JPH033205A - Manufacture of resin coupling type magnet - Google Patents
Manufacture of resin coupling type magnetInfo
- Publication number
- JPH033205A JPH033205A JP1136805A JP13680589A JPH033205A JP H033205 A JPH033205 A JP H033205A JP 1136805 A JP1136805 A JP 1136805A JP 13680589 A JP13680589 A JP 13680589A JP H033205 A JPH033205 A JP H033205A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- powder
- granulation
- temperature
- granulation 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.)
- Pending
Links
- 239000011347 resin Substances 0.000 title claims abstract description 14
- 229920005989 resin Polymers 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 230000008878 coupling Effects 0.000 title 1
- 238000010168 coupling process Methods 0.000 title 1
- 238000005859 coupling reaction Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005469 granulation Methods 0.000 claims abstract description 13
- 230000003179 granulation Effects 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 abstract description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 8
- 239000006247 magnetic powder Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 5
- 229910052786 argon Inorganic materials 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000004898 kneading Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 3
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000010298 pulverizing process Methods 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0558—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 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)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、樹脂結合型磁石の製造方法のうちの造粒工程
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a granulation step in a method for manufacturing a resin-bonded magnet.
［従来の技術］
従来、樹脂結合型磁石、特に圧縮成形型磁石の製造工程
においては、次工程の成形工程で金型中に磁性粉末が給
材・充填されやすいように、たとえば顆粒状などになる
ように押出法や粉砕法で造粒していた。[Prior Art] Conventionally, in the manufacturing process of resin-bonded magnets, especially compression-molded magnets, magnetic powder is formed into granules, etc., so that it can be easily fed and filled into the mold in the next molding process. It was granulated using extrusion or pulverization methods.
［発明が解決しようとする課題］
しかし、室温で上記の方法により造粒したものは、球状
ではなく不定形となるため、金型中に磁性粉末を給材・
充填することが困難であるという課題を有する。[Problem to be solved by the invention] However, the granules granulated by the above method at room temperature are not spherical but have an irregular shape.
The problem is that it is difficult to fill.
本発明は、これらの課題を解決するものであり、その目
的とするところは、成形工程において金型中に給材・充
填しゃすい造粒粉末が作成できる樹脂結合型磁石の製造
方法を提供するところにある。The present invention is intended to solve these problems, and its purpose is to provide a method for manufacturing a resin-bonded magnet that can create granulated powder that can be easily fed and filled into a mold during a molding process. It's there.
［課題を解決するための手段］
本発明の樹脂結合型磁石の製造方法は、そのうちの造粒
工程を、樹脂の軟化温度と硬化温度の間の温度で行なう
ことを特徴とする。[Means for Solving the Problems] The method for manufacturing a resin-bonded magnet of the present invention is characterized in that the granulation step is performed at a temperature between the softening temperature and the curing temperature of the resin.
本発明は、磁性粉末と樹脂との混合・混線の後の造粒工
程を、樹脂の硬化温度と硬化温度の間の温度で行なうこ
とにより、不定形の造粒粉末の表面を軟化させ、突起部
をなだらかにさせることによって、球状に近い形状にす
ることができるのである。The present invention softens the surface of the irregularly shaped granulated powder by performing the granulation process after mixing and cross-fertilization of the magnetic powder and resin at a temperature between the curing temperature of the resin and the hardening temperature of the resin. By making the part gentle, it is possible to create a shape that is close to a spherical shape.
また、超音波などを併用することによって、より効率的
・高精度に球状に丸めることができる。In addition, by using ultrasonic waves in combination, it is possible to roll the ball into a ball more efficiently and with high precision.
当然のことながら、樹脂の硬化温度以上で造粒を行なう
ことは、意味のないことである。Naturally, it is meaningless to perform granulation at a temperature higher than the curing temperature of the resin.
［実施例］
以下、本発明について実施例に基づいて詳細に説明する
。[Examples] Hereinafter, the present invention will be described in detail based on Examples.
（実施例−１）
Ｓ ｍ （Ｃ０，６７２Ｆ ｅ 、２２Ｃｕ、ｅａＺ
ｒ 、１１２Ｂ） ｅ、３ｓの組成を有する合金を、高
周波溶解炉を用いてアルゴンガス雰囲気下で溶解・鋳造
し、１０００〜１２５０°Ｃの最適温度で溶体化処理し
、４００〜９００°Ｃで時効を施した後、１０〜３０μ
ｍに粉砕して、エポキシ樹脂と混合・混練した。(Example-1) S m (C0,672F e , 22Cu, eaZ
r, 112B) e, 3s is melted and cast in an argon gas atmosphere using a high frequency melting furnace, solution treated at an optimum temperature of 1000-1250°C, and then melted at 400-900°C. After aging, 10~30μ
The mixture was ground to a size of 1.5 m and mixed and kneaded with an epoxy resin.
これを押出法で顆粒状の造粒粉末とした。これを比較例
とする。また、４０〜６０°Ｃで振動を加えた円盤上で
丸め、球状の造粒粉末を作成した。This was made into granular powder by extrusion. This is taken as a comparative example. Further, the powder was rolled on a disk vibrated at 40 to 60°C to create a spherical granulated powder.
これを本発明とする。This is the present invention.
これらの造粒粉末を、直径１１ｍｍ、 充填深さ２０
ｍｍの金型中に自然に給材・充填させ、７０ｋｇ／ｍｍ
２の成形圧力で圧縮成形した。These granulated powders were packed with a diameter of 11 mm and a filling depth of 20 mm.
70kg/mm by naturally feeding and filling the material into the mm mold.
Compression molding was performed at a molding pressure of 2.
比較例の重量が５．９ｇ、 成形高さが８．５ｍｍで
あったのに対し、本発明のは８．２ｇ、１１．８ｍｍと
多くの磁性粉末が充填できていることが分かる。ちなみ
に、密度は約７ 、３ ｇ／ｃｍ２と比較例・本発明と
もにほぼ同じ値であり、上記の差が充填のしやすさの差
に依存していることは明らかであり、本発明が有効であ
ることが分かる。It can be seen that the weight of the comparative example was 5.9 g and the molding height was 8.5 mm, while that of the present invention was 8.2 g and 11.8 mm, indicating that a large amount of magnetic powder could be filled. Incidentally, the density is about 7.3 g/cm2, which is almost the same value for both the comparative example and the present invention, and it is clear that the above difference depends on the difference in ease of filling, and the present invention is effective. It turns out that it is.
（実施例−２）
Ｎｄ＋５Ｆｅｓ２．ｔＢａ、３の組成となるように、高
周波溶解炉を用いアルゴンガス雰囲気中で溶解・鋳造し
、得られたインゴットを急冷薄帯製造装置を用い、アル
ゴンガス雰囲気中、直径２０ｍｍ銅製ロールなどの条件
で急冷薄帯を作成し、３００〜８００℃の最適の温度で
熱処理を施した。この急冷薄片を実施例−１と同様の方
法を用いて本発明と比較例の造粒粉末を作成した。(Example-2) Nd+5Fes2. The ingot was melted and cast in an argon gas atmosphere using a high frequency melting furnace so that the composition had a composition of tBa, 3, and the obtained ingot was melted using a quenched ribbon production device in an argon gas atmosphere using a copper roll with a diameter of 20 mm. A quenched ribbon was prepared and heat-treated at an optimal temperature of 300 to 800°C. Granulated powders of the present invention and comparative examples were prepared from the rapidly cooled flakes using the same method as in Example-1.
これらの造粒粉末も、実施例−１と同様に給材・充填の
試験を行なったが、比較例が５．３ｇ、本発明が７．３
ｇ給材することができた。つまり、本発明は、用いる磁
性粉末の種類に依存しないことが分かる。These granulated powders were also subjected to material feeding and filling tests in the same manner as in Example-1.
We were able to supply g materials. In other words, it can be seen that the present invention does not depend on the type of magnetic powder used.
（実施例−３）
実施例−２で得られた熱処理前の急冷薄片を軽く壊し、
型の中に入れて、アルゴン雰囲気中で、７００〜８００
°Ｃの温度で短時間のうちに、２０ｋｇ／ｍｍ２の圧力
で高温圧縮成形を施した。得られた圧密体は、密度がほ
ぼ１００％であった。この圧密体を、再びアルゴン雰囲
気中、７００〜８００°Ｃの温度で、１０ ｋｇ／ｍｍ
２の圧力で最初の圧縮方向と垂直な方向に高温圧縮成形
を施した。(Example-3) The quenched flakes obtained in Example-2 before heat treatment were slightly broken,
Place it in a mold and heat it in an argon atmosphere for 700~800℃.
Hot compression molding was carried out at a temperature of °C for a short time and at a pressure of 20 kg/mm2. The compacted body obtained had a density of approximately 100%. This compacted body was heated again at a temperature of 700 to 800°C in an argon atmosphere at a concentration of 10 kg/mm.
Hot compression molding was performed at a pressure of 2 in a direction perpendicular to the initial compression direction.
（すなわち、ダイアップセットを施した。）得られたバ
ルクの磁石の磁気特性は、
１Ｈｃ＝１４．２ ［ｋＯｅコ
Ｂｒ＝１２．３ ［ｋＧ］
（ＢＨ）ｍａｘ＝３７．９ ［ＭＧＯｅコであった。(In other words, die-up setting was performed.) The magnetic properties of the obtained bulk magnet are as follows: 1Hc=14.2 [kOe Br=12.3 [kG] there were.
このバルクの磁石を粉砕し、ポリイミド系の樹脂と混合
、温間で混練した後粉砕して、それを実施例−１，２′
と同様に球状の造粒粉末とした。ポリイミド系の樹脂は
硬化温度が高いことから分かるように、造粒の温度もエ
ポキシ系に比べると高くなるが、軟化温度と硬化温度の
差が大きく、温度制御は容易である。This bulk magnet was pulverized, mixed with polyimide resin, kneaded warm, and then pulverized.
A spherical granulated powder was prepared in the same manner as above. As can be seen from the fact that polyimide-based resins have a high curing temperature, the granulation temperature is also higher than that of epoxy-based resins, but the difference between softening temperature and curing temperature is large and temperature control is easy.
ここでも、実施例−１，２と同様に、外径１６ｍｍ、
内径１４ｍｍのリング状の金型をもちいて、給材・充
填の試験を行なったが、比較例が２．７ｇに対し、本発
明は３．６ｇ給材することができた。Here, as in Examples 1 and 2, the outer diameter is 16 mm,
A material feeding/filling test was conducted using a ring-shaped mold with an inner diameter of 14 mm, and the present invention was able to feed 3.6 g of material, compared to 2.7 g in the comparative example.
すなわち、本発明は、用いる磁性粉末の種類だけでなく
、樹脂の種類や金型の種類にも依存しないことが分かる
。That is, it can be seen that the present invention does not depend not only on the type of magnetic powder used, but also on the type of resin and the type of mold.
以上、実施例の中で述べてきたように、本発明は、 ・元になる磁石の種類 ・用いる樹脂の種類 ・造粒粉末の作成方法 には、なんら依存しないことは明らかである。As described above in the examples, the present invention ・Type of original magnet ・Type of resin used ・How to make granulated powder It is clear that there is no dependence on
［発明の効果］
以上述べたように、本発明によれば、樹脂結合型磁石の
製造方法のうち造粒工程を、樹脂の軟化温度と硬化温度
の間の温度で行なうことを特徴とすることにより、球状
の造粒粉末が得られるので、次工程の成形の際の金型へ
の給材・充填が容易になることから、小さな充填深さで
背の高い製品を成形できるだけでなく、リング状といっ
た小さな間隙にも容易に充填できるなど、工程の簡略化
。[Effects of the Invention] As described above, according to the present invention, the granulation step in the method for manufacturing a resin-bonded magnet is performed at a temperature between the softening temperature and the curing temperature of the resin. Since spherical granulated powder can be obtained, it is easy to feed and fill the mold in the next molding process, which not only allows molding of tall products with a small filling depth, but also enables molding of rings. Simplify the process by easily filling small gaps such as shapes.
低コスト化の実現といった多大の効果を有するものであ
る。This has many effects such as realizing cost reduction.
以 上that's all
Claims (2)
脂の軟化温度と硬化温度の間の温度で行なうことを特徴
とする樹脂結合型磁石の製造方法。(1) A method for manufacturing a resin-bonded magnet, characterized in that the granulation step is carried out at a temperature between the softening temperature and the curing temperature of the resin.
記載の樹脂結合型磁石の製造方法。(2) Claim 1 in which ultrasonic waves are used in combination in the granulation step.
The method for manufacturing the resin-bonded magnet described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1136805A JPH033205A (en) | 1989-05-30 | 1989-05-30 | Manufacture of resin coupling type magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1136805A JPH033205A (en) | 1989-05-30 | 1989-05-30 | Manufacture of resin coupling type magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033205A true JPH033205A (en) | 1991-01-09 |
Family
ID=15183926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1136805A Pending JPH033205A (en) | 1989-05-30 | 1989-05-30 | Manufacture of resin coupling type magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033205A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416698A (en) * | 1978-07-24 | 1979-02-07 | Seiko Epson Corp | Preparing permanent magnet |
| JPS6324607A (en) * | 1986-07-17 | 1988-02-02 | Mitsubishi Metal Corp | Rare earth bonded magnet |
| JPS63216318A (en) * | 1987-03-05 | 1988-09-08 | Seiko Epson Corp | Manufacture of resin-combined type magnet composed of rare-earth metal and cobalt |
-
1989
- 1989-05-30 JP JP1136805A patent/JPH033205A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5416698A (en) * | 1978-07-24 | 1979-02-07 | Seiko Epson Corp | Preparing permanent magnet |
| JPS6324607A (en) * | 1986-07-17 | 1988-02-02 | Mitsubishi Metal Corp | Rare earth bonded magnet |
| JPS63216318A (en) * | 1987-03-05 | 1988-09-08 | Seiko Epson Corp | Manufacture of resin-combined type magnet composed of rare-earth metal and cobalt |
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