JPS61264164A - Manufacture of superconductive wire containing nb3sn - Google Patents
Manufacture of superconductive wire containing nb3snInfo
- Publication number
- JPS61264164A JPS61264164A JP60106453A JP10645385A JPS61264164A JP S61264164 A JPS61264164 A JP S61264164A JP 60106453 A JP60106453 A JP 60106453A JP 10645385 A JP10645385 A JP 10645385A JP S61264164 A JPS61264164 A JP S61264164A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- wire
- contg
- temperature
- nb3sn
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000001125 extrusion Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 29
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 229910052718 tin Inorganic materials 0.000 claims abstract description 12
- 229910001257 Nb alloy Inorganic materials 0.000 claims abstract description 9
- 238000005491 wire drawing Methods 0.000 claims abstract description 7
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910000657 niobium-tin Inorganic materials 0.000 abstract description 13
- 238000000137 annealing Methods 0.000 abstract description 6
- 229910052735 hafnium Inorganic materials 0.000 abstract description 3
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000011162 core material Substances 0.000 description 8
- 229910000906 Bronze Inorganic materials 0.000 description 7
- 239000010974 bronze Substances 0.000 description 7
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 229910001069 Ti alloy Inorganic materials 0.000 description 6
- 238000005482 strain hardening Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000886 hydrostatic extrusion Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
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
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はＮｂ３Ｓｎ超電導線の製造方法に関し、さらに
詳しくは、押出比を大きくし、工程数を省略することが
できるＮｂ３Ｓｎ超電導線の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a Nb3Sn superconducting wire, and more particularly to a method for manufacturing a Nb3Sn superconducting wire that can increase the extrusion ratio and omit the number of steps.
［従来技術］
従来より、Ｎｂ、Ｓｎ超電導線は８Ｔ以上の高磁界を発
生する超電導マグネットに使用される線材として実用化
されている。特に、Ｔｉを含有させた（Ｎｂ、Ｔｉ）、
Ｓｎ多芯線材は高磁場特性の改良された線材として注目
されている。[Prior Art] Conventionally, Nb and Sn superconducting wires have been put to practical use as wires used in superconducting magnets that generate a high magnetic field of 8T or more. In particular, containing Ti (Nb, Ti),
Sn multicore wires are attracting attention as wires with improved high magnetic field characteristics.
この（Ｎｂ、Ｔｉ）ｓｓｎ超電導線材の製造方法は、Ｎ
ｂ芯材にＴｉを添加する方法、Ｃｕ−７ａｔ％Ｓｎブロ
ンズにＴｉを添加する方法が実施されている（例えば、
特開昭５８−０２３１１０号公報参照）。This (Nb, Ti)ssn superconducting wire manufacturing method is
b A method of adding Ti to the core material and a method of adding Ti to Cu-7at%Sn bronze have been implemented (for example,
(See Japanese Patent Application Laid-Open No. 58-023110).
この方法において、Ｃｕ ７ａｔ％ＳｎブロンズにＴ
ｉを添加する方法が有望であり、製造コストが低い。In this method, Cu 7at%Sn bronze is
The method of adding i is promising and has low manufacturing cost.
第２図に超電導線の単芯線および多芯線の製造即ち、第
２図（ａ）の単芯線製造は、単芯ビレット組立１→溶接
２→加熱３→熱間精水圧押出し４→抽伸５→伸線６→熱
処理７の工程により行なう。Fig. 2 shows the production of single-core and multi-core superconducting wires, that is, the production of the single-core wire in Fig. 2 (a): single-core billet assembly 1 -> welding 2 -> heating 3 -> hot water pressure extrusion 4 -> drawing 5 -> This is carried out through the steps of wire drawing 6 → heat treatment 7.
また、第２図（ｂ）の多芯線製造は、多芯ビレット組立
８→溶接９→加熱１０→熱間精水圧押出し１１→抽伸１
２→伸１ｉｊ１３→ツイスト１４の工程により行なう。In addition, the multifilamentary wire manufacturing shown in FIG. 2(b) is as follows: multifilamentary billet assembly 8 → welding 9 → heating 10 → hot water pressure extrusion 11 → drawing 1
This is done through the steps of 2→Stretch 1ij13→Twist 14.
しかして、Ｎｂ３Ｓｎ多芯線材を製造するには、潤滑押
出法や静水圧押出法等により行なわれているが、上記Ｃ
ｕ−７ａｔ％Ｓｎブロンズは高温における延性が小さい
ため、約４００℃以下の低温による押出しを余儀なくさ
れていた。そのため、押出比を大きくとることができな
かった。However, in order to manufacture Nb3Sn multifilamentary wire, lubricated extrusion method, hydrostatic extrusion method, etc. are used.
Since u-7at%Sn bronze has low ductility at high temperatures, it has been forced to be extruded at low temperatures of about 400°C or lower. Therefore, it was not possible to increase the extrusion ratio.
そして、押出材はその後線材とするために多数パスの冷
間加工を行なうのであるが、上記ブロンズの加工硬化が
激しいので数バスの冷間加工毎に熱処理を行なって焼な
ましを行なう必要がある。The extruded material is then subjected to multiple passes of cold working to make it into a wire rod, but since the bronze is severely work hardened, it is necessary to perform heat treatment and annealing after every few passes of cold working. be.
従って、Ｃｕ−７ａｔ％Ｓｎブロンズの押出しを行なう
時の押出比が小さいと押出材の直径が大ぎくなり、引続
いて行なう冷間加工のパス回数が多くなり、それに伴な
う熱処理回数も必然的に多くなるという問題がある。Therefore, if the extrusion ratio when extruding Cu-7at%Sn bronze is small, the diameter of the extruded material will become large, the number of passes of subsequent cold working will increase, and the number of heat treatments will inevitably be required. The problem is that there are many
［発明が解決しようとする問題点］
本発明は上記の押出しおよび冷間加工工程における問題
点を解決すべくなされたものであり、本発明者等は、先
ず、Ｃｕ−３ｎ合金マトリックスにＴｉを少量含有させ
た場合に高温における伸びおよび絞りが大幅に向上する
ことを知見し、Ｔｉ添加によってＮｂ３Ｓｎ多芯線材の
高押出し比での熱間押出しが可能であることを実験によ
り確認し、また、本発明者等はこの熱間押出しにおいて
押出し比５以上の強加工を行なうと、Ｔｉ添加Ｎｂ３Ｓ
ｎ線材のブロンズマトリックス中に析出している５ｎ−
Ｔｉ化合物が微細化され、その後の加工が著しく容易と
なることを確認し、さらに、Ｔｉ添加Ｎｂ＋Ｓｎ線材の
熱間押出し材はその後の伸線加工および圧延加工を２０
０℃以上の温間で行なうことにより、従来の方法に比較
して全工程での中間焼鈍の回数を１１５以下に減らすこ
とができることを見出し、芯とブロンズマトリックスと
の密着性が改善され、線材の特性の均一性をも向上させ
ることがでとるＴｉ添加Ｎｂ、Ｓｎ超電導線の製造方法
を開発したのである。[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems in the extrusion and cold working processes, and the inventors first added Ti to the Cu-3n alloy matrix. It was found that the elongation and reduction of area at high temperatures were significantly improved when a small amount of Ti was added, and it was confirmed through experiments that hot extrusion of Nb3Sn multifilamentary wires at high extrusion ratios was possible by adding Ti. The present inventors have found that when intense processing is performed at an extrusion ratio of 5 or more in this hot extrusion, Ti-added Nb3S
5n- precipitated in the bronze matrix of the n-wire
It was confirmed that the Ti compound was made finer and the subsequent processing became significantly easier, and furthermore, the hot extruded material of the Ti-added Nb+Sn wire was able to undergo the subsequent wire drawing and rolling processing for 20 minutes.
It was discovered that the number of intermediate annealing steps in the entire process can be reduced to 115 or less compared to conventional methods by performing the process at a temperature of 0°C or higher. They developed a method for manufacturing Ti-doped Nb, Sn superconducting wires that also improves the uniformity of the properties.
［問題点を解決するための手段１
本発明に係るＮｂ３Ｓｎ超電導線の製造方法は、（１）
Ｓｎ １〜１５ａｔ％、Ｔｉ ０．１−８ａｔ％を
含有する銅基合金体と、ＮｂまたはＮｂにＴｉ、 Ｚｒ
、 Ｈｆの何れか１種または２種以上０．１〜１５ａｔ
％を含有するＮｂ合金体からなる複合体を、４００℃以
上の温度で、押出し比５以上で押出し加工することを特
徴とするＴｉ添加Ｎｂ３Ｓｎ超電導線の製造方法を第１
の発明とし、
（２） Ｓｎ １〜１５ａｔ％、Ｔｉ ０．１−８ａ
ｔ％を含有する銅基合金体と、ＮｂまたはＮｂにＴｉ、
Ｚｒ、 ＨＥの何れか１種または２種以上０．１〜１
５ａｔ％を含有するＮｂ合金体からなる複合体を、４０
０℃以上の温度で、押出し比５以上で押出し加工し、こ
の押出し加工材を、さらに、２００°Ｃ以上の温度にお
いて伸線加工、圧延加工或いは管用加工をする方法を第
２の発明とする２つの発明よりなるものである。[Means for solving the problem 1 The method for manufacturing a Nb3Sn superconducting wire according to the present invention includes (1)
A copper-based alloy body containing 1 to 15 at% Sn and 0.1 to 8 at% Ti, and Nb or Nb with Ti and Zr
, any one type or two or more types of Hf 0.1 to 15at
A first method for manufacturing a Ti-added Nb3Sn superconducting wire, which comprises extruding a composite consisting of a Nb alloy containing % at a temperature of 400° C. or higher and an extrusion ratio of 5 or higher.
(2) Sn 1-15 at%, Ti 0.1-8a
a copper-based alloy body containing Nb or Nb with Ti,
One or more of Zr and HE 0.1 to 1
A composite consisting of a Nb alloy body containing 5 at%
A second invention is a method of extruding at a temperature of 0°C or higher and an extrusion ratio of 5 or higher, and then subjecting this extruded material to wire drawing, rolling, or pipe processing at a temperature of 200°C or higher. This invention consists of two inventions.
本発明に係るＮｂ３Ｓｎ超電導線の製造方法について以
下詳細に説明する。The method for manufacturing the Nb3Sn superconducting wire according to the present invention will be described in detail below.
先ず、本発明に係るＮｂ３Ｓｎ超電導線の製造方法（以
下単に本発明に係る方法ということがある。First, a method for manufacturing an Nb3Sn superconducting wire according to the present invention (hereinafter sometimes simply referred to as a method according to the present invention).
）において使用する銅基合金体およびＮｂ、Ｎｂ合金体
について説明する。) The copper-based alloy body and the Nb, Nb alloy body used in the above will be explained.
銅基合金体。Copper-based alloy body.
Ｓｎ含有量が１ａｔ％未満では熱処理の際にＮｂ３Ｓｎ
の生成が極めて遅くなると共にその超電導特性も著しく
低下し、また、Ｓｎ １５ａｔ％を越えて含有されるど
銅基合金の加工性が著しく損なわれる。よって、Ｓｎ含
有量は１〜１５ａｔ％とする。If the Sn content is less than 1 at%, Nb3Sn will be removed during heat treatment.
The formation of Sn is extremely slow and its superconducting properties are also significantly reduced, and if Sn exceeds 15 at%, the workability of the copper-based alloy is significantly impaired. Therefore, the Sn content is set to 1 to 15 at%.
Ｔｉ含有量が０．ｌａｔ％未満では強磁界特性の改善効
果および高温における押出し加工性の改善効果が得られ
ず、また、８ａｔ％を越える含有量では銅基合金の加工
性を著しく損なう。よって、Ｔｉ含有量は０．１〜８ａ
ｔ％とする。Ti content is 0. If the content is less than lat %, the effect of improving strong magnetic field properties and the extrusion workability at high temperatures cannot be obtained, and if the content exceeds 8 at %, the workability of the copper-based alloy is significantly impaired. Therefore, the Ti content is 0.1 to 8a
It is assumed to be t%.
純Ｎｂ或いは純ＮｂにＴｉ、Ｚｒ、Ｈｆの何れか１種ま
たは２種以上の含有量が０．ｌａｔ％未満では超電導特
性改善の効果が得られず、また、１５ａｔ％を越えて含
有されるとＮｂ合金体の加工性を著しく損なう。よって
、Ｔｉ、Ｚｒ、Ｈｆの何れか１種または２種以上の含有
量は０．１〜１５ａｔ％とする。Pure Nb or pure Nb containing one or more of Ti, Zr, and Hf in a content of 0. If the content is less than lat %, the effect of improving superconducting properties cannot be obtained, and if the content exceeds 15 at %, the workability of the Nb alloy body is significantly impaired. Therefore, the content of any one or more of Ti, Zr, and Hf is set to 0.1 to 15 at%.
次に、本発明に係るＮｂ３Ｓｎ超電導線の製造方法にお
いて、４００℃以上の温度で押出し加工を行なうことに
ついて説明する。Next, in the method for manufacturing a Nb3Sn superconducting wire according to the present invention, extrusion processing at a temperature of 400° C. or higher will be explained.
Ｎｂ合金体とＣｕ−８ｎＴｉ合金体との複合体を押出し
加工する温度が４００°Ｃ未満では、Ｃｕ−８ｎ−Ｔｉ
合金体の加工性が得られないため、４００℃以上とする
必要がある。If the temperature at which the composite of the Nb alloy body and the Cu-8nTi alloy body is extruded is less than 400°C, the Cu-8n-Ti
Since the workability of the alloy body cannot be obtained, it is necessary to set the temperature to 400°C or higher.
また、本発明に係る方法において４００℃以上の温度で
の押出し加工について第１図により説明する。Further, extrusion processing at a temperature of 400° C. or higher in the method according to the present invention will be explained with reference to FIG.
第１図にＣｕ−７ａｔ％ＳｎとＣｕ−７ａｔ％５ｎ−０
．４ ａｔ％Ｔｉ合金１の高温における機械的性質を示
す。Figure 1 shows Cu-7at%Sn and Cu-7at%5n-0.
．． 4 shows the mechanical properties of Ti alloy 1 at high temperatures.
この第１図から明らかなように、通常のＣｕ−７ａｔ％
Ｓｎ合金２は高温における伸びおよび絞りが極めて低く
、本発明に係る方法において使用するＣｕ−７ａｔ％５
ｎ−０．４ａｔ％Ｔｉ合金では、約４００℃の温度にお
いて伸びおよび絞りが最低を示しているが、４００℃以
上の温度になると伸びおよび絞りが急激に向上し、５０
０℃以上の温度では極めて大きな伸び、絞りを示し、熱
間における加工性が非常に優れたものとなることがわか
る。As is clear from this Figure 1, normal Cu-7at%
Sn alloy 2 has extremely low elongation and narrowing at high temperatures, and Cu-7 at% 5 used in the method of the present invention.
In the n-0.4 at% Ti alloy, the elongation and reduction of area are the lowest at a temperature of about 400°C, but at temperatures above 400°C, the elongation and reduction of area increase rapidly, and the
It can be seen that at temperatures above 0°C, extremely large elongation and reduction are exhibited, and the workability in hot conditions is extremely excellent.
また、一方、第１図に示すように引張強さは７００ ’
Ｃの温度では３００℃の温度の約１１５まで低下するの
で押出し比を大きくとることができ、従つて、押出し材
の径が小さくなり、続いて行なう冷開加工のバス回数を
減少させることができるので加工工程を簡略化できる。On the other hand, as shown in Figure 1, the tensile strength is 700'
At temperature C, the extrusion ratio is lowered to about 115, which is the temperature at 300°C, so the extrusion ratio can be increased, and the diameter of the extruded material can therefore be reduced, making it possible to reduce the number of baths in the subsequent cold-opening process. Therefore, the processing process can be simplified.
即ち、上記に説明した第２図（ａ）、（ｂ）における超
電導線製造工程図において、第２図（ａ）においては抽
伸５、伸線６および熱処理７を短縮することができ、ま
た、第２図（ｂ）においては抽伸１３、伸線１３の工程
を短縮することができる。That is, in the superconducting wire manufacturing process diagrams in FIGS. 2(a) and 2(b) explained above, drawing 5, wire drawing 6, and heat treatment 7 can be shortened in FIG. 2(a), and In FIG. 2(b), the steps of drawing 13 and wire drawing 13 can be shortened.
また、押出し加工の押出し比が５未満ではＣｕ５ｎ
Ｔｉ合金体中の５ｎ−Ｔｉ析出化合物が微細化されない
。よって、押出し比は５以上とする。In addition, if the extrusion ratio in extrusion processing is less than 5, Cu5n
The 5n-Ti precipitated compound in the Ti alloy body is not refined. Therefore, the extrusion ratio is set to 5 or more.
さらに、押出し材の温間加工温度が２００℃未満ではＣ
ｕ−８ｎ−Ｔｉ合金体の加工性の改善が得られないので
、２００℃以上でなければならない。Furthermore, if the warm working temperature of the extruded material is less than 200°C, C
Since no improvement in the workability of the u-8n-Ti alloy body can be obtained, the temperature must be 200°C or higher.
［実施例１
本発明に係るＮｂ＋Ｓｎ超電導線の製造方法について実
施例を説明する。[Example 1] An example of the method for manufacturing a Nb+Sn superconducting wire according to the present invention will be described.
実施例１
外径６８ＩＩＩＩ１１、内径３４ｍｍのＣｕ−７ａｔ％
５ｎ−０．４ａｔ％Ｔｉ合金管に純Ｎｂ芯を挿入し、こ
の複合体を６７０℃の温度に加熱し、押出し比２０で高
温静水押出しを行なって外径１５．２ｍｍの線材とした
。Example 1 Cu-7at% with outer diameter 68III11 and inner diameter 34mm
A pure Nb core was inserted into a 5n-0.4 at% Ti alloy tube, and the composite was heated to a temperature of 670°C and subjected to high temperature isostatic extrusion at an extrusion ratio of 20 to obtain a wire rod with an outer diameter of 15.2 mm.
Ｃｕ−８ｎ合金に少量のＴｉが添加されて高温における
伸びおよび絞りが着しく改善されているため、上記のよ
うに強加工を行なっても全く割れの無い押出し材が得ら
れた。Since a small amount of Ti was added to the Cu-8n alloy, the elongation and reduction of area at high temperatures were significantly improved, so an extruded material with no cracks was obtained even when subjected to heavy working as described above.
この押出し材を１９本束ね、再び６７０°Ｃの温度で静
水圧押出しを行なって外径１５．２ｍｍの多芯線材とし
た。Nineteen pieces of this extruded material were bundled and hydrostatically extruded again at a temperature of 670°C to form a multifilamentary wire with an outer diameter of 15.2 mm.
この゛押出し材に対して、さらに、２５０℃の温度で溝
ロール加工およびロール加工を加え、幅１０＋ｎｍ、厚
さ０．３ｍｍの多芯テープを作製した。This extruded material was further subjected to groove roll processing and roll processing at a temperature of 250°C to produce a multicore tape with a width of 10+ nm and a thickness of 0.3 mm.
熱間押出しにおける強加工によってブロンズマトリック
ス中の５ｎ−Ｔｉ析出化合物が微細化されており、しか
も、温間での加工性の改善のため、同線材の加工は容易
であり、全工程での中間焼鈍は３回のみで均一な多芯テ
ープ線材を製造することができた。なお、従来の方法で
は全工程で約２５回の中間焼鈍を行なう必要がある。The 5n-Ti precipitated compound in the bronze matrix is made fine by the strong working during hot extrusion, and the wire rod is easy to process due to improved warm workability. It was possible to manufacture a uniform multicore tape wire by annealing only three times. In addition, in the conventional method, it is necessary to perform intermediate annealing approximately 25 times in the entire process.
実施例２
単芯のＮｂ／ Ｃｕ−０，７ａｔ％５ｎ−０，４ａｔ％
Ｔｉ複合体の熱間押出し材を５５Ｘ１８７本（１０２８
５本）束ねて複合多芯線ビレットを作製した。ビレット
径は１４０＋ｎｍである。Example 2 Single core Nb/Cu-0,7at%5n-0,4at%
55 x 187 hot extruded Ti composite materials (1028
5 wires) were bundled to produce a composite multifilamentary wire billet. The billet diameter is 140+nm.
このビレットを６７０℃の温度に加熱して押出し比３３
で高温静水圧押出しを行ない、外径２５．４ｍｍの線材
とした。This billet was heated to a temperature of 670°C and an extrusion ratio of 33
High temperature isostatic extrusion was performed to obtain a wire rod with an outer diameter of 25.4 mm.
さらに、この押出し材を２５０℃の温度で線引きし、５
回の中間焼鈍を行なり・ながら外径０．８６＋ｎｍの線
とした。Furthermore, this extruded material was drawn at a temperature of 250°C, and
A wire with an outer diameter of 0.86+nm was obtained by performing intermediate annealing.
その断面の顕微鏡写真を第３図に示す。芯線径が均一な
複合超電導線が得られていることがわかる。A microscopic photograph of its cross section is shown in FIG. It can be seen that a composite superconducting wire with a uniform core wire diameter was obtained.
［発明の効果１
以上説明したように、本発明に係るＮｂ３Ｓｎ超電導線
の製造方法は上記の構成を有しているものであるか１高
温度における押出し比を大きくとることができるので、
押出し後の冷間加工の数を減少させることができ省エネ
ル臀°−を達成でき、かつ、製造コストを着しく減少さ
せることかできるという効果を有するものである。[Effects of the Invention 1] As explained above, the method for manufacturing a Nb3Sn superconducting wire according to the present invention has the above-mentioned configuration.1 Since the extrusion ratio at high temperature can be increased,
This has the effect that the number of cold workings after extrusion can be reduced, energy saving can be achieved, and manufacturing costs can be significantly reduced.
第１図はＣｕ−７ａｔ％５ｎ−０，４ａｔ％Ｔｉ合金の
温度と機械的性質の関係を示す図、第２図は超電導線の
製造工程図、第３図は本発明に係るＮｂ。
Ｓｎ超電導線の製造方法により製造された複合多芯線の
顕微鏡写真である。Fig. 1 is a diagram showing the relationship between temperature and mechanical properties of Cu-7at%5n-0,4at%Ti alloy, Fig. 2 is a manufacturing process diagram of superconducting wire, and Fig. 3 is Nb according to the present invention. It is a micrograph of the composite multifilamentary wire manufactured by the manufacturing method of Sn superconducting wire.
Claims (2)
有する銅基合金体と、ＮｂまたはＮｂにＴｉ、Ｚｒ、Ｈ
ｆの何れか１種または２種以上０．１〜１５ａｔ％を含
有するＮｂ合金体からなる複合体を、４００℃以上の温
度で、押出し比５以上で押出し加工することを特徴とす
るＴｉ添加Ｎｂ＿３Ｓｎ超電導線の製造方法。(1) A copper-based alloy body containing 1 to 15 at% Sn and 0.1 to 8 at% Ti, and Nb or Nb with Ti, Zr, and H.
Ti addition characterized by extruding a composite consisting of an Nb alloy body containing 0.1 to 15 at% of one or more of f at a temperature of 400° C. or higher and an extrusion ratio of 5 or higher. A method for manufacturing Nb_3Sn superconducting wire.
有する銅基合金体と、ＮｂまたはＮｂにＴｉ、Ｚｒ、Ｈ
ｆの何れか１種または２種以上０．１〜１５ａｔ％を含
有するＮｂ合金体からなる複合体を、４００℃以上の温
度で、押出し比５以上で押出し加工し、この押出し加工
材を、さらに、２００℃以上の温度において伸線加工、
圧延加工或いは管用加工することを特徴とするＴｉ添加
Ｎｂ＿３Ｓｎ超電導線の製造方法。(2) A copper-based alloy body containing 1 to 15 at% Sn and 0.1 to 8 at% Ti, and Nb or Nb with Ti, Zr, and H.
A composite consisting of an Nb alloy body containing 0.1 to 15 at% of one or more of f is extruded at a temperature of 400 ° C. or higher and an extrusion ratio of 5 or higher, and this extruded material is Furthermore, wire drawing processing at a temperature of 200℃ or higher,
A method for producing a Ti-added Nb_3Sn superconducting wire, which is characterized by rolling or pipe processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106453A JPS61264164A (en) | 1985-05-18 | 1985-05-18 | Manufacture of superconductive wire containing nb3sn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60106453A JPS61264164A (en) | 1985-05-18 | 1985-05-18 | Manufacture of superconductive wire containing nb3sn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61264164A true JPS61264164A (en) | 1986-11-22 |
| JPS6366889B2 JPS6366889B2 (en) | 1988-12-22 |
Family
ID=14434016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60106453A Granted JPS61264164A (en) | 1985-05-18 | 1985-05-18 | Manufacture of superconductive wire containing nb3sn |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61264164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006156343A (en) * | 2004-09-16 | 2006-06-15 | Bruker Biospin Ag | Manufacturing method of superconducting element |
| JP2007141682A (en) * | 2005-11-18 | 2007-06-07 | Japan Superconductor Technology Inc | Nb3Sn superconducting wire and precursor therefor |
-
1985
- 1985-05-18 JP JP60106453A patent/JPS61264164A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006156343A (en) * | 2004-09-16 | 2006-06-15 | Bruker Biospin Ag | Manufacturing method of superconducting element |
| JP2007141682A (en) * | 2005-11-18 | 2007-06-07 | Japan Superconductor Technology Inc | Nb3Sn superconducting wire and precursor therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6366889B2 (en) | 1988-12-22 |
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