JPS62263613A - Manufacture of dust core - Google Patents
Manufacture of dust coreInfo
- Publication number
- JPS62263613A JPS62263613A JP10734286A JP10734286A JPS62263613A JP S62263613 A JPS62263613 A JP S62263613A JP 10734286 A JP10734286 A JP 10734286A JP 10734286 A JP10734286 A JP 10734286A JP S62263613 A JPS62263613 A JP S62263613A
- Authority
- JP
- Japan
- Prior art keywords
- particles
- temperature
- crystallization temperature
- amorphous
- core
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000002425 crystallisation Methods 0.000 claims abstract description 13
- 230000008025 crystallization Effects 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 2
- 230000004907 flux Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15358—Making agglomerates therefrom, e.g. by pressing
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はダストコアの製造方法に係る。[Detailed description of the invention] (Industrial application field) The present invention relates to a method of manufacturing a dust core.
（従来技術）
インダクタンス素子を構成するコアとしては古くから硅
素鋼や・千−マロイ、フェライトなどの磁性体が使用さ
れておシ近年すボン状アモルファスを巻回したコアも提
案されている。さらに、粉末公の了モルフースｒ祐掃ａ
ＩＭ冬氾λ１−笛船曲竪またアモルファスダストコアも
新しいダストコア、−して研究が進められている。(Prior Art) Magnetic materials such as silicon steel, 1,000-malloy, and ferrite have been used as cores constituting inductance elements for a long time, and in recent years, cores made of carbon-shaped amorphous material have been proposed. In addition, the powder public's Ryomorphus
IM Winter Flood λ1 - Amorphous Dust Core is also being researched as a new dust core.
（発明が解決しようとする問題点）
このようなダストコアは個々の磁性体粒子の反磁場の影
響でコアとして見かけ上の透磁率は低下するが透磁率の
周波数特性が優れ、かつ飽和磁束密度の高いコアが得ら
れる。しかしながら、用途ニ応じた種々の材料を得るた
めに、現在の技術では素材の化学構成、粉末粒径、プレ
ス圧力、熱処理温度などを管理、制御する必要があシ、
各工程の製造条件が複雑になる欠点がある。(Problem to be solved by the invention) Although the apparent magnetic permeability of the core decreases due to the influence of the demagnetizing field of the individual magnetic particles, such a dust core has excellent frequency characteristics of magnetic permeability and a low saturation magnetic flux density. You can get a high core. However, in order to obtain various materials for different uses, current technology requires management and control of the chemical composition of the material, powder particle size, pressing pressure, heat treatment temperature, etc.
This has the disadvantage that the manufacturing conditions for each step are complicated.
本発明はこの点に鑑み磁性粉末の結晶化温度の相違を利
用し粉末混合と熱処理温度のみでコアの磁気特性を制御
する方法に関するものである。In view of this point, the present invention relates to a method of controlling the magnetic properties of a core using only the powder mixing and heat treatment temperatures by utilizing the difference in crystallization temperature of magnetic powders.
（問題点を解決す°るための手段）
本発明が提案する磁気特性の製造方法はアモルファスの
結晶化温度が異なる粒子を混合し結晶化温度の低い方の
粒子を一部結晶化するよう熱処理温度を制御する方法で
ある、
（実施例）
第１図に結晶化温度がそれぞれＴＩ＋７２なるアモルフ
ァス粒子１，２がバインダー３と共に圧力成形されてい
る状態を顕微鏡の視野で見たところを示した。それぞれ
の結晶化温度にＴＩ＜Ｔ２なる関係があり、圧力成形後
θなる温度（但しここでＴ１≦θ＜Ｔ２とする）で熱処
理する。(Means for solving the problem) The method for manufacturing magnetic properties proposed by the present invention is to mix amorphous particles with different crystallization temperatures and heat-treat the particles with lower crystallization temperatures to partially crystallize. A method of controlling temperature (Example) Fig. 1 shows a state in which amorphous particles 1 and 2, each having a crystallization temperature of TI+72, are pressure-formed together with a binder 3, as seen through a microscope. Each crystallization temperature has a relationship of TI<T2, and after pressure forming, heat treatment is performed at a temperature of θ (here, T1≦θ<T2).
（発明の効果）
Ｔｌの結晶化温度をもつ粒子の一部若しくは全体が結晶
化し１通常の結晶金属となり、コア全体の透磁率が低周
波域側で増大し、高周波域側で減少する傾向となる。ま
た表面抵抗や直流ヒステリシス特性も変化し、その可変
幅（ダイナミックレンジ）は単一のアモルファス粒子を
熱処理した場合に比較して大きくすることが出来る。第
２図にこの特性を示すもので単一粒子を通常の方法で熱
処理したものと２本発明に基づく複合体を本発明に基づ
く方法で熱処理した場合の複素透磁率μ′。(Effect of the invention) Part or all of the particles having a crystallization temperature of Tl crystallize to become a normal crystalline metal, and the magnetic permeability of the entire core tends to increase in the low frequency range and decrease in the high frequency range. Become. The surface resistance and DC hysteresis characteristics also change, and the variable width (dynamic range) can be made larger than when a single amorphous particle is heat-treated. Figure 2 shows this characteristic, and shows the complex magnetic permeability μ' of a single particle heat-treated by a conventional method and a composite according to the present invention heat-treated by a method according to the present invention.
μ“の周波数特性の変化を示した０通常のこのような変
化は、単一粒子のみの製造条件下で制御することは困難
であわ、用途に応じたコアを実現する上で極めて有用で
あろうNormally, such changes are difficult to control under the manufacturing conditions of only a single particle, and are extremely useful in realizing cores tailored to specific applications. wax
第１図はアモルファス粒子の複合圧力成形体の拡大図、
第２図は本発明による複素透磁率の周波数特性を示す。
図において。Figure 1 is an enlarged view of a composite pressure-molded body of amorphous particles.
FIG. 2 shows the frequency characteristics of complex magnetic permeability according to the present invention. In fig.
Claims (1)
ァス粉末を混合し、結晶温度の低い方の粒子を一部結晶
化するよう熱処理をすることを特徴とするダストコアの
製造方法。1. A method for producing a dust core, which comprises mixing two or more amorphous powders having different crystallization temperature characteristics and heat-treating the powder to partially crystallize the particles with lower crystallization temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10734286A JPS62263613A (en) | 1986-05-09 | 1986-05-09 | Manufacture of dust core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10734286A JPS62263613A (en) | 1986-05-09 | 1986-05-09 | Manufacture of dust core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62263613A true JPS62263613A (en) | 1987-11-16 |
| JPH0528885B2 JPH0528885B2 (en) | 1993-04-27 |
Family
ID=14456618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10734286A Granted JPS62263613A (en) | 1986-05-09 | 1986-05-09 | Manufacture of dust core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62263613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014075528A (en) * | 2012-10-05 | 2014-04-24 | Nec Tokin Corp | Soft magnetic alloy powder, powder-compact magnetic core arranged by use thereof, and manufacturing method thereof |
-
1986
- 1986-05-09 JP JP10734286A patent/JPS62263613A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014075528A (en) * | 2012-10-05 | 2014-04-24 | Nec Tokin Corp | Soft magnetic alloy powder, powder-compact magnetic core arranged by use thereof, and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0528885B2 (en) | 1993-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |