JPS636822A - Manufacture of mound core - Google Patents
Manufacture of mound coreInfo
- Publication number
- JPS636822A JPS636822A JP14822586A JP14822586A JPS636822A JP S636822 A JPS636822 A JP S636822A JP 14822586 A JP14822586 A JP 14822586A JP 14822586 A JP14822586 A JP 14822586A JP S636822 A JPS636822 A JP S636822A
- Authority
- JP
- Japan
- Prior art keywords
- wound
- core
- amorphous magnetic
- heat
- strip
- 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 7
- 229920001721 polyimide Polymers 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000000137 annealing Methods 0.000 abstract description 22
- 238000004804 winding Methods 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 43
- 238000009413 insulation Methods 0.000 description 11
- 239000011229 interlayer Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 235000016999 Ribes cereum Nutrition 0.000 description 2
- 240000004926 Ribes cereum Species 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012792 core layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 230000003685 thermal hair damage Effects 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
- H01F1/15383—Applying coatings thereon
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は変圧器などのに導機器に用いられる非晶質磁性
薄帯からなる巻鉄心の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for manufacturing a wound core made of an amorphous magnetic ribbon used in conductive equipment such as a transformer.
（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、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
用することが検討されている。特に高周波で動作させる
誘導機器などでは、非晶質磁性薄帯の特徴であるテープ
状の薄帯が容易に製造できること、固有抵抗が大きいな
どにより高周波鉄損が小さくなることによって、この分
野における用途が増加している。(Prior art) In recent years, amorphous magnetic ribbons with excellent magnetic properties have been used as iron core materials for induction equipment such as transformers, replacing the conventional silicon steel, permalloy, ferrite, etc. is being considered. Particularly in induction equipment that operates at high frequencies, the characteristics of amorphous magnetic ribbons include the fact that tape-shaped ribbons can be manufactured easily and the high-frequency iron loss is reduced due to their high specific resistance. is increasing.
しかしながら、非晶質磁性薄帯は一般に絶縁コーティン
グが施されていないために、周波数が１０数Ｋ Ｈ２以
上の変圧器鉄心では鉄心層間の絶縁抵抗が影響し、高周
波におけるうず電流損の増大が問題となることがある。However, since amorphous magnetic ribbons are generally not coated with an insulating coating, insulation resistance between the core layers affects transformer cores with frequencies of 10-odd KH2 or more, resulting in increased eddy current loss at high frequencies. This may happen.
特にパワートランスのように高電圧のものでは巻線１タ
ーンの電圧が高くなるために鉄心層間の絶縁抵抗が低い
と鉄心が局部過熱を生じることがある。Particularly in high-voltage transformers such as power transformers, the voltage per turn of the winding is high, so if the insulation resistance between the core layers is low, local overheating of the core may occur.
この高周波変圧器に用いられる鉄心のうず電流損の増大
を防止する方法としては、特公昭５８−１９７８０４に
示されているように非晶質磁性薄帯にリン酸二水素ナト
リウムなどの無機質絶縁皮膜を塗布し、この薄帯を巻回
して鉄心を形成した後焼鈍する方法や特公昭５９−７９
５１６のように非晶質磁性薄帯を巻回して鉄心を形成し
、歪取焼鈍後に居間抵抗を向上させるために合成樹脂を
含浸する方法などが検討されている。As a method for preventing the increase in eddy current loss in the iron core used in high-frequency transformers, as shown in Japanese Patent Publication No. 58-197804, an inorganic insulation coating such as sodium dihydrogen phosphate is applied to an amorphous magnetic ribbon. A method of applying a thin strip of iron, winding this thin strip to form an iron core, and then annealing it.
A method of winding an amorphous magnetic ribbon to form an iron core, such as No. 516, and impregnating it with synthetic resin to improve resistance after strain relief annealing is being considered.
（発明が解決しようとする問題点）
しかし、非晶質磁性薄帯に絶縁皮膜を塗布する方法では
、絶縁皮膜材と非晶質磁性薄帯との熱膨張係数の差によ
って、薄帯にそりやゆがみが生じ磁気特性の悪化や鉄心
巻取条件の選定がむずかしいなどの問題が生じた。また
非晶質磁性薄帯のエツジ部分は完全にはコーティングさ
れない結果となり端面接触による絶縁特性の低下がみら
れた。(Problem to be solved by the invention) However, in the method of applying an insulating film to an amorphous magnetic ribbon, the ribbon warps due to the difference in thermal expansion coefficient between the insulating film material and the amorphous magnetic ribbon. Problems arose, such as distortion and deterioration of magnetic properties, and difficulty in selecting core winding conditions. In addition, the edge portions of the amorphous magnetic ribbon were not completely coated, resulting in a decrease in insulation properties due to end face contact.
−方、非晶質磁性薄帯を巻回して巻鉄心を形成後、合成
樹脂を含浸して薄帯層間を絶縁する方法では、非晶質磁
性薄帯の応力感受性が大きいために、鉄心形成後歪取焼
鈍して磁気特性の改善を図っても樹脂含浸による応力に
よって焼鈍効果が少なくなり、所望の磁気特性が得られ
ないなどの問題点があった。- On the other hand, in the method of winding an amorphous magnetic ribbon to form a wound core and then impregnating it with synthetic resin to insulate between the ribbon layers, since the amorphous magnetic ribbon is highly sensitive to stress, the core cannot be formed. Even if the magnetic properties are improved by post-strain annealing, the annealing effect is reduced due to the stress caused by resin impregnation, resulting in problems such as failure to obtain the desired magnetic properties.
本発明は前記の問題点を解決するためになされたもので
、非晶質磁性薄帯を巻回して成る巻鉄心において、高周
波による層問うず電流積の増大を防止し、非晶質磁性材
料本来の優れた磁気特性を充分に発揮して品質の良い巻
鉄心を得ることができる製造方法を提供することを目的
としている。The present invention has been made to solve the above-mentioned problems, and it is possible to prevent an increase in the interlayer eddy current product due to high frequency in a wound core formed by winding an amorphous magnetic ribbon, and to It is an object of the present invention to provide a manufacturing method that can fully exhibit the original excellent magnetic properties and obtain a wound core of good quality.
［発明の構成］
（問題点を解決するための手段）
本発明の巻鉄心の製造方法は、非晶質磁性薄帯とこの薄
帯の板幅と同等もしくはそれ以上の幅を有するポリイミ
ドフィルム等の耐熱絶縁フィルムを重ねて巻回して巻鉄
心を形成し、この巻鉄心を所定の焼鈍温度に加熱し焼鈍
することを特徴とする。[Structure of the Invention] (Means for Solving the Problems) The method for manufacturing a wound core of the present invention comprises an amorphous magnetic ribbon and a polyimide film or the like having a width equal to or greater than the width of the ribbon. It is characterized in that the heat-resistant insulating films of 2 are layered and wound to form a wound core, and this wound core is heated and annealed to a predetermined annealing temperature.
（作 用）
巻鉄心は非晶質磁性薄帯と耐熱絶縁フィルムがサンドイ
ンチ状に巻回されているため、薄帯層間は＾い絶縁抵抗
値を有し、高周波によろうず電流積の増大が防止できる
。また、耐熱絶縁フィルムは非晶質磁性薄帯より幅の広
いものを使用しているため非晶質磁性薄帯の端面接触に
よる絶縁抵抗の減少もない。さらに巻鉄心は磁気特性の
向上を図るために４００℃の温度で２時間程加熱して焼
鈍されるが、ポリイミドフィルム等の耐熱絶縁フィルム
はこの温度条件に耐え、層間絶縁抵抗の高い巻鉄心が製
造できる。(Function) Since the wound core is made of an amorphous magnetic ribbon and a heat-resistant insulating film wound in a sandwich-like manner, the insulation resistance between the ribbon layers is high, and the wax current product is reduced by high frequency. Increase can be prevented. Further, since the heat-resistant insulating film is wider than the amorphous magnetic ribbon, there is no reduction in insulation resistance due to end face contact of the amorphous magnetic ribbon. Furthermore, the wound core is annealed by heating at a temperature of 400°C for about 2 hours in order to improve its magnetic properties, but heat-resistant insulating films such as polyimide films can withstand this temperature condition, and the wound core has a high interlayer insulation resistance. Can be manufactured.
（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図において帯状をなす非晶質磁性薄帯１とこの薄帯
１の板幅と同等もしくはそれ以上のテープ幅を有するポ
リイミドフィルム等の耐熱絶縁フィルム２とをガイドロ
ーラ３を介して同時にサンドインチ状に巻回されて巻鉄
心４が形成される。In FIG. 1, a band-shaped amorphous magnetic thin strip 1 and a heat-resistant insulating film 2 such as a polyimide film having a tape width equal to or greater than the width of the thin strip 1 are simultaneously sanded via a guide roller 3. The wound core 4 is formed by winding it into an inch shape.
第２図（ａ）はこのような方法で巻回された巻鉄心４を
示しており、第２図（ｂ）はそのｘ−ｘ”断面を示して
いる。FIG. 2(a) shows the wound core 4 wound in this manner, and FIG. 2(b) shows its xx'' cross section.
第３図は巻鉄心４の焼鈍方法を示す。非晶質磁性薄帯１
と耐熱絶縁フィルム２を巻回して成る巻鉄心４に磁界印
加用の仮巻コイル５を巻回し、このひ鉄心４を電熱ヒー
ター（図示せず）を熱源とする恒温槽６に収容する、そ
して直流電源７により仮巻コイル５に直流電流を通電し
、巻鉄心１に磁界を印加しながら電熱ヒーターの加熱に
より恒温１１４の内部を所定の焼鈍湿度に上昇させて巻
鉄心１を加熱することにより焼鈍を行うものである。FIG. 3 shows a method of annealing the wound core 4. Amorphous magnetic ribbon 1
A temporarily wound coil 5 for applying a magnetic field is wound around a wound iron core 4 formed by winding a heat-resistant insulating film 2, and this iron core 4 is housed in a constant temperature bath 6 whose heat source is an electric heater (not shown). By applying direct current to the pre-wound coil 5 from the DC power source 7 and applying a magnetic field to the wound core 1, the inside of the constant temperature 114 is raised to a predetermined annealing humidity by heating with an electric heater, thereby heating the wound core 1. It performs annealing.
鉄心の層間抵抗とうす電流積による鉄損増加の関係は下
記（１）式で与えられることが知られている。It is known that the relationship between the interlayer resistance of the iron core and the increase in iron loss due to the thin current product is given by the following equation (1).
ρ
ここで、ＷＯ：うず電流積の増加、ｆ：周波数、Ｂｍ：
磁束密度、ａ：鉄心幅、ｔ：板厚、ρ：層間抵抗、ｋ：
比例定数である。ρ Here, WO: increase in eddy current product, f: frequency, Bm:
Magnetic flux density, a: core width, t: plate thickness, ρ: interlayer resistance, k:
It is a constant of proportionality.
すなわち（１）式よりうず電流積の増加は周波数の２乗
に比例し、層間抵抗に反比例するから、高周波で使用さ
れる鉄心については層間抵抗を大きくする必要がある。That is, from equation (1), the increase in the eddy current product is proportional to the square of the frequency and inversely proportional to the interlayer resistance, so it is necessary to increase the interlayer resistance for iron cores used at high frequencies.
本発明の実施例では巻鉄心を構成する非晶質磁性薄帯１
の層間は絶縁抵抗の大きい例えば商品名「カプトン」の
耐熱絶縁フィルム２で絶縁された構成であるため、巻鉄
心４は層間短絡によろうず電流積の増大を防止している
。In the embodiment of the present invention, the amorphous magnetic ribbon 1 constituting the wound core is
Since the layers are insulated by a heat-resistant insulating film 2 having a high insulation resistance, such as the product name "Kapton", the wound core 4 prevents an increase in the fuse current product due to interlayer short circuits.
さらに耐熱絶縁フィルム２のテープ幅は非晶質磁性薄帯
１の板幅と同等もしくはそれより大きいものを巻回して
いるため非晶質磁性薄帯１の端面接触による絶縁抵抗の
低下もなく、高周波で高電圧が作用する機器でも絶縁破
壊を生ずることがなく局部加熱も発生しない。Furthermore, since the tape width of the heat-resistant insulating film 2 is the same as or larger than the width of the amorphous magnetic ribbon 1, there is no reduction in insulation resistance due to contact with the end surfaces of the amorphous magnetic ribbon 1. Even in equipment that is subjected to high frequency and high voltage, there will be no dielectric breakdown and no local heating.
また巻鉄心４は磁気特性の向上を図るため、仮巻コイル
５により直流磁界が印加された状態で恒温槽６で加熱さ
れ焼鈍されるが、耐熱絶縁フィルム２はこの焼鈍条件に
十分耐え、巻鉄心４の絶縁抵抗の低下もほとんどなく、
焼鈍後うず電流積の増大もないことが認められた。In order to improve the magnetic properties, the wound core 4 is heated and annealed in a constant temperature bath 6 while a DC magnetic field is applied by a pre-wound coil 5, but the heat-resistant insulating film 2 can withstand this annealing condition and There is almost no decrease in the insulation resistance of iron core 4,
It was observed that there was no increase in the eddy current product after annealing.
このように非晶質磁性薄帯１と耐熱絶縁フィルム２を同
時に巻回することにより非晶質磁性薄帯１の層間が絶縁
され、高周波においても、層間抵抗の低下によろうず電
流積の増大や局部加熱を生ずることがない。By winding the amorphous magnetic ribbon 1 and the heat-resistant insulating film 2 at the same time in this way, the layers of the amorphous magnetic ribbon 1 are insulated, and even at high frequencies, the interlayer resistance is reduced, which reduces the wax current product. No increase or local heating occurs.
さらには耐熱絶縁フィルム２は巻鉄心４の焼鈍条件に対
して十分耐えるものであるため品質が良好で低損失の巻
鉄心を供給できる。Furthermore, since the heat-resistant insulating film 2 can sufficiently withstand the annealing conditions of the wound core 4, it is possible to supply a wound core with good quality and low loss.
第４図は本発明の他の実施例を示す図であり、非晶質磁
性薄帯１と耐熱絶縁フィルム２を同時にサンドインチ状
に巻回し巻鉄心４を形成した後仮巻コイル５に励磁用の
高周波電流を通電して巻鉄心を励磁し、この励磁による
鉄心自身の発熱で加熱昇温させて焼鈍する方法を採用し
たものである。FIG. 4 is a diagram showing another embodiment of the present invention, in which an amorphous magnetic ribbon 1 and a heat-resistant insulating film 2 are simultaneously wound in a sandwich shape to form a wound core 4, and then a pre-wound coil 5 is energized. This method employs a method in which a high-frequency current is applied to excite the wound iron core, and the iron core itself is heated and heated by the heat generated by this excitation to perform annealing.
巻鉄心４には高周波で励磁するための仮巻コイル５を巻
回する。仮巻コイル５は切換スイッチ８を介して高周波
電源１０と直流電源７に接続される構成である。図中９
は高周波電源１０の電圧を調整する電圧調整器である。A pre-wound coil 5 is wound around the wound core 4 for excitation with high frequency. The temporarily wound coil 5 is connected to a high frequency power source 10 and a DC power source 7 via a changeover switch 8. 9 in the diagram
is a voltage regulator that adjusts the voltage of the high frequency power supply 10.
巻鉄心４の焼鈍を行う場合には切換スイッチ８により仮
巻コイル５を高周波電源１０側に接続し、電圧調整器９
により電圧を調整して仮巻コイル５に高周波電流を通電
する。この交流電流の周波数としては５〜ｌ０ＫＨ２に
選定する。仮巻コイル５に高周波電流を流すと非晶質磁
性薄帯には高周波磁束に伴なううず電流積が発生し、こ
の電力損失により巻鉄心４は発熱し温度上昇する。巻鉄
心１１の温度が非晶質磁性薄帯１の適正焼鈍温度の４０
０℃程度に上昇すれば電圧調整器９により高周波電圧を
調整して温度４００’Ｃを一定時間例えば３０〜６０分
保持する。When annealing the wound core 4, the temporary wound coil 5 is connected to the high frequency power supply 10 side by the changeover switch 8, and the voltage regulator 9
The voltage is adjusted by , and a high frequency current is applied to the temporary winding coil 5 . The frequency of this alternating current is selected to be 5 to 10 KH2. When a high frequency current is passed through the temporarily wound coil 5, an eddy current product is generated in the amorphous magnetic ribbon due to the high frequency magnetic flux, and this power loss causes the wound core 4 to generate heat and rise in temperature. The temperature of the wound core 11 is 40°C, which is the appropriate annealing temperature of the amorphous magnetic ribbon 1.
When the temperature rises to about 0°C, the voltage regulator 9 adjusts the high frequency voltage to maintain the temperature at 400'C for a certain period of time, for example, 30 to 60 minutes.
その後切換スイッチ８の操作で仮巻コイル５を交流電源
１０から直流電源１７に切換え接続する。Thereafter, by operating the changeover switch 8, the temporarily wound coil 5 is switched and connected from the AC power source 10 to the DC power source 17.
これにより巻鉄心４は交流による励磁が停止され冷却を
始める。同時に直流電源７から仮巻コイル５に直流電流
が流れ巻鉄心４に対して直流磁界を与える。このように
して巻鉄心４は磁場中で冷却される。図示してないが加
熱、冷却過程中、不活性ガスが供給されている。また焼
鈍終了後に仮巻コイル５が巻鉄心４から取外されて一連
の焼鈍工程が終了する。As a result, the wound core 4 is stopped from being excited by alternating current and starts cooling. At the same time, a DC current flows from the DC power supply 7 to the temporary winding coil 5 and applies a DC magnetic field to the winding core 4 . In this way, the wound core 4 is cooled in the magnetic field. Although not shown, an inert gas is supplied during the heating and cooling process. Further, after the annealing is completed, the pre-wound coil 5 is removed from the wound core 4, and the series of annealing steps is completed.
このような焼鈍方法を採用すれば鉄心自身の内部発熱に
よる温度上昇であるため、焼鈍時間が短縮でき、耐熱絶
縁フィルム２の熱損傷の影響が少なくなる。また非晶質
磁性薄帯１は均一に加熱焼鈍できるため品質が良好で磁
気特性の優れた巻鉄心４を得ることができる。If such an annealing method is adopted, the temperature rise is caused by internal heat generation of the core itself, so the annealing time can be shortened and the influence of thermal damage on the heat-resistant insulating film 2 can be reduced. Furthermore, since the amorphous magnetic ribbon 1 can be uniformly heated and annealed, a wound core 4 of good quality and excellent magnetic properties can be obtained.
［発明の効果］
以上説明したように本発明による巻鉄心の製造方法によ
れば、層間絶縁抵抗が高く、磁気特性に優れた、非晶質
磁性薄帯からなる巻鉄心を容易に製造できる。[Effects of the Invention] As explained above, according to the method for manufacturing a wound core according to the present invention, a wound core made of an amorphous magnetic ribbon having high interlayer insulation resistance and excellent magnetic properties can be easily manufactured.
第１図は本発明の巻鉄心の製造方法を示す説明図、第２
図（ａ）は第１図の巻鉄心の斜視拡大図、第２図（ｂ）
は第２図（ａ）のｘ−ｘ′断面図、第３図は巻鉄心の焼
鈍方法を示す説明図、第４図は他の実施例による巻鉄心
の焼鈍方法を示す説明図である。
１・・・非晶質磁性薄帯、２・・・耐熱絶縁フィルム、
４・・・巻鉄心、５・・・仮巻コイル、６・・・恒温槽
、７・・・直流電源、１０・・・交流電源。
代理人 弁理士 則 近 憲 佑
周 三 俣 弘 文眸：Ｓ膚課独１
千
ｌ
第１ｖＡ
第、３図FIG. 1 is an explanatory diagram showing the method for manufacturing a wound core of the present invention, and FIG.
Figure (a) is an enlarged perspective view of the wound core in Figure 1, Figure 2 (b)
2(a) is a sectional view taken along the line xx′ of FIG. 2(a), FIG. 3 is an explanatory diagram showing a method of annealing a wound core, and FIG. 4 is an explanatory diagram showing an annealing method of a wound core according to another embodiment. 1... Amorphous magnetic ribbon, 2... Heat-resistant insulating film,
4... Wound iron core, 5... Temporarily wound coil, 6... Constant temperature oven, 7... DC power supply, 10... AC power supply. Agent: Patent Attorney: Nori Chika, Yushu, Hiroshi Mimata, Text: S Dermatology Division, Germany 1
1,000l 1st vA 3rd figure
Claims (1)
上のテープ幅を有するポリイミドフィルム等の耐熱絶縁
フィルムを重ねて巻回して巻鉄心を形成しこの巻鉄心を
所定の温度に加熱して焼鈍したことを特徴とする巻鉄心
の製造方法。An amorphous magnetic thin strip and a heat-resistant insulating film such as a polyimide film having a tape width equal to or greater than the width of the thin strip are layered and wound to form a wound core, and this wound core is heated to a predetermined temperature. A method for manufacturing a wound iron core, characterized in that the core is annealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14822586A JPS636822A (en) | 1986-06-26 | 1986-06-26 | Manufacture of mound core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14822586A JPS636822A (en) | 1986-06-26 | 1986-06-26 | Manufacture of mound core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS636822A true JPS636822A (en) | 1988-01-12 |
Family
ID=15448074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14822586A Pending JPS636822A (en) | 1986-06-26 | 1986-06-26 | Manufacture of mound core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5360647A (en) * | 1990-09-28 | 1994-11-01 | Daicel Chemical Industries, Ltd. | Composite metal sheets |
| JP2011077217A (en) * | 2009-09-30 | 2011-04-14 | Fujitsu General Ltd | Choke coil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958813A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Corp | Manufacture of amorphous metal core |
| JPS6030103A (en) * | 1983-07-28 | 1985-02-15 | Tdk Corp | Amorphous alloy wound core and manufacture of the same |
| JPS60261121A (en) * | 1984-06-07 | 1985-12-24 | Mitsubishi Electric Corp | Manufacture of core for electromagnetic induction apparatus |
| JPS6165418A (en) * | 1984-09-07 | 1986-04-04 | Toshiba Corp | Manufacture of magnetic core |
-
1986
- 1986-06-26 JP JP14822586A patent/JPS636822A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5958813A (en) * | 1982-09-29 | 1984-04-04 | Toshiba Corp | Manufacture of amorphous metal core |
| JPS6030103A (en) * | 1983-07-28 | 1985-02-15 | Tdk Corp | Amorphous alloy wound core and manufacture of the same |
| JPS60261121A (en) * | 1984-06-07 | 1985-12-24 | Mitsubishi Electric Corp | Manufacture of core for electromagnetic induction apparatus |
| JPS6165418A (en) * | 1984-09-07 | 1986-04-04 | Toshiba Corp | Manufacture of magnetic core |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5360647A (en) * | 1990-09-28 | 1994-11-01 | Daicel Chemical Industries, Ltd. | Composite metal sheets |
| JP2011077217A (en) * | 2009-09-30 | 2011-04-14 | Fujitsu General Ltd | Choke coil |
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