JPH04280606A - Bonded magnet and manufacture thereof - Google Patents
Bonded magnet and manufacture thereofInfo
- Publication number
- JPH04280606A JPH04280606A JP3103282A JP10328291A JPH04280606A JP H04280606 A JPH04280606 A JP H04280606A JP 3103282 A JP3103282 A JP 3103282A JP 10328291 A JP10328291 A JP 10328291A JP H04280606 A JPH04280606 A JP H04280606A
- Authority
- JP
- Japan
- Prior art keywords
- bonded magnet
- powder
- silicone resin
- mixture
- magnetic powder
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000006247 magnetic powder Substances 0.000 claims abstract description 33
- 229920002050 silicone resin Polymers 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 9
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 8
- 150000003624 transition metals Chemical group 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 238000010298 pulverizing process Methods 0.000 claims abstract description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 5
- 238000010030 laminating Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000013007 heat curing Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011800 void material 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
- H01F1/0578—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 bonded together
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明はボンド磁石に関し，特に
高磁気特性を有するＲ・Ｔ・Ｂ系（但し，ＲはＹを含む
希土類元素，Ｔは遷移金属）異方性ボンド磁石及びその
製造方法に関するものである。[Industrial Application Field] The present invention relates to bonded magnets, and in particular to R/T/B system (where R is a rare earth element containing Y and T is a transition metal) anisotropic bonded magnets having high magnetic properties and their production. It is about the method.
【０００２】0002
【従来の技術】近年，Ｒ，Ｔ，Ｂ（但し，ＲはＹを含む
希土類元素，Ｔは遷移金属），取り分けＮｄ，Ｆｅ，Ｂ
を主成分とする母合金を急冷粉砕して得られる薄帯に熱
間据込み加工処理して得られた成形体を粉砕した粉末が
強い磁気的異方性を示し，高いエネルギー積を有するこ
とが見いだされて以来，その応用製品として，これら粉
末と熱硬化性樹脂との混合物を磁場圧縮成形して得られ
る異方性ボンド磁石が注目されており，先に開発された
急冷薄帯を粉砕して得られる粉末を原料とする等方性ボ
ンド磁石の磁気特性を上まわる磁石として期待が集めら
れている。[Prior art] In recent years, R, T, B (where R is a rare earth element including Y, and T is a transition metal), especially Nd, Fe, and B.
The powder obtained by pulverizing a compact obtained by hot upsetting into a ribbon obtained by rapidly cooling and pulverizing a master alloy whose main component is , exhibits strong magnetic anisotropy and has a high energy product. Since its discovery, anisotropic bonded magnets obtained by magnetic field compression molding of a mixture of these powders and thermosetting resin have attracted attention as applied products. There are high expectations that the magnet will have magnetic properties that exceed those of isotropic bonded magnets made from the powder obtained by this process.
【０００３】0003
【発明が解決しようとする課題】ところで，高磁気特性
を有する異方性圧縮成形ボンド磁石を作製するためには
異方性磁性粉末自体が高い磁気異方性及び大きいエネル
ギー積を有することが必要であることは言うまでもなく
，さらにこの磁性粉末の特性を最大限に発揮するための
圧縮成形も重要となり，特に異方性磁性粉末の充填率及
び配向性を考慮した成形条件の確立が重要となっている
。[Problem to be solved by the invention] By the way, in order to produce an anisotropic compression-molded bonded magnet with high magnetic properties, it is necessary that the anisotropic magnetic powder itself has high magnetic anisotropy and a large energy product. Needless to say, compression molding is also important in order to maximize the characteristics of this magnetic powder, and it is especially important to establish molding conditions that take into account the filling rate and orientation of the anisotropic magnetic powder. ing.
【０００４】ここでＲ・Ｔ・Ｂ系とりわけＮｄ−Ｆｅ−
Ｂ系異方性磁性粉末は急冷薄帯を圧密化後，熱間据込み
加工を施して磁気的異方化しており，粉末に粉砕される
時，据込み方向に垂直方向の積層界面で割れ易く，出来
た粉末は偏平状である。また，圧密化，据込み加工時に
加熱されるため結晶が成長して大きくなっており，得ら
れた粉末の表面は凹凸となっている。[0004] Here, R・T・B system, especially Nd-Fe-
B-based anisotropic magnetic powder is made from a quenched ribbon that is consolidated and then subjected to hot upsetting to make it magnetically anisotropic. When it is crushed into powder, it cracks at the lamination interface perpendicular to the upsetting direction. The resulting powder is flat. In addition, the crystals grow and become larger due to the heating during compaction and upsetting, and the surface of the resulting powder becomes uneven.
【０００５】ところで，Ｎｄ−Ｆｅ−Ｂ系異方性磁性粉
末は，磁場圧縮成形する際，磁場印加することにより，
Ｎｄ−Ｆｅ−Ｂ系異方性粉末は配向するが，圧縮成形時
に空隙を満たすために該磁性粉末が移動する時，これら
磁性粉末が偏平状であり，またその表面が凹凸であるた
め，磁性粉末のすべり性が悪いため，空隙を満たすため
に移動するとき配向を保ったまま移動できず，配向が乱
れ，圧縮成形体において，この磁性粉末の配向が不十分
となり，また移動が困難であるため，充填率が高くする
ことができず，十分な磁気特性が得られていない。By the way, when Nd-Fe-B based anisotropic magnetic powder is compressed in a magnetic field, by applying a magnetic field,
Nd-Fe-B anisotropic powders are oriented, but when the magnetic powders move to fill the voids during compression molding, the magnetic powders are flat and their surfaces are uneven, so the magnetic Due to the poor slipperiness of the powder, when it moves to fill the void, it cannot move while maintaining its orientation, and the orientation is disordered, resulting in insufficient orientation of the magnetic powder in the compression molded product, and movement is difficult. Therefore, the filling rate cannot be increased, and sufficient magnetic properties cannot be obtained.
【０００６】そこで，本発明の技術的課題は，Ｒ・Ｔ・
Ｂ系異方性圧縮成形ボンド磁石の作製において，磁性粉
末の磁気的な配向度，及び充填率を高めることにより，
優れた磁気特性を有するＲ・Ｔ・Ｂ系異方性圧縮成形ボ
ンド磁石及びその製造方法を提供することにある。[0006] Therefore, the technical problem of the present invention is to
In the production of B-based anisotropic compression molded bonded magnets, by increasing the magnetic orientation degree and filling rate of the magnetic powder,
An object of the present invention is to provide an anisotropic compression-molded bonded R.T.B magnet having excellent magnetic properties and a method for manufacturing the same.
【０００７】[0007]
【課題を解決するための手段】本発明者は，Ｒ・Ｔ・Ｂ
系異方性磁性粉末のすべり性を良くすることにより，成
形体における該磁性粉末の配向度，充填率を高くできる
と考え，磁性粉末のすべり性を改善する方法について種
々検討した結果，磁性粉末にシリコーン樹脂粉末を添加
することにより，圧縮成形体における該磁性粉末の配向
度，充填率が高くなり，優れた磁気特性を有するＮｄ−
Ｆｅ−Ｂ系異方性圧縮成形ボンド磁石を作製できること
を見いだし，本発明をなすに至ったのである。[Means for Solving the Problems] The present inventor has discovered that R.T.B.
We believe that by improving the slipperiness of anisotropic magnetic powder, we can increase the degree of orientation and filling rate of the magnetic powder in the compact, and as a result of various studies on ways to improve the slipperiness of magnetic powder, we found that By adding silicone resin powder to the compression molded body, the degree of orientation and filling rate of the magnetic powder in the compression molded body are increased, and Nd-
It was discovered that an Fe-B based anisotropic compression molded bonded magnet could be produced, and the present invention was completed.
【０００８】本発明によれば，１０重量％以下のシリコ
ーン樹脂粉末とＲ・Ｔ・Ｂ系（但し，ＲはＹを含む希土
類元素，Ｔは遷移金属）異方性磁性粉末との混合物を熱
硬化性樹脂で固着してなることを特徴とするホンド磁石
が得られる。According to the present invention, a mixture of silicone resin powder of 10% by weight or less and anisotropic magnetic powder of R・T・B system (where R is a rare earth element including Y, and T is a transition metal) is heated. A Hondo magnet is obtained, which is characterized by being fixed with a curable resin.
【０００９】本発明によれば，前記Ｒ・Ｔ・Ｂ系異方性
磁性粉末はＲ・Ｔ・Ｂ系液体急冷薄片積層体の粉砕粉末
からなることを特徴とするボンド磁石が得られる。According to the present invention, there is obtained a bonded magnet characterized in that the R.T.B system anisotropic magnetic powder is a pulverized powder of an R.T.B system liquid quenched flake laminate.
【００１０】本発明によれば，前記シリコーン樹脂粉末
は，１０μｍ以下の平均粒径を有することを特徴とする
ボンド磁石が得られる。According to the present invention, a bonded magnet is obtained in which the silicone resin powder has an average particle size of 10 μm or less.
【００１１】本発明によれば，Ｒ・Ｔ・Ｂ系（但し，Ｒ
はＹを含む希土類元素，Ｔは遷移金属）異方性磁性粉末
とシリコーン樹脂粉末との混合物に，熱硬化性樹脂を混
合して磁場中成形し，加熱硬化することを特徴とするボ
ンド磁石の製造方法が得られる。According to the present invention, R・T・B system (However, R
is a rare earth element containing Y, and T is a transition metal) A bonded magnet characterized in that a thermosetting resin is mixed with a mixture of anisotropic magnetic powder and silicone resin powder, molded in a magnetic field, and heated and hardened. A manufacturing method is obtained.
【００１２】本発明によれば，前記シリコーン樹脂粉末
は，前記混合物中に１０重量％以下で含有されているこ
とを特徴とするボンド磁石の製造方法が得られる。According to the present invention, there is obtained a method for producing a bonded magnet, characterized in that the silicone resin powder is contained in the mixture in an amount of 10% by weight or less.
【００１３】本発明によれば，前記シリコーン樹脂粉末
は，平均粒径が１０μｍ以下であることを特徴とするボ
ンド磁石の製造方法が得られる。According to the present invention, there is obtained a method for manufacturing a bonded magnet, characterized in that the silicone resin powder has an average particle size of 10 μm or less.
【００１４】本発明によれば，前記異方性磁性粉末は，
Ｒ・Ｔ・Ｂ系液体急冷薄片を積層し，熱間据込み加工後
，粉砕することによって形成されていることを特徴とす
るボンド磁石の製造方法が得られる。According to the present invention, the anisotropic magnetic powder comprises:
A method for manufacturing a bonded magnet is obtained, which is characterized in that the bonded magnet is formed by laminating R, T, and B liquid quenched flakes, hot upsetting, and then pulverizing them.
【００１５】ここで，本発明におけるシリコーン樹脂粉
末の添加量は０〜１０重量％（０は含まず）であり，更
に望ましくは１〜４重量％である。というのは，シリコ
ーン樹脂粉末の添加量が１０重量％以上になると，シリ
コーン樹脂粉末の相対的な存在量が多くなり，該磁性粉
末が密に充填されなくなり，充填率が低下し，十分な磁
気特性が得られないためである。また，本発明における
シリコーン樹脂粉末の平均粒径は１０μｍ以下であり，
更に望ましくは５μｍ以下である。その限定理由は，シ
リコーン樹脂粉末の平均粒径が１０μｍ以上になると該
磁性粉末が密に充填されなくなり，充填率が低下し，十
分な磁気特性が得られないからである。[0015] Here, the amount of silicone resin powder added in the present invention is 0 to 10% by weight (excluding 0), more preferably 1 to 4% by weight. This is because when the amount of silicone resin powder added exceeds 10% by weight, the relative amount of silicone resin powder increases, the magnetic powder is no longer densely packed, the filling rate decreases, and sufficient magnetic This is because the characteristics cannot be obtained. Further, the average particle size of the silicone resin powder in the present invention is 10 μm or less,
More preferably, the thickness is 5 μm or less. The reason for this limitation is that if the average particle size of the silicone resin powder is 10 μm or more, the magnetic powder will not be packed densely, the packing rate will decrease, and sufficient magnetic properties will not be obtained.
【００１６】尚，次に述べる本発明の実施例においては
，Ｒ・Ｔ・Ｂ系磁性粉末としてＮｄ−Ｆｅ−Ｂ系異方性
磁性粉末を用いたボンド磁石を示したが，たとえばＲと
してＮｄをＤｙ，Ｐｒ等の希土類元素を用いる場合，Ｔ
としてのＦｅをＣｏと置換する場合，その他各種添加物
を加えた合金系においても本発明を実施する上で何ら問
題とならないことは言うまでもない。In the following embodiments of the present invention, a bonded magnet using Nd-Fe-B anisotropic magnetic powder as the R.T.B magnetic powder is shown, but for example, as R, Nd When using rare earth elements such as Dy and Pr, T
It goes without saying that when Co is substituted for Fe, there is no problem in carrying out the present invention even in alloy systems in which various other additives are added.
【００１７】[0017]
【実施例】次に実施例により本発明を更に詳細に説明す
る。EXAMPLES Next, the present invention will be explained in more detail with reference to Examples.
【００１８】（実施例１）高周波誘導溶解法により，組
成（重量％）がＦｅ：６５．８， Ｎｄ：２９．８，
Ｃｏ：２．６５， Ｐｒ：０．８， Ｂ：０．
９５に調整した母合金をＡｒ雰囲気に置換可能な単ロー
ル装置を用いて液体急冷薄帯を作製後，これら薄帯の積
層体に熱間据込み加工により磁気的異方性処理を施し，
引き続き５００μｍ以下の粒径まで粉砕し，異方性磁性
粉末を得，本発明を実施するための出発原料とした。こ
の磁性粉末原料と平均粒径１μｍのシリコーン樹脂粉末
とを重量比で，１００：０， ９９．５：０．５，
９９．０：１．０， ９８．０：２．０，９６．０
：４．０， ９３．０：７．０， ９０．０：１０
．０， ８７．０：１３．０の８種の割合で混合し，
次にこれらの各混合物とエポキシ樹脂とを重量比で９７
：３の割合でそれぞれ混合し，これらの各混合物を金型
内に挿填し，１６００ｋＡ／ｍの磁場を印加し，４ｔ／
ｃｍ２ の圧力で圧縮成形し，直径１０ｍｍ，高さ１０
ｍｍの円柱状の成形体を作製し，加熱硬化してボンド磁
石とした。得られたボンド磁石の磁気特性の結果を図１
に示す。図１から明らかなようにシリコーン樹脂粉末添
加量０〜１０重量％（０を含まず）で磁気特性が向上す
る。(Example 1) The composition (weight %) of Fe: 65.8, Nd: 29.8,
Co:2.65, Pr:0.8, B:0.
After producing liquid-quenched ribbons using a single-roll device that can replace the master alloy adjusted to a temperature of
Subsequently, the powder was crushed to a particle size of 500 μm or less to obtain anisotropic magnetic powder, which was used as a starting material for carrying out the present invention. The weight ratio of this magnetic powder raw material and silicone resin powder with an average particle size of 1 μm was 100:0, 99.5:0.5,
99.0:1.0, 98.0:2.0, 96.0
:4.0, 93.0:7.0, 90.0:10
．． 0, 87.0:13.0 ratios were mixed,
Next, each of these mixtures and the epoxy resin were mixed in a weight ratio of 97.
: 3, each mixture was inserted into a mold, a magnetic field of 1600 kA/m was applied, and the mixture was mixed at a ratio of 4 t/3.
Compression molded at a pressure of cm2, diameter 10mm, height 10mm
A cylindrical molded body with a diameter of 1 mm was produced and cured by heating to obtain a bonded magnet. Figure 1 shows the results of the magnetic properties of the obtained bonded magnet.
Shown below. As is clear from FIG. 1, the magnetic properties are improved when the amount of silicone resin powder added is 0 to 10% by weight (excluding 0).
【００１９】（実施例２）実施例１と同様にして得たＮ
ｄ−Ｆｅ−Ｂ系異方性磁性粉末と平均粒径がそれぞれ０
．２μｍ， ０．５μｍ， １μｍ， ３μｍ，
５μｍ， ７μｍ，１０μｍ， １３μｍの８種の
シリコーン樹脂とを重量比で９８：２の割合でそれぞれ
混合し，次にこれらの各混合物とエポキシ樹脂を重量比
で９７：３の割合でそれぞれ混合し，実施例１と同様に
して成形してボンド磁石を得た。これらのボンド磁石の
磁気特性の結果を図２に示す。図２から明らかなように
，シリコーン樹脂粉末の平均粒径が１０μｍ以下の時に
磁気特性が向上する。(Example 2) N obtained in the same manner as in Example 1
d-Fe-B anisotropic magnetic powder and average particle size of 0
．． 2μm, 0.5μm, 1μm, 3μm,
Eight types of silicone resins of 5 μm, 7 μm, 10 μm, and 13 μm were mixed at a weight ratio of 98:2, and then each of these mixtures and an epoxy resin were mixed at a weight ratio of 97:3. A bonded magnet was obtained by molding in the same manner as in Example 1. The results of the magnetic properties of these bonded magnets are shown in FIG. As is clear from FIG. 2, the magnetic properties are improved when the average particle size of the silicone resin powder is 10 μm or less.
【００２０】[0020]
【発明の効果】以上の説明から明らかなように，本発明
によれば，磁性粉末の配向度が高く，かつ充填率が高い
ので，優れた磁気特性を有するボンド磁石の製造が可能
となり，工業上きわめて有益である。[Effects of the Invention] As is clear from the above explanation, according to the present invention, since the degree of orientation of the magnetic powder is high and the filling rate is high, it is possible to manufacture bonded magnets with excellent magnetic properties, and it is possible to manufacture bonded magnets with excellent magnetic properties. It is extremely beneficial.
【図１】本発明の実施例１に係るボンド磁石のシリコー
ン樹脂粉末の添加量と磁気特性との関係を示す図である
。FIG. 1 is a diagram showing the relationship between the amount of silicone resin powder added and magnetic properties of a bonded magnet according to Example 1 of the present invention.
【図２】本発明の実施例２に係るホンド磁石のシリコー
ン樹脂粉末の添加量と磁気特性との関係を示す図である
。FIG. 2 is a diagram showing the relationship between the amount of silicone resin powder added and magnetic properties of the Hondo magnet according to Example 2 of the present invention.
Claims (7)
とＲ・Ｔ・Ｂ系（但し，ＲはＹを含む希土類元素，Ｔは
遷移金属）異方性磁性粉末との混合物を熱硬化性樹脂で
固着してなることを特徴とするホンド磁石。[Claim 1] A mixture of 10% by weight or less of silicone resin powder and anisotropic magnetic powder of R・T・B system (where R is a rare earth element including Y, and T is a transition metal) is made into a thermosetting resin. Hondo magnets are characterized by their ability to stick together.
Ｒ・Ｔ・Ｂ系異方性磁性粉末はＲ・Ｔ・Ｂ系液体急冷薄
片の粉砕粉末からなることを特徴とするボンド磁石。2. The bonded magnet according to claim 1, wherein the R.T.B system anisotropic magnetic powder is composed of a pulverized powder of R.T.B system liquid quenched flakes.
シリコーン樹脂粉末は，１０μｍ以下の平均粒径を有す
ることを特徴とするボンド磁石。3. The bonded magnet according to claim 1, wherein the silicone resin powder has an average particle size of 10 μm or less.
土類元素，Ｔは遷移金属）異方性磁性粉末とシリコーン
樹脂との混合物に，熱硬化性樹脂を混合して磁場中成形
し，加熱硬化することを特徴とするボンド磁石の製造方
法。[Claim 4] Thermosetting resin is mixed into a mixture of R・T・B system (where R is a rare earth element including Y, and T is a transition metal) anisotropic magnetic powder and silicone resin, and the mixture is placed in a magnetic field. A method for manufacturing a bonded magnet, which is characterized by molding and heat curing.
いて，前記シリコーン樹脂粉末は，前記混合物中に１０
重量％以下で含有されていることを特徴とするボンド磁
石の製造方法。5. The method for manufacturing a bonded magnet according to claim 4, wherein the silicone resin powder is contained in the mixture in an amount of 10%.
A method for manufacturing a bonded magnet, characterized in that the content is less than % by weight.
いて，前記シリコーン樹脂粉末は，平均粒径が１０μｍ
以下であることを特徴とするボンド磁石の製造方法。6. In the method for manufacturing a bonded magnet according to claim 4, the silicone resin powder has an average particle size of 10 μm.
A method for manufacturing a bonded magnet, characterized by the following.
いて，前記異方性磁性粉末は，Ｒ・Ｔ・Ｂ系液体急冷薄
片を積層し，熱間据込み加工後，粉砕して形成されてい
ることを特徴とするボンド磁石の製造方法。7. In the method for manufacturing a bonded magnet according to claim 4, the anisotropic magnetic powder is formed by laminating R, T, and B liquid quenched flakes, hot upsetting, and then pulverizing them. A method for manufacturing a bonded magnet, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3103282A JPH04280606A (en) | 1991-03-08 | 1991-03-08 | Bonded magnet and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3103282A JPH04280606A (en) | 1991-03-08 | 1991-03-08 | Bonded magnet and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04280606A true JPH04280606A (en) | 1992-10-06 |
Family
ID=14349978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3103282A Withdrawn JPH04280606A (en) | 1991-03-08 | 1991-03-08 | Bonded magnet and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04280606A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007019419A (en) * | 2005-07-11 | 2007-01-25 | Neomax Co Ltd | Method for manufacturing rare earth bond magnet |
-
1991
- 1991-03-08 JP JP3103282A patent/JPH04280606A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007019419A (en) * | 2005-07-11 | 2007-01-25 | Neomax Co Ltd | Method for manufacturing rare earth bond magnet |
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