JPS60160511A - Method of producing nb3sn superconductive wire - Google Patents
Method of producing nb3sn superconductive wireInfo
- Publication number
- JPS60160511A JPS60160511A JP1534984A JP1534984A JPS60160511A JP S60160511 A JPS60160511 A JP S60160511A JP 1534984 A JP1534984 A JP 1534984A JP 1534984 A JP1534984 A JP 1534984A JP S60160511 A JPS60160511 A JP S60160511A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- annealing
- manufacturing
- wire
- superconducting wire
- 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 description 10
- 238000000137 annealing Methods 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 2
- 229910000657 niobium-tin Inorganic materials 0.000 description 6
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacturing Of Electric Cables (AREA)
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製造方法、特にＮｂ３Ｓｎ超電心線
を製造する際の断面減少加工中に施されるＣｕ−３ｎ系
合金の熱処理方法に関する。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a method for manufacturing a superconducting wire, and particularly to a method for heat treating a Cu-3n alloy during cross-section reduction processing when manufacturing a Nb3Sn superconducting wire. .
［発明の技術的背景とその問題点］
従来Ｎｂ３Ｓｎ超電導線の製造方法として、ブロンズ（
Ｃ；ｕ−８口合金）を用いるものが知られている。[Technical background of the invention and its problems] Conventionally, as a manufacturing method of Nb3Sn superconducting wire, bronze (
C; U-8 alloy) is known.
この方法においては、ＮｂあるいはＮｂバイブとこれと
接触するＣｕ−３ｎ系合金とからなる複合体に断面減少
加工が施され、最終的にＮｂ３Ｓｎ生成のための熱処理
を施すことが行われているが、Ｃｕ−８ｎ系合金（例え
ばＣＬＩ−１３ｗｔ％Ｓｎ合金）は５０〜６０％の冷間
加工を施すと硬化するため、最終線径まぐ加工するには
３０〜４０回の焼鈍を繰り返す必要がある。In this method, a composite consisting of Nb or a Nb vibe and a Cu-3n alloy in contact with it is processed to reduce its cross section, and finally heat-treated to produce Nb3Sn. , Cu-8n alloy (for example, CLI-13wt%Sn alloy) hardens when subjected to 50 to 60% cold working, so it is necessary to repeat annealing 30 to 40 times to form the final wire diameter. .
従って、生産性の点からは短時間で焼鈍する必要がある
が、線径が、例えば１３ｎφ以上と大きい場合は、酸化
し易いＮ’ｂを含んでいるため、端末から酸素を吸収し
て純化する欠点がある。Therefore, from the viewpoint of productivity, it is necessary to anneal in a short time, but if the wire diameter is large, for example 13nφ or more, it contains N'b, which is easily oxidized, so it absorbs oxygen from the terminal and becomes purified. There are drawbacks to doing so.
この転化を防止する最良の方法は真空焼鈍であるが、こ
れに適する条材用の炉は大がかりなものとなり、また焼
鈍時間も１０数詩間を要するというＮ点を有する。The best method for preventing this conversion is vacuum annealing, but the furnace for strips suitable for this is large-scale, and the annealing time is also 10 or so long.
以上の理由から焼鈍は、通常ローラーハース炉と称する
条材用の炉で行なう。For the above reasons, annealing is usually performed in a furnace for strip materials called a roller hearth furnace.
しかし、これ等の炉は焼鈍に数時間を要する。However, these furnaces require several hours for annealing.
また、その雰囲気を保持するのに炉の出入口は水蒸気シ
ールされているのが普通であり、雰囲気中には若干の酸
素および水素を含有するため複合材の両端末を溶接等に
より密封せねばならないという欠点を有づる。Additionally, to maintain this atmosphere, the entrance and exit of the furnace are usually sealed with water vapor, and since the atmosphere contains some oxygen and hydrogen, both ends of the composite must be sealed by welding, etc. It has a drawback.
［発明の目的］
本発明は以上の難点を解消するためになされたもので、
（：ｕ−３ｎ系合金を１つの構成要素とする複合体から
Ｎｂ３Ｓｎ超電導線を製造する際に短時間で焼鈍するこ
とのできる方法を提供することを目的とづ”る。[Object of the invention] The present invention has been made to solve the above-mentioned difficulties.
(The purpose of this invention is to provide a method that can be annealed in a short time when manufacturing a Nb3Sn superconducting wire from a composite having a U-3N alloy as one component.)
［発明の概要］
すなわち本発明のＮｂ３Ｓｎ超電導線の製造方法は、Ｃ
ＬＩ−３ｎ系合金とＮｂあるいはＮｂ基合金とからなる
複合線に断面減少加工おＪ、び中間焼鈍を繰り返して施
し、次いでＮｂ３Ｓｎ生成の熱処理を施すことにより超
電導線を製造する方法におい゛Ｃ１前記中間焼鈍は円筒
状の真空容器内に前記複合線を収容し、前記真空容器と
相対的に移動する高周波コイルによる加熱によって行な
われることを特徴としＣいる。[Summary of the invention] That is, the method for manufacturing a Nb3Sn superconducting wire of the present invention
In a method of manufacturing a superconducting wire by repeatedly subjecting a composite wire made of LI-3n alloy and Nb or Nb-based alloy to cross-section reduction processing and intermediate annealing, and then heat-treating to generate Nb3Sn, The intermediate annealing is characterized in that the composite wire is housed in a cylindrical vacuum vessel and heated by a high-frequency coil that moves relative to the vacuum vessel.
［発明の実施例］ 以下本発明の一実施例についＣ説明する。[Embodiments of the invention] An embodiment of the present invention will be described below.
第１図は焼鈍装置の概略を示したもので、外径２００龍
φ、内径１９０ｍ１φ、長さ８５００龍のステンレス管
からなる真空容器１が周波数３ｋＨｚ１出力２０ｋＷの
高周波コイル２内をガイドローラ３によって移動する禍
造を有しでいる。真空容器１内には、Ｑｕ−３ｎ系合金
とＮｂとからなる複合材４が収容され、その内部はバル
ブ５を介して真空ポンプく図示せず）により真空状態に
保持される。Fig. 1 shows the outline of the annealing apparatus. A vacuum vessel 1 made of a stainless steel tube with an outer diameter of 200 mm, an inner diameter of 190 m, and a length of 8,500 mm is moved inside a high-frequency coil 2 with a frequency of 3 kHz and an output of 20 kW by guide rollers 3. It has a moving disaster. A composite material 4 made of a Qu-3n alloy and Nb is housed in the vacuum container 1, and the interior thereof is maintained in a vacuum state via a valve 5 by a vacuum pump (not shown).
第２図は２０ｍｍφブロンズの焼鈍曲線を示したちのＣ
１加熱開始時（Ａ）には焼鈍に６分間程度要づるが、定
常状態（Ｂ）では１分間程度で焼鈍可能となる。従って
、２ｍの条材で１５分間、８ｍの条材でも３０分間以内
に焼鈍が終了する。真空容器は縦長であるが、内容積が
２４０ａ程度と非常に小さいため、小型の真空ポンプで
短時間で排気できる。真空度は１０ ’ ｕ ＨＱ程度
とずれば、前述のＮｂの酸化は防止できるので、通常の
ロータリーポンプで十分であり、この意味で操作は簡便
である。Figure 2 shows the annealing curve of 20mmφ bronze.
1. At the start of heating (A), approximately 6 minutes are required for annealing, but in a steady state (B), annealing is possible in approximately 1 minute. Therefore, annealing is completed within 15 minutes for a 2 m long strip, and within 30 minutes for an 8 m long strip. Although the vacuum container is vertically long, its internal volume is very small, about 240 mm, so it can be evacuated in a short time using a small vacuum pump. If the degree of vacuum is around 10' u HQ, the aforementioned oxidation of Nb can be prevented, so a normal rotary pump is sufficient, and in this sense, the operation is simple.
実施例
ＣＩＪ−１３ｗｔ％３ｎ合金中に３０１本のＮｂフィラ
メントを埋め込んだマトリックス比（ブロンズ断面積／
Ｎｂ断面積）２．５の複合線を伸線加工した。このとき
、１パスの断面減少率は１６％で４パスの加工により外
径５０ｍｍφから外径３５龍φに加工した後、第１図に
示す装置を用いＣ焼鈍した。Example CIJ-13wt% 3n alloy with 301 Nb filaments embedded in matrix ratio (bronze cross-sectional area/
A composite wire with a Nb cross-sectional area of 2.5 was drawn. At this time, the cross-sectional area reduction rate per pass was 16%, and after machining from an outer diameter of 50 mmφ to an outer diameter of 35 mmφ in 4 passes, C annealing was performed using the apparatus shown in FIG.
さらに同様の工程を３回繰り返しく外径１２゜５１ｍφ
の硬材を１ｑだ。以上の工程は従来ローラーハース炉で
約４日間を要していたが、水沫の場合約４時間で達成ぐ
ぎた。Repeat the same process three more times.Outer diameter: 12゜51mφ
1q of hardwood. The above process conventionally took about 4 days using a roller hearth furnace, but it was completed in about 4 hours using water droplets.
［発明の効果］
以上の実施例から明らかなように、本発明によれば、Ｃ
ｕ−８ｎ系合金を１つの構成要素とする複合体からＮｂ
３Ｓｎ超電導線を製造する際に、短時間で焼鈍を行なう
ことができる。[Effect of the invention] As is clear from the above examples, according to the present invention, C
Nb from a composite containing a u-8n alloy as one component
When manufacturing a 3Sn superconducting wire, annealing can be performed in a short time.
第１図は本発明の方法に使用される焼鈍装置の一実施例
を示す概略断面図、第２図はその装置による焼鈍曲線の
一実施例図である。
１・・・・・・・・・・・・真空容器
２・・・・・・・・・・・・高周波コイル４・・・・・
・・・・・・・複合材
５・・・・・・・・・・・・バルブ
代理人弁理士 須 山 佐 −
（ほか１名）
第１図
２
０１ ２３４５６７
（ｍｉｒ＋）
第１頁の続き
０発 明 者 神 定 良 昌 川崎市川崎区小田伺社
内
０発 明 者 熊 野 智 幸 川崎市川崎区小田伺社
内FIG. 1 is a schematic sectional view showing an embodiment of an annealing apparatus used in the method of the present invention, and FIG. 2 is an embodiment of an annealing curve using the apparatus. 1......Vacuum container 2......High frequency coil 4...
・・・・・・Composite material 5・・・・・・・・・ Valve agent Sa Suyama - (1 other person) Figure 1 2 01 234567 (mir+) Continued from page 1 0 authors Yoshimasa Kawasaki, Kawasaki-ku, Kawasaki-shi, Odaiki, Kawasaki City, Kawasaki-ku, Kawasaki-ku, Odaiki 0 authors: Kawasaki City, Kawasaki-ku, Odaiki, Kawasaki-shi, Kawasaki-ku, Odaiki
Claims (1)
Ｎ ｂ ｉ 合金とからなる複合線に断面減少加工およ
び中間焼鈍を繰り返し【簾し、次いでＮｂ ３ Ｓｎ生
成の熱処理を脆すことにより超電導線を製造する方法に
おいで、前記中間焼鈍は円筒状の真空容器内に前記複合
線を収容し、前記真空容器と相対的に移動する高周波コ
イルによる加熱によって行なわれることを特徴とするＮ
ｂ３Ｓｎ超電導線の製造方法。[Claims] 1) C1-sn alloy and Nb ai) Louis lit
In a method of manufacturing a superconducting wire by repeatedly subjecting a composite wire consisting of a Nb i alloy to cross-section reduction processing and intermediate annealing [blinding], and then embrittling a heat treatment to generate Nb 3 Sn, the intermediate annealing is performed using a cylindrical The heating is performed by housing the composite wire in a vacuum container and using a high-frequency coil that moves relative to the vacuum container.
b3Sn superconducting wire manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1534984A JPS60160511A (en) | 1984-01-31 | 1984-01-31 | Method of producing nb3sn superconductive wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1534984A JPS60160511A (en) | 1984-01-31 | 1984-01-31 | Method of producing nb3sn superconductive wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60160511A true JPS60160511A (en) | 1985-08-22 |
Family
ID=11886316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1534984A Pending JPS60160511A (en) | 1984-01-31 | 1984-01-31 | Method of producing nb3sn superconductive wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60160511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475466A2 (en) * | 1987-02-05 | 1992-03-18 | Sumitomo Electric Industries Limited | Process for manufacturing a superconducting elongated article of compound oxide-type ceramic |
-
1984
- 1984-01-31 JP JP1534984A patent/JPS60160511A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0475466A2 (en) * | 1987-02-05 | 1992-03-18 | Sumitomo Electric Industries Limited | Process for manufacturing a superconducting elongated article of compound oxide-type ceramic |
| US5981444A (en) * | 1987-02-05 | 1999-11-09 | Sumitomo Electric Industries, Ltd. | Process for manufacturing a superconducting wire of compound oxide-type ceramics |
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