JPS58125801A - Manufacture of resin combined type permanent magnet - Google Patents
Manufacture of resin combined type permanent magnetInfo
- Publication number
- JPS58125801A JPS58125801A JP57008686A JP868682A JPS58125801A JP S58125801 A JPS58125801 A JP S58125801A JP 57008686 A JP57008686 A JP 57008686A JP 868682 A JP868682 A JP 868682A JP S58125801 A JPS58125801 A JP S58125801A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- magnetic field
- magnet
- resin
- 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
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
Abstract
Description
【発明の詳細な説明】
本発明は、高１向を有する異方性樹脂結合型磁石の製造
法Ｋ１１ｌｌするものである。ζらに、詳しく述べると
、熱硬化性樹脂と磁石粉との混合物を磁場中でプレス成
形し異方性を付与させた後、磁場中で成形体中の４１４
脂を硬化（キュアーリング）させ、粉末の配向性を高く
保たせるものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing an anisotropic resin-bonded magnet having a high direction. To explain in detail, a mixture of thermosetting resin and magnet powder is press-molded in a magnetic field to impart anisotropy, and then the 414 in the molded body is formed in a magnetic field.
This cures the fat and maintains the high orientation of the powder.
従東、熱硬化性ＩＩＩＩｗｔＩを用いて異方性樹脂結合
型磁石を製造するのけ第１図のよへな方法で行なわれて
いる。すなわち、磁石粉と樹ＷｆＩは混合きれ友後、磁
場中でプレスｈｋ形し、成形物はプレス型から取抄出さ
れ、所望の温度でオープン中あるいけ恒龜槽中で樹脂硬
化（キエアーりング）させて磁石にする。キュアーリン
グ中、樹脂の椿端な粘廖低下のため、磁石粉末の回転環
が起り、粉末の配向性がかな抄乱れる現象が起り、磁石
の磁気物性は劣什してしまう。At present, an anisotropic resin-bonded magnet is manufactured using thermosetting IIIwtI using a method as shown in FIG. That is, after the magnet powder and wood WfI are mixed, they are pressed into a magnetic field, the molded product is taken out of the press mold, and the resin is cured in an open and constant-fog tank at a desired temperature. ) and turn it into a magnet. During curing, the viscosity of the resin decreases, causing a rotating ring of the magnet powder, causing a phenomenon in which the orientation of the powder is slightly disturbed, and the magnetic properties of the magnet deteriorate.
本発明は、磁場中でキュアーリングすることによりかか
る欠点を改善したものである。本発明に用いる磁性粉と
しては、ハード７エライト磁石粉、希土類コバルト磁石
粉が普通である。また、両者を適当な割合に混合すると
とＫより、性能とコス）ＫＮ合った樹脂結合型磁石を作
製することができる。The present invention improves this drawback by performing curing in a magnetic field. The magnetic powder used in the present invention is usually hard 7 elite magnet powder or rare earth cobalt magnet powder. Furthermore, if both are mixed in an appropriate ratio, a resin-bonded magnet with better performance and cost (KN) can be produced.
加えて、本発明は高性能な樹脂結合型磁石を作製するり
老でたいへん有効な製造方法である。し磁石を作製する
のに＃ｉ、希土類（Ｒで示す）コバルト（ＣＯ）磁石粉
を用いるのがよい。さちＫＲ−Ｃ。In addition, the present invention is a very effective manufacturing method for producing high-performance resin-bonded magnets. #i, rare earth (indicated by R) cobalt (CO) magnet powder is preferably used to produce the magnet. Sachi KR-C.
磁石粉の中では、ＲＣｏ、型よりＲ，Ｃｏ、７ＩＩＩを
用いるのが高性能化のためＫは望ましい、Ｒとしては、
サマリウムＣ８ｍ）、セリウム（Ｃｅ）、プラセオジム
（Ｒｒ）そしてミツシュメタル（ＭＭで示す）がＪｌ独
あるいけ複合して使用きれる。Ｒ，Ｃｏ、型けＦｔＯｏ
、ａｉｌよ抄飽和磁化４π１θが高いうえ、Ｃｏｆ鉄と
置換することによりさらに４π工θを向上させることか
で−る。Among magnetic powders, RCo, R, Co, and 7III are preferable for high performance, so K is preferable, and R is,
Samarium (C8m), cerium (Ce), praseodymium (Rr) and Mitsushmetal (indicated by MM) can be used in combination. R, Co, type FtOo
, ail has a high saturation magnetization 4π1θ, and by replacing it with Cof iron, the 4π workθ can be further improved.
この合金系は、銅を加えると保磁力か得られζらに、微
着の添加物Ｍ（Ｍ：チタン、ジルコニウム。In this alloy system, coercive force is obtained by adding copper, and in addition, finely deposited additives M (M: titanium, zirconium) are added.
ハフニウム、ニオブ、バナジウム、タンタル）により、
鉄の量を高めてもあるいけ非磁性の鋼の含４Ｓ１を低下
ζせても充分大−なｅＳ力が得られることが分り、４π
■８を向上はせても保磁力が以下しない高性能な磁石な
らびに磁石粉を製造で肴る。Hafnium, niobium, vanadium, tantalum)
It was found that a sufficiently large eS force can be obtained even if the amount of iron is increased or the 4S1 content of non-magnetic steel is decreased.
■We manufacture high-performance magnets and magnetic powder that do not reduce coercive force even if the magnetic field is improved.
とりわけ、Ｂとして８ｍを用いたものが性能か高い。In particular, the one using 8m as B has high performance.
８ｍ （Ｏｏ Ｃｕ Ｆｅ Ｍ ）Ｚけ、２が６５から
９までのものが、性能的によく、合金相としてけＰｍ、
ＴＭ、、（ＴＭＦｉＣｏ等の遷移金楓を示す）型結晶が
主体の組成１域である。ｚ＜６５であると、ａｍ、ＴＭ
、、型結晶構造が少なくなり、４π■６か低下するので
過当ではなく、また、Ｚ）？であると、Ｆｅ −Ｃｏ軟
磁性相か山頂し、これは磁気、性能を著しく低化させる
ので不適当である。8m (Oo Cu Fe M ) Z, those with 2 from 65 to 9 have good performance, and as an alloy phase Pm,
TM, (indicating transition gold maple such as TMFiCo) type crystal is the main component in composition range 1. If z<65, am, TM
,, the type crystal structure decreases and the value of 4π■6 decreases, so it is not unreasonable, and also Z)? If this is the case, the Fe--Co soft magnetic phase will form a peak, which is unsuitable because it will significantly reduce the magnetic performance.
さらに、ＳｌＬＩ（Ｃ０１−ｕ−ｖ−ＷＣｕｕＦｅｖＭ
ｗ）２として遷移金属内の組成比について言及すると、
以下のようＫなる。まずＱｕｉｔ保磁力を得る喪めに不
可欠な元素で参るか、非磁性物のため４π工８は低める
。Furthermore, SlLI(C01-uv-WCuuFevM
w) Referring to the composition ratio within the transition metal as 2,
K is as follows. First of all, it is an essential element for obtaining the Quit coercive force, or it is a non-magnetic material, so the 4π force 8 is lowered.
従って、０．［Ｔ１＜：ｕ＜０２が遣ｉｌ″ｔ″ある。Therefore, 0. [T1<:u<02 is used.
Ｆｅけ高飽和磁化にするために加えられる元素であり、
高４π工８什のためＫけ、■〉０２が望ましい。Ｖカ・
０５を越えると、殆んど保磁力か得られなくなるので、
Ｆｅの量ｔｆ Ｏ，２（ｖ＜０．５ かよいことになる
。本合金の磁性は、Ｍの１に著しく敏感で、Ｗ値か高い
と保磁力は得られやすいが、４π工８がたいへん低下し
てしまい、Ｖ＠が舒いと保磁力が得られＫ＜くなるので
、保磁力と飽和磁化のかねあいから０００１≦Ｗ≦α０
５が適当である。Fe is an element added to make it highly saturated magnetized,
Since the height is 4π, 02 is desirable. Vka・
If it exceeds 05, almost no coercive force can be obtained, so
The amount of Fe tf O,2 (v < 0.5 means that the magnetism of this alloy is extremely sensitive to 1 of M, and it is easy to obtain a coercive force when the W value is high, but the 4π work 8 is very sensitive. When V@ increases, coercive force is obtained and K<, so 0001≦W≦α0 due to the balance between coercive force and saturation magnetization.
5 is appropriate.
以下実施例に従い本発明を１明してゆく。The present invention will be explained below with reference to Examples.
実施例１
第２図は、本発明の磁場中成形ならびに磁場中硬化を行
うための装曾の生簀部分の断面図である。Example 1 FIG. 2 is a cross-sectional view of the cage portion of a cage for performing molding in a magnetic field and hardening in a magnetic field according to the present invention.
１は電磁石、２Ｆ１ポールピース、３はプレスダイであ
り、ＪＦｉ上パンチ、５Ｆｉ下パンチである。３と４と
５でプレス金型を形成している。４と５はともに可動で
ある。６Ｆｉ固形の絶縁および断熱剤でする。７ Ｖｉ
ａｌｌ？を硬化させるための熱源ヒータである。８けガ
ラスウール、石Ｍ郷の断熱剤で、９け磁石粉と樹脂との
混合物である。1 is an electromagnet, 2F1 pole piece, 3 is a press die, JFi upper punch, and 5Fi lower punch. 3, 4, and 5 form a press mold. Both 4 and 5 are movable. 6Fi solid insulation and heat insulation material. 7 Vi
All? This is a heat source heater for curing. It is a heat insulating agent made of 8-grade glass wool and Ishi Mgo, and is a mixture of 9-grade magnetic powder and resin.
次に本発明のｆＰｊを用いた異方性樹脂結合型磁石の製
造方法について説明し、製造された磁石が従来の本のと
どれ位性能に差があるか比較して入る−まず、第１１１
！に示す磁性粉を適量のエポキシ樹脂と榛械的に混合し
た。ｓＩ＃の粘麿け１５００ｃｐｓのものを使用した。Next, we will explain the method for manufacturing an anisotropic resin-bonded magnet using fPj of the present invention, and compare the performance of the manufactured magnet with that of conventional magnets.
! The magnetic powder shown in Figure 1 was mechanically mixed with an appropriate amount of epoxy resin. sI# with a viscosity of 1500 cps was used.
混合物は肩１に対しては４ｇ４２．３に対しては８ｇず
つ秤量きれ、それぞれ第２１１１１のプレスダイ３の中
ＫＶ填される。The mixture was weighed out in amounts of 4 g for shoulder 1 and 8 g for shoulder 42.3, and loaded into the press die 3 of No. 21111, respectively.
第１表 その後は、第３図で示された工程にそって進められる。Table 1 After that, the process proceeds along the steps shown in FIG.
まずプレスダイ中の下バンチと上パンチの間隙に入れた
粉は、充分広い空隙中で磁場配向させられる（工程■）
。次に磁場中で、上パンチと下バンプ双方から圧力をか
けてプレス液形する（工程■）。成形後上パンチで成形
物をヒータ部までもってゆき磁場中で硬化させる（工程
の）。First, the powder placed in the gap between the lower bunch and the upper punch in the press die is oriented by a magnetic field in a sufficiently wide gap (Step ■)
. Next, in a magnetic field, pressure is applied from both the upper punch and the lower bump to form a press liquid (step ①). After molding, the molded product is carried to the heater section using the upper punch and hardened in a magnetic field (in the process).
磁場は、Ｖ向から硬化終了まで継続して印加してシ〈。The magnetic field is continuously applied from the V direction until the end of curing.
硬化發、磁場牽切り磁石を取り−出す（工程■）、磁場
中硬化の際、パンチに圧力をかけておけば、圧力低下に
伴う成形品の膨張がなくなり、より密賓の高い磁石かで
−る。If you apply pressure to the punch during curing, taking out the magnetic field tension magnet (step ■), and curing in the magnetic field, the molded product will not expand due to pressure drop, and the magnet will be more suitable for attracting guests. -ru.
一方従来法と比較するため、磁場中加圧成形まで全く工
程を芦１−にして、成形物をオープン中で無磁場で樹脂
硬化行ったとｔの磁石の性能を本発明の４のと眉１〜３
まで比較して入た、結果を第２表に示す。On the other hand, in order to compare with the conventional method, we changed the entire process up to pressure molding in a magnetic field and cured the resin in an open environment without a magnetic field. ~3
The results are shown in Table 2.
第２表に示すように、本発明による磁石は従来法による
ものより、Ｂｒで約１０憾、 （ＢＨ）ｍａｗでも１
０〜２０１１１変全ての材料で上昇していることが分る
。As shown in Table 2, the magnet according to the present invention has a lower Br of about 10% and a (BH)max of 10% lower than that of the conventional method.
It can be seen that the value has increased for all materials ranging from 0 to 20111.
実施例２
バリウムフェライトとサマリウムコバルトの磁石粉末を
岬重量混ぜてボールミル中で混合しえ、バリリム７エラ
イト粉末は１μの平均粒径を有しサマリリムコバルト粉
末は平均粒径１０μの広い粒１分布をもつ、サマリウム
コバルト磁粉末の組成は、８ｍ（Ｃｏ Ｏｕｏ、ｏ＠Ｆ
ｅｏ、５４Ｚｒｏ、ｏ＋ｓ ）ａ、ｏである＠バリウム
フェライトにけ３０ ＶＯＩ、ｆｉ 、サマリウムコバ
ルトＫｔ１１２ＶＯＬ１ｍのエポキシ樹脂を加えて従来
法で成形し走時のＢ−Ｈ減磁曲線を第４図に示す。図中
１はバリウムフェライト磁石を２はサマリウムコバルト
磁石を表す。ボールミル中よ抄取り出され九両粉末の混
合物は、１７ＶＯＬｔｓのエポキシ樹脂で混練された後
、実施例１で説明した本発明法に従って磁石にされた。Example 2 Barium ferrite and samarium cobalt magnetic powders can be mixed in a ball mill by weight mixing, with the barium 7 erite powder having an average particle size of 1μ and the samarium cobalt powder having a wide particle distribution with an average particle size of 10μ. The composition of the samarium cobalt magnetic powder is 8m (Co Ouo, o@F
eo, 54Zro, o+s) a, o@barium ferrite, 30 VOI, fi, samarium cobalt Kt112VOL1m epoxy resin was added and molded using the conventional method, and the B-H demagnetization curve during running is shown in Figure 4. . In the figure, 1 represents a barium ferrite magnet, and 2 represents a samarium cobalt magnet. The mixture of Kuryo powder taken out of the ball mill was kneaded with 17 VOLts of epoxy resin and then made into a magnet according to the method of the present invention as explained in Example 1.
結果のＢ−Ｈ減磁曲線を第４図中５に示した。 （ＢＨ
）＋ｎａｘで８．３ＭＧＯｅが得られた。この磁石は原
料コストは、８ｍＯｏｇ型樹脂結合すマリラムコバルト
磁石に較べ、半分であるに４かかわらず性能Ｆｉ替らな
い、従って広〈産業界の程々の分野で使用されることが
簡待できる。The resulting B-H demagnetization curve is shown in 5 in FIG. (BH
)+nax yielded 8.3 MGOe. Although the raw material cost of this magnet is half that of the 8 mOog type resin-bonded Marilum cobalt magnet, the performance Fi is the same even though it is 4. Therefore, it can be easily used in a wide range of industrial fields. .
第１１Ｉｌｌけ、樹脂結合型磁石の製造法の工Ｓ図。
第２！ｇ１は、本発明の方法に使用する装置。
１・・電磁石 ２・・ポールピース５・・プレス
ダイ ４・・上ノ（ンテ５・・下バンチ ６・・
絶縁物
７・・ヒーター ８・・断熱剤
９・・磁石粉と樹脂との混合物
第３図は、本発明法による磁場中成形後、磁場中硬化の
工薯図兼説明図。
第４図は、各種磁石の雛磁曲紳。
１・・従来法によるバリウムフェライト磁石２・・従来
法によるサマリウムコノ（ルト磁石３・・本発明法によ
る〕（リウムフエライトとサマリウムコバルトの混合粉
による磁石
以 上
出願人 株式会社 舞訪精工會
÷
ｔａ＜−中全清５１
番
１州ｌｌ［砕４シ）
魯乙悄 謀懺シを声ｌ］Ｆ−馬胤帰才ん史
イｂ μ゛１伯し１傳１
■ の ＯＯ
第３図
１−１（ｋｏｅ） 第４図No. 11 is a schematic drawing of a method for manufacturing a resin-bonded magnet. Second! g1 is an apparatus used in the method of the present invention. 1. Electromagnet 2. Pole piece 5. Press die 4. Upper no. 5. Lower bunch 6.
Insulator 7...Heater 8...Insulator 9...Mixture of magnet powder and resin Figure 3 is a factory diagram and explanatory diagram of curing in a magnetic field after molding in a magnetic field according to the method of the present invention. Figure 4 shows the various types of magnets. 1. Barium ferrite magnet by conventional method 2. Samarium Kono magnet by conventional method (ruto magnet 3. By the method of the present invention) (Magnet made of mixed powder of lithium ferrite and samarium cobalt) Applicant: Maiwa Seiko Co., Ltd. ÷ ta<-Zhong Quan Qing 51 No. 1 state ll [break 4 shi] Lu Yiyang's plot] F-Matane's return to history ib μ゛1 countshi 1 den 1 ■'s OO Figure 3 1-1 (koe) Figure 4
Claims (3)
レス成形して異方性を付与させ、該成形品中の樹脂を酸
化させるのＫｍ磁場中行うことを特徴とする樹脂結合型
磁石の製造方法。(1) A resin-bonded type characterized in that a mixture of thermosetting resin and magnet powder is press-molded in a magnetic field to impart anisotropy, and the resin in the molded product is oxidized in a Km magnetic field. How to manufacture magnets.
ハードフェライト磁石粉末の一方、あるいは両方を使用
することを特徴とする特許請求の範囲第１ＸＪ記載の＃
ＩＷｆＩ結合瀞永久磁石の製造方法。(2) # as set forth in claim 1
A method for manufacturing an IWfI bonded permanent magnet.
で示す）とコバルトを主体とした遷移金属（ＴＭで示す
）の比が１対４５から１対９までの、％ＴＭ＋？型結晶
構造主体の磁性粉末を使用することを特徴とする特許請
求の範囲ｗ４２項Ｐ載の樹脂結合型永久磁石の製造方法
。(3) As rare earth cobalt magnet powder, rare earth (R
%TM + A method for manufacturing a resin-bonded permanent magnet according to claim W42, which uses magnetic powder mainly having a type crystal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57008686A JPS58125801A (en) | 1982-01-22 | 1982-01-22 | Manufacture of resin combined type permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57008686A JPS58125801A (en) | 1982-01-22 | 1982-01-22 | Manufacture of resin combined type permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58125801A true JPS58125801A (en) | 1983-07-27 |
Family
ID=11699798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57008686A Pending JPS58125801A (en) | 1982-01-22 | 1982-01-22 | Manufacture of resin combined type permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125801A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0318252A2 (en) * | 1987-11-27 | 1989-05-31 | Imperial Chemical Industries Plc | Process for the production of a bonded magnet |
| JPH09199363A (en) * | 1996-01-22 | 1997-07-31 | Aichi Steel Works Ltd | Method for manufacturing magnetic anisotropic resin coupled magnet and magnetic anisotropic resin coupled magnet |
-
1982
- 1982-01-22 JP JP57008686A patent/JPS58125801A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0318252A2 (en) * | 1987-11-27 | 1989-05-31 | Imperial Chemical Industries Plc | Process for the production of a bonded magnet |
| JPH09199363A (en) * | 1996-01-22 | 1997-07-31 | Aichi Steel Works Ltd | Method for manufacturing magnetic anisotropic resin coupled magnet and magnetic anisotropic resin coupled magnet |
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