JPH06204029A - Manufacture of superconducting coil - Google Patents
Manufacture of superconducting coilInfo
- Publication number
- JPH06204029A JPH06204029A JP5000002A JP293A JPH06204029A JP H06204029 A JPH06204029 A JP H06204029A JP 5000002 A JP5000002 A JP 5000002A JP 293 A JP293 A JP 293A JP H06204029 A JPH06204029 A JP H06204029A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- superconducting
- superconducting coil
- alloy
- sheet
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、超電導コイルの製造方
法に関し、特に、超高磁界発生に用いる超電導コイルの
製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a superconducting coil, and more particularly to a method for manufacturing a superconducting coil used for generating an ultrahigh magnetic field.
【０００２】[0002]
【従来の技術】従来、高磁界（〜１Ｔ以上）の発生に用
いる磁石としては、大きさおよび消費電力の観点から、
超電導コイルが多用されている。2. Description of the Related Art Conventionally, as a magnet used for generating a high magnetic field (up to 1 T or more), from the viewpoint of size and power consumption,
Superconducting coils are often used.
【０００３】この超電導コイルは、その超電導材料とし
て、たとえばＮｂＴｉを用いた場合には、ＮｂＴｉ固有
の臨界磁界が小さいため、液体ヘリウムで冷却しても、
８〜９Ｔ程度の磁界しか発生することができない。これ
に対して、超電導材料として、臨界磁界が高いＮｂ3 Ｓ
ｎを用いた超電導コイルは、より高い磁界を発生するこ
とができる。When NbTi, for example, is used as the superconducting material in this superconducting coil, the critical magnetic field peculiar to NbTi is small.
Only a magnetic field of about 8-9T can be generated. On the other hand, as a superconducting material, Nb 3 S with a high critical magnetic field is used.
The superconducting coil using n can generate a higher magnetic field.
【０００４】しかしながら、このＮｂ3 Ｓｎは、歪みや
応力に対して極めて敏感である。そのため、このＮｂ3
Ｓｎからなる超電導線は、０．４％程度の曲げ歪を加え
ると、臨界電流値等の超電導特性が、急激に低下してし
まう。However, this Nb 3 Sn is extremely sensitive to strain and stress. Therefore, this Nb 3
When a bending strain of about 0.4% is applied to a superconducting wire made of Sn, the superconducting characteristics such as the critical current value are drastically deteriorated.
【０００５】そこで、このＮｂ3 Ｓｎ超電導線からなる
超電導コイルを製造する際には、Ｗｉｎｄ ＆ Ｒｅａ
ｃｔ法またはＲｅａｃｔ ＆ Ｗｉｎｄ法のいずれかの
方法がとられてきた。Therefore, when manufacturing a superconducting coil made of this Nb 3 Sn superconducting wire, Wind & Rea is used.
Either the ct method or the React & Wind method has been taken.
【０００６】Ｗｉｎｄ ＆ Ｒｅａｃｔ法とは、線材に
対してコイル巻き等の加工を行なった後に、熱処理を行
なってＮｂ3 Ｓｎを生成し、超電導コイルを製造する方
法である。The Wind & React method is a method of manufacturing a superconducting coil by processing a wire rod, for example, by winding a coil, and then heat-treating the wire to produce Nb 3 Sn.
【０００７】一方、Ｒｅａｃｔ ＆ Ｗｉｎｄ法とは、
熱処理、巻線および冷却の際の歪みによる臨界電流値の
劣化を考慮して、たとえば曲げ歪が０．３％以下に収ま
るように設計して、熱処理を行なってＮｂ3 Ｓｎを生成
し、Ｎｂ3 Ｓｎ超電導線を作製した後に、コイル巻き等
の加工を行なって超電導コイルを製造する方法である。On the other hand, the React & Wind method is
Considering the deterioration of the critical current value due to strain during heat treatment, winding, and cooling, for example, it is designed so that the bending strain is within 0.3%, and heat treatment is performed to generate Nb 3 Sn, 3 This is a method of manufacturing a superconducting coil by manufacturing a Sn superconducting wire and then performing coil winding or the like.
【０００８】[0008]
【発明が解決しようとする課題】上述のＷｉｎｄ ＆
Ｒｅａｃｔ法により超電導コイルを製造する際には、超
電導化合物生成時に約６００℃以上の熱処理が必要にな
るため、ガラス編組等によって超電導線の絶縁が行なわ
れる。しかしながら、このガラス編組によって絶縁を行
なう場合、必要な耐電圧を得るためには、たとえば１ｍ
ｍφの超電導線に対して０．１ｍｍ以上の絶縁被覆を行
なう必要がある。そのため、実際の超電導材料以外の占
める体積が大きくなり、コンパクトな超電導コイルを得
ることができなかった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When a superconducting coil is manufactured by the React method, heat treatment at about 600 ° C. or higher is required when forming a superconducting compound, and thus the superconducting wire is insulated by a glass braid or the like. However, when performing insulation by this glass braid, in order to obtain the necessary withstand voltage, for example, 1 m
It is necessary to perform insulation coating of 0.1 mm or more on the superconducting wire of mφ. Therefore, the volume occupied by the material other than the actual superconducting material becomes large, and a compact superconducting coil cannot be obtained.
【０００９】一方、Ｒｅａｃｔ ＆ Ｗｉｎｄ法により
超電導コイルを製造する際には、熱処理、巻線および冷
却の際の歪みを許容以下に抑えるための設計が必要にな
る。しかしながら、この設計における制限は大きい。し
たがって、Ｒｅａｃｔ ＆Ｗｉｎｄ法は、大型超電導コ
イルの製造には適用できるが、コンパクトな超電導コイ
ルの製造には、適用することができなかった。On the other hand, when manufacturing a superconducting coil by the React & Wind method, it is necessary to design so as to suppress distortion during heat treatment, winding and cooling to an allowable level or less. However, the limitations in this design are significant. Therefore, the React & Wind method can be applied to the production of a large-sized superconducting coil, but it cannot be applied to the production of a compact superconducting coil.
【００１０】この発明の目的は、上述の問題点を解決
し、コンパクトで、しかも高磁界発生可能な超電導コイ
ルの製造方法を提供することにある。An object of the present invention is to provide a method for manufacturing a superconducting coil which solves the above problems and is compact and capable of generating a high magnetic field.
【００１１】[0011]
【課題を解決するための手段】この発明による超電導コ
イルの製造方法は、純ＮｂおよびＮｂ合金シートのうち
から選ばれる第１のシートと、純ＡｌおよびＡｌ合金シ
ートのうちから選ばれる第２のシートとを重ね巻きして
Ｎｂ3 ＡｌまたはＮｂ3 （Ａｌ−Ｙ）化合物系線材（た
だし、Ｙは、Ｎｂ合金またはＡｌ合金を構成する元素）
を作製するステップと、線材に熱処理を施してＮｂ3 Ａ
ｌまたはＮｂ3 （Ａｌ−Ｙ）化合物を生成し、Ｎｂ3 Ａ
ｌまたはＮｂ3 （Ａｌ−Ｙ）超電導線を作製するステッ
プと、熱処理により作製された超電導線を、曲げ歪１％
以下で巻線するステップとを備える。A method of manufacturing a superconducting coil according to the present invention comprises a first sheet selected from pure Nb and Nb alloy sheets and a second sheet selected from pure Al and Al alloy sheets. Nb 3 Al or Nb 3 (Al-Y) compound-based wire rod wound by stacking with a sheet (where Y is an element forming an Nb alloy or an Al alloy)
And the step of making the wire and heat treating the wire to Nb 3 A
1 or Nb 3 (Al—Y) compound is produced, and Nb 3 A
1 or Nb 3 (Al—Y) superconducting wire and the superconducting wire manufactured by heat treatment, bending strain 1%
And the following winding step.
【００１２】なお、この明細書において、「曲げ歪」は
以下のとおり定義される。 曲げ歪（％）＝（線径÷曲げ直径）×１００In this specification, "bending strain" is defined as follows. Bending strain (%) = (wire diameter ÷ bending diameter) x 100
【００１３】[0013]
【発明の作用効果】この発明の製造方法では、純Ｎｂお
よびＮｂ合金シートのうちから選ばれる第１のシート
と、純ＡｌおよびＡｌ合金シートのうちから選ばれる第
２のシートとを重ね巻きして、Ｎｂ3 ＡｌまたはＮｂ3
（Ａｌ−Ｙ）化合物系線材（ただし、Ｙは、Ｎｂ合金ま
たはＡｌ合金を構成する元素）を作製し、この線材に熱
処理を施してＮｂ3 ＡｌまたはＮｂ3 （Ａｌ−Ｙ）化合
物を生成し、Ｎｂ3 ＡｌまたはＮｂ3 （Ａｌ−Ｙ）超電
導線を作製する。According to the manufacturing method of the present invention, the first sheet selected from the pure Nb and Nb alloy sheets and the second sheet selected from the pure Al and Al alloy sheets are stacked and wound. Nb 3 Al or Nb 3
(Al-Y) compound-based wire (although, Y is an element constituting the Nb alloy or Al alloy) were prepared to generate Nb 3 Al or Nb 3 (Al-Y) compound is subjected to a heat treatment to the wires , Nb 3 Al or Nb 3 (Al—Y) superconducting wire is prepared.
【００１４】本発明者は、このようないわゆるジェリー
ロール法によって作製されたＮｂ3ＡｌまたはＮｂ
3 （Ａｌ−Ｙ）超電導線は、熱処理後に１％以下の曲げ
歪を加えても、臨界電流値等の超電導特性が低下しない
ことを見出した。そのため、この発明の方法に従い、ジ
ェリーロール法によって作製されたＮｂ3 ＡｌまたはＮ
ｂ 3 （Ａｌ−Ｙ）超電導線を用いて、Ｒｅａｃｔ ＆
Ｗｉｎｄ法により超電導コイルを製造する際に、１％ま
で曲げ歪を加えることができるため、設計における制限
が緩和される。The present inventor has made such a so-called jerry.
Nb produced by roll method3Al or Nb
3(Al-Y) superconducting wire bends less than 1% after heat treatment
Even if strain is applied, the superconducting characteristics such as the critical current value do not deteriorate.
I found that. Therefore, according to the method of the present invention,
Nb produced by the jelly roll method3Al or N
b 3Using the (Al-Y) superconducting wire, React &
When manufacturing a superconducting coil by the Wind method, 1% or
Bending strain can be applied at
Is alleviated.
【００１５】また、このジェリーロール法によって作製
されたＮｂ3 ＡｌまたはＮｂ3 （Ａｌ−Ｙ）超電導線
は、上述のように、許容歪みが大きいため、熱処理後に
絶縁を施すことができる。そのため、ガラス編組等を用
いた厚い絶縁を施す必要がなく、熱に弱いポリイミド等
を用いた薄い絶縁が可能となる。Since the Nb 3 Al or Nb 3 (Al-Y) superconducting wire produced by this jelly roll method has a large allowable strain as described above, it can be insulated after heat treatment. Therefore, it is not necessary to perform thick insulation using a glass braid or the like, and thin insulation using heat-sensitive polyimide or the like is possible.
【００１６】したがって、この発明によれば、曲げ直径
の小さいコイルでもＲｅａｃｔ ＆Ｗｉｎｄ法によって
製作が可能であるため、熱処理後に、厚さの割には耐電
圧の大きな材料（たとえばポリイミド等の有機化合物
等）での絶縁が可能になり、絶縁を含めたコイル全体の
電流密度を高くできるため、コンパクトな高磁界発生可
能な超電導コイルを製造することができる。Therefore, according to the present invention, even a coil having a small bending diameter can be manufactured by the React & Wind method. Therefore, after heat treatment, a material having a large withstand voltage relative to the thickness (for example, an organic compound such as polyimide). ), The current density of the entire coil including insulation can be increased, so that a compact superconducting coil capable of generating a high magnetic field can be manufactured.
【００１７】[0017]
【実施例】本発明の方法に従って、以下に示すとおり超
電導コイルを作製した。EXAMPLE A superconducting coil was prepared as follows according to the method of the present invention.
【００１８】まず、厚さ０．１８ｍｍ、幅３００ｍｍ、
長さ８００ｍｍのＮｂシートと、厚さ０．０５ｍｍ、幅
３００ｍｍ、長さ５００ｍｍのＡｌシートを用意する。
長さ４００ｍｍの銅棒に、最初にＮｂシートのみを４回
巻き付け、続いてＮｂシートとＡｌシートとを重ね合わ
せた状態で巻き付けた後、最後に残った長さ分のＮｂシ
ートを巻き付けた。このようにして、最外層がＮｂから
なる、いわゆるジェリーロールを作製した後、外径１９
ｍｍ、内径１６ｍｍの銅パイプに挿入した。First, the thickness is 0.18 mm, the width is 300 mm,
An Nb sheet having a length of 800 mm and an Al sheet having a thickness of 0.05 mm, a width of 300 mm and a length of 500 mm are prepared.
First, only the Nb sheet was wound around a copper rod having a length of 400 mm four times, and then the Nb sheet and the Al sheet were wound in a state of being overlapped with each other, and then the Nb sheet having the remaining length was wound. In this way, after producing a so-called jelly roll in which the outermost layer is made of Nb, the outer diameter 19
mm, and the inner diameter was 16 mm.
【００１９】次に、このジェリーロールを、両端合わせ
て１００ｍｍ分の余分な銅棒を除いた後、伸線加工を行
ない、対辺距離２ｍｍ、長さ２００ｍｍの、断面が六角
形状のＮｂ3 Ａｌ単芯線材を作製した。続いて、このＮ
ｂ3 Ａｌ単芯線材を約８００本束ね合わせ、外径７０ｍ
ｍの銅パイプに挿入し、両端を銅製の蓋で閉め、電子ビ
ーム溶接で封止し、ビレットを作製した。このビレット
について、押出しおよび伸線加工を繰返し、最終線径
０．８ｍｍ、長さ約９００ｍのＮｂ3 Ａｌ複合多芯線材
を得た。Next, this jelly roll was subjected to wire drawing after removing excess copper rods for 100 mm in total at both ends, and a hexagonal Nb 3 Al unit having a hexagonal cross section with a distance between opposite sides of 2 mm and a length of 200 mm. A core wire was produced. Next, this N
Approximately 800 b 3 Al single-core wire rods are bundled and the outer diameter is 70 m
It was inserted into a copper pipe of m, closed at both ends with copper lids, and sealed by electron beam welding to prepare a billet. This billet was repeatedly extruded and drawn to obtain a Nb 3 Al composite multifilamentary wire having a final wire diameter of 0.8 mm and a length of about 900 m.
【００２０】さらに、このＮｂ3 Ａｌ複合多芯線材を、
８００℃で５時間熱処理し、Ｎｂ3Ａｌを生成し、Ｎｂ
3 Ａｌ超電導線を作製した。Furthermore, this Nb 3 Al composite multifilamentary wire is
Heat treatment at 800 ℃ for 5 hours to produce Nb 3 Al,
3 Al superconducting wire was produced.
【００２１】このようにして得られたＮｂ3 Ａｌ超電導
線の臨界電流密度を測定したところ、１０Ｔで８５０Ａ
／ｍｍ2 、１２Ｔで５００Ａ／ｍｍ2 、１３Ｔで４００
Ａ／ｍｍ2 であった。The critical current density of the Nb 3 Al superconducting wire thus obtained was measured and found to be 850A at 10T.
/ Mm 2 , 12T: 500A / mm 2 , 13T: 400
It was A / mm 2 .
【００２２】また、このように熱処理によって得られた
Ｎｂ3 Ａｌ超電導線に対して各種の曲げ歪を加え、それ
ぞれの場合での臨界電流値を測定した。その結果を図１
に示す。図１において、横軸は加えた曲げ歪（％）を示
し、縦軸は曲げ歪を加えないときに対する曲げ歪を加え
た場合の臨界電流値の変化量Ｉｃ／Ｉｃ０を示してい
る。なお、図１において、１．３％でのＩｃ／Ｉｃ０値
は０となっているが、これは曲げによって破断が生じた
ため、測定できなかったことを示している。Further, various bending strains were applied to the Nb 3 Al superconducting wire thus obtained by the heat treatment, and the critical current value in each case was measured. The result is shown in Figure 1.
Shown in. In FIG. 1, the horizontal axis represents the applied bending strain (%), and the vertical axis represents the change amount Ic / Ic0 of the critical current value when the bending strain is applied as compared to when the bending strain is not applied. In addition, in FIG. 1, the Ic / Ic0 value at 1.3% is 0, which means that the measurement could not be performed because the fracture occurred due to bending.
【００２３】図１より明らかなように、このジェリーロ
ール法により得られたＮｂ3 Ａｌ超電導線は、曲げ歪を
約１％まで加えても、超電導特性の劣化が認められなか
った。As is clear from FIG. 1, the Nb 3 Al superconducting wire obtained by this jelly roll method showed no deterioration in superconducting characteristics even when a bending strain of up to about 1% was applied.
【００２４】次に、このような超電導特性を有するＮｂ
3 Ａｌ超電導線を用いて、超電導コイルを作製した。Next, Nb having such superconducting characteristics
A superconducting coil was produced using 3Al superconducting wire.
【００２５】まず、ジェリーロール法によって得られた
Ｎｂ3 Ａｌ複合多芯線材を２本用意し、直径２００ｍｍ
のＳＵＳボビンに、カルシウム系の離形材を塗布して巻
き付け、８００℃で５時間の熱処理を行ない、Ｎｂ3 Ａ
ｌ超電導線を作製した。続いて、このＮｂ3 Ａｌ超電導
線を、できるだけ歪みを加えないように注意しながら、
直径１００ｍｍのＳＵＳボビンに、ポリイミド系の有機
絶縁テープ（厚さ０．０２５ｍｍ）をラッピングしなが
ら巻き付けた。すなわち、この巻き付けの際、熱処理後
の超電導線に対して、０．５％の曲げ歪が加えられたこ
とになる。このようにして、高さ２４０ｍｍ、外径１８
５ｍｍの超電導コイルを作製した。First, two Nb 3 Al composite multifilamentary wires obtained by the jelly roll method were prepared and had a diameter of 200 mm.
Of the SUS bobbin wound by applying a releasing material calcium-based, and was heat-treated for 5 hours at 800 ° C., Nb 3 A
l superconducting wire was produced. Then, paying attention to the strain on the Nb 3 Al superconducting wire as little as possible,
A SUS bobbin having a diameter of 100 mm was wrapped around a polyimide organic insulating tape (thickness 0.025 mm) while being wrapped. That is, at the time of this winding, a bending strain of 0.5% was applied to the superconducting wire after the heat treatment. In this way, height 240 mm, outer diameter 18
A 5 mm superconducting coil was produced.
【００２６】図２は、このようにして得られた超電導コ
イルを冷媒に浸漬して使用するための装備を示す。図２
を参照して、超電導コイル１の端子には、電流を流すた
めの１対の電極２と、冷媒に浸漬する際に支持するため
の吊具３が設けられている。FIG. 2 shows the equipment for using the superconducting coil thus obtained by immersing it in a refrigerant. Figure 2
Referring to, the terminals of the superconducting coil 1 are provided with a pair of electrodes 2 for passing an electric current, and a suspending tool 3 for supporting when immersed in the coolant.
【００２７】このように装備される超電導コイルに、１
６８Ａの電流を通電したところ、１０Ｔの磁界を発生し
た。In the superconducting coil thus equipped, 1
When a current of 68 A was applied, a magnetic field of 10 T was generated.
【００２８】さらに、このＮｂ3 Ａｌ超電導コイルを、
内径２００ｍｍのバックアップＮｂＴｉ超電導コイルの
中に挿入した。バックアップＮｂＴｉ超電導コイルに
８．２Ｔの磁界を発生させた状態で、Ｎｂ3 Ａｌ超電導
コイルに通電したところ、２回のトレーニングで１００
Ａまで通電可能になった。このとき、この超電導コイル
は、Ｎｂ3 Ａｌ超電導コイル単独で４．８Ｔ、バックア
ップ磁場を含めて１３Ｔの超高磁界を発生することがで
きた。Further, this Nb 3 Al superconducting coil is
It was inserted into a backup NbTi superconducting coil having an inner diameter of 200 mm. When the Nb 3 Al superconducting coil was energized with a magnetic field of 8.2 T being generated in the backup NbTi superconducting coil, 100 times after two trainings.
It became possible to energize up to A. At this time, this superconducting coil was able to generate an ultrahigh magnetic field of 4.8T by the Nb 3 Al superconducting coil alone and 13T including the backup magnetic field.
【００２９】なお、上述の実施例では、ＡｌシートとＮ
ｂシートが用いられているが、Ａｌシートの代わりにＡ
ｌ合金シートが用いられてもよいし、Ｎｂシートの代わ
りにＮｂ合金シートが用いられてもよい。その際、Ａｌ
合金およびＮｂ合金を構成する元素としては、Ｇｅ、Ｓ
ｎ、Ｔｉ、Ｓｉ、Ｈｆ、Ｔａ、Ｚｒ、Ｍｇ、Ｂｅ等が考
えられる。In the above embodiment, the Al sheet and N
b sheet is used, but A sheet is used instead of Al sheet.
The l-alloy sheet may be used, or the Nb alloy sheet may be used instead of the Nb sheet. At that time, Al
The elements constituting the alloy and the Nb alloy are Ge, S
n, Ti, Si, Hf, Ta, Zr, Mg, Be and the like can be considered.
【図１】Ｎｂ3 Ａｌ超電導線について、曲げ歪を加える
ことによる臨界電流値の変化を示す図である。FIG. 1 is a diagram showing a change in critical current value of Nb 3 Al superconducting wire by applying bending strain.
【図２】超電導コイルを冷媒に浸漬して使用するための
装備を示す斜視図である。FIG. 2 is a perspective view showing an equipment for immersing a superconducting coil in a coolant for use.
１ 超電導コイル 1 Superconducting coil
Claims (1)
選ばれる第１のシートと、純ＡｌおよびＡｌ合金シート
のうちから選ばれる第２のシートとを重ね巻きしてＮｂ
3 ＡｌまたはＮｂ3 （Ａｌ−Ｙ）化合物系線材（ただ
し、Ｙは、前記Ｎｂ合金または前記Ａｌ合金を構成する
元素）を作製するステップと、 前記線材に熱処理を施してＮｂ3 ＡｌまたはＮｂ3 （Ａ
ｌ−Ｙ）化合物を生成し、Ｎｂ3 ＡｌまたはＮｂ3 （Ａ
ｌ−Ｙ）超電導線を作製するステップと、 前記熱処理により作製された前記超電導線を、曲げ歪１
％以下で巻線するステップとを備える、超電導コイルの
製造方法。1. A first sheet selected from pure Nb and Nb alloy sheets and a second sheet selected from pure Al and Al alloy sheets are lapped to form Nb.
3 Al or Nb 3 (Al—Y) compound-based wire (where Y is the Nb alloy or an element forming the Al alloy), and heat-treating the wire to Nb 3 Al or Nb 3 (A
1-Y) compound is produced, and Nb 3 Al or Nb 3 (A
1-Y) a step of producing a superconducting wire, and bending strain 1 to the superconducting wire produced by the heat treatment.
% Winding or less, and a method for manufacturing a superconducting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000002A JPH06204029A (en) | 1993-01-04 | 1993-01-04 | Manufacture of superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5000002A JPH06204029A (en) | 1993-01-04 | 1993-01-04 | Manufacture of superconducting coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06204029A true JPH06204029A (en) | 1994-07-22 |
Family
ID=11462290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5000002A Pending JPH06204029A (en) | 1993-01-04 | 1993-01-04 | Manufacture of superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06204029A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006253592A (en) * | 2005-03-14 | 2006-09-21 | Sumitomo Heavy Ind Ltd | Superconducting coil and its manufacturing method |
| CN107946015A (en) * | 2017-10-26 | 2018-04-20 | 华北电力大学 | One kind is based on Nb3The superconducting magnet of Al superconduction ring plates |
-
1993
- 1993-01-04 JP JP5000002A patent/JPH06204029A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006253592A (en) * | 2005-03-14 | 2006-09-21 | Sumitomo Heavy Ind Ltd | Superconducting coil and its manufacturing method |
| CN107946015A (en) * | 2017-10-26 | 2018-04-20 | 华北电力大学 | One kind is based on Nb3The superconducting magnet of Al superconduction ring plates |
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