JPS63114207A - Method for working iron core of amorphous alloy thin belt - Google Patents
Method for working iron core of amorphous alloy thin beltInfo
- Publication number
- JPS63114207A JPS63114207A JP26101286A JP26101286A JPS63114207A JP S63114207 A JPS63114207 A JP S63114207A JP 26101286 A JP26101286 A JP 26101286A JP 26101286 A JP26101286 A JP 26101286A JP S63114207 A JPS63114207 A JP S63114207A
- Authority
- JP
- Japan
- Prior art keywords
- amorphous alloy
- iron core
- strain
- alloy ribbon
- type
- 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 40
- 238000000034 method Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 38
- 238000005452 bending Methods 0.000 claims abstract description 21
- 238000000137 annealing Methods 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 abstract description 13
- 230000006866 deterioration Effects 0.000 abstract description 5
- 230000005381 magnetic domain Effects 0.000 abstract description 5
- 230000004907 flux Effects 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 26
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005284 excitation 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
- 230000005415 magnetization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
- Manufacturing Cores, Coils, And Magnets (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Ｄ型鉄心に巻き加工或いは
成形する際の鉄心加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a core processing method for winding or forming an amorphous alloy ribbon onto a D-shaped core.
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、！ｌＪ磁特性が良好であり、鉄損の低いことが要
求される。この鉄損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
ス撰を低減させ、また電気抵抗を高め、板厚を薄くする
ことにより、渦電流損を低減させることが必要である。As an iron core material used in electrical equipment such as single-rotation transformers,! It is required to have good lJ magnetic properties and low iron loss. In order to reduce this iron loss, we must reduce hysteresis by reducing material defects and internal stress, and reduce eddy current loss by increasing electrical resistance and reducing plate thickness. It is necessary.
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、薄帯を圧延等の
工程を経ず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の電気抵抗が高く、非晶質構造のた
め鉄損が著しく低減され、異方性がない。更に、この非
晶質合金薄帯は、励磁特性も優れているので、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 producing an amorphous alloy, a ribbon can be produced directly without going through a process such as rolling. Furthermore, the obtained amorphous alloy ribbon has high electrical resistance, has an amorphous structure, significantly reduces iron loss, and has no anisotropy. Furthermore, this amorphous alloy ribbon has excellent excitation properties, so it is a material that is highly anticipated as an iron core material.
この非晶質合金薄帯をＤ型鉄心として使用する場合、数
ｃＩ１１〜数十国の幅に鋳造された非晶質合金薄帯を所
定の巻き枠に巻き加工し、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 D-type iron core, the amorphous alloy ribbon is cast to a width of several cI11 to several tens of centimeters and is wound into a predetermined winding frame, and then, in most cases, a magnetic field is applied. Anneal. 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、この巻き加工を行うとき、巻き枠に巻き取ら
れた非晶質合金薄帯に、たとえば皺のような歪みが発生
し易い、この巻き歪みの発生は、非晶質合金薄帯の幅が
大きくなるほど顕著に現れる。これは、非晶質合金薄帯
が鋳造のままの形態で使用されることに起因するもので
ある。すなわち、超急冷により非晶質合金薄帯を製造す
る際、高温の溶融金属が急冷凝固されること、ノズルの
加工精度、高温時の変形、冷却ロールの膨張等の変動要
因により、非晶質合金薄帯の形状が不安定なものとなる
。このような形状不良が、非晶質合金薄帯を巻き加工す
る際に歪みとなって現れる。However, when this winding process is performed, distortions such as wrinkles tend to occur in the amorphous alloy ribbon wound around the reel. The larger the value, the more noticeable it becomes. This is due to the fact that the amorphous alloy ribbon is used in the as-cast form. In other words, when manufacturing an amorphous alloy ribbon by ultra-quench cooling, the amorphous material is The shape of the alloy ribbon becomes unstable. Such shape defects appear as distortions when the amorphous alloy ribbon is wound.
この歪みは、巻き加工に続いて行われる焼鈍工程で定着
され、鉄心の磁気特性を劣化させる。This distortion is fixed in the annealing process that follows the winding process, and deteriorates the magnetic properties of the core.
なお、特開昭５７−５４３０８号公報においては、Ｄ型
鉄心の直線部にあたる個所を締付は板で所定形状に保持
した状態で、非晶質合金薄帯を焼鈍することが提案され
ている。しかし、当１亥公報に示されている締付は仮は
、鉄心材料を単にＤ型形状に保持するものに過ぎない。Furthermore, JP-A No. 57-54308 proposes annealing the amorphous alloy ribbon while holding the straight portion of the D-shaped core in a predetermined shape with a plate. . However, the tightening shown in this publication merely holds the core material in a D-shape.
ところが、非晶質合金薄帯をＤ型鉄心に加工する際、コ
ーナ部に曲げ歪みが残留し易く、これによって６磁気特
性が低下する。すなわち、この曲げ残留歪みは、所定方
向に磁区が配向することを妨げ、鉄損悪化の原因となる
。しかし、前述の特開昭５７−５４３０８号公報にあっ
ては、コーナ部に生じる曲げ歪みに対する対策は、示さ
れていない。However, when processing an amorphous alloy ribbon into a D-shaped core, bending strain tends to remain in the corner portions, which deteriorates the magnetic properties. That is, this residual bending strain prevents the magnetic domains from being oriented in a predetermined direction, causing a worsening of iron loss. However, in the above-mentioned Japanese Patent Laid-Open No. 57-54308, no countermeasures against bending distortion occurring at the corner portions are disclosed.
そこで、本発明は、このコーナ部における曲げ残留応力
の影響を緩和して、鉄損が改善された鉄心を得ることを
目的とする。Therefore, an object of the present invention is to alleviate the influence of bending residual stress at the corner portions and obtain an iron core with improved iron loss.
本発明の鉄心加工方法は、その目的を達成するために、
非晶質合金薄帯をＤ型鉄心の巻き枠に直接巻き加工する
か或いはコイル状に巻かれた状態からＤ型鉄心に成形す
るに際し、焼鈍後の曲げ残留歪みを補償する歪みを前記
り型鉄心のコーナ部に予め付与することを特徴とする。In order to achieve the purpose, the iron core processing method of the present invention:
When directly winding the amorphous alloy ribbon onto the spool of a D-shaped core, or when forming a D-shaped core from a coiled state, the above-mentioned strain is applied to compensate for the bending residual strain after annealing. It is characterized by being applied in advance to the corner portions of the iron core.
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.
Ｄ型鉄心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存在している。The amorphous alloy ribbon wound around the D-shaped core is still subject to 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が除去さ
れるが、鉄損を最小とするための最適焼鈍では応力の除
去が完全でなく、焼鈍後も非晶質合金薄帯内に残留応力
として残る。Stress is removed by annealing this amorphous alloy ribbon, but stress is not completely removed by optimal annealing to minimize iron loss, and it remains in the amorphous alloy ribbon even after annealing. It remains as stress.
特にＤ型鉄心のコーナ部は、巻き加工時の曲げ歪みが残
留し、非晶質合金薄帯に圧縮力を与え、鉄心の鉄損を劣
化させる。このコーナ部における鉄損劣化は、鉄心を設
計値どおりの寸法に形成して焼鈍するときには、避けら
れないものである。In particular, in the corner portions of the D-shaped core, bending strain during the winding process remains, which applies compressive force to the amorphous alloy ribbon and deteriorates the iron loss of the core. This deterioration of core loss at the corner portions is unavoidable when the core is formed to the designed dimensions and annealed.
この残留歪みε１は、鉄心加工時に付与した曲げ歪みを
εとするとき、次式（１）で表される。This residual strain ε1 is expressed by the following equation (1), where ε is the bending strain imparted during core processing.
ε ｗ３−ε２ ・・・・ｔｌ） ただし、ａは２０〜３０の係数である。ε w3−ε2 ・・・tl) However, a is a coefficient of 20 to 30.
そこで、本発明にあっては、焼鈍後の曲げ残留歪みを補
償する歪みを前記り型鉄心のコーナ部に予め付与するも
のである。そこで、目標巻き半径をｒとし、巻き加工時
の巻き半径Ｒを（ｒ−Δｒ）、板厚をｔとするとき、残
留歪みｓ、は、次式（２）で表される。Therefore, in the present invention, a strain that compensates for the bending residual strain after annealing is applied in advance to the corner portion of the above-mentioned type iron core. Therefore, when the target winding radius is r, the winding radius R during winding is (r-Δr), and the plate thickness is t, the residual strain s is expressed by the following equation (2).
第１図は、このコーナ部に予め歪みを付与する手段の一
例を示すものである。FIG. 1 shows an example of means for applying distortion to this corner portion in advance.
この例の非晶質合金薄帯１は、−旦コイル状に巻き取ら
れたものをＤ型に成形するか、或いは薄板状から直接り
型に巻き加工したものである。この非晶質合金薄帯ｌを
所定のＤ型に成形するために、直線部１ａを両面から押
え板２ａ、 ２ｂで締め付けている。この締付けにより
、Ｄ型の非晶質合金薄帯ｌのコーナ部１ｂが曲率Ｒをも
って成形される。The amorphous alloy ribbon 1 of this example is first wound into a coil shape and then formed into a D shape, or directly wound from a thin plate shape into a straight shape. In order to form this amorphous alloy ribbon l into a predetermined D shape, the straight portion 1a is clamped from both sides with presser plates 2a and 2b. By this tightening, the corner portion 1b of the D-shaped amorphous alloy ribbon l is formed to have a curvature R.
第２図は、このコーナ部１ｂを中心として説明する図で
ある。第２図（ａｌに示すように、コーナ部１ｂに付与
される曲率Ｒは、焼鈍後に残留する曲げ歪み分Δｒを予
め取り込んだ値としている。この曲げ歪みΔｒは、式（
１）及び（２）から、次式（３）によって示される。FIG. 2 is a diagram mainly illustrating this corner portion 1b. As shown in FIG. 2 (al), the curvature R given to the corner portion 1b is a value that takes in advance the bending strain Δr remaining after annealing. This bending strain Δr is calculated by the formula (
1) and (2), it is expressed by the following equation (3).
Δｒ ｒ ａφｔ
この曲率Ｒをもってコーナ部１ｂが形成されるように、
非晶質合金薄帯１の直線部１ａを押え板２ａ＋２ｂによ
り締め付け、Ｄ型に成形する。このときの締付は力は、
曲げ歪みΔｒが得られる程度で充分であり、この力をあ
まり大きくすると、焼鈍時に隣接する非晶質合金薄帯１
８層間に焼付きが誘発される。Δr r aφt So that the corner portion 1b is formed with this curvature R,
The straight portion 1a of the amorphous alloy ribbon 1 is tightened with presser plates 2a+2b and formed into a D shape. The tightening force at this time is
It is sufficient to obtain a bending strain Δr, and if this force is too large, the adjacent amorphous alloy ribbon 1 will be damaged during annealing.
Burn-in is induced between the 8 layers.
このようにしてＤ型に成形された非晶質合金薄帯１を焼
鈍した後、押え板２ａ、 ２ｂによる締付は力を取り除
く、その結果、曲げ歪みΔ「が解放されて、Ｄ型の非晶
質合金薄帯１は、第２図（′ｂ）に示すように若干変形
し、初期設計値どうりの曲率ｒのコーナ部１ｂをもつも
のとなる。この状態のＤ型鉄心においては、曲げ残留応
力が解放されているので、コーナ部１ｂにおいて磁束に
対して抵抗となるような磁区が発生することが防止され
る。そのため、コーナ部１ｂの磁区の乱れに起因する鉄
損の悪化が改良される。After annealing the amorphous alloy ribbon 1 formed into a D shape in this way, the force is removed by tightening with the holding plates 2a and 2b, and as a result, the bending strain Δ' is released and the D shape is The amorphous alloy ribbon 1 is slightly deformed as shown in FIG. Since the bending residual stress is released, the generation of magnetic domains that create resistance to the magnetic flux at the corner portion 1b is prevented.Therefore, deterioration of iron loss due to disturbance of the magnetic domains at the corner portion 1b is prevented. is improved.
なお、第１図においては、非晶質合金薄帯１を同一幅で
Ｄ型に巻き加工したものであるから、このコーナ部１ｂ
に曲率Ｒを付けるための押え板２ ａ ＋２ｂとしては
、フラフトなものを使用する。Ｄ型鉄心には、このよう
な同一幅で非晶質合金薄帯を巻き加工したものの外に、
たとえば第３図＋８１に示すように段部３が形成される
ように、非晶質合金薄帯１を巻き加工したものもある。In addition, in FIG. 1, since the amorphous alloy ribbon 1 is wound into a D shape with the same width, this corner portion 1b
A flat plate is used as the presser plate 2a + 2b for applying the curvature R to . In addition to the D-type core, which is made by winding an amorphous alloy ribbon with the same width,
For example, there is one in which an amorphous alloy ribbon 1 is wound so that a stepped portion 3 is formed as shown in FIG. 3+81.
この段部３を設けるとき、Ｄ型鉄心に巻き付けられる通
電用コイルが鉄心の陵部で鋭角に曲がることがないので
、占積率が大きくなる。この段部３をもつＤ型鉄心を成
形する場合には、第３図（ｂｌに示すように、Ｄ型鉄心
の断面形状に対応する断面をもつ押え板ｄａｔ４ｂを使
用する。When this stepped portion 3 is provided, the current-carrying coil wound around the D-shaped core is not bent at an acute angle at the ridge of the core, so that the space factor increases. When forming the D-shaped core with this stepped portion 3, as shown in FIG.
以下、実施例により本発明の効果を具体的に説明する。 EXAMPLES Hereinafter, the effects of the present invention will be specifically explained with reference to Examples.
厚さ３０Ｐ１幅１００鶴のＦｅ−５ｔ−Ｂ系非晶質合金
薄帯を、Ｄ型状に巻き加工した。このＤ型の非晶質合金
薄帯の直線部４箇所を幅１１０鶴の鋼板で押さえつけ、
Ｄ型鉄心内周のコーナ部における曲率を、設計値５龍よ
り０．７鶴だけ小さい４．３鶴とした。このＤ型の非晶
質合金薄帯を、窒素ガス雰囲気中で３８０℃に１時間磁
場焼鈍した。得られた製品の鉄損を、次表に示す。A Fe-5t-B amorphous alloy ribbon having a thickness of 30P and a width of 100P was wound into a D shape. The four straight parts of this D-shaped amorphous alloy ribbon are pressed down with a steel plate with a width of 110 mm.
The curvature at the corner of the inner periphery of the D-type core was set to 4.3 Tsuru, which is 0.7 Tsuru smaller than the design value of 5 Dragon. This D-type amorphous alloy ribbon was magnetically annealed at 380° C. for 1 hour in a nitrogen gas atmosphere. The iron loss of the obtained product is shown in the table below.
なお、次表には、通常どうりに巻き加工したＤ型の非晶
質合金薄帯を同一条件で焼鈍することにより得られた鉄
心を、比較例として示している。The following table shows, as a comparative example, an iron core obtained by annealing a D-type amorphous alloy ribbon wound in the usual manner under the same conditions.
この表から明らかなように、本実施例によるとき、残留
応力の影響を少なくして、鉄損の改良が図られている。As is clear from this table, according to this example, the influence of residual stress is reduced and iron loss is improved.
以上に説明したように、本発明の鉄心加工方法において
は、予め曲げ残留歪みを補償する歪みを巻き加工時に与
えておくことにより、Ｄ型鉄心コーナ部の曲げ残留応力
に起因する鉄損の劣化を防止することができる。As explained above, in the core processing method of the present invention, by applying strain to compensate for bending residual strain in advance during winding processing, deterioration of iron loss due to bending residual stress at the corner portion of the D-shaped core is reduced. can be prevented.
第１図は本発明の鉄心加工方法の一例を示すものであり
、第２図ｔａ＋及び（ｂｌはそれぞれ成形時及び焼鈍後
のコーナ部の形状を示し、第３図は他の実施例を示す。Fig. 1 shows an example of the core processing method of the present invention, Fig. 2 ta+ and (bl show the shapes of the corner portions during forming and after annealing, respectively, and Fig. 3 shows another embodiment. .
Claims (1)
するか或いはコイル状に巻かれた状態からＤ型鉄心に成
形するに際し、焼鈍後の曲げ残留歪みを補償する歪みを
前記Ｄ型鉄心のコーナ部に予め付与することを特徴とす
る非晶質合金薄帯の鉄心加工方法。1. When directly winding an amorphous alloy ribbon onto the spool of a D-type core, or when forming a D-type core from a coiled state, the above-mentioned strain is applied to compensate for the residual bending strain after annealing. A method for processing an amorphous alloy ribbon, the method comprising applying the amorphous alloy ribbon to the corner portions of a D-shaped core in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26101286A JPS63114207A (en) | 1986-10-31 | 1986-10-31 | Method for working iron core of amorphous alloy thin belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26101286A JPS63114207A (en) | 1986-10-31 | 1986-10-31 | Method for working iron core of amorphous alloy thin belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63114207A true JPS63114207A (en) | 1988-05-19 |
| JPH0517689B2 JPH0517689B2 (en) | 1993-03-09 |
Family
ID=17355829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26101286A Granted JPS63114207A (en) | 1986-10-31 | 1986-10-31 | Method for working iron core of amorphous alloy thin belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63114207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011210964A (en) * | 2010-03-30 | 2011-10-20 | Toyota Motor Corp | Reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193014A (en) * | 1981-05-22 | 1982-11-27 | Toshiba Corp | Manufacture of wound core |
| JPS59172957A (en) * | 1983-03-18 | 1984-09-29 | Aichi Electric Mfg Co Ltd | Manufacture of wound core |
-
1986
- 1986-10-31 JP JP26101286A patent/JPS63114207A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193014A (en) * | 1981-05-22 | 1982-11-27 | Toshiba Corp | Manufacture of wound core |
| JPS59172957A (en) * | 1983-03-18 | 1984-09-29 | Aichi Electric Mfg Co Ltd | Manufacture of wound core |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011210964A (en) * | 2010-03-30 | 2011-10-20 | Toyota Motor Corp | Reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517689B2 (en) | 1993-03-09 |
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