, Nd2 Fe2
A fine powder of at least one alloy selected from the group consisting of B6% Nd2Fe7B6 (hereinafter referred to as "B powder").
）を製造する工程と、上記Ａ粉末に、重量比で２〜６％
の範囲でＢ粉末を配合し、混合粉末を得る工程と、上記
混合物を磁界内で通電焼結し焼結体を得る工程と、上記
焼結体に熱処理を施す工程と、上記熱処理を施した焼結
体に着磁する工程とから成り、さらに必要に応じて焼結
体に樹脂を浸透させる工程を有する磁石製造方法によっ
て達成される。) and adding 2 to 6% by weight to the above A powder.
A step of blending B powder in the range of 1 to 2 to obtain a mixed powder, a step of sintering the above mixture with electricity in a magnetic field to obtain a sintered body, a step of subjecting the sintered body to heat treatment, and a step of performing the above heat treatment. This is achieved by a magnet manufacturing method comprising a step of magnetizing a sintered body, and further a step of infiltrating a resin into the sintered body, if necessary.
上記の如き構成であると、公知のＮｄ２ Ｆｅ＋＋Ｂ合
金の微粉末と、これも公知のＮｄ９５Ｆｅ５ 、Ｎｄ１
５Ｆｅ７７ＢＢ 、Ｎｄ２ Ｆｅ２ Ｂ１６ 、Ｎｄ２
Ｆｅ７ Ｂ６から成る群から選んだ少なくとも一種の
合金の微粉末を混合し、この混合粉末を磁場中で通電焼
結、更には熱処理、そして必要に応じて樹脂強化すると
いう比較的簡便な手段により、公知のＮｄ２ Ｆｅ１＋
Ｂ合金の特性を向上させ得るものである。With the above configuration, fine powder of a known Nd2 Fe++B alloy, Nd95Fe5, Nd1
5Fe77BB, Nd2 Fe2 B16, Nd2
By a relatively simple means of mixing fine powder of at least one alloy selected from the group consisting of Fe7 B6, sintering this mixed powder with electric current in a magnetic field, further heat treating, and reinforcing it with resin if necessary, Known Nd2 Fe1+
This can improve the properties of alloy B.
以下、実施例により本発明を具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to Examples.
常法により製造されるＮｄ２ Ｆｅｌ午Ｂ合金を粉砕や
、例えば線爆粉Ａ造法（例えば、特公昭５２−９．６１
５号公報等）或いは液中放電加工等で粒径１〜５０μｍ
程度の微粉末（「Ａ粉末遣と言う、）とし、また、
Ｎｄ９ｓ Ｆｅ５ 、 Ｎｄ１ｙ ＦｅＩ？７Ｂ
Ｂ 、 Ｎｄ２ Ｆｅ２ ＢＩＧ 、
Ｎｄ２Ｆｅ７Ｂｇ合金のそれぞれを、同様に粉砕や
線爆粉製造法或いは液中放電加工等で粒径１〜５０μｍ
程度の微粉末（「Ｂ粉末」と言う。）とした。Nd2 Fel B alloy produced by a conventional method can be pulverized or, for example, wire bomb powder A manufacturing method (for example, Japanese Patent Publication No. 52-9.61
No. 5, etc.) or by liquid electrical discharge machining etc., the particle size is 1 to 50 μm.
as a fine powder (referred to as "A powder powder"), and
Nd9s Fe5, Nd1y FeI? 7B
B, Nd2Fe2BIG,
Each of the Nd2Fe7Bg alloys was similarly crushed to a particle size of 1 to 50 μm using the wire bomb production method or submerged electrical discharge machining.
It was made into a fine powder (referred to as "B powder").
上記入粉末に対し上記各Ｂ粉末をそれぞれ下記表−１に
従い配合し、アルゴンガス中で５０ ｋＯｅ。Each of the above B powders was blended with the above powder according to Table 1 below, and the mixture was heated to 50 kOe in argon gas.
０．５Ｈｚ程度のパルス磁界を加えつ＼焼結し、更にこ
れに熱処理を施した後、フェノール樹脂等の樹脂を浸透
させて引張強度１８ｋｇ／ ｍｍ２程度の磁石材とし、
これを常法により着磁して所望の永久磁石を製造した。It is sintered while applying a pulsed magnetic field of about 0.5 Hz, and then heat treated, and then infiltrated with resin such as phenol resin to make a magnet material with a tensile strength of about 18 kg/mm2.
This was magnetized by a conventional method to produce a desired permanent magnet.
表−１にその焼結条件、熱処理条件並びに得られた永久
磁石の最大エネルギ積を示す。Table 1 shows the sintering conditions, heat treatment conditions, and maximum energy product of the obtained permanent magnet.
この表−１から、本発明にか＼る方法により製造した磁
石は、従来公知のＮｄ２ Ｆｅ１４Ｂ磁石に比べてその
最大エネルギ積が大幅に向上していることが判る。From Table 1, it can be seen that the maximum energy product of the magnet manufactured by the method according to the present invention is significantly improved compared to the conventionally known Nd2Fe14B magnet.
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Ｎｄ２ ＦｅＩＬＦＢ合金の微粉末と、これ
も公知のＮｄｃＨｓ Ｆｅ５ 、Ｎｄｌ５ ＦｅＴ７Ｂ
ａ 、Ｎｄ２Ｆｅ７Ｂｅｇ 、 Ｎｄ２Ｆｅ７Ｂｅか
ら成る群から選んだ少なくとも一種の合金の微粉末を混
合し、この混合粉末を磁場中で通電焼結、更には熱処理
、樹脂強化するという比較的簡便な手段により、公知の
Ｎｄ２ Ｆｅ１４Ｂ合金の特性を向上させ得るものであ
る。Since the present invention is constructed as described above, according to the present invention, fine powder of a known Nd2 FeILFB alloy and also known NdcHs Fe5, Ndl5 FeT7B are used.
By a relatively simple method of mixing fine powder of at least one type of alloy selected from the group consisting of a, Nd2Fe7Beg, and Nd2Fe7Be, and sintering this mixed powder with electric current in a magnetic field, and further heat-treating and reinforcing it with resin, This can improve the properties of Nd2Fe14B alloy.
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.
Claims (1)
末」と言う。）を製造する工程と、 Ｎｄ＿９＿５Ｆｅ＿５、Ｎｄ＿１＿５Ｆｅ＿７＿７Ｂ＿
８、Ｎｄ＿２Ｆｅ＿２Ｂ＿１＿６、Ｎｄ＿２Ｆｅ＿７Ｂ
＿６から成る群から選んだ少なくとも一種の合金の微粉
末（以下「Ｂ粉末」と言う。）を製造する工程と、 上記Ａ粉末に、重量比で２〜６％の範囲でＢ粉末を配合
し、混合粉末を得る工程と、 上記混合物を磁界内で通電焼結し焼結体を得る工程と、 上記焼結体に熱処理を施す工程と、 上記熱処理を施した焼結体に着磁する工程とから成る磁
石製造方法。[Claims] 1) A process for producing fine powder of Nd_2Fe_1_4B alloy (hereinafter referred to as "A powder"), and Nd_9_5Fe_5, Nd_1_5Fe_7_7B_
8, Nd_2Fe_2B_1_6, Nd_2Fe_7B
A process of manufacturing a fine powder of at least one alloy selected from the group consisting of , a step of obtaining a mixed powder, a step of electrically sintering the above mixture in a magnetic field to obtain a sintered compact, a step of heat-treating the above-mentioned sintered compact, and a step of magnetizing the heat-treated sintered compact. A magnet manufacturing method comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11477286A JPS62274046A (en) | 1986-05-21 | 1986-05-21 | Manufacture of magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11477286A JPS62274046A (en) | 1986-05-21 | 1986-05-21 | Manufacture of magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62274046A true JPS62274046A (en) | 1987-11-28 |
Family
ID=14646303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11477286A Pending JPS62274046A (en) | 1986-05-21 | 1986-05-21 | Manufacture of magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62274046A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990876A (en) * | 1989-09-15 | 1991-02-05 | Eastman Kodak Company | Magnetic brush, inner core therefor, and method for making such core |
| JPH0963878A (en) * | 1995-08-22 | 1997-03-07 | Isuzu Motors Ltd | Production of rare earth based permanent magnet |
-
1986
- 1986-05-21 JP JP11477286A patent/JPS62274046A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990876A (en) * | 1989-09-15 | 1991-02-05 | Eastman Kodak Company | Magnetic brush, inner core therefor, and method for making such core |
| JPH0963878A (en) * | 1995-08-22 | 1997-03-07 | Isuzu Motors Ltd | Production of rare earth based permanent magnet |
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