JPS6081805A - Wound power transformer of low iron loss - Google Patents

Abstract

PURPOSE:To prevent the deterioration of iron loss due to building factor by a method wherein, after a local crystal region or a linear local distortion region have been formed on the amorphous alloy thin band of specific composition, a distortion-removing process and the like is performed, and its tensile force is introduced into a wound core after a coil has been wound around thereon. CONSTITUTION:A linear local distortion region or a local crystal region is provided in the direction crossing with the longitudinal direction on one side of the amorphous alloy thin band having the component composition of Fe of 75- 83atom%, B of 8-16atom% and Si of 0-10atom% leaving an interval of 5.0- 20mm.. Said thin band is processed on a wound core, and after a distortion-removing annealing has been performed, tensile force of 1.5-3.5kg/mm.<2> is introduced into the wound core C. For example, a scratch-introduced thin band is formed into the shape of the core C, and after a distortion-removing annealing has been performed at 350 deg.C for one hour, the primary and secondary coils (f) and (s) are wound around, and circumferential force is applied on said wound transformer using a pair of metal snaps 1 and 2 and a spring 3.

Description

【発明の詳細な説明】 技　術　分　野 非晶質合金薄帯を用いた、電力用巻きトランスについて
この明細書に述べる技術内容は該トランスの鉄損改良を
目積した開発成果に関連し、該トランスの属する技術分
野を占めている。[Detailed Description of the Invention] Technical Field The technical content described in this specification regarding a wound power transformer using an amorphous alloy ribbon is related to the development results aimed at improving the core loss of the transformer. It occupies the technical field to which the transformer belongs.

背　景　技　術 最近、溶融状態の合金を冷却体上に射出して、急冷凝固
させる直接製板法が開発された。この方法のなかでも急
冷凝固後の原子配列状態が結晶質とならず、ガラス状態
のようにアトランダムな非晶質状態を示す合金いわゆる
非晶質合金薄帯が製造されるようになってきた。Background Technology Recently, a direct plate manufacturing method has been developed in which a molten alloy is injected onto a cooling body and rapidly solidified. Among these methods, the atomic arrangement state after rapid solidification does not become crystalline, and alloys that exhibit an at random amorphous state like a glass state, so-called amorphous alloy ribbons, have been manufactured. .

この材料の鉄損は、従来トランス材として用いられた電
気鉄板に比べほぼ８分の１以下できわめて優れた値を示
し、実際にこのような非晶質合金薄帯を用いて製作した
巻きトランスの鉄損は低い。The iron loss of this material is approximately one-eighth or less than that of electric iron plates conventionally used as transformer materials, and it has been shown to be extremely superior in the core loss of wound transformers manufactured using such amorphous alloy ribbons. The iron loss of is low.

しかし実機に組込んで巻きトランスにした場合には、非
晶質合金薄帯を巻きコアにする前の鉄損と比べてかなり
大きくなり、いわゆるビルディングファクタの大きいこ
とを示していて、その原因はＦｅ　−Ｂ　−Ｓｉ糸の非
晶質合金薄帯の歪感受性が大きいためである。However, when it is incorporated into an actual machine and made into a wound transformer, the iron loss becomes considerably larger than that before winding the amorphous alloy ribbon into the core, indicating that the so-called building factor is large, and the cause is This is because the amorphous alloy ribbon of Fe-B-Si yarn has high strain sensitivity.

発　想　の　基　礎 上記のようなビルディングファクタによる鉄損劣化を防
ぐ目的で様々な実験を繰り返した結果、非晶質合金薄帯
に、その長手方向に対して交差する方向に間隔が５゜０
〜２０闘の線状の局部結晶域又は線状の局部歪領域を導
入した後、巻きコアとし、ついで歪取、応力開放焼なま
しを施し、さらに銅の２次、１次の線輪を巻いた後、巻
きコアにその内側から張力を導入することによって、す
ぐれた鉄損の改善が実現されることを見出した。Basis of the Idea As a result of repeating various experiments with the aim of preventing core loss deterioration due to the above-mentioned building factors, we found that an amorphous alloy ribbon has a spacing of 5° in the direction transverse to its longitudinal direction.
After introducing a linear local crystal region or a linear local strain region of ~20 mm, it is made into a wound core, then subjected to strain relief and stress release annealing, and then secondary and primary copper wire rings are formed. It has been found that by introducing tension into the wound core from the inside after winding, an excellent improvement in iron loss can be achieved.

発　明　の　目　的 この知見により、非晶質合金薄帯を用いた、電力巻きト
ランスについて、鉄損の低い電力用巻きトランスを得る
ことがこの発明の目的である。Purpose of the Invention Based on this knowledge, it is an object of the present invention to obtain a power winding transformer with low iron loss using an amorphous alloy ribbon.

発　明　の　構　成 上記の目的は、次の事項を骨子とする仕組みにより有利
に成就される。Structure of the Invention The above object is advantageously achieved by a mechanism consisting of the following matters.

Ｆｅ７５〜８８原子％−Ｂ８〜１６原子％　・ＳｉＯ〜
１０原子係（以下単に係で示す）の成分組成を有する非
晶質合金薄帯より成り、その長手方向に対して交差する
方向に５．０〜２０闘間隔で線状の局部歪領域又は局部
結晶域を薄帯の片面上にそなえ、かつ該薄帯の巻きコア
加工と歪取り焼なましを経てから巻きコアに導入した、
１．５〜８．５に９／鰭２　の張力を内蔵することから
なる鉄損の低い電力用巻きトランス。Fe75-88 at%-B8-16 at% ・SiO~
Consisting of an amorphous alloy ribbon having a component composition of 10 atoms (hereinafter simply referred to as atomic), linear local strain regions or local regions are formed at intervals of 5.0 to 20 atoms in a direction crossing the longitudinal direction of the ribbon. A crystalline region is provided on one side of the ribbon, and the ribbon is processed into a wound core and annealed to remove strain before being introduced into the wound core.
A power winding transformer with low iron loss that has a built-in tension of 9/fin2 between 1.5 and 8.5.

まずこの発明において非晶質合金薄帯の成分組成を上記
のように限定する理由は次のとおりである。First, the reason why the composition of the amorphous alloy ribbon is limited as described above in this invention is as follows.

Ｆｅ：’７５〜８８％ ７５チ以下では非晶質化しに＜＜、また、８８％以上で
は非晶質になっても、結晶化し易く、安定性が悪いので
、Ｆｅは７５〜８３％の範囲とする。Fe: '75-88% If it is less than 75%, it will become amorphous, and if it is more than 88%, even if it becomes amorphous, it will easily crystallize and have poor stability. range.

Ｂ：８〜１６％ ８憾以下では、非晶質形成能がいちぢるしく悪い、又１
６％以上は、高価なりが多すぎて不経済なのでＢは８〜
１６％の範囲とする。B: 8 to 16% If it is less than 8%, the amorphous formation ability is very poor, or 1
6% or more is too expensive and uneconomical, so B is 8~
The range is 16%.

Ｓｌ　：　０〜１０　％ Ｂとおきかえることによって、磁気特性を大巾に劣化さ
せるものではなく、また非晶質の安定性が向上するので
望ましい元素であるが１０％以上添加すると、非晶質形
成能がいちぢるしく態化するので、Ｓｉは１０係以下と
する。Sl: 0 to 10% By replacing it with B, it is a desirable element because it does not significantly deteriorate the magnetic properties and improves the stability of the amorphous state, but if it is added in an amount of 10% or more, it may cause the formation of an amorphous state. Since the Noh effect takes on a dramatic form, Si should be set to 10 or less.

さて上記成分組成に成るＦｅ　−Ｂ　−Ｓｉ系非晶質合
金薄帯の片面上に長手方向とほぼ直角にボールペンで線
状に歪を導入（以下スクラッチという）した。Now, on one side of the Fe-B-Si amorphous alloy ribbon having the above-mentioned composition, a linear strain (hereinafter referred to as a scratch) was introduced with a ballpoint pen approximately perpendicular to the longitudinal direction.

このときボールペンによるスクラッチの度合いは、ペン
先の圧力が大体８〜５φυ１２であった。At this time, the degree of scratching by the ballpoint pen was approximately 8 to 5φυ12 at the pressure of the pen tip.

このようなスクラッチを導入した薄帯を、第１図に示す
ようなコアＣの形状に仕上げ、歪取焼なましを８５０℃
で１時間保持して行なった後第２図に示すように１次、
２次の線輪ｆ、ｓを巻いた。The ribbon with such scratches introduced is finished into the shape of core C as shown in Figure 1, and strain relief annealed at 850°C.
After holding for 1 hour at
The secondary coils f and s were wound.

この巻きトランスにつき、第２図に示す一対の当て金１
．２とげね８とを用い、コアＣに０．５〜４．７　ｋＶ
４ｎｍ２の円周張力を付加し鉄損に及ぼす影響を調べた
。For this winding transformer, a pair of pads 1 shown in FIG.
．． 2 and 8, applying 0.5 to 4.7 kV to core C.
A circumferential tension of 4 nm2 was applied to examine the effect on iron loss.

その結果の１例をＦｅ７Ｂ　％・Ｂ１４％・Ｓ１８％の
成分組成の急冷薄帯を用いた巻きトランスにつき第８図
に示すように、隣接するスクラッチ間隔が２０〜５．Ｑ
ｇｍの範囲でＷ１８１５０における鉄損（測定条件につ
き以下同様）は０．２０ｖｌＡ＋未満の値を示す。An example of the results is shown in FIG. 8 for a wound transformer using a quenched ribbon with a composition of Fe7B%, B14%, and S18%, where the interval between adjacent scratches is 20 to 5.5%. Q
In the range of gm, the iron loss in W18150 (the same applies below for measurement conditions) shows a value of less than 0.20 vlA+.

とくにスクラッチ間隔がｌＱｚｍの場合は、巻きコア０
に張力１．５〜２．５　ｋｇＡＬｍ２を付加すると０．
１０Ｗ＾以下の鉄損を示し、この鉄損値はきわめてすぐ
れたものである。Especially when the scratch interval is lQzm, the winding core is 0.
When a tension of 1.5 to 2.5 kgALm2 is applied to 0.
It shows an iron loss of 10W^ or less, and this iron loss value is extremely excellent.

たとえばスクラッチを入れて巻きコアにしたのち歪取り
焼なまししただけの第１図に示す巻きコア０の鉄損値は
、焼なまし条件をいかに適切にしても、張力を加えない
場合は、せいぜい０．１８η〜程度にとどまっていた。For example, no matter how appropriate the annealing conditions are, the iron loss value of the wound core 0 shown in Figure 1, which is simply made into a wound core by scratching and then annealed to remove strain, is, if no tension is applied, no matter how appropriate the annealing conditions are. It remained at most about 0.18η.

また第２図に示すようにして巻きコア０に張力を付加し
た場合でも張力をあまり強くしすぎると、逆に鉄損が劣
化する傾向を生じてその極小値もまた、上記範囲のスク
ラッチがない場合と同じくせいぜい０．１８Ｗ／７ｃ９
程度であった。Furthermore, even when tension is applied to the winding core 0 as shown in Figure 2, if the tension is too strong, the iron loss tends to deteriorate, and its minimum value also means that there are no scratches in the above range. As in the case, at most 0.18W/7c9
It was about.

スクラッチの間隔と巻きコアに付加する張力との適切な
組合せとした場合に限って低い鉄損を実現できることが
以上のとおり明らかである。It is clear from the above that low iron loss can be achieved only when the scratch spacing and the tension applied to the wound core are appropriately combined.

スクラッチ即ち線状歪導入は、ボールペンではかく以外
に鋭利なナイフの先や、ダイヤモンドの鋭角で深さ数μ
ｍ以内の切り傷を付けることによってもほぼ同様の効果
が得られるほか、たとえば発熱線を非晶質合金の面に押
しつけることによる局部昇温を結晶化温度の近傍にて施
しこれにて線状の局部結晶域を形成させることによって
も同等の効果を得ることができる。Scratches, that is, linear strain introduction, can be applied not only with a ballpoint pen but also with the tip of a sharp knife or the acute angle of a diamond to a depth of several μm.
Almost the same effect can be obtained by making a cut with a diameter of less than m. For example, a heating wire can be pressed against the surface of an amorphous alloy to locally raise the temperature near the crystallization temperature. A similar effect can also be obtained by forming local crystal regions.

実施例Ｉ Ｆｅ　’Ｉ　８憾・Ｂ１８憾・８１９％の成分組成を有
する非晶質台°金薄帯の片面上にその長手方向とほぼ直
交する向きのＩＱａｍ間隔で線状けがきをボールペンで
施した。この非晶質合金薄帯を約１００酩径のトロイド
コアとして１００Ｎ巻いた後、３２０℃８０分、アルゴ
ンガス雰囲気中で歪取り焼なましを施した。Example I Linear markings were made with a ballpoint pen at intervals of IQam in a direction substantially perpendicular to the longitudinal direction on one side of an amorphous gold ribbon having a component composition of Fe'I 8 and B18 and 819%. provided. This amorphous alloy ribbon was wound as a toroid core with a diameter of about 100 N, and then annealed to remove strain at 320° C. for 80 minutes in an argon gas atmosphere.

その後１次、２次コイルを第２図に示すようにそれぞれ
１００回巻いたのち、油圧シリンダーを取りつけて、巻
きコアに２．ＯＪｃｇ／ｆｎｍ２の張力を付加した。After that, the primary and secondary coils were each wound 100 times as shown in Figure 2, and then a hydraulic cylinder was attached to the wound core. A tension of OJcg/fnm2 was applied.

その結果鉄損は０．１１０２ＷＡｃで、線状けがきと張
力導入を省略した場合の０゜１９７ＷＡｃ９に対して著
しく鉄損が改善された。As a result, the iron loss was 0.1102 WAc, which was significantly improved compared to 0°197 WAc9 when linear marking and tension introduction were omitted.

実施例２ Ｆｅ　７９係・Ｂ　］、　５５％Ｓｉ　ｅ係の成分組成
を有する非晶質合金薄帯の片面上にその長平方向と直角
に１０闘間隔でニク四ム線に電流を通じて発熱させ、こ
の線を非晶質合金の面におしあてることにより線状局部
結晶域を導入した後、この薄帯を約１００闘径のトロイ
ドコアとして１００層巻いた。このトロイドコアを８５
０℃で１０分間アルゴンガス雰囲気中で歪取り焼なまし
を施した。Example 2 On one side of an amorphous alloy ribbon having a component composition of 79% Fe, 55% Si and 55% Si, a current was passed through a wire at 10 intervals perpendicular to its elongated direction to generate heat. After applying this wire to the surface of the amorphous alloy to introduce a linear local crystal region, this ribbon was wound in 100 layers as a toroid core with a diameter of about 100. This toroid core is 85
Strain relief annealing was performed at 0° C. for 10 minutes in an argon gas atmosphere.

その後１次、２次コイルを第２図に示すようにそれぞれ
１００回春いた後前下シリンダーを取りつけてほぼ２　
、　Ｑ　Ｑ、４ｍ２の張力を付加して、張力付与をしな
い場合と鉄損を比較した。After that, as shown in Figure 2, after springing the primary and secondary coils 100 times each, the front and lower cylinders were attached and the
, Q Q, 4 m2 of tension was added and the iron loss was compared with that of no tension.

その結果Ｗ１８１５０は無張力の場合０．１５０Ｗ＾で
あったのに対し、張力付加にて０゜１１２ｗ、Ｍまで著
しく鉄損が改善された。As a result, the iron loss of W18150 was 0.150W^ when no tension was applied, but the iron loss was significantly improved to 0°112W^M when tension was applied.

発　明　の　効　果 以上のとおり、この発明は非晶質合金薄帯を用いた電力
用巻きトランスとして鉄損の有効な低減が有利に実現で
きる。Effects of the Invention As described above, the present invention can advantageously realize an effective reduction in iron loss as a power-wound transformer using an amorphous alloy ribbon.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は巻きコアの斜視図、 第２図は張力を付加した巻きトランスを示し、第８図は
電力用巻きトランスの線状歪領域の間隔と導入張力が、
Ｗ１８１５０における鉄損に及ぼす影響を示すグラフで
ある。Fig. 1 is a perspective view of a wound core, Fig. 2 shows a wound transformer with added tension, and Fig. 8 shows the distance between linear strain regions and introduced tension of a power wound transformer.
It is a graph showing the influence on iron loss in W18150.

Claims (1)

【特許請求の範囲】 １　下記成分組成の非晶質合金薄帯よりなり、その長手
方向に対して交差する方向に５．０〜２０ｓｚ間隔で線
状の局部歪領域又は局部結晶域を薄帯の片面上にそなえ
、かつ該薄帯の巻きコア加工と歪取り焼なましを経てか
ら巻きコアに導入した１、５〜Ｌ５　Ｊｃｇ／ｍｍ”の
張力を内蔵することを、特徴とする鉄損の低い電力用巻
きトランス。 記 Ｆｅ７５〜８８°Ｂ８〜１６°ＳｉＯ〜１０添字は原子
％[Scope of Claims] 1. Consisting of an amorphous alloy ribbon having the following component composition, the ribbon has linear local strain regions or local crystal regions at intervals of 5.0 to 20 sz in a direction crossing its longitudinal direction. The iron loss is characterized by having a built-in tension of 1.5 to L5 Jcg/mm, which is provided on one side of the ribbon, and is introduced into the wound core after processing the wound core of the ribbon and annealing it to remove strain. Wound transformer for low power.Fe75~88°B8~16°SiO~10 Subscripts are atomic %