JPH1083928A - Manufacture of resin mold superconducting coil - Google Patents
Manufacture of resin mold superconducting coilInfo
- Publication number
- JPH1083928A JPH1083928A JP26030596A JP26030596A JPH1083928A JP H1083928 A JPH1083928 A JP H1083928A JP 26030596 A JP26030596 A JP 26030596A JP 26030596 A JP26030596 A JP 26030596A JP H1083928 A JPH1083928 A JP H1083928A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- inductance
- coil
- curing
- superconducting coil
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 32
- 239000011347 resin Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229920001187 thermosetting polymer Polymers 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 abstract description 9
- 239000003822 epoxy resin Substances 0.000 abstract description 5
- 229920000647 polyepoxide Polymers 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000011800 void material Substances 0.000 abstract description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 31
- 238000004804 winding Methods 0.000 description 10
- 230000035699 permeability Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、リニアモーターカ
ー、ジャイロトロン等に使用される樹脂モールド超電導
コイルの製造方法に関し、特にボイド・クラックや剥離
等の内部欠陥の少ない、信頼性の高い製品を得る方法で
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a resin-molded superconducting coil used for a linear motor car, a gyrotron, etc., and more particularly to a highly reliable product having few internal defects such as void cracks and peeling. How to get.
【０００２】[0002]
【従来の技術】リニアモーターカー、ジャイロトロン等
に使用される高磁場発生用の超電導コイルは、熱硬化性
樹脂で含浸モールドして製造されるが、樹脂中のボイド
・クラック、巻線との剥離等の内部欠陥がある場合、発
生する高磁場によってクエンチ現象が発生し、装置全体
の性能が低下する問題がある。最悪の場合は装置自体の
故障の原因ともなる。2. Description of the Related Art A superconducting coil for generating a high magnetic field used in a linear motor car, a gyrotron, and the like is manufactured by impregnating and molding with a thermosetting resin. When there is an internal defect such as peeling, a quench phenomenon occurs due to the generated high magnetic field, and there is a problem that the performance of the entire apparatus is reduced. In the worst case, it may cause a failure of the device itself.
【０００３】従来、樹脂モールド超電導コイルで品質上
問題になる点は、巻線の太さ、巻線の乱れ、樹脂中のボ
イド・クラック、巻線との剥離等の内部欠陥が挙げられ
る。これらのコイルは種々の形状のものが挙げられる
が、いずれも寸法はかなり大きく、完全にボイドレスで
巻線の界面に剥離、クラック等の欠陥があってはならな
いのである。このため充填剤を加えない低粘度のエポキ
シ樹脂を用いるとともに、高真空下で長時間含浸し、さ
らに高加圧下での加熱硬化によって一体成形される。ま
た、さらに高品質が求められる場合には、型ヒーターで
温度勾配をつけて硬化順序をコントロールし、硬化収縮
の樹脂を常に補償することが行われてきた。この硬化の
コントロールは、型ヒーターの温度制御によって行われ
ていた。Conventionally, quality problems in the resin-molded superconducting coil include internal defects such as winding thickness, winding disturbance, void cracks in the resin, and separation from the winding. These coils may be of various shapes, all of which are quite large in size, and must be completely voidless and must not have defects such as peeling or cracks at the winding interface. For this reason, a low-viscosity epoxy resin to which no filler is added is used, impregnated under a high vacuum for a long time, and further integrally molded by heat curing under a high pressure. Further, when higher quality is required, it has been practiced to control the curing order by applying a temperature gradient with a mold heater and to constantly compensate for the resin that has been cured by shrinkage. This curing was controlled by controlling the temperature of the mold heater.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、樹脂の
硬化の熱源は、型ヒーターの温度以外に樹脂自体の硬化
発熱があり、超電導コイルの寸法が大きいことから、硬
化促進にかなりの影響がある。このため、型ヒーターの
温度管理のみでは、正確に硬化収縮を補償することはで
きない。また、樹脂モールドコイルの硬化過程を細かく
モニターするにしても、従来は温度センサーの挿入によ
る温度管理しかできず、しかも実製品では実行できなか
った。However, as a heat source for curing the resin, in addition to the temperature of the mold heater, there is a heat generated by the curing of the resin itself, and the size of the superconducting coil is large. For this reason, cure shrinkage cannot be accurately compensated only by controlling the temperature of the mold heater. In addition, even if the curing process of the resin mold coil is monitored in detail, the temperature can be controlled only by inserting a temperature sensor in the past, and it could not be performed with an actual product.
【０００５】本発明は、上記の事情に鑑みてなされたも
ので、樹脂中のボイド・クラック、巻線との剥離等の内
部欠陥がなく、安定した品質の樹脂モールド超電導コイ
ルの製造方法を提供しようとするものである。The present invention has been made in view of the above circumstances, and provides a method of manufacturing a resin-molded superconducting coil of stable quality without internal defects such as void cracks in a resin and peeling from a winding. What you want to do.
【０００６】[0006]
【課題を解決するための手段】本発明者は、上記の目的
を達成させるために鋭意研究を重ねた結果、インダクタ
ンスを測定しながらその変化から硬化状態を把握コント
ロールし、熱硬化性樹脂を硬化させることによって、上
記の目的を達成できることを見いだし、本発明を完成し
たものである。Means for Solving the Problems The present inventor has conducted intensive studies in order to achieve the above object, and as a result, while measuring the inductance, grasping and controlling the curing state from the change, the thermosetting resin is cured. The inventors have found that the above objects can be achieved by doing so, and the present invention has been completed.
【０００７】即ち、本発明は、超電導線を所定寸法に巻
き、熱硬化性樹脂を真空含浸して加圧硬化する樹脂モー
ルド超電導コイルの製造方法であって、前記加圧硬化に
おける硬化条件を前記モールドコイルのインダクタンス
の変化によってフィードバック制御することを特徴とす
る樹脂モールド超電導コイルの製造方法である。That is, the present invention relates to a method of manufacturing a resin-molded superconducting coil in which a superconducting wire is wound into a predetermined dimension, and a thermosetting resin is vacuum impregnated and pressure-cured. A method of manufacturing a resin-molded superconducting coil, characterized in that feedback control is performed based on a change in inductance of a molded coil.
【０００８】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００９】初めに基本概念として、熱硬化性樹脂の硬
化度と透磁率およびコイルのインダクタンスの関係につ
いて説明する。First, as a basic concept, the relationship between the degree of cure of a thermosetting resin, the magnetic permeability, and the inductance of a coil will be described.
【００１０】コイルのインダクタンスＬは、回路の形、
大きさと媒質の透磁率μによってきまり、一様な媒質中
では、回路の二つの部分の線要素をｄｓ1 、ｄｓ2 と
し、距離をｒ12として、一般に次の数１の式で表され
る。[0010] The inductance L of the coil is determined by the shape of the circuit,
Determined by the size and the magnetic permeability μ of the medium, and in a uniform medium, the line elements of the two parts of the circuit are represented by ds 1 and ds 2 , and the distance is represented by r 12. .
【００１１】[0011]
【数１】 (Equation 1)
【００１２】また、熱硬化性樹脂の硬化度と粘度と透磁
率μとの関係の概略を図２および図３を用いて説明す
る。図２の実線に示されるように、熱硬化性樹脂の透磁
率μは、硬化度が進むに従って曲線的に大きくなり、硬
化度に対して依存性があることが知られている。そし
て、この時の熱硬化性樹脂の粘度も、図２の鎖線に示さ
れるように、透磁率μと同様に硬化度に対して依存性が
あり、従って透磁率μと熱硬化性樹脂の粘度とは、硬化
条件に関わりなく図３に示すように同一線上にプロット
できる。つまり、モールドコイルの硬化中のインダクタ
ンスの変化は、マトリックス樹脂の硬化度の変化である
といえる。An outline of the relationship between the degree of cure, viscosity, and magnetic permeability μ of the thermosetting resin will be described with reference to FIGS. As shown by the solid line in FIG. 2, it is known that the magnetic permeability μ of the thermosetting resin increases in a curve as the degree of curing increases, and has a dependency on the degree of curing. The viscosity of the thermosetting resin at this time also depends on the degree of hardening as in the case of the magnetic permeability μ, as shown by the chain line in FIG. Can be plotted on the same line as shown in FIG. 3 regardless of the curing conditions. That is, it can be said that a change in inductance during curing of the mold coil is a change in the degree of curing of the matrix resin.
【００１３】次に、実際のコイルのインダクタンスの計
算について説明する。コイルを細かい要素に分割する
と、各要素のインダクタンスは、次の数２の式で表され
る。Next, the calculation of the actual inductance of the coil will be described. When the coil is divided into small elements, the inductance of each element is expressed by the following equation (2).
【００１４】[0014]
【数２】 数２の式の（ｄｓｉ1 ・ｄｓｉ 2／ｒｉ12）の項は、コ
イルの形状・大きさの因子であり、この項をＳｉとまと
め、Ｌｉの巻線の径方向と巻数ｎで積分すれば、コイル
全体のインダクタンスが計算でき、これを次の数３の式
で表すことができる。(Equation 2) The term (dsi 1 · dsi 2 / ri 12 ) in the equation ( 2 ) is a factor of the shape and size of the coil. This term is put together with Si and integrated in the radial direction of the winding of Li and the number of turns n. Thus, the inductance of the entire coil can be calculated, and this can be expressed by the following equation (3).
【００１５】[0015]
【数３】 数３の式を利用して、モールドコイルを理想的な硬化順
序で硬化した場合のインダクタンスの変化の仕方を、計
算と実験で求めておけば、硬化中の全体のインダクタン
スを測定することで、適正な順序で硬化が進行したかど
うか判断をつけることができる。(Equation 3) Using the formula of Equation 3, if the method of inductance change when the mold coil is cured in the ideal curing order is determined by calculation and experiment, by measuring the total inductance during curing, A determination can be made as to whether curing has proceeded in the proper order.
【００１６】本発明の樹脂モールド超電導コイルの製造
方法によれば、樹脂モールドコイルの硬化中に、インダ
クタンスを測定することによって、熱硬化性樹脂の硬化
度および粘度をモニターし、硬化条件を制御すること
で、品質上重要な樹脂中のボイド・クラック、巻線と樹
脂との剥離等の内部欠陥を少なくすることができる。According to the method of manufacturing a resin-molded superconducting coil of the present invention, the degree of curing and the viscosity of the thermosetting resin are monitored by measuring the inductance during the curing of the resin-molded coil, and the curing conditions are controlled. This can reduce internal defects such as voids and cracks in the resin, which are important in quality, and separation between the winding and the resin.
【００１７】[0017]
【発明の実施形態】次に本発明の実施例を図面を用いて
説明するが、本発明はこの実施例によって限定されるも
のではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited by these embodiments.
【００１８】実施例 図１は、本発明に係る樹脂モールドコイルの硬化に用い
る硬化炉、金型および巻線の概略説明図である。同図に
おいて、硬化炉１は30ｋｇ／ｃｍ2 で窒素加圧のできる
圧力タンクである。中芯２に超電導線３が巻き付けられ
ている。この超電導線３はエポキシ樹脂４で真空含浸さ
れている。中芯２の材質には、磁気抵抗が少ないこと
と、エポキシ樹脂の離型を考慮してテフロンを使用して
いる。超電導線３の先端からは、予めリード線５が半田
付けされており、硬化炉１のペネトレーション６を経由
し、インダクタンス計７に接続されており、硬化中にイ
ンダクタンスが計測できるようになっている。Embodiment FIG. 1 is a schematic explanatory view of a curing furnace, a mold, and a winding used for curing a resin mold coil according to the present invention. In FIG. 1, a curing furnace 1 is a pressure tank capable of pressurizing nitrogen at 30 kg / cm 2 . A superconducting wire 3 is wound around the core 2. This superconducting wire 3 is vacuum impregnated with epoxy resin 4. Teflon is used as the material of the core 2 in consideration of low magnetic resistance and mold release of the epoxy resin. A lead wire 5 is soldered in advance from the tip of the superconducting wire 3 and is connected to an inductance meter 7 via a penetration 6 of the curing furnace 1 so that the inductance can be measured during curing. .
【００１９】樹脂モールドコイルを理想的な硬化順序で
硬化した場合のインダクタンスの変化の仕方を、計算と
実験で求めておけば、硬化中の全体のインダクタンスを
測定することで、適正な順序で硬化が進行したかどうか
の判断をつけることができる。この樹脂モールドコイル
のインダクタンスのモニター結果の合否および硬化条件
は、インダクタンス計７に接続されているパソコン８で
フィードバックが行われ、硬化条件の調節が自動的にな
される。このようにして適正な硬化条件で硬化した樹脂
モールドコイルを製造することができる。If the method of inductance change when the resin mold coil is cured in the ideal curing order is determined by calculation and experiment, the entire inductance during curing is measured, and the curing is performed in an appropriate order. Can determine whether the process has progressed. The pass / fail of the monitoring result of the inductance of the resin mold coil and the curing conditions are fed back by a personal computer 8 connected to the inductance meter 7, and the curing conditions are automatically adjusted. Thus, a resin mold coil cured under appropriate curing conditions can be manufactured.
【００２０】[0020]
【発明の効果】以上の説明から明らかなように、本発明
の樹脂モールド超電導コイルの製造方法によれば、樹脂
中のボイド・クラック、巻線との剥離等の内部欠陥がな
く、安定した品質の樹脂モールド超電導コイルを製造す
ることができるものである。As is apparent from the above description, according to the method of manufacturing a resin-molded superconducting coil of the present invention, there are no internal defects such as voids and cracks in the resin and separation from the windings, and stable quality is obtained. Can be manufactured.
【図１】本発明の樹脂モールド超電導コイルの製造方法
に用いる硬化炉、金型および巻線の一部破断正面図であ
る。FIG. 1 is a partially broken front view of a curing furnace, a mold, and a winding used in a method of manufacturing a resin-molded superconducting coil of the present invention.
【図２】熱硬化性樹脂の硬化度に対する粘度と透磁率μ
の関係を示すグラフである。FIG. 2 shows the viscosity and the magnetic permeability μ of the thermosetting resin with respect to the degree of curing.
6 is a graph showing the relationship of.
【図３】熱硬化性樹脂の粘度と透磁率μの関係を示すグ
ラフである。FIG. 3 is a graph showing the relationship between the viscosity of a thermosetting resin and the magnetic permeability μ.
１ 硬化炉 ２ 中芯 ３ 超電導線 ４ エポキシ樹脂 ５ リード線 ６ ペネトレーション ７ インダクタンス計 ８ パソコン DESCRIPTION OF SYMBOLS 1 Curing furnace 2 Core 3 Superconducting wire 4 Epoxy resin 5 Lead wire 6 Penetration 7 Inductance meter 8 Personal computer
Claims (1)
脂を真空含浸して加圧硬化する樹脂モールド超電導コイ
ルの製造方法であって、前記加圧硬化における硬化条件
を前記モールドコイルのインダクタンスの変化によって
フィードバック制御することを特徴とする樹脂モールド
超電導コイルの製造方法。1. A method of manufacturing a resin-molded superconducting coil in which a superconducting wire is wound into a predetermined dimension, and a thermosetting resin is vacuum-impregnated and pressure-cured. A method for manufacturing a resin-molded superconducting coil, wherein feedback control is performed by a change in the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26030596A JPH1083928A (en) | 1996-09-09 | 1996-09-09 | Manufacture of resin mold superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26030596A JPH1083928A (en) | 1996-09-09 | 1996-09-09 | Manufacture of resin mold superconducting coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1083928A true JPH1083928A (en) | 1998-03-31 |
Family
ID=17346192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26030596A Pending JPH1083928A (en) | 1996-09-09 | 1996-09-09 | Manufacture of resin mold superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1083928A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003069687A1 (en) * | 2002-02-11 | 2003-08-21 | Industrial Research Limited | Method and mold for encapsulating high temperature superconductor coils |
| GB2426630A (en) * | 2005-05-26 | 2006-11-29 | Siemens Magnet Technology Ltd | Electromagnet |
| JP2015012257A (en) * | 2013-07-02 | 2015-01-19 | 株式会社東芝 | Heat treatment device and method for superconducting coil |
| CN116453849A (en) * | 2023-06-20 | 2023-07-18 | 山东奥新医疗科技有限公司 | Superconducting coil fat-dipping method and device |
-
1996
- 1996-09-09 JP JP26030596A patent/JPH1083928A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003069687A1 (en) * | 2002-02-11 | 2003-08-21 | Industrial Research Limited | Method and mold for encapsulating high temperature superconductor coils |
| GB2426630A (en) * | 2005-05-26 | 2006-11-29 | Siemens Magnet Technology Ltd | Electromagnet |
| GB2426630B (en) * | 2005-05-26 | 2007-11-21 | Siemens Magnet Technology Ltd | Electromagnet |
| US7859375B2 (en) | 2005-05-26 | 2010-12-28 | Siemens Plc | Electromagnet |
| JP2015012257A (en) * | 2013-07-02 | 2015-01-19 | 株式会社東芝 | Heat treatment device and method for superconducting coil |
| CN116453849A (en) * | 2023-06-20 | 2023-07-18 | 山东奥新医疗科技有限公司 | Superconducting coil fat-dipping method and device |
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