JPS62123669A - Joint of superconducting wire - Google Patents
Joint of superconducting wireInfo
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- JPS62123669A JPS62123669A JP26458385A JP26458385A JPS62123669A JP S62123669 A JPS62123669 A JP S62123669A JP 26458385 A JP26458385 A JP 26458385A JP 26458385 A JP26458385 A JP 26458385A JP S62123669 A JPS62123669 A JP S62123669A
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- superconducting
- connection
- superconducting wire
- wires
- superconducting wires
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は超電導線の接続方法に係り、特に超電導体フィ
ラメントと安定化材からなる超ｆｆ１ｌ線を特性劣化を
招くことなく接続するのに好適な超電導線の接続方法に
関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for connecting superconducting wires, and in particular, a method suitable for connecting super FF1L wires made of superconducting filaments and stabilizing materials without causing characteristic deterioration. Related to a method of connecting superconducting wires.
超電導線はＮｂＴｉ合金等の極細多芯線の超電導体フィ
ラメントとＣｕおよびＣｕ合金等からなる安定化材との
複合材料である。A superconducting wire is a composite material of a superconducting filament of an ultrafine multifilamentary wire such as a NbTi alloy and a stabilizing material such as Cu and a Cu alloy.
このような極細多芯線である超電導線の構造例を第９図
ａ）、ｂ）、ｃ）に示す。第９図において示すように、
超電導線３は多数本の極細ナイスの超電導体フィラメン
ト１を安定化材２の中に埋め込んで構成されている。同
図（ａ）は超電導体フィラメント１を安定化材２の中に
分散配置した例であり、同図（ｂ）は超電導体フィラメ
ント１を中心部に集中配置し、その外周を取囲むように
安定化材２を配置した例であり、同図（Ｃ）は安定化材
２の中に超電導体フィラメント１を環状に配置した例で
ある。Examples of the structure of such superconducting wires, which are ultrafine multifilamentary wires, are shown in FIGS. 9a), b), and c). As shown in Figure 9,
The superconducting wire 3 is constructed by embedding a large number of very fine superconducting filaments 1 in a stabilizing material 2. Figure (a) shows an example in which the superconducting filaments 1 are dispersed in the stabilizing material 2, and Figure (b) shows an example in which the superconducting filaments 1 are concentrated in the center and arranged so as to surround the outer periphery. This is an example in which a stabilizing material 2 is arranged, and FIG. 2C is an example in which superconductor filaments 1 are arranged in a ring shape in the stabilizing material 2.
超電導体フィラメント１はＮｂＴｉ合金系の他にＶ Ｇ
ａ１Ｎｂ３Ｓｎ等の化合物系があり、安定化材２にはＣ
ｕおよびＣｕ合金の伯にＡＩおよびＡ１合金等のものが
ある。The superconductor filament 1 is made of NbTi alloy as well as VG
There are compound systems such as a1Nb3Sn, and the stabilizing material 2 contains C.
Examples of U and Cu alloys include AI and A1 alloys.
極細多芯線である超電導線３を線材として超電導マグネ
ット等を製作する場合、超電導線３どうしの接続をする
必要がある。When manufacturing a superconducting magnet or the like using superconducting wires 3, which are ultrafine multifilamentary wires, it is necessary to connect the superconducting wires 3 to each other.
従来、超電導線３の接続は第１０図に示すように、接続
すべき超電導線３どうしを長区間重ね合わせ、その重ね
合わせ部を低抵抗であるインジウム等のはんだ４により
はんだ付けする方法や、第１１図に示すように、クラン
プ治具６で固定した超電導線３どうしを矢印７方向から
突合わせて比較的低い温良で突合わＵ圧接を行なう冷間
圧接法などが知られている。Conventionally, the superconducting wires 3 are connected by overlapping a long section of the superconducting wires 3 to be connected, as shown in FIG. 10, and then soldering the overlapping portion with a low-resistance solder 4 such as indium. As shown in FIG. 11, a cold pressure welding method is known in which superconducting wires 3 fixed with a clamp jig 6 are abutted against each other from the direction of an arrow 7, and U-pressure welding is performed at a relatively low temperature.
このようなはｌυだ伺りや冷間圧接法は接続作業が容易
でかつ簡便なために実作業に取入れられ実用化されてい
る。Such lυ dipping and cold welding methods have been incorporated into actual work and put into practical use because the connection work is easy and simple.
しかし、はんだ付けや冷間圧接には以下のような問題が
残っている。However, the following problems remain with soldering and cold pressure welding.
まず、はｌυだ付け（第１０図）の場合、超電導電流は
超電導線の外周の安定化材２を介して矢印５の方向に流
れるため、接続抵抗を小さくするには接続部に長区間の
重ね合わせを必要とする。しかも、接続部は断面が大き
くなるので、例えばマグネットを作る場合、占積率の低
下は避【プられず、その製作に支障をきたす。また、超
電導線を構成する超電導材料は厳重にコントロールされ
た熱処理を施して製造されているが、はｌνだ付けの際
の加熱による超電導材料が熱劣化する恐れがあり、さら
に、大径の超電導線でははんだ４＝Ｊけが困難で接続が
難しいという欠点があった。First, in the case of lυ soldering (Fig. 10), the superconducting current flows in the direction of arrow 5 through the stabilizing material 2 on the outer periphery of the superconducting wire, so in order to reduce the connection resistance, a long section is installed at the connection part. Requires superposition. Moreover, since the cross section of the connecting portion becomes large, when making a magnet, for example, a reduction in space factor is inevitable, which poses a problem in the production. In addition, although the superconducting materials that make up superconducting wires are manufactured through strictly controlled heat treatment, there is a risk that the superconducting materials will be thermally degraded by heating during soldering. Wires have the disadvantage that solder 4=J is difficult to damage and connection is difficult.
また、冷間圧接の場合、第１１図に示すような＝ ３
一
方法で超電導線３をクランプ治具６で拘束し矢印７の方
向に加圧変形を加えると、時として第１２図に示すよう
に側方に突出したばり８を生成するため、このばりを除
去した後に再度伸線加工を行なう必要があるという欠点
がある。In addition, in the case of cold welding, = 3 as shown in Figure 11.
In one method, when the superconducting wire 3 is restrained with a clamp jig 6 and pressurized deformation is applied in the direction of the arrow 7, a burr 8 protruding laterally as shown in FIG. 12 is sometimes generated. The disadvantage is that it is necessary to perform wire drawing again after removal.
一方、電気的特性から見ても、はんだ付けや冷間圧接の
電流−電圧特性は第１３図に示す曲線（ａ）のように成
る抵抗を持つようになり、本来抵抗零を示す曲線（ｂ）
とは著しく異なり、超電導特性を示さなくなるという問
題点もある。On the other hand, from the viewpoint of electrical characteristics, the current-voltage characteristics of soldering and cold pressure welding have a resistance as shown in the curve (a) shown in Figure 13, and the curve (b) which originally shows zero resistance. )
There is also the problem that it is markedly different from the conventional method, and it no longer exhibits superconducting properties.
したがって、本発明の目的は、上記従来の問題点を解消
し、超電導体フィラメントと安定化材から構成される超
電導線をその仕様ならびに用途に応じた優れた特性を確
保しながら接続することを可能とした超電導線の接続方
法を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned conventional problems, and to make it possible to connect superconducting wires composed of superconducting filaments and stabilizing materials while ensuring excellent characteristics according to their specifications and applications. An object of the present invention is to provide a method for connecting superconducting wires.
本発明は超電導体フィラメントと安定化材で構成される
超電導線の接続されるべき双方の接続部をそぎ継ぎが可
能な形状に予め加工し、しかる後に両そぎ継ぎ面を重ね
合わせ、その重ね合わせ部分を加圧して接続することを
特徴とするものである。In the present invention, both connecting parts of superconducting wires made of superconducting filaments and stabilizing materials are processed in advance into a shape that allows a seam joint, and then the joint surfaces of both sides are overlapped, and the joint parts are overlapped. The feature is that the parts are connected by applying pressure.
以下、本発明に係る超電導線の接続方法を図面を参照し
ながら説明する。Hereinafter, a method for connecting superconducting wires according to the present invention will be explained with reference to the drawings.
第１図（ａ）、（ｂ）ならびに第２図は本発明の一実施
例に係る超電導線の接続方法を説明するための超電導線
の側面図である。一方、第３図は超電導体を接続するた
めの接続装置の断面図である。FIGS. 1A and 1B and FIG. 2 are side views of a superconducting wire for explaining a method of connecting a superconducting wire according to an embodiment of the present invention. On the other hand, FIG. 3 is a sectional view of a connecting device for connecting superconductors.
断面が仮に第９図（Ｃ）に示すような形状を有する超電
導線３を接続する場合、第１図（ａ）および（ｂ）に示
すＪ：うにまずそぎ継ぎ面１２を形成し、エメリペーパ
またはやすりを用いて双方の線材のそぎ継ぎ面１２を超
電導体フィラメント１がツイスト加工されているツイス
トピッチの１／２の長さもくしはそれ以下の長さＨに加
工すいる。エメリペーパまたはや寸りを用いた最終仕上
げ加工は］ニメリベーパの目が１０００番程度の目の細
かな仕上げとする。When connecting superconducting wires 3 having a cross section as shown in FIG. 9(C), first form the seam joint surface 12 shown in FIGS. 1(a) and (b), and then use emery paper or Using a file, the spliced surfaces 12 of both wires are processed to a length H that is 1/2 of the twist pitch at which the superconducting filament 1 is twisted, or less. The final finishing process using Emery paper or Yasun is done with a fine finish of about 1000 grit of Emery vapor.
次に、１０００番程度のペーパで仕上げを行なったそぎ
継ぎ面１２をアルコール等の溶液で脱脂し、さらに硝酸
等の溶液で数秒間エツチングする。Next, the spliced surface 12, which has been finished with approximately No. 1000 paper, is degreased with a solution such as alcohol, and further etched for several seconds with a solution such as nitric acid.
次にツイスト加工されたツイストピッチの１／２長さに
端面加工した双方の超電導線３を第２図に示すように重
ね合わせて第３図に示す接続装置のチャンバー１３内に
挿入する。Next, both superconducting wires 3 whose ends have been twisted to a length of 1/2 of the twist pitch are overlapped as shown in FIG. 2 and inserted into the chamber 13 of the connecting device shown in FIG. 3.
チャンバ−１３に挿入された超電導線３はカー１〜リツ
ジヒータ１４を配備された加熱および固定治具１５に保
持される。カートリッジヒータ１４は線材３を上・下側
から加熱するように上・下それぞれ４本ずつ配置されて
いる。一方、加圧シリンダー１６および加圧治具１７は
超電導線３に加圧力を付加するように配されている。The superconducting wire 3 inserted into the chamber 13 is held by a heating and fixing jig 15 equipped with a car 1 to a rigid heater 14. Four cartridge heaters 14 are arranged on each of the upper and lower sides so as to heat the wire rod 3 from the upper and lower sides. On the other hand, the pressure cylinder 16 and the pressure jig 17 are arranged to apply pressure to the superconducting wire 3.
チャンバー１３内は接続部を任意の温度に加熱するため
に、そぎ継ぎ面１２が酸化しないように排気装置１８を
用いてＩ Ｘ １０−３Ｔｏｒｒ程度に保持するような
構造になっている。The inside of the chamber 13 is designed to maintain the temperature at about I.times.10@-3 Torr using an exhaust device 18 to prevent the spliced surface 12 from oxidizing in order to heat the connection portion to a desired temperature.
ちなみに、チャンバー１３内は真空状態とするばかりで
なく、不活性ガスを充填しながらの接続もできるように
なっている。このために、図示しないが、排気装置１８
の周辺には排気−吸気の切換弁および不活性ガスを供給
できるような配管がなされている。Incidentally, the interior of the chamber 13 is not only kept in a vacuum state, but also can be connected while being filled with an inert gas. For this purpose, although not shown, the exhaust device 18
There is an exhaust/intake switching valve and piping for supplying inert gas around the exhaust/intake valve.
第３図に示すにうな接続装置を用いて断面径が２姻程度
の超電導線３どうしを接続する場合、例えば以下のよう
にして行なう。When connecting superconducting wires 3 having cross-sectional diameters of approximately 2 mm using a connecting device such as the one shown in FIG. 3, the process is performed, for example, as follows.
上述したように、そぎ継ぎ面１２を形成した超電導線３
を重ね合わせて固定治具１５により固定する。次に、そ
ぎ継ぎ而１２を加圧治具１７により、例えば５００ ｋ
ｏｆで加圧し、カートリッジヒータ１４により４００℃
〜５００℃の温度で約１０〜３０分間加熱する。このよ
うな接続条件で超電導線３の固相接続を行なった後の外
観形状を模式的に示すと第４図に示すようになる。すな
わち、超電導線３どうじを接続するに当って、超電導線
３の端面を第１図に示すような形状に加工することによ
り接続しにうとする部分の断面積は、例えば端面の加工
代Ｈを１５ａｘとすると、断面積の棹出公式（π×γ×
１５＃Ｉ）から７．５倍になる。超電導体フィラメント
１の特徴は断面径が数十μｍと極めて細かく、しかも数
百本におよぶ多芯であるということを考え合わせると、
接続部の断面積を大きくとることにより接続部の信頼性
が高くなることは歴然としている。As described above, the superconducting wire 3 with the spliced surface 12 formed thereon
are superimposed and fixed using a fixing jig 15. Next, the spliced piece 12 is pressed with a pressure jig 17, for example, at a pressure of 500 kg.
of, and heated to 400°C by cartridge heater 14.
Heat at a temperature of ~500°C for about 10-30 minutes. FIG. 4 schematically shows the appearance after solid-phase connection of the superconducting wire 3 under such connection conditions. That is, when connecting two superconducting wires 3, the cross-sectional area of the part to be connected by processing the end surfaces of the superconducting wires 3 into the shape shown in FIG. 15ax, the cross-sectional area formula (π×γ×
15#I) to 7.5 times. Considering that the superconducting filament 1 has an extremely fine cross-sectional diameter of several tens of micrometers, and is multi-core with hundreds of filaments,
It is clear that the reliability of the connection increases by increasing the cross-sectional area of the connection.
ちなみに、端面の加工部分の長さはツイスト加工ピッチ
の１／２の長さもしくはそれ以下の長さに限定する必要
があるが、これは加工部の長さがツイスト加工ピッチの
１７２の長さを超えると、１本の超電導体フィラメント
１の線材の接続部が数箇所に増えるため電気的な接続抵
抗も大きくなり、超電導線材としての特性を損なうとい
う理由による。By the way, it is necessary to limit the length of the processed part of the end face to 1/2 length of the twist processing pitch or less, but this is because the length of the processed part is 172 length of the twist processing pitch. This is because, if it exceeds, the number of wire connections for one superconducting filament 1 increases to several locations, resulting in an increase in electrical connection resistance and impairing the properties of the superconducting wire.
次に、本発明の他の実施例に係る超電導線の接続方法を
第５図を参照しながら説明する。Next, a method for connecting superconducting wires according to another embodiment of the present invention will be described with reference to FIG.
まず、第５図に示すように超ｍ１１１ｉ ａどうしを重
ね合わせる部分の上・下あるいは周辺に金属マトリック
スと同系統の材料である銅または銅合金からなるスペー
サ１９を付加する。このスペーサ１９としては薄板ある
いは超電導線３の形状に応じた円筒材料を半割りに加工
したもの等を用いる。First, as shown in FIG. 5, a spacer 19 made of copper or a copper alloy, which is a material similar to that of the metal matrix, is added above, below, or around the portion where the ultra-m111i a overlap. As the spacer 19, a thin plate or a cylindrical material cut in half according to the shape of the superconducting wire 3 is used.
なお、板厚は限定はしないが、超電導線３の板厚あるい
は径の約１０％程度の厚さが望ましい。このように、ス
・ペーサ１９をイー１加した状態で第３図に示す接続装
置で超電導線３どうしを接続することにより、接続後の
変形の少ない超電導線を得ることができる。Although the plate thickness is not limited, it is desirable that the thickness be about 10% of the plate thickness or diameter of the superconducting wire 3. In this way, by connecting the superconducting wires 3 to each other using the connecting device shown in FIG. 3 with the spacer 19 added by 1, it is possible to obtain a superconducting wire with little deformation after connection.
第５図に示すような接続方法を採った場合でも、良好な
接続条件での接合が可能であるが、このような接続条件
で行なった接続部の外観形状を模式的に示すと、第６図
に示すにうになる。Even when the connection method shown in Fig. 5 is used, it is possible to join under good connection conditions. The result will be as shown in the figure.
なお、第５図に示したスペーサ１９の長さ２０と超電導
線３の接続部の長さ１１との関係は、接続部の長さ１１
Ｊ：りもスペーサ１９の長さ２０を長くするようにする
のがよい。また、第３図に示した加工治具１７および加
圧する長さは接続部の長さ１１よりも長くなるにうにす
る必要がある。The relationship between the length 20 of the spacer 19 and the length 11 of the connecting portion of the superconducting wire 3 shown in FIG.
J: It is preferable to make the length 20 of the rim spacer 19 longer. Further, the processing jig 17 shown in FIG. 3 and the length to be pressurized must be longer than the length 11 of the connecting portion.
第７図は第３図に示した接続装置における接続温度と通
電電流の関係の特性図を示すものである。FIG. 7 shows a characteristic diagram of the relationship between the connection temperature and the conducting current in the connection device shown in FIG. 3.
同図に示すように接続温度が低ければ低い程、通電電流
は増加する。このため良好な接続条件を作り出すために
は、固定治具１５内のカートリッジヒータ１４は確実に
温度コントロールされる必要がある。As shown in the figure, the lower the connection temperature, the more the current flowing. Therefore, in order to create good connection conditions, it is necessary to reliably control the temperature of the cartridge heater 14 within the fixture 15.
上記各実施例における作用、効果を列挙すれば次の通り
である。The functions and effects of each of the above embodiments are listed below.
（１） 接続しようとする接続部の面積を任意に変え
ることができるために、超電導線の形状あるいは材質変
化についても基本的な接続条件を参考にすることができ
るため、その接続条件の設定が容易である。(1) Since the area of the connection part to be connected can be changed arbitrarily, the basic connection conditions can be used as a reference when changing the shape or material of the superconducting wire, making it easy to set the connection conditions. It's easy.
（２） 接続部の形状が任意の角度に加工されるため
、とくに極細な金属フィラメントの断面積が数倍になる
ことから接続が容易になり、接続部の機械的強度と電気
的な特性である信頼性が高まる。(2) Since the shape of the connection part can be processed at any angle, the cross-sectional area of the ultra-fine metal filament is increased several times, making the connection easier, and improving the mechanical strength and electrical properties of the connection part. Certain reliability increases.
（３） スペーサを付加することにより接続後の外観
形状が接続する前の形状と同一になり、手直し等の仕上
げ加工がなくなる。また、形状の変化がないことから、
現場作業にＪ：るフィル巻きの巻き取り機への設定も容
易でかつ巻き取り機のデンションにも十分耐えることが
できるため、作業性が大幅に改善される。(3) By adding a spacer, the external shape after connection becomes the same as the shape before connection, eliminating the need for finishing work such as rework. In addition, since there is no change in shape,
Since it is easy to set up the fill winding machine for field work and can sufficiently withstand the tension of the winding machine, work efficiency is greatly improved.
（４） 機械的あるいは電気的特性についても母材の
特性を損なわないようにすることができるため、作業の
合理化や製品の品質向上にも効果がある。(4) Since it is possible to prevent the mechanical or electrical properties of the base material from being impaired, it is also effective in streamlining work and improving product quality.
（５） 超電導体フィラメント１どうじの接続が可能
であり、その接続率としては８５％以上の高い値が得ら
れる。(5) It is possible to connect one superconductor filament to another, and a high connection rate of 85% or more can be obtained.
（６） 接続温度を５００℃以下に設定すると、第７
図の特性図において、接続部ａと通電電流の実験結果が
示すように、超電導線の祠質の変化がなく設計仕様を満
足する極めて小さな接続抵抗を維持できるため、超電導
特性の優れた接続部が得られる。(6) If the connection temperature is set below 500℃, the seventh
In the characteristic diagram shown in the figure, as shown by the experimental results for the connection point a and the current flowing, the connection resistance of the superconducting wire is maintained at an extremely low level that satisfies the design specifications without any change in the abrasiveness of the superconducting wire. is obtained.
なお、本発明の実施は一ヒ述のような接続方法に限定さ
れるものではなく、例えば第８図に示すにうに場所によ
り異なる傾斜面を有するそぎ継ぎ而２２の形状に加工し
た後、上・下方向のみの加圧力だけではなく、軸方向に
も矢印２１で示すような加圧力を加えて接続する方法と
してもよく、先に挙げた各実施例と同様の効果がある。Note that the implementation of the present invention is not limited to the connection method as described above; for example, as shown in FIG. - It is also possible to connect by applying pressure not only in the downward direction but also in the axial direction as shown by the arrow 21, and the same effect as in each of the above-mentioned embodiments can be obtained.
以上述べたように、本発明によれば、超電導体フィラメ
ントと安定化材から構成される超電導線を接続するに当
り、超電導線の接続しようとする双方の接続部を予めそ
ぎ継ぎが可能なスカーフ継手形状になるように斜めに加
工し、そのそぎ継ぎ面を重ね合わせて固相接合するよう
にしたので、超電導線の仕様およθ設計仕様などにおい
て用途に応じた優れた接続特性を容易に得られる超電導
線の接続方法を実現することができる。As described above, according to the present invention, when connecting superconducting wires composed of a superconducting filament and a stabilizing material, the scarf allows the connecting portions of both superconducting wires to be spliced in advance. The joint is machined diagonally to form a joint shape, and the joint surfaces are overlapped and solid phase bonded, making it easy to achieve excellent connection characteristics according to the application, such as superconducting wire specifications and θ design specifications. A method for connecting the obtained superconducting wire can be realized.
第１図（ａ）、（ｂ）は本発明の一実施例に係る超電導
線の接続方法において、超電導線の接続部の加工仕上げ
状態を９０°異なる方向から見た側面図、
第２図は第１図の超電導線の接続状態を示す側面図、
第３図は本発明を実施するに当り用いられる接続装置の
断面図、
第４図は第３図の装置により接続された超電導線の側面
図、
第５図は本発明の伯の実施例に係る超電導線の接続方法
における超電導線の組合せの状態を示す斜視図、
第６図は第５図に示す状態から接続された超電導線を示
す側面図、
第７図は本実施例の接続温度の条件範囲を明確にするた
めの接続温度と通電電流の特性を示す特性図、
第８図は本発明のさらに伯の実施例に係る超電導線の接
続方法を示す側面図、
第９図（ａ）、（ｂ）、（ｃ）は超電導線の種々の断面
形状を示す横断面図、
第１０図、第１１図、第１２図は従来技術の超電導線の
接続方法を説明するための側面図、第１３図は超電導特
性を説明するための電流−電圧特性図である。
１・・・超電導体フィラメント、２・・・安定化材、３
・・・超電導線、４・・・はんだ、６・・・クランプ冶
具、８・・・ばり、１２・・・そぎ継ぎ面、１３・・・
ヂャンバー、１４・・・カートリッジヒータ、１５・・
・固定冶具、１６・・・油圧シリンダー、１７・・・加
圧治具、１８・・・排気装置、１９・・・スペーサ、２
２・・・そぎ継ぎ面。
出願人代理人 佐 藤 −雄
６１ 圀
６２ 圀
も３ 図
汽５ 囚
糺６ 図
一＋？＃渚及（０Ｃ）
色７ 図
も ８ 閃
（０） （ｂ）へ１１
園
島 １２ 図
昆ＩＯ口
も１３ 図FIGS. 1(a) and (b) are side views of the processing and finishing state of the superconducting wire connection portion viewed from 90° different directions in a superconducting wire connection method according to an embodiment of the present invention; FIG. FIG. 3 is a sectional view of the connecting device used in carrying out the present invention; FIG. 4 is a side view of the superconducting wires connected by the device shown in FIG. 3. Figure 5 is a perspective view showing the state of the combination of superconducting wires in the method for connecting superconducting wires according to the embodiment of the present invention, and FIG. 6 shows the superconducting wires connected from the state shown in FIG. 5. A side view, FIG. 7 is a characteristic diagram showing the characteristics of connection temperature and current to clarify the condition range of connection temperature in this embodiment, and FIG. 8 is a superconducting wire according to a further embodiment of the present invention. Figures 9(a), (b), and (c) are cross-sectional views showing various cross-sectional shapes of superconducting wires; Figures 10, 11, and 12 are conventional techniques. FIG. 13 is a side view for explaining a method of connecting superconducting wires, and FIG. 13 is a current-voltage characteristic diagram for explaining superconducting characteristics. 1... Superconductor filament, 2... Stabilizing material, 3
...Superconducting wire, 4...Solder, 6...Clamp jig, 8...Burr, 12...Sewn surface, 13...
Chamber, 14...Cartridge heater, 15...
・Fixing jig, 16... Hydraulic cylinder, 17... Pressure jig, 18... Exhaust device, 19... Spacer, 2
2...Sawit seam surface. Applicant's agent Sato -Yu 61 Kuni 62 Kuni Mo 3 Figure 5 Prisoner 6 Figure 1+? # Nagisa (0C) Color 7 Figure also 8 Flash (0) (b) 11
Sonojima 12 fig. Kon IO mouth 13 fig.
Claims (1)
導線の接続されるべき双方の接続部をそぎ継ぎが可能な
形状に予め加工し、しかる後に両そぎ継ぎ面を重ね合わ
せ、その重ね合わせ部分を加圧して接続することを特徴
とする超電導線の接続方法。 ２、重ね合わせるそぎ継ぎ面の軸方向長さを超電導線の
ツイスト加工されたツイストピッチの１／２以下の長さ
とすることを特徴とする特許請求の範囲第１項に記載の
超電導線の接続方法。 ３、そぎ継ぎ部の上部もしくはその周辺を予めスペーサ
で覆い、そのスペーサの長さおよび覆った長さを重ね合
わせた長さと同等もしくはそれよりも長くすることを特
徴とする特許請求の範囲第１項に記載の超電導線の接続
方法。 ４、重ね合わせ部分の加圧に当り、この部分を真空中あ
るいは不活性ガス中におき、さらに接続部を加熱するこ
とを特徴とする特許請求の範囲第１項、第２項または第
３項に記載の超電導線の接続方法。[Claims] 1. Both the connecting parts of the superconducting wire composed of the superconducting filament and the stabilizing material to be connected are processed in advance into a shape that allows the splicing, and then both spliced surfaces are overlapped. A method for connecting superconducting wires, which is characterized in that the superconducting wires are joined together and the overlapping portions are pressed and connected. 2. The superconducting wire connection according to claim 1, characterized in that the axial length of the overlapping seam surfaces is equal to or less than 1/2 of the twist pitch of the superconducting wire. Method. 3. Claim 1, characterized in that the upper part of the seam part or its surroundings is covered in advance with a spacer, and the length of the spacer and the covered length are equal to or longer than the overlapped length. How to connect superconducting wires as described in section. 4. When pressurizing the overlapped portion, this portion is placed in a vacuum or an inert gas, and the connection portion is further heated, as claimed in claim 1, 2, or 3. The method for connecting superconducting wires described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26458385A JPS62123669A (en) | 1985-11-25 | 1985-11-25 | Joint of superconducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26458385A JPS62123669A (en) | 1985-11-25 | 1985-11-25 | Joint of superconducting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62123669A true JPS62123669A (en) | 1987-06-04 |
Family
ID=17405307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26458385A Pending JPS62123669A (en) | 1985-11-25 | 1985-11-25 | Joint of superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62123669A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304608A (en) * | 1988-06-01 | 1989-12-08 | Mitsubishi Electric Corp | Superconductive transmission line |
| US6194226B1 (en) | 1991-02-25 | 2001-02-27 | Sumitomo Electric Industries, Ltd. | Junction between wires employing oxide superconductors and joining method therefor |
| EP1158543A1 (en) * | 1999-11-04 | 2001-11-28 | Sumitomo Electric Industries, Ltd. | Method of manufacturing oxide superconducting wire, oxide superconducting wire, superconducting coil and superconducting apparatus |
-
1985
- 1985-11-25 JP JP26458385A patent/JPS62123669A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01304608A (en) * | 1988-06-01 | 1989-12-08 | Mitsubishi Electric Corp | Superconductive transmission line |
| US6194226B1 (en) | 1991-02-25 | 2001-02-27 | Sumitomo Electric Industries, Ltd. | Junction between wires employing oxide superconductors and joining method therefor |
| EP1158543A1 (en) * | 1999-11-04 | 2001-11-28 | Sumitomo Electric Industries, Ltd. | Method of manufacturing oxide superconducting wire, oxide superconducting wire, superconducting coil and superconducting apparatus |
| EP1158543A4 (en) * | 1999-11-04 | 2007-07-18 | Sumitomo Electric Industries | Method of manufacturing oxide superconducting wire, oxide superconducting wire, superconducting coil and superconducting apparatus |
| US7468207B2 (en) | 1999-11-04 | 2008-12-23 | Sumitomo Electric Industries, Ltd. | Superconducting coil and superconducting apparatus |
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