JPS62277709A - Manufacture of core - Google Patents
Manufacture of coreInfo
- Publication number
- JPS62277709A JPS62277709A JP12020186A JP12020186A JPS62277709A JP S62277709 A JPS62277709 A JP S62277709A JP 12020186 A JP12020186 A JP 12020186A JP 12020186 A JP12020186 A JP 12020186A JP S62277709 A JPS62277709 A JP S62277709A
- Authority
- JP
- Japan
- Prior art keywords
- core
- oxide layer
- annealing
- iron core
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000137 annealing Methods 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 abstract description 12
- 239000011261 inert gas Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 28
- 239000010410 layer Substances 0.000 description 21
- 230000005284 excitation Effects 0.000 description 19
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 235000016999 Ribes cereum Nutrition 0.000 description 1
- 240000004926 Ribes cereum Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
3、発明の詳細な説明
[発明の目的]
(産業上の利用分野)
本発明は変圧器、リアクトルなどの誘導灘器に用いられ
る非晶質磁性薄帯からなる鉄心のWA造方法に係り、特
に磁気特性の改善に関する。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Object of the Invention] (Field of Industrial Application) The present invention relates to an iron core made of amorphous magnetic ribbon used in induction devices such as transformers and reactors. The present invention relates to a WA manufacturing method, and particularly to improving magnetic properties.
(従来の技術)
近年変圧器などの誘導機器に用いられる鉄心材料として
従来からのけい素鋼板、パーマロイ、フェライトなどに
かわり、優れた磁気特性を有する非晶質磁性薄帯を使用
することが試みられている。この種非晶質磁性薄帯は製
造時の残留ひずみを除去しまた鉄心を取り時の残留応力
を除去するために、不活性ガス中で焼鈍して、磁気特性
の向上を図っている。非晶質磁性薄帯の焼鈍は薄帯の種
類によって異なるが、約400℃で2時間程度が適切と
されている。(Prior art) In recent years, attempts have been made to use amorphous magnetic ribbon, which has excellent magnetic properties, as core materials for induction equipment such as transformers, instead of conventional silicon steel sheets, permalloy, ferrite, etc. It is being This type of amorphous magnetic ribbon is annealed in an inert gas to improve its magnetic properties in order to remove residual strain during manufacture and residual stress during core removal. Although annealing of an amorphous magnetic ribbon varies depending on the type of ribbon, it is said that annealing at about 400° C. for about 2 hours is appropriate.
一方非晶質吐性薄帯からなる鉄心を焼鈍すると不活性ガ
ス中の不純物により鉄心端面に酸化層が形成され、この
まま使用するどうf電流層が増大することがある。特に
鉄系非晶質磁性材料を高周波用途の鉄心とじてに使用す
る場合は、異常うf電流層を低減するために、焼鈍温度
を高くしかつ焼鈍時間も長くして微細な結晶粒を析出さ
せる焼鈍方法を採用しており、この場合には鉄心端面に
おける酸化層の形成がより促進され層間短絡によろうず
電流層が増大して磁気特性が悪化する問題が生じた。こ
の酸化層は粘着力が強く鉄心の通常状態での使用で除去
できるものではない。On the other hand, when an iron core made of an amorphous thin ribbon is annealed, an oxidized layer is formed on the end face of the iron core due to impurities in the inert gas, and the current layer may increase if the iron core is used as is. In particular, when iron-based amorphous magnetic materials are used together with iron cores for high-frequency applications, the annealing temperature is high and the annealing time is long to precipitate fine crystal grains in order to reduce the abnormal current layer. However, in this case, the formation of an oxidized layer on the end face of the iron core is further promoted, and a problem arises in that the wax current layer increases due to interlayer short circuits and the magnetic properties deteriorate. This oxide layer has strong adhesion and cannot be removed during normal use of the core.
(発明が解決しようとする問題点)
このように、鉄系非晶質磁性薄帯からなる鉄心は、焼鈍
時に用いられる不活性ガス中の不純物により、鉄心端面
に酸化層が形成される。この酸化層は薄帯間を短絡して
鉄心のうず電流損を増大させるので、非晶質磁性薄帯を
用いて鉄心を製造しても非晶質磁性材料本来の優れた磁
気特性が得られないという問題点があった。(Problems to be Solved by the Invention) As described above, in the iron core made of the iron-based amorphous magnetic ribbon, an oxide layer is formed on the end face of the iron core due to impurities in the inert gas used during annealing. This oxide layer short-circuits the ribbons and increases eddy current loss in the core, so even if the core is manufactured using amorphous magnetic ribbons, the excellent magnetic properties inherent to amorphous magnetic materials cannot be obtained. The problem was that there was no.
本発明は非晶質磁性薄帯からなる鉄心を歪取り焼鈍した
際に鉄心端面に形成された酸化層を除去し、優れた磁気
特性を有する鉄心が得られる鉄心の製造方法を提供する
ことを目的とする。The present invention aims to provide a method for manufacturing an iron core that removes an oxide layer formed on the end face of the iron core when an iron core made of an amorphous magnetic ribbon is annealed to remove strain, thereby obtaining an iron core with excellent magnetic properties. purpose.
[発明の構成]
(問題点を解決するための手段)
非晶質磁性薄帯からなる鉄心は焼鈍時に用いられる不活
性ガス中の微量な酸素や水分と鉄心のFe原子との間の
酸化反応により端面に酸化層が形成される。発明者らは
この酸化層が鉄心に振動を与えることで剥離させ除去で
きることを発見した。そこで本発明は非晶質磁性薄帯の
磁気ひずみが大きいことに着目して非晶質磁性薄帯から
なる鉄心を焼鈍した後に大きな磁界を印加することによ
り鉄心に振動を与えることを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) An iron core made of an amorphous magnetic ribbon undergoes an oxidation reaction between trace amounts of oxygen and moisture in an inert gas used during annealing and Fe atoms of the iron core. An oxide layer is formed on the end surface. The inventors discovered that this oxide layer can be peeled off and removed by applying vibration to the iron core. Therefore, the present invention focuses on the large magnetostriction of an amorphous magnetic ribbon, and is characterized by applying a large magnetic field to the core after annealing the core made of the amorphous magnetic ribbon to give vibration to the core. It is something.
(作 用)
非晶質磁性薄帯からなる鉄心に大きな磁界を印加すると
非晶質磁性薄帯の磁気ひずみによって大きな励磁振動が
発生し、鉄心の焼鈍時に形成された酸化層が剥離され、
薄帯の居間短絡によるうず電流損が低減できる。(Function) When a large magnetic field is applied to an iron core made of an amorphous magnetic ribbon, large excitation vibrations are generated due to the magnetostriction of the amorphous magnetic ribbon, and the oxide layer formed during annealing of the iron core is peeled off.
Eddy current loss caused by short circuits in the living room of the ribbon can be reduced.
(実施例) 第1図〜第3図は本発明の一実施例を示す。(Example) 1 to 3 show an embodiment of the present invention.
第1図において、1は非晶質磁性薄帯を巻回して形成し
た巻鉄心で、図示しない焼鈍装置によって歪取り焼鈍が
施されたものである。歪取り焼鈍はアライド社製非晶質
磁性薄帯METGLAS2605Sを用いた場合、約4
00℃の温度で、2時間程度不活性ガス中で加熱して行
なわれる。In FIG. 1, reference numeral 1 denotes a wound core formed by winding an amorphous magnetic ribbon, which has been subjected to strain relief annealing using an annealing device (not shown). Strain relief annealing is approximately 4
This is carried out by heating at a temperature of 00° C. for about 2 hours in an inert gas.
第2図は第1図に示した巻鉄心1のII−II線断面図
であり、巻鉄心1を歪取り焼鈍した際に、巻鉄心1の両
端面に酸化層6が形成された状態を示している。この巻
鉄心1に第1図に示すように励磁コイル3を巻回し、こ
の励磁コイル3に高周波パワーアンプ4を介して交流電
11i5を接続して巻鉄心1を高周波で励磁する。この
場合、周波数及び磁束!度を高くして鉄心の磁気ひずみ
を増大させれば、巻鉄心1が変圧器鉄心として使用され
たときの磁界中で発生する励磁振動よりも大きな励磁振
動を与えることができる。FIG. 2 is a cross-sectional view taken along the line II-II of the wound core 1 shown in FIG. It shows. An excitation coil 3 is wound around this wound core 1 as shown in FIG. 1, and an AC current 11i5 is connected to this excitation coil 3 via a high frequency power amplifier 4 to excite the wound iron core 1 with high frequency. In this case, frequency and magnetic flux! If the magnetostriction of the core is increased by increasing the magnetostriction, it is possible to provide excitation vibrations larger than those generated in a magnetic field when the wound core 1 is used as a transformer core.
第3図に准鉄心1の磁束密度1.3T(テスラー)にお
ける周波数と磁気ひずみの関係を示す。FIG. 3 shows the relationship between frequency and magnetostriction at a magnetic flux density of 1.3 T (Tesler) of the semi-iron core 1.
磁束苫度が一定の場合周波数の増大に伴なって磁気ひず
みも増加していることが認められる。It is observed that when the magnetic flux tortuosity is constant, the magnetostriction increases as the frequency increases.
第4図に周波数が400 l−1zにおける巻鉄心の磁
束密度と磁気ひずみの関係を示す。磁束密度を増大する
と磁気ひずみが急激に増加することが認められる。磁気
ひずみは巻鉄心を励磁した際に生ずる鉄心の伸縮量すな
わち励磁振動の振幅に相当するから、上述のように磁気
ひずみを大きくすれば巻鉄心1の励磁振動も大きくなり
、この励磁振動によって酸化層6の剥離が可能となる。FIG. 4 shows the relationship between the magnetic flux density and magnetostriction of the wound core at a frequency of 400 l-1z. It is observed that the magnetostriction increases rapidly as the magnetic flux density increases. Since magnetostriction corresponds to the amount of expansion and contraction of the core that occurs when the core is excited, that is, the amplitude of the excitation vibration, as mentioned above, increasing the magnetostriction increases the excitation vibration of the core 1, and this excitation vibration causes oxidation. Peeling of layer 6 becomes possible.
すなわち、焼鈍時に巻鉄心1の端面に発生した酸化層6
は鉄心の使用磁界中に発生する小さな励磁振動では除去
できないが、巻鉄心1の使用磁界より大きい磁束密度領
域あるいは高周波領域の磁界を印加し励磁することによ
って酸化層6が容易に剥離できるようになる。That is, the oxide layer 6 generated on the end face of the wound core 1 during annealing
cannot be removed by small excitation vibrations generated in the working magnetic field of the iron core, but the oxide layer 6 can be easily peeled off by applying and excitation a magnetic field in a magnetic flux density region or high frequency region larger than the working magnetic field of the wound iron core 1. Become.
なお、巻鉄心1端面の酸化層は、
(a)酸化層の粘着力
(b)形成された酸化層の厚さく焼鈍時、不活性ガス中
の酸素m、水分口で異なる)
(C)励磁振動力(励磁周波数、磁束密度の大きさによ
って磁気ひずみ量が異なる)
などによって剥離できる条件が異なるため、巻鉄心1に
印加する磁界の大きさは巻鉄心1の使用磁界以上であっ
ても適宜選択する必要がある。The oxidized layer on the end face of the wound core 1 has the following properties: (a) Adhesion of the oxidized layer (b) Thickness of the formed oxidized layer varies depending on annealing, oxygen m in the inert gas, and water intake) (C) Excitation Since the conditions for peeling differ depending on the vibration force (the amount of magnetostriction varies depending on the excitation frequency and the magnitude of magnetic flux density), etc., the magnitude of the magnetic field applied to the wound core 1 may be adjusted as appropriate even if the magnitude of the magnetic field applied to the wound core 1 is greater than or equal to the working magnetic field of the wound iron core 1. You need to choose.
第5図は酸化層を除去する前と後における巻鉄心の鉄損
(測定周波数4KHz )を磁束密度との関係について
実験した一例である。図中の点線は巻鉄心に励磁振動を
与える前の鉄損を示しており、実線は励磁振動を与えた
後の鉄損値を示している。FIG. 5 is an example of an experiment on the relationship between the iron loss (measured at a measurement frequency of 4 KHz) of the wound core and the magnetic flux density before and after removing the oxide layer. The dotted line in the figure shows the iron loss before applying excitation vibration to the wound core, and the solid line shows the iron loss value after applying excitation vibration.
励磁条件は周波数4001−1z、1束合度1.4丁で
5分間の場合である。第5図に実線で示されるように励
磁振動を与えた巻鉄心は鉄損が各磁束密度において約3
0%減少しており、鉄心に励磁振動を与えた効果が出て
いることがわかる。The excitation conditions were a frequency of 4001-1z, a bundle density of 1.4 teeth, and a duration of 5 minutes. As shown by the solid line in Figure 5, the wound core subjected to excitation vibration has an iron loss of approximately 3 at each magnetic flux density.
It has decreased by 0%, and it can be seen that the effect of applying excitation vibration to the iron core is produced.
なお、上記実施例では巻鉄心を例にとったが積層鉄心で
も同様に実施できるものである。In the above embodiments, a wound core is used as an example, but a laminated core can also be used.
[発明の効果〕
以上説明したように本発明による鉄心の製造法によれば
、非晶質磁性薄帯からなる鉄心に形成された酸化層が除
去できるので、うず電流損が低減できて磁気特性の優れ
た鉄心を得ることができる。[Effects of the Invention] As explained above, according to the method of manufacturing an iron core according to the present invention, the oxide layer formed on the iron core made of amorphous magnetic ribbon can be removed, so that eddy current loss can be reduced and magnetic properties can be improved. It is possible to obtain an excellent iron core.
第1図は本発明の一実施例による鉄心の製造方法を示す
概略図、第2図は焼鈍した後の巻鉄心の状態を示す断面
図、第3図は磁気ひずみと励磁周波数の関係を示す線図
、第4図は磁気ひずみと磁束3度の関係を示す線図、第
5図は本発明方法における励磁振動付与前後における鉄
損変化を示す線図である。
1・・・巻鉄心、 2・・・非晶質磁性薄帯、3・・・
励磁コイル、 4・・・高周波パワーアンプ、5・・・
交流電源、 6・・・酸化層。
代理人 弁理t 則 近 憲 佑
同 三 俣 弘 文集11A
第2図
r@ 農級 (Hz)
第3図
第4図Fig. 1 is a schematic diagram showing a method of manufacturing an iron core according to an embodiment of the present invention, Fig. 2 is a sectional view showing the state of the wound core after annealing, and Fig. 3 shows the relationship between magnetostriction and excitation frequency. 4 is a diagram showing the relationship between magnetostriction and magnetic flux 3 degrees, and FIG. 5 is a diagram showing changes in iron loss before and after applying excitation vibration in the method of the present invention. 1...Wound iron core, 2...Amorphous magnetic ribbon, 3...
Excitation coil, 4...high frequency power amplifier, 5...
AC power supply, 6... oxidation layer. Agent Patent attorney t Rules Noriyuki Chika Hiroshi Mitsumata Collection 11A Figure 2 r @ Agriculture class (Hz) Figure 3 Figure 4
Claims (2)
鉄心に形成された酸化層が剥離する大きさの磁界を印加
して前記鉄心を振動させることを特徴とする鉄心の製造
方法。(1) A method for manufacturing an iron core, which comprises annealing an iron core made of an amorphous magnetic ribbon and then vibrating the iron core by applying a magnetic field large enough to peel off an oxide layer formed on the iron core.
周波数が商用周波数以上であることを特徴とする鉄心の
製造方法。(2) The method for manufacturing an iron core as set forth in claim 1, wherein the frequency of the applied magnetic field is equal to or higher than a commercial frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12020186A JPS62277709A (en) | 1986-05-27 | 1986-05-27 | Manufacture of core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12020186A JPS62277709A (en) | 1986-05-27 | 1986-05-27 | Manufacture of core |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62277709A true JPS62277709A (en) | 1987-12-02 |
Family
ID=14780404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12020186A Pending JPS62277709A (en) | 1986-05-27 | 1986-05-27 | Manufacture of core |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62277709A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05217776A (en) * | 1991-07-05 | 1993-08-27 | General Electric Co <Ge> | Manufacture of amorphous metal iron core for transformer use, including process for reduction of iron loss |
CN112004621A (en) * | 2018-04-25 | 2020-11-27 | 日立金属株式会社 | Amorphous metal ribbon, method for processing same, and method for producing laminate |
-
1986
- 1986-05-27 JP JP12020186A patent/JPS62277709A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05217776A (en) * | 1991-07-05 | 1993-08-27 | General Electric Co <Ge> | Manufacture of amorphous metal iron core for transformer use, including process for reduction of iron loss |
CN112004621A (en) * | 2018-04-25 | 2020-11-27 | 日立金属株式会社 | Amorphous metal ribbon, method for processing same, and method for producing laminate |
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