JPS63115616A - Manufacture of toroidal core made of amorphous alloy ribbon - Google Patents
Manufacture of toroidal core made of amorphous alloy ribbonInfo
- Publication number
- JPS63115616A JPS63115616A JP26101386A JP26101386A JPS63115616A JP S63115616 A JPS63115616 A JP S63115616A JP 26101386 A JP26101386 A JP 26101386A JP 26101386 A JP26101386 A JP 26101386A JP S63115616 A JPS63115616 A JP S63115616A
- Authority
- JP
- Japan
- Prior art keywords
- amorphous alloy
- alloy ribbon
- annealing
- toroidal core
- winding
- 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
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 23
- 238000000137 annealing Methods 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052742 iron Inorganic materials 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005381 magnetic domain Effects 0.000 abstract description 4
- 239000011162 core material Substances 0.000 description 18
- 229910000976 Electrical steel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Winding, Rewinding, Material Storage Devices (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、非晶質合金薄帯をコイル状に巻き取り、トロ
イダルコアを製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a toroidal core by winding an amorphous alloy ribbon into a coil shape.
変圧器１回転機等の電気機器に使用される鉄心材料とし
ては、励磁特性が良好であり、鉄を員の低いことが要求
される。この鉄）員を低下させるためには、材料の欠陥
を少なくし、内部応力を下げることにより、ヒステリシ
ス損を低減させ、また電気抵抗を高め、板厚を薄くする
ことにより、堝電流撰を低減させることが必要である。Iron core materials used in electrical equipment such as single-rotation transformers are required to have good excitation characteristics and a low iron content. In order to reduce this iron resistance, we can reduce hysteresis loss by reducing defects in the material and lowering internal stress, and we can also reduce the current sag by increasing electrical resistance and reducing plate thickness. It is necessary to do so.
このような要求を満たす材料として、珪素鋼板又は珪素
鋼帯がこれまで使用されている。Silicon steel plates or silicon steel strips have been used so far as materials that meet these requirements.
この珪素鋼板又は珪素鋼帯は、鋳造、熱延、冷延、焼鈍
等の多数の工程を経る従来の方法により製造されるもの
である。これに対して、合金を高温の溶融状態から超急
冷することにより、液体と同様な構造をもつ非晶質合金
の薄帯を製造する技術が最近開発された。This silicon steel plate or silicon steel strip is manufactured by a conventional method that involves a number of steps such as casting, hot rolling, cold rolling, and annealing. In response, a technology has recently been developed to produce thin strips of amorphous alloys with a structure similar to that of liquids by ultra-quenching the alloys from a high-temperature molten state.
この非晶質合金の製造方法によるとき、薄板を圧延等の
工程を経ることなく直接的に製造することができる。ま
た、得られた非晶質合金薄帯は、従来の珪素鋼板、珪素
鋼帯等に比較して電気抵抗が高く、板厚も薄く、且つ非
晶質構造のために磁気異方性も小さく、鉄損が著しく低
減される。更に、励磁特性も優れているので、この非晶
質合金薄帯は、鉄心材料として大いに期待される材料で
ある。When using this method for manufacturing an amorphous alloy, a thin plate can be directly manufactured without going through a process such as rolling. In addition, the obtained amorphous alloy ribbon has higher electrical resistance and thinner plate thickness than conventional silicon steel plates, silicon steel strips, etc., and has a small magnetic anisotropy due to its amorphous structure. , iron loss is significantly reduced. Furthermore, since it has excellent excitation properties, this amorphous alloy ribbon is a material that is highly anticipated as an iron core material.
この非晶質合金薄帯をトロイダルコアとして使用する場
合、数国〜数十ｃｍの幅に鋳造された非晶質合金薄帯を
所定の巻き枠にコイル状に巻き加工し、次いでたいてい
の場合に磁場焼鈍する。この焼鈍によって、鋳造時の歪
みが開放され、所定の方向に磁化容易軸が揃えられ、鉄
心の磁気特性が向上される。同時に、非晶質合金薄帯の
構造緩和が生じ、外力を必要とすることなく非晶質合金
薄帯が鉄心形状を保つことができるようになる。When this amorphous alloy ribbon is used as a toroidal core, the amorphous alloy ribbon is cast to a width of several centimeters to several tens of centimeters and then wound into a coil shape around a predetermined reel. magnetic field annealing. This annealing releases distortion during casting, aligns the axis of easy magnetization in a predetermined direction, and improves the magnetic properties of the core. At the same time, structural relaxation of the amorphous alloy ribbon occurs, allowing the amorphous alloy ribbon to maintain its core shape without requiring external force.
ところが、非晶質合金薄帯をコイル状に巻き取る際、巻
き締りが発生し易い、この巻き締りは、非晶質合金薄帯
表面に対して垂直方向の力、すなわち面圧となって非晶
質合金薄帯に作用する。このため、焼鈍後のトロイダル
コア内部に歪みが残留し、その歪みに沿って磁区が成長
するため、鉄損が劣化することになる。However, when winding an amorphous alloy ribbon into a coil, tightening tends to occur. Acts on crystalline alloy ribbons. For this reason, strain remains inside the toroidal core after annealing, and magnetic domains grow along the strain, resulting in deterioration of iron loss.
そこで、本発明は、このコイル状に巻かれた非晶質合金
薄帯に残留する歪みの影響を少なくし、鉄損が改善され
たトロイダルコアを得ることを目的とする。Therefore, an object of the present invention is to reduce the influence of residual strain on the amorphous alloy ribbon wound into a coil, and to obtain a toroidal core with improved iron loss.
〔問題点を解決するための手段及び作用〕本発明のトロ
イダルコアの製造方法は、その目的を達成するために、
非晶質合金薄帯をコイル状に巻き加工するに際して、残
留歪みを考慮した分だけ小径に巻き取り、焼鈍後に目標
巻き径に巻きほぐすことを特徴とする。[Means and effects for solving the problems] In order to achieve the object, the toroidal core manufacturing method of the present invention has the following features:
When winding an amorphous alloy ribbon into a coil, the method is characterized in that it is wound to a smaller diameter in consideration of residual strain, and then unwound to a target winding diameter after annealing.
以下、本発明を、その作用と共に具体的に説明する。Hereinafter, the present invention will be specifically explained along with its effects.
コイル状に巻き取られた非晶質合金薄帯は、それまでの
鋳造時及び巻き加工時に発生した応力が残留している。The amorphous alloy ribbon wound into a coil has residual stress generated during casting and winding.
この非晶質合金薄帯を焼鈍することにより応力の除去が
行われるが、鉄損を最少とする最適焼鈍条件ではその応
力の除去が完全ではな（、曲げ歪みが残留応力として残
る。そのために、巻き加工時に鉄心を設計値どうりの寸
法に成形したのでは、焼鈍により若干膨張した鉄心を初
期の設計寸法に収めようとするとき、コイル状の非晶質
合金薄帯各部に圧縮応力が発生し、鉄損を劣化させるこ
とになる。Stress is removed by annealing this amorphous alloy ribbon, but under the optimal annealing conditions that minimize iron loss, the stress is not completely removed (bending strain remains as residual stress. If the core is formed to the design dimensions during the winding process, compressive stress will be applied to each part of the coiled amorphous alloy ribbon when trying to fit the core, which has expanded slightly due to annealing, to the initial design dimensions. This will cause iron loss to deteriorate.
そこで、本発明にあっては、非晶質合金薄帯をコイル状
に巻き加工する際の巻き径を目！！巻き径より若干小さ
くとり、焼鈍後に目標巻き径に巻きほぐしている。この
実際の巻き径は、次のようにして定められる。Therefore, in the present invention, when winding the amorphous alloy ribbon into a coil shape, the winding diameter must be adjusted carefully. ! It is made slightly smaller than the winding diameter, and unwound to the target winding diameter after annealing. This actual winding diameter is determined as follows.
すなわち、本発明者等は、鉄損が最少値を得る焼鈍後に
おいても残留歪みε、が存在し、この残留歪みε、は、
鉄心加工時に付与した曲げ歪み感と次式（１）の関係に
あることを見出した。In other words, the present inventors found that a residual strain ε exists even after annealing where the iron loss reaches its minimum value, and this residual strain ε is
It has been found that there is a relationship between the bending strain feeling imparted during core processing and the following equation (1).
ａ、＝Ａ・ε２ ・・・＋１１
ここで、Ａは、巻き半径によっても変わる係数であるが
、５０土３０の範囲にある。a,=A·ε2...+11 Here, A is a coefficient that varies depending on the winding radius, but is in the range of 50 and 30.
また、目標巻き径をｄ、＠き加工時の径を（ｄ−Δｄ）
、板厚をｔとすると、残留歪みｔｒは、次式（２）で
表される。Also, the target winding diameter is d, and the diameter at the time of machining is (d - Δd)
, where the plate thickness is t, the residual strain tr is expressed by the following equation (2).
expressed.
ε１； □−□・・・・（２）
ｄ−Δｄｄ
これら式＋１１及び（２）から、Δｄは、次式（３）に
より求められる。ε1; □-□...(2) d-Δdd From these equations +11 and (2), Δd is determined by the following equation (3).
Δｄ Ａ−ｔ ｄ
このように、焼鈍による膨張分Δｄを見込んで非晶質合
金薄帯を若干小さめの巻き径ｄ−Δｄでコイル状に巻き
取り、次いで、焼鈍後に巻きほぐしによってその膨張分
Δｄを解放して、目標巻き径ｄのトロイダルコアとする
。なお、この巻きほぐしに際しては、目標巻き径ｄを正
確に得るために、望ましくはコイルの外径を規制してお
く。Δd A-t d In this way, the amorphous alloy ribbon is wound into a coil with a slightly smaller winding diameter d-Δd, taking into account the expansion Δd due to annealing, and then unrolled after annealing to reduce the expansion Δd. is released to form a toroidal core with a target winding diameter d. Note that during this unwinding, the outer diameter of the coil is desirably regulated in order to accurately obtain the target winding diameter d.
また、過度の巻きほぐしを行うとき、鉄心としての占積
率が低下し、形状が不安定になるので、好ましくない、
この点から、係数Ａを５０±３０に保つことが゛必要で
ある。In addition, when unwinding excessively, the space factor of the core decreases and the shape becomes unstable, which is undesirable.
From this point of view, it is necessary to keep the coefficient A at 50±30.
このようにして、焼鈍による膨張が吸収され、実質的に
歪みのないトロイダルコアが得られる。In this way, expansion due to annealing is absorbed and a substantially undistorted toroidal core is obtained.
次いで、実施例により、本発明の効果を具体的に説明す
る。Next, the effects of the present invention will be specifically explained with reference to Examples.
板厚２５％１幅２５鶴のＦｅ−５ｉ−Ｂ系非晶質合金薄
帯を、径４５ｔｍのトロイダルコアに巻き取り、磁場焼
鈍した。焼鈍後、このトロイダルコアを径４６．５重寵
に巻きほぐした。このトロイダルコアの巻きほぐし前後
の鉄損を、次表に示す。An Fe-5i-B amorphous alloy ribbon having a thickness of 25% and a width of 25 mm was wound around a toroidal core with a diameter of 45 tm and annealed in a magnetic field. After annealing, this toroidal core was unwound to a diameter of 46.5 mm. The iron loss before and after unwinding this toroidal core is shown in the table below.
この表から明らかなように、適度の巻きほぐしにより６
撰の改良が大幅に図られる。これは、巻きほぐしにより
、非晶質合金薄帯に残留する歪みがなくなり、磁束に対
して抵抗となるような磁区の生成が抑制されたためであ
る。As is clear from this table, by moderately unrolling the
The selection will be greatly improved. This is because, by unwinding, residual strain in the amorphous alloy ribbon was eliminated, and the generation of magnetic domains that would provide resistance to magnetic flux was suppressed.
以上に説明したように、本発明の製造方法においては、
焼鈍後の非晶質合金薄帯を巻きほぐすことにより、巻き
加工時の応力が焼鈍によって解放されたときに発生する
歪みを防止することができる。そのため、非晶質合金薄
帯内部の磁区配列が改善され、優れた磁気特性をもつ欠
品が得られる。As explained above, in the manufacturing method of the present invention,
By unwinding the amorphous alloy ribbon after annealing, it is possible to prevent distortion that occurs when stress during the winding process is released by annealing. Therefore, the magnetic domain arrangement inside the amorphous alloy ribbon is improved, and a missing piece with excellent magnetic properties can be obtained.
Claims (1)
、残留歪みを考慮した分だけ小径に巻き取り、焼鈍後に
目標巻き径に巻きほぐすことを特徴とする非晶質合金薄
帯製トロイダルコアの製造方法。1. Toroidal made of amorphous alloy ribbon, which is characterized in that when winding an amorphous alloy ribbon into a coil, it is wound to a smaller diameter in consideration of residual strain, and then unwound to the target winding diameter after annealing. Core manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26101386A JPS63115616A (en) | 1986-10-31 | 1986-10-31 | Manufacture of toroidal core made of amorphous alloy ribbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26101386A JPS63115616A (en) | 1986-10-31 | 1986-10-31 | Manufacture of toroidal core made of amorphous alloy ribbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63115616A true JPS63115616A (en) | 1988-05-20 |
| JPH0429442B2 JPH0429442B2 (en) | 1992-05-19 |
Family
ID=17355842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26101386A Granted JPS63115616A (en) | 1986-10-31 | 1986-10-31 | Manufacture of toroidal core made of amorphous alloy ribbon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63115616A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61181114A (en) * | 1985-02-07 | 1986-08-13 | Toshiba Corp | Manufacture of rolled iron core |
-
1986
- 1986-10-31 JP JP26101386A patent/JPS63115616A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61181114A (en) * | 1985-02-07 | 1986-08-13 | Toshiba Corp | Manufacture of rolled iron core |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0429442B2 (en) | 1992-05-19 |
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