JPS6046523B2 - How to make plastic magnets - Google Patents
How to make plastic magnetsInfo
- Publication number
- JPS6046523B2 JPS6046523B2 JP55099523A JP9952380A JPS6046523B2 JP S6046523 B2 JPS6046523 B2 JP S6046523B2 JP 55099523 A JP55099523 A JP 55099523A JP 9952380 A JP9952380 A JP 9952380A JP S6046523 B2 JPS6046523 B2 JP S6046523B2
- Authority
- JP
- Japan
- Prior art keywords
- plastic
- magnets
- fine powder
- magnet
- binder
- 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.)
- Expired
Links
- 239000004033 plastic Substances 0.000 title claims description 20
- 239000000843 powder Substances 0.000 claims description 21
- 238000010298 pulverizing process Methods 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229920006332 epoxy adhesive Polymers 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims 3
- 229920000647 polyepoxide Polymers 0.000 claims 3
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 238000004898 kneading Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/083—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 in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Description
【発明の詳細な説明】 本発明は、プラスチック磁石の製造方法に関する。[Detailed description of the invention] The present invention relates to a method of manufacturing a plastic magnet.
本発明の目的は、プラスチック磁石の製造工程を簡略化
することにある。An object of the present invention is to simplify the manufacturing process of plastic magnets.
本発明の他の目的は、プラスチック磁石の磁気性能向上
てある。Another object of the invention is to improve the magnetic performance of plastic magnets.
本発明のさらに他の目的は、プラスチック磁石の強度向
上てある。Still another object of the present invention is to improve the strength of plastic magnets.
従来のプラスチック磁石の製造工程は、第１図に示すご
とく、微粉砕を行なつた後、プラスチックバインダーを
混入し、成形していた。In the conventional manufacturing process for plastic magnets, as shown in FIG. 1, after pulverization, a plastic binder is mixed in and molded.
そのため（バインダー）混練という工程が必要であり、
工数がかかると共に、微粉末中に後からバイングーを混
入させるため、完全かつ均一に微粉末表面をコーテイグ
することができず、第３図に示すように、成形した場合
に微粉末１どうしがバインダー 。３によつて完全には
固着されないので、磁石内部に巣４が発生して機械的強
度を低下させてしまうという欠点を有していた。Therefore, a process called (binder) kneading is necessary.
In addition to requiring a lot of man-hours, the surface of the fine powder cannot be coated completely and uniformly because the bangu is mixed into the fine powder afterward. . Since the magnet is not completely fixed by the magnets 3 and 3, it has the disadvantage that cavities 4 are generated inside the magnet, reducing the mechanical strength.
又、湿式微粉砕の場合、Ｎｏガス等、不活性ガス中にて
、自然、あるいは、強制乾燥が必要であり、乾式微粉砕
の場合も、不活性ガス中で行なす）れ、保管も、不活性
ガス中で行なわれているが、微粉末の酸化対策は、完全
でなく、第２図に示すとおり、微粉末１の外周に酸化膜
２ができ、磁気性能を低下させてしまうといつた欠点を
有していた。In addition, in the case of wet pulverization, natural or forced drying is required in an inert gas such as No gas, and in the case of dry pulverization, it is also carried out in an inert gas) and storage. Although the process is carried out in an inert gas, the countermeasures against oxidation of the fine powder are not perfect, and as shown in Figure 2, an oxide film 2 is formed on the outer periphery of the fine powder 1, which deteriorates the magnetic performance. It had some drawbacks.
本発明は、かかる欠点を除去したものてある。The present invention eliminates these drawbacks.
本発明の製造工程を第４図に示す。本発明は、第５図に
示すように、磁性原料の粗粉５の中に、ブラスチツクバ
インダー３を入れ、微粉砕と同時に、プラスチックバイ
ンダー３を、微粉末１の外周に、コーティングしてしま
うため、乾燥後のプラスチックバインダーの混練作業が
廃止できる。The manufacturing process of the present invention is shown in FIG. In the present invention, as shown in FIG. 5, a plastic binder 3 is placed in a coarse powder 5 of magnetic raw material, and the outer periphery of the fine powder 1 is coated with the plastic binder 3 at the same time as it is pulverized. This eliminates the need to mix the plastic binder after drying.
又、微粉砕上りで、すでに、プラスチックバインダーが
微粉末の外周にコーティングされているため、乾燥や保
管時の酸化はなく、磁石性能を低下させることはない。
又、プラスチックバインダーの中で、微粉砕が進行する
ため、必らず微粉末の外周に、完全かつ、均一にパイン
ダーがコーティングされ、成形上りで、微粉上りで、微
粉末は、バイングーにより完全に固着されることになり
、磁石強度は向上する。以下、実施例にて説明する。Furthermore, since the plastic binder is already coated on the outer periphery of the fine powder after it has been pulverized, there is no oxidation during drying or storage, and the magnetic performance does not deteriorate.
In addition, since fine pulverization progresses in the plastic binder, the outer periphery of the fine powder is coated completely and uniformly with the binder, and the fine powder is completely coated with the binder after molding. This will improve the strength of the magnet. Examples will be described below.
実施例 １
第６図は、ＳｍｃＯ５系プラスチック磁石の製造におけ
る微粉砕・混練加工法である。Example 1 FIG. 6 shows a pulverization and kneading method for manufacturing SmcO5 plastic magnets.
ＳｍｃＯ５の粗粉６を、５ｅ用ボールミルポット７に２
ｋｇ入れ、エポキシ系接着剤を有機溶剤のキシレンで１
〜３％に希釈させた溶液８を３ｅ１メディアとして、φ
１０ＴＷＬのアルミナボール９を１００個人れて、ボー
ルミル回転速度２０ｒ′Ｐｍで８時間回転させた。Place 6 pieces of coarse powder of SmcO5 into 2 pieces of ball mill pot 7 for 5e.
1 kg of epoxy adhesive with xylene, an organic solvent.
Solution 8 diluted to ~3% was used as 3e1 media, and φ
One hundred alumina balls 9 of 10 TWL were placed and rotated at a ball mill rotation speed of 20 r'Pm for 8 hours.
その後、メディアと、微粉末十溶液を第７図にようにフ
ルイ１０で分散させ、次に、微粉末＋溶液を加熱乾燥さ
せ、蒸発性の高いキシレンを分離させて、エポキシ系接
着剤のコーティングされたＳｍｃＯ５微粉末を得た。こ
の微粉末を成形した結果、混練に要した時間４時間／２
ｋ９を省略でき、磁気性能は１０％、磁石完成強度は、
抗析力で５％向上することができた。After that, the media and the fine powder solution are dispersed using a sieve 10 as shown in Figure 7, and then the fine powder + solution is heated and dried to separate the highly evaporative xylene, and coated with epoxy adhesive. A fine SmcO5 powder was obtained. As a result of molding this fine powder, the time required for kneading was 4 hours/2
K9 can be omitted, the magnetic performance is 10%, and the completed magnet strength is
We were able to improve the anti-deposition strength by 5%.
実施例２
第８図は、ＳｍｃＯ５系プラスチック磁石のライカイ機
による微粉砕・混練同時処理である。Example 2 FIG. 8 shows the simultaneous pulverization and kneading treatment of a SmcO5 plastic magnet using a Raikai machine.
３０ｋ９のＳｍｃＯ５粗粉６に、事前にエポキシ系接５
着剤１１を、重量比５〜１０％混入しておき、３００′
用ライカイ機１２に入れて２０１１寺間かけた。30k9 SmcO5 coarse powder 6 is coated with epoxy system 5 in advance.
Adhesive 11 was mixed in at a weight ratio of 5 to 10%, and 300'
I put it in my Laikai machine 12 and took it to Terama in 2011.
本実施例では、エポキシ系接着剤１１のみであり、希釈
用の溶剤は入れてない。従つて、微粉砕・混練後、即、
成形が可能となつた。この結果、実施例１に比べ、微粉
砕後の乾燥や、溶液との分離作業もなく工程は、より簡
略化され、実施例１と同水準（２ｋｇ／回）て比較し、
一２時間の加工時間の低減ができた。In this embodiment, only the epoxy adhesive 11 is used, and no diluting solvent is used. Therefore, immediately after fine pulverization and kneading,
Molding became possible. As a result, compared to Example 1, the process was simplified without drying after pulverization or separation from the solution, and compared with Example 1 at the same level (2 kg/time),
The processing time was reduced by 12 hours.
又、磁気性能、磁石強度の向上が計られたことは、言う
までもない。以上の実施例のごとく、本発明はプラスチ
ック磁石製造方法の簡略化てあり、かつ、磁気性能・磁
石強度の向上である。It goes without saying that magnetic performance and magnet strength have also been improved. As shown in the above embodiments, the present invention simplifies the method of manufacturing a plastic magnet, and improves magnetic performance and magnet strength.
又、さらに、微粉砕・混練後、そのまま成形、もしくは
、粉末造粒・射出成形への移行ができることは言うまで
もない。本発明は、ＳｍｃＯ５系磁石以外、バリウム−
フェライト磁石や、現在注目を受けている超高性能磁石
であるＳｍ２ｃＯｌ７系磁石といつた磁性粉末成形によ
る磁石製造においては、全て応用できるものである。Furthermore, it goes without saying that after pulverization and kneading, it can be molded as is, or it can be transferred to powder granulation and injection molding. The present invention uses barium-based magnets other than SmcO5-based magnets.
It can be applied to all types of magnet manufacturing by magnetic powder molding, such as ferrite magnets and Sm2cOl7-based magnets, which are currently attracting attention as ultra-high-performance magnets.
第１図は、従来のプラスチック磁石の製造工程。
第２図は、微粉末の酸化。第３図は、従来のプラスチッ
ク磁石ほ巣。第４図は、本発明によるプラスチック磁石
の製造工程。第５図は、本発明による微粉砕・混練の説
明図、第６図は、本発明によるボールミル方式。第７図
は、メディアとの分離。第８図は、本発明によるライカ
イ機方式。１・・・・・・微粉末、２・・・・・・酸化
膜、３・・・・・・プラスチックバインダー、４・・・
・・・巣、５・・・・・・粗粉、６・・・ＳｍｃＯ５粗
粉、７・・・・・希釈溶剤、９・・・・・・アルミナホ
ール、１０・・・・・・フルイ、１１・・・・・・エポ
キシ系接着剤、１２・・・・ライカイ機。Figure 1 shows the conventional manufacturing process for plastic magnets. Figure 2 shows the oxidation of fine powder. Figure 3 shows a conventional plastic magnet hoist. FIG. 4 shows the manufacturing process of a plastic magnet according to the present invention. FIG. 5 is an explanatory diagram of fine pulverization and kneading according to the present invention, and FIG. 6 is a ball mill method according to the present invention. Figure 7 shows separation from the media. FIG. 8 shows the Raikai machine system according to the present invention. 1... Fine powder, 2... Oxide film, 3... Plastic binder, 4...
... nest, 5 ... coarse powder, 6 ... SmcO5 coarse powder, 7 ... dilution solvent, 9 ... alumina hole, 10 ... sieve , 11...Epoxy adhesive, 12...Raikai machine.
Claims (1)
ポキシ樹脂を有機溶剤で希釈した溶液中で微粉砕すると
共に、微粉砕された前記磁性原料の微粉末表面を前記エ
ポキシ樹脂でコーテイグし、その後前記コーティングさ
れたエポキシ樹脂をバインダーとして成形し、さらに着
磁することを特徴とするプラスチック磁石の製造方法。1 After coarsely pulverizing the magnetic raw material, pulverizing it in a solution prepared by diluting an epoxy adhesive or epoxy resin with an organic solvent, coating the surface of the fine powder of the pulverized magnetic raw material with the epoxy resin, and then applying the coating. A method for manufacturing a plastic magnet, which comprises molding the epoxy resin as a binder and further magnetizing it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55099523A JPS6046523B2 (en) | 1980-07-21 | 1980-07-21 | How to make plastic magnets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55099523A JPS6046523B2 (en) | 1980-07-21 | 1980-07-21 | How to make plastic magnets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5724504A JPS5724504A (en) | 1982-02-09 |
| JPS6046523B2 true JPS6046523B2 (en) | 1985-10-16 |
Family
ID=14249587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55099523A Expired JPS6046523B2 (en) | 1980-07-21 | 1980-07-21 | How to make plastic magnets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6046523B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135118U (en) * | 1986-02-19 | 1987-08-25 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0793207B2 (en) * | 1993-06-28 | 1995-10-09 | セイコーエプソン株式会社 | Resin-bonded permanent magnet |
-
1980
- 1980-07-21 JP JP55099523A patent/JPS6046523B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135118U (en) * | 1986-02-19 | 1987-08-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5724504A (en) | 1982-02-09 |
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