JPH0353480A - Method for fixing of superconductive wire connection part - Google Patents
Method for fixing of superconductive wire connection partInfo
- Publication number
- JPH0353480A JPH0353480A JP18742989A JP18742989A JPH0353480A JP H0353480 A JPH0353480 A JP H0353480A JP 18742989 A JP18742989 A JP 18742989A JP 18742989 A JP18742989 A JP 18742989A JP H0353480 A JPH0353480 A JP H0353480A
- Authority
- JP
- Japan
- Prior art keywords
- solder
- connection part
- furnace
- vacuum
- fixing
- 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
- 238000000034 method Methods 0.000 title claims description 13
- 229910000679 solder Inorganic materials 0.000 claims abstract description 50
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 239000011261 inert gas Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 230000035699 permeability Effects 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
二の発明は、超電導線接続部の固定方法、特に超電導線
接続部をはんだにより補強筒内に固定するための超電導
線接続部の固定方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The second invention is a method for fixing a superconducting wire joint, particularly a method for fixing a superconducting wire joint for fixing the superconducting wire joint within a reinforcing cylinder by soldering. It is related to.
［従来の技術コ
第４図は従来の超電導線接続部の固定方法の一例の一工
程を示す超電導線接続部の断面図てある。[Prior art] Fig. 4 is a cross-sectional view of a superconducting wire connection section showing one step of an example of a conventional method for fixing a superconducting wire connection section.
図において、符号（＋）は育底円筒状の加熱炉、（２）
は加熟炉（１）の外用部に設けられているヒータである
。In the figure, the sign (+) is a cylindrical heating furnace, (2)
is a heater provided in the external part of the ripening furnace (1).
（３）は有底円筒状の補強銅筒、（４）は補強銅筒（３
）内に挿入されている超電導線接続部（以下、接続部と
略称する。）であり、この接続部（４）は、２木のｔｆ
ｉ電導＆ｉ（５）の先端部から安定（ヒ材を除去するこ
とにより多数のフィラメントを露出させ、これらのフィ
ラメントを例えばスポット溶接により接続してなってい
る。（６）は補強鋼筒（３）内に入れられているはんだ
であり、このはんだ（６）は多数の粒状になっている。(3) is a cylindrical reinforced copper tube with a bottom, (4) is a reinforced copper tube (3
) is a superconducting wire connection part (hereinafter abbreviated as connection part) inserted in the tf of two trees.
A large number of filaments are exposed by removing the stable material from the tip of the i conductive & i (5), and these filaments are connected, for example, by spot welding. (6) is a reinforced steel tube (3). ), and this solder (6) is in the form of many particles.
従来の超電導線接続部の固定方法で｛よ、まず接続部（
４）及びはんだ（６｝を補強銅筒（３）内に入れた後、
これらを加熱炉（Ｌ）内に入れて加熱し、はんだ（６）
を溶融させる。この後、はんだ（６）を凝固させること
により、第５図及び第６［］に示すように、接続部（
４ ） ４１補強銅筒（３）内に固定される。In the conventional method of fixing the superconducting wire connection part, the connection part (
After putting 4) and solder (6} into the reinforcing copper tube (3),
Place these in the heating furnace (L) and heat them to solder (6).
melt. After that, by solidifying the solder (6), the connection part (
4) It is fixed inside the 41 reinforced copper tube (3).
［発明が解決しようとする課題コ
上記のような従来の接続部（４）の固定方法では、スポ
ット溶接により融合されなかった明々のフィラメント間
や、粒状のはんだ（６）の間など、ｔ＋！ｉ強１；Ｉ筒
（３）内に予め隙間があるため、加熟熔融したはんだ（
６）がよく浸透Ｑ〜ず、はんだ（６）の凝固後に補強銅
筒（３）内に、第５図及び第６図に示すような空隙（７
）が残ってしまう。このため、この空隙〈７〉内でフィ
ラメンＩ・が微小に動いてしまうことがあり、接続部（
４）の臨界電流が安定しないという問題点があり、この
ような問題点を解決しなければならないという課題を有
していた。[Problems to be Solved by the Invention] In the conventional fixing method of the connection part (4) as described above, t+! i strong 1: Because there is a gap in the I cylinder (3), the aged and melted solder (
6) penetrates well, and after solidifying the solder (6), voids (7) are formed in the reinforcing copper tube (3) as shown in Figures 5 and 6.
) will remain. For this reason, the filament I may move slightly within this gap <7>, and the connection portion (
There is a problem in 4) that the critical current is not stable, and it is necessary to solve this problem.
この発明（よ、上記のような課題を解決するためになさ
れたもので、１８融した（ｉんだの浸透性を改静てき、
凝固後のはんだ部に空隙が残るのを防止でき、これによ
りｉｉｉ電導線接続部の臨界電流を高い値で安定させる
ことができる超竜導線接続部の固定方法を得ることを目
的とする。This invention was made to solve the above-mentioned problems, and it improved the permeability of the molten metal.
It is an object of the present invention to provide a method for fixing a super-conducting wire connection part that can prevent voids from remaining in the solder part after solidification, thereby stabilizing the critical current of the conductive wire connection part iii at a high value.
し課題を解決するための手段］
この発明に係る超電導線接続部の固定方法は、超電導線
接続部及びはんだを入れた補強筒内を真空にした後、は
んだを溶融させるとともに、この溶融したはんだを不活
性ガスにより加圧し、こグ）漫加圧した状態のままでは
んだを凝固させるものである。[Means for Solving the Problem] A method for fixing a superconducting wire joint according to the present invention is to evacuate the reinforcing cylinder containing the superconducting wire joint and solder, melt the solder, and remove the molten solder. The solder is pressurized with an inert gas, and the solder is solidified while the solder remains in the slightly pressurized state.
［作用］
この発明においては、補強筒内を真空にした後、はんだ
を溶融させるとともに、冫′ｆ′！融したはんだを不活
性ガスにより加圧することにより、溶融したはんだが補
強筒内の細部にまで浸透する。[Function] In this invention, after making the inside of the reinforcing cylinder a vacuum, the solder is melted and the solder'f'! By pressurizing the molten solder with an inert gas, the molten solder penetrates into the details inside the reinforcing cylinder.
［実施例］
以下、この発明をその一実施例を示す図に基づいて説明
する。[Example] Hereinafter, the present invention will be explained based on the drawings showing one example thereof.
第１図はこの発明の一実施到による超電導線｛２続部の
固定方法の一工程を示す超電導線接続部及びその固定装
置の構成図であり、第ｌ１ｒｌ３と同一又は相当部分に
は同一ｎ号を１すし、その説明を省略する。FIG. 1 is a block diagram of a superconducting wire connecting part and its fixing device showing one step of a method of fixing a superconducting wire {2 connected part according to one embodiment of the present invention. I will give the number 1 and omit its explanation.
図において、符号（ｌ１）は接続部（４）及ひはんだ（
６）を入れた状態の補強銅筒（３）が入れられている真
空加熱加圧炉であり、この真空加熱加圧炉（１１）の上
部には超電導線（５）を引き出すためのシール部（ ｌ
ｌａ）が設けられている。（１２）は真空加熱加圧炉（
１１）の外周部に設けられているヒータ、（１３）は真
空用バルブ（１４〉を介して真空加熱加圧炉（１１）に
接続されている真空ポンプ、（１５）は加圧用バルブ（
ｌ６）を介して真空加熱加圧炉（１ｌ）に接続されてい
るアルゴンガスボンベで、ちる。In the figure, the symbol (l1) indicates the connection part (4) and the solder (
This is a vacuum heating and pressurizing furnace in which a reinforcing copper tube (3) containing a superconducting wire (5) is placed, and a sealing section is provided in the upper part of this vacuum heating and pressurizing furnace (11) to draw out the superconducting wire (5). (l
la) is provided. (12) is a vacuum heating and pressure furnace (
(13) is a vacuum pump connected to the vacuum heating and pressurizing furnace (11) via the vacuum valve (14), and (15) is the pressurizing valve (11).
Chill with an argon gas cylinder connected to a vacuum heating and pressurizing furnace (1l) via a 1l6).
次に、この実施例の接続部（４）の固定方法について説
明する。まず、従来例と同様に接続部（４）及びはんだ
〈６）を補強銅筒〈３）内に入れた後、これらを真空加
熱加圧ｐ（ｉｉ＞内にセットする。次に、真空用バルブ
〈１４〉を開き、真空ポンプ〈１３）により真空加熱加
圧炉（１１〉内を真空状態にする。この後、ヒータ（１
２）により真空加熱加圧炉（１１）を加熱し、はんだ（
６）を完全に溶融させる。Next, a method of fixing the connecting portion (4) of this embodiment will be explained. First, as in the conventional example, the connecting part (4) and the solder <6) are placed inside the reinforcing copper tube <3), and then these are set in the vacuum heating and pressurizing p(ii>. Open the valve <14> and bring the inside of the vacuum heating and pressurizing furnace (11) into a vacuum state using the vacuum pump <13>.After this, the heater (1
2) to heat the vacuum heating and pressurizing furnace (11) to melt the solder (
6) Completely melt.
はんだ（６）が溶融したら、真空用バルブ〈１４）を閉
じ、加圧用バルブ（１６）を開き、アルゴンカスボンベ
〈１５〉内の不活性ガスであるアルゴンガスを真空加熱
加圧炉〈１１）内に圧入する。これによって、溶融した
状態のはんた（６）が、アルゴンガスにより補強銅筒（
３）内で加圧される。このため、はんだく６）は、スポ
ット溶接により融合されなかった個々のフィラメント・
の間の隙間や、補強銅筒（３）内の隅々にまで、空隙を
残す事なく浸透して行く。Once the solder (6) is melted, close the vacuum valve (14), open the pressure valve (16), and transfer the argon gas, which is an inert gas, from the argon gas cylinder (15) to the vacuum heating and pressure furnace (11). Press fit inside. As a result, the molten solder (6) is heated to the reinforced copper tube (
3) Pressurized inside. For this reason, solder 6) separates the individual filaments that were not fused by spot welding.
It penetrates into the gaps between the holes and every corner of the reinforced copper tube (3) without leaving any gaps.
真空加熱加圧炉（１１）内が所定の圧力に達したら、加
圧用バルブ（１６）を閉じ、ヒータ（１２〉の電源を切
って、加圧された状態のまま、はんだ（６）を凝固させ
る。When the inside of the vacuum heating and pressurizing furnace (11) reaches a predetermined pressure, close the pressurizing valve (16), turn off the power to the heater (12>), and solidify the solder (6) while maintaining the pressurized state. let
このような固定方法によれば、第２図に示すように、は
んだ（６）が隅々にまで浸透し加圧された状態で凝固す
るので、第２国及ひ第３図に示すように、ひげやブロー
ホール等による空隙は残八ず、このため接続部（４）は
、フィラメントが部分的に動いたりすることもなく、確
実に補強銅筒（３）内に固定され、これにより臨界電流
が高い値で安定する。According to this fixing method, as shown in Figure 2, the solder (6) penetrates into every corner and solidifies under pressure. There are no gaps left due to whiskers or blowholes, and therefore the filament at the connection part (4) is securely fixed within the reinforcing copper tube (3) without any partial movement of the filament. The current stabilizes at a high value.
また、真空中ではんだ１１けが行われるので、はんだ（
６）の溶着性自体も改善される。In addition, since soldering is performed in a vacuum, soldering (
6) The weldability itself is also improved.
さらに、溶融した状四〇はんだ（６）を、不活性ガスで
あるアルゴンガスにより加圧するようにしたので、はん
だ（６）の酸（ヒを防止することができる。Furthermore, since the molten solder (6) is pressurized with argon gas, which is an inert gas, it is possible to prevent the solder (6) from becoming acidic.
なれ、上記実胤例では補強筒として補強銅筒（３）を示
したが、はんだ（６）と容易に溶着する材料であれば、
例えばステンレス鋼材など、他の材ｎからなるものであ
ってもよい。また、補強簡の形状も１丁底の筒状のもの
であればよく、円筒に限定されない。In the above example, the reinforcing copper tube (3) was shown as the reinforcing tube, but any material that easily welds with the solder (6) may be used.
For example, it may be made of other materials such as stainless steel. Furthermore, the shape of the reinforcing strip is not limited to a cylinder, as long as it has a single-bottomed cylindrical shape.
また、上記実絶例では加圧用の不活性ガスとしてアルゴ
ンガスを示したが、例えばヘリウムガスｌど、池の不活
性ガスであってもよい。Furthermore, although argon gas is shown as the inert gas for pressurization in the above-mentioned example, other inert gases such as helium gas may also be used.
さらに、上記実施例でけヒータ（１２）により加熟を行
ったが、加熱手段ははんだ（６）を溶融させることがで
きれば良く、特に限定されるもので姐ない。Furthermore, although the heater (12) was used for curing in the above embodiment, the heating means is not particularly limited as long as it can melt the solder (6).
さらにまた、上記実施例ではスポット溶接により接続さ
れた接続部（４）を示したが、例えば圧着 圧接及びレ
ーヂ溶接など、（也の方法により接続された超電導線接
続部にもこの発明は適用できる。Furthermore, although the above embodiment shows a connection part (4) connected by spot welding, the present invention can also be applied to a superconducting wire connection part connected by (2) methods such as crimping, pressure welding, and radius welding. .
［発明の効果］
以上説明したように、この発明の超電導線接続部の固定
方法は、超電導線接続部及びはんだを入れた補強筒内を
真空にした後、はんだを７′Ｂ融させるとともに、溶融
したはんだを不活性ガスにより加圧し、この後加圧した
状態のままではんだを凝固させるようにしたので、溶融
したはんだの浸透性を改善でき、凝固後のはんだ部に空
隙が残るのを防止でき、これにより超電導線接続部の臨
界電流を高い値で安定させることができるなとの効眼が
ある。[Effects of the Invention] As explained above, the method for fixing a superconducting wire joint according to the present invention involves evacuating the reinforcing cylinder containing the superconducting wire joint and solder, and then melting the solder by 7'B. The molten solder is pressurized with an inert gas, and then the solder is solidified in the pressurized state, which improves the permeability of the molten solder and prevents voids from remaining in the solder area after solidification. It is believed that this can be prevented and that the critical current at the superconducting wire connection section can be stabilized at a high value.
第■図はこ力発明の一実施例による超電４線接続部の固
定方法の一工程を示す超電導線接続部及びその固定装置
の横戒図、第２図は第１図の固定後の状態を示す超電導
線接続部の断面図、第３図は第２図のＩＩＩ−１線に沿
う矢視断面図、第４図ζま従来の超電導線接続部の固定
方法の一例の一工程を示す超電導線接続部の断面図、第
５図は第４図の固定１表の状態を示す超電導線接続部の
断面図、第６図は第５図の１４−■線に沿う矢視断面図
である。
図において、（３），は補強銅筒、〈４）は超電導線接
続部、（６）ははんだである。
なＪ３、各図中、同一符号は同一又は相当部分を示す。Figure 2 is a horizontal diagram of a superconducting wire connection part and its fixing device showing one step of the method of fixing a superconducting 4-wire connection part according to an embodiment of the present invention, and Figure 2 is a horizontal view of the superconducting wire connection part and its fixing device after the fixation shown in Figure 1. FIG. 3 is a sectional view taken along the line III-1 in FIG. 2, and FIG. FIG. 5 is a sectional view of the superconducting wire connection section showing the state shown in FIG. 4, and FIG. 6 is a sectional view taken along line 14-■ in FIG. It is. In the figure, (3) is a reinforced copper cylinder, (4) is a superconducting wire connection part, and (6) is a solder. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
に前記補強筒内を真空にし、この後前記はんだを溶融さ
せるとともに、この溶融したはんだを不活性ガスにより
加圧し、この後加圧した状態のままで前記はんだを凝固
させることを特徴とする超電導線接続部の固定方法。A superconducting wire connection part and solder are placed in a bottomed reinforcing cylinder, and then the inside of the reinforcing cylinder is evacuated.Then, the solder is melted, and the molten solder is pressurized with an inert gas. A method for fixing a superconducting wire connection part, characterized by solidifying the solder in a pressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18742989A JPH0353480A (en) | 1989-07-21 | 1989-07-21 | Method for fixing of superconductive wire connection part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18742989A JPH0353480A (en) | 1989-07-21 | 1989-07-21 | Method for fixing of superconductive wire connection part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353480A true JPH0353480A (en) | 1991-03-07 |
Family
ID=16205903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18742989A Pending JPH0353480A (en) | 1989-07-21 | 1989-07-21 | Method for fixing of superconductive wire connection part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06196241A (en) * | 1992-12-25 | 1994-07-15 | Mitsubishi Electric Corp | Connecting method for superconducting wire and superconducting wire with connection section |
-
1989
- 1989-07-21 JP JP18742989A patent/JPH0353480A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06196241A (en) * | 1992-12-25 | 1994-07-15 | Mitsubishi Electric Corp | Connecting method for superconducting wire and superconducting wire with connection section |
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