JPS62213107A - Manufacture of magnetic core - Google Patents
Manufacture of magnetic coreInfo
- Publication number
- JPS62213107A JPS62213107A JP5486186A JP5486186A JPS62213107A JP S62213107 A JPS62213107 A JP S62213107A JP 5486186 A JP5486186 A JP 5486186A JP 5486186 A JP5486186 A JP 5486186A JP S62213107 A JPS62213107 A JP S62213107A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- cooling
- magnetic
- heat treatment
- cooling process
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 9
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000011282 treatment Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000008646 thermal stress Effects 0.000 abstract description 2
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 239000000956 alloy Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は磁心の製造方法に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to a method for manufacturing a magnetic core.
（発明の技術的背景とその問題点）
コバルト（ＣＯ）系非晶質合金薄帯を用いた磁性部品、
例えば可飽和リアクトルコア等は保磁力（Ｈａ ）が小
さく、角型比（Ｂｒ／Ｂ＋、Ｂ「：残留磁束密度、Ｂ１
：１エルステツドの磁場における磁束密度）等の磁気
特性が良好であり、ビステリシス損失が小さいことが要
望される。この要望に対応する方法として、例えば特願
昭５７−２２７２１９号明細書で示される巻磁心の製造
方法がある。この方法は、非晶質合金材料を巻磁心に成
形した慢歪取り熱処理を施し、次いで磁気特性調整工程
として交流磁場中で８０〜２５０℃の熱処理工程を具備
するものである。この場合、ＣＯ系非晶質合金薄帯につ
いては磁気特性調整工程の前段階に急冷工程を設けるも
のである。(Technical background of the invention and its problems) A magnetic component using a cobalt (CO)-based amorphous alloy ribbon;
For example, saturable reactor cores have a small coercive force (Ha), and the squareness ratio (Br/B+, B': residual magnetic flux density, B1
It is desired that the magnetic properties are good, such as magnetic flux density in a magnetic field of 1 oersted, and that the bisteresis loss is small. As a method to meet this demand, for example, there is a method for manufacturing a wound core disclosed in Japanese Patent Application No. 57-227219. This method involves forming an amorphous alloy material into a wound magnetic core, subjecting it to heat treatment to remove chronic strain, and then heat treatment at 80 to 250° C. in an alternating current magnetic field as a magnetic property adjustment step. In this case, for the CO-based amorphous alloy ribbon, a quenching process is provided before the magnetic property adjustment process.
しかし、この方法は磁心を歪取り熱処理後急冷し、その
後あらためて磁場中熱処理を行うという２段階熱処理で
あるため、処理工程が多く、１個当りの処理数が少なく
量産的ではなかった。However, this method involves a two-step heat treatment in which the magnetic core is heat-treated to remove strain, then rapidly cooled, and then heat-treated in a magnetic field again, so there are many treatment steps and the number of treatments per piece is small, making it impractical for mass production.
さらに、高温の歪取り熱処理からの急冷（水冷）の際、
薄帯はＲ激な熱収縮を起こしてしまい、磁心の外周部と
内周面の熱収縮の差により変形等の歪が発生し、磁気特
性の劣化を生じる場合があった。Furthermore, during rapid cooling (water cooling) after high-temperature strain relief heat treatment,
The thin ribbon undergoes severe thermal contraction, and the difference in thermal contraction between the outer circumferential portion and the inner circumferential surface of the magnetic core may cause distortion such as deformation, resulting in deterioration of magnetic properties.
本発明は、量産的で磁気特性の良好な磁心の製造方法を
提供することを目的とする。An object of the present invention is to provide a method for manufacturing a magnetic core that can be mass-produced and has good magnetic properties.
本発明は、コバルト（ＣＯ）系非晶質合金薄帯よりなる
磁心を熱処理し、その後の冷部工程においてキューリー
点以下でｉ！ＪＡ中冷却を行うことにより磁心を得るも
のである。１ｉ心の熱処理は、キューリー点以上結晶化
温度以下で行うのが好ましく、冷却工程における冷却速
度は５℃／ｌ１ｌｉｎ以下が好ましい。In the present invention, a magnetic core made of a cobalt (CO)-based amorphous alloy ribbon is heat-treated, and in the subsequent cold section process, i! A magnetic core is obtained by cooling during JA. The heat treatment of the 1i core is preferably carried out at a temperature above the Curie point and below the crystallization temperature, and the cooling rate in the cooling step is preferably below 5°C/l1lin.
本発明は、熱処理後の冷却工程の一部において磁場をか
けながら冷却を行うため、従来の熱処理後冷却、さらに
！ｉ場中熱処理という２段の処理工程に比べ少ない工程
で処理が行え、磁心にかかる熱応力が少なくなる。さら
に、冷却工程を徐冷で行うため、磁心の急激な熱収縮は
発生せず、歪に敏感な非晶質合金に対しても影響は少な
く磁気特性の劣化を生じることがない。The present invention performs cooling while applying a magnetic field during part of the cooling process after heat treatment. The treatment can be performed in fewer steps than the two-stage treatment process called in-situ heat treatment, and the thermal stress applied to the magnetic core is reduced. Furthermore, since the cooling process is performed slowly, rapid thermal contraction of the magnetic core does not occur, and the influence on amorphous alloys that are sensitive to strain is small, and magnetic properties do not deteriorate.
冷却時にキューリー点より高い温度で磁場をかけると強
い誘導磁気異方性が発生し、保磁力が増大する傾向があ
る。また、冷却速度は余り速いと磁場中冷却の効果が少
なく、薄帯に熱収縮による歪が発生するため上記範囲と
した。冷却時の磁場は交流ｉ＆場が好ましく、商用周波
数から約１００Ｋ ）ｌ Ｚの範囲のものが好ましい。When a magnetic field is applied at a temperature higher than the Curie point during cooling, strong induced magnetic anisotropy occurs and the coercive force tends to increase. Furthermore, if the cooling rate is too fast, the effect of cooling in the magnetic field will be small and distortion will occur in the ribbon due to thermal contraction, so the cooling rate was set in the above range. The magnetic field during cooling is preferably an alternating current i& field, preferably in the range of about 100K)lZ from the commercial frequency.
磁場の強さは０．１工ルステツド以上１０エルステッド
以下が適している。A suitable magnetic field strength is 0.1 Oe or more and 10 Oe or less.
（発明の実施例）
以下に可飽和リアクトルコアを製造した場合の一実施例
を説明する。(Example of the Invention) An example of manufacturing a saturable reactor core will be described below.
巾５ｍｍ 、厚さ１８μｍのＧｏ系系非晶質合金帯帯巻
回し外径２５■、内径１５ｍ５．高さ５１ｍ１の磁心を
成形した。この磁心を窒素ガス雰囲気中で約４００℃、
３０分の熱処理後、炉冷（冷却速度的３℃／■ｉｎ ）
を行なった。この冷却工程の際に炉内温度が約２４０℃
の時点から５０Ｈ２、１エルステツドの交流磁場を加え
冷却した。A Go-based amorphous alloy band with a width of 5 mm and a thickness of 18 μm has an outer diameter of 25 mm and an inner diameter of 15 m5. A magnetic core with a height of 51 m1 was molded. This magnetic core was heated at approximately 400°C in a nitrogen gas atmosphere.
After 30 minutes of heat treatment, furnace cooling (cooling rate: 3℃/■in)
I did it. During this cooling process, the temperature inside the furnace is approximately 240℃.
From this point on, an alternating current magnetic field of 50 H2, 1 oersted was applied for cooling.
この襖、この磁心をケースに詰め交流磁気特性を調べた
。その結果５０ＫＨｚで保磁力０．１６〜０．１９エル
ステツド、角型比（３ｒ／Ｂ＋＞９１〜９９．９％と良
好な磁気特性を有し、変形が少ない可飽和リアクトルコ
アを得ることができた。This fusuma and this magnetic core were packed in a case and the AC magnetic properties were investigated. As a result, we were able to obtain a saturable reactor core with good magnetic properties such as a coercive force of 0.16 to 0.19 oersted and a squareness ratio (3r/B+>91 to 99.9%) at 50 KHz, and little deformation. Ta.
本発明により、磁心の製造がｒＭ潔で磁気特性の良好な
磁心を得ることができる。さらに一度に多くの磁心の処
理が可能であり、工業上極めて有利である。According to the present invention, a magnetic core can be manufactured with rM purity and have good magnetic properties. Furthermore, it is possible to process many magnetic cores at once, which is extremely advantageous industrially.
Claims (4)
の冷却工程においてキューリー点以下で磁場中冷却を行
う磁心の製造方法。(1) A method for producing a magnetic core, in which a magnetic core made of an amorphous alloy ribbon is heat-treated and then cooled in a magnetic field below the Curie point in the cooling process.
度範囲内で行う特許請求の範囲第１項記載の磁心の製造
方法。(2) The method for manufacturing a magnetic core according to claim 1, wherein the heat treatment is carried out within a temperature range above the Curie point and below the crystallization temperature.
ある特許請求の範囲第１項記載の磁心の製造方法。(3) The method for manufacturing a magnetic core according to claim 1, wherein the cooling rate in the cooling step is 5° C./min or less.
特許請求の範囲第１項記載の磁心の製造方法。(4) The method for manufacturing a magnetic core according to claim 1, wherein the magnetic core is a wound magnetic core obtained by winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5486186A JPS62213107A (en) | 1986-03-14 | 1986-03-14 | Manufacture of magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5486186A JPS62213107A (en) | 1986-03-14 | 1986-03-14 | Manufacture of magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62213107A true JPS62213107A (en) | 1987-09-19 |
Family
ID=12982369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5486186A Pending JPS62213107A (en) | 1986-03-14 | 1986-03-14 | Manufacture of magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62213107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2018062310A1 (en) * | 2016-09-29 | 2019-06-24 | 日立金属株式会社 | Nanocrystal alloy core, magnetic core unit and method of manufacturing nanocrystal alloy core |
-
1986
- 1986-03-14 JP JP5486186A patent/JPS62213107A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2018062310A1 (en) * | 2016-09-29 | 2019-06-24 | 日立金属株式会社 | Nanocrystal alloy core, magnetic core unit and method of manufacturing nanocrystal alloy core |
| JP2019201215A (en) * | 2016-09-29 | 2019-11-21 | 日立金属株式会社 | Method for manufacturing nanocrystal alloy magnetic core |
| JP2021002663A (en) * | 2016-09-29 | 2021-01-07 | 日立金属株式会社 | Method for manufacturing nanocrystal alloy magnetic core |
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