JPS61230210A - Manufacture of nb-ti based superconducting wire - Google Patents
Manufacture of nb-ti based superconducting wireInfo
- Publication number
- JPS61230210A JPS61230210A JP60071169A JP7116985A JPS61230210A JP S61230210 A JPS61230210 A JP S61230210A JP 60071169 A JP60071169 A JP 60071169A JP 7116985 A JP7116985 A JP 7116985A JP S61230210 A JPS61230210 A JP S61230210A
- Authority
- JP
- Japan
- Prior art keywords
- composite
- superconductor
- wire
- base material
- 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.)
- Granted
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
Landscapes
- Wire Processing (AREA)
- Superconductors And Manufacturing Methods Therefor (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】
〔技術分野〕
本発明は、Ｎｂ−Ｔｉ系合金を超電導体として使用する
超電導線材の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for manufacturing a superconducting wire using a Nb-Ti alloy as a superconductor.
従来、Ｎｂ−Ｔｉ系超電導線材を製造するにはまず第６
図に示すように、超電導体であるＮｂ −Ｔｉ系合金芯
１に非超電導体である例えば高純度銅の被覆２を被せた
断面六角形（断面円形の場合もある）の複合素線３を作
る。次にこの複合素線３を第７図に示すように、銅管４
の中に挿入し、整然と配列して複合母材５を作る。次に
この複合母材５を熱間押出により減面加工したのち、さ
らに伸線加工して第８図のような超電導線材６を得てい
る。第８図において、７はＮｂ−Ｔｉ系合金フィラメン
ト、８は銅被覆２と銅管４が一体となった安定化銅であ
る。Conventionally, in order to manufacture Nb-Ti superconducting wire, the sixth
As shown in the figure, a composite wire 3 with a hexagonal cross section (or circular cross section) is made by covering a Nb-Ti alloy core 1, which is a superconductor, with a coating 2, which is a non-superconductor, for example, high-purity copper. make. Next, as shown in FIG.
and arrange them in an orderly manner to form a composite base material 5. Next, this composite base material 5 is subjected to area reduction processing by hot extrusion, and then wire drawn to obtain a superconducting wire 6 as shown in FIG. In FIG. 8, 7 is an Nb-Ti alloy filament, and 8 is a stabilized copper in which the copper coating 2 and the copper tube 4 are integrated.
このような製造方法では、銅管内に複合素線を整然と配
列するために、複合素線の太さが３鶴以上あることが必
要で、どのため集合し得る素線数が数百から数千本に制
限される。その結果、さらにＮｂ−Ｔｉ系合金フィラメ
ント数の多い（フィラメントの細い）超電導線材を製造
する場合には、上記のような超電導線材にする前の複合
棒をさらに所要本数集合して熱間押出を行わなければな
らないため、製造が面倒になるばかりでなく、熱間押出
の際にはＮｂ−Ｔｉ系合金とＣｕが反応して両者の界面
に極めて硬くて脆いＣｕ−Ｔｉ化合物が形成されるため
、押出回数が増えると、その分Ｃｕ−Ｔｉ化合物も増加
してフィラメントの加工性が阻害されるという問題があ
った。このため従来の方法では、フィラメント数の極め
て多い、かプフィラメント径の極めて細い超電導線材を
製造することは困難であった。In this manufacturing method, in order to orderly arrange the composite wires inside the copper tube, the thickness of the composite wires must be three or more. Limited to 1,000 bottles. As a result, when manufacturing a superconducting wire with a larger number of Nb-Ti alloy filaments (thinner filaments), the required number of composite rods before being made into a superconducting wire as described above must be gathered together and hot extruded. Not only does this make manufacturing troublesome, but also because during hot extrusion, the Nb-Ti alloy and Cu react, forming an extremely hard and brittle Cu-Ti compound at the interface between the two. However, as the number of extrusions increases, the amount of Cu-Ti compounds also increases, which impairs the processability of the filament. For this reason, with conventional methods, it has been difficult to manufacture superconducting wires with an extremely large number of filaments and extremely small diameter cup filaments.
本発明は、上記のような従来技術の問題点を解決したＮ
ｂ−Ｔｉ系超電導線材の製造方法を提供するもので、そ
の方法は、（ａｌ非超電導体丙に少なくとも１本のＮｂ
−Ｔｉ系合金芯を有する複合素線を得る工程、山）その
複合素線を縦糸とし、それより細いあるいは薄い非超電
導体を横糸として、これらを編む工程、（ｅ）得られた
編組み体をその縦糸を長手方向にして渦巻き状に巻く工
程、ｆｄ）巻いた編組み体を非超電導体の管の中に挿入
して複合母材を作る工程、（Ｑ）その複合母材を減面加
工する工程、を有することを特徴とするものである。The present invention solves the problems of the prior art as described above.
The present invention provides a method for manufacturing a b-Ti based superconducting wire, which method comprises: adding at least one Nb wire to an Al non-superconductor C;
-Process of obtaining a composite strand having a Ti-based alloy core, mount) A process of knitting the composite strand as a warp and a thinner or thinner non-superconductor as a weft, (e) Obtained braided body (fd) Step of winding the wound braid into a spiral shape with its warp in the longitudinal direction; fd) Step of inserting the wound braid into a non-superconductor tube to create a composite base material; (Q) Reducing the area of the composite base material. It is characterized by having a process of processing.
その代表的な例を第１図ないし第５図を参照して説明す
ると、本発明の方法では、まず第１図（ａ）（ｂｌに示
すように、Ｎｂ Ｔｉ系合金芯１１にＣｕまたはＣｕ
合金などの非超電導体の被覆１２を被せた複合素ｍ１３
を作る。作りかたは従来と同じであるが、その太さは３
鶴よりかなり細くてよく、例えば１ｍとか０．５ｎ程度
にしてもよい。A typical example thereof will be explained with reference to FIGS. 1 to 5. In the method of the present invention, first, as shown in FIGS.
Composite element m13 covered with a coating 12 of a non-superconductor such as an alloy
make. The method of making is the same as before, but the thickness is 3
It may be much thinner than the crane, for example, about 1 m or 0.5 nm.
次に第２図（ａｌ （ｂｌに示すように、上記複合素線
１３を縦糸とし、それより充分薄いＣｕまたはＣｕ合金
などからなる非超電導体の箔１４を横糸として、それら
を編み、編組み体１５を作る。このとき複合素線１３に
は必要に応じ捻じりゃ転位を加えることもできる。次に
その編組み体１５を第３図に示すように、その縦糸を長
手方向にして渦巻き状に巻く。Next, as shown in FIG. A body 15 is made. At this time, twisting or dislocation can be added to the composite wire 13 if necessary. Next, as shown in FIG. Wrap it around.
このとき中心にＣｕまたはＣｕ合金などの非超電導体の
芯棒１６を配置すると、巻（のに便利であり、また空隙
を少なくするのにも好都合である。また巻き終わり端の
先にさらに非超電導体の板を巻くようにしてもよい。At this time, placing the core rod 16 of a non-superconductor such as Cu or Cu alloy at the center is convenient for winding and also for reducing voids. A superconductor plate may be wound.
次に巻いた編組み体１５を第４図に示すように、Ｃｕま
たはＣｕ合金などの非超電導体の管１７の中に挿入し、
複合母材１８を得る。次にこの複合母材１８を熱間押出
および伸線加工等により減面加工して、第５図のような
超電導線材１９を得る。第５図において、２０はＮｂ−
Ｔｉ系合金フィラメントであり、２１は非超電導体の被
覆１２）箔１４．芯棒１６、管１７が一体となった安定
化材である。Next, as shown in FIG. 4, the wound braided body 15 is inserted into a tube 17 made of a non-superconducting material such as Cu or Cu alloy.
A composite base material 18 is obtained. Next, this composite base material 18 is subjected to area reduction processing by hot extrusion, wire drawing, etc., to obtain a superconducting wire 19 as shown in FIG. In FIG. 5, 20 is Nb-
It is a Ti-based alloy filament, and 21 is a non-superconductor coating 12) foil 14. This is a stabilizing material in which a core rod 16 and a tube 17 are integrated.
上記のように複合素線を縦糸にして編組み体を６
形成するのは、集合するときに複合素線の不
整をなくすためであり、複合素線の不整が生じなければ
細い複合素線を使用できるため、一度により多くの複合
素線を集合できるようになる。As shown above, the composite wire is used as the warp to form a braided body with 6
The purpose of forming is to eliminate irregularities in the composite strands when they are assembled, and if there is no irregularity in the composite strands, thin composite strands can be used, so more composite strands can be assembled at once. Become.
Ｎｂ−Ｔｉ系合金芯に高純度銅を被覆してなる外径１鶴
、銅比１．８の複合素線を１０．４００本用意し、これ
を縦糸とし、厚さ１０μｍ１幅５ｆｉの銅テープを横糸
として編組み体を作り、これを渦巻き状に巻いて外径１
９９鶴にした。次にこれを、内径１２０襲、外径１４５
ｗａの高純度銅管内に挿入して複合母材を作り、この複
合母材を熱間押出により外径８０日とした後、中間熱処
理を含む冷間加工により外径０．５ｍの超電導線材を製
造した。この線材を実施別品とする。Prepare 10,400 composite strands of Nb-Ti alloy core coated with high-purity copper and have an outer diameter of 1 tsuru and a copper ratio of 1.8, and use these as warp threads to create a copper tape with a thickness of 10 μm and a width of 5 fi. Make a braided body using the weft, and wind this in a spiral to have an outer diameter of 1
I made it to 99 cranes. Next, make this with an inner diameter of 120 mm and an outer diameter of 145 mm.
A superconducting wire is inserted into a high-purity copper tube of wa to create a composite base material, and this composite base material is hot extruded to an outer diameter of 80 days, and then cold worked including intermediate heat treatment to produce a superconducting wire with an outer diameter of 0.5 m. was manufactured. This wire is a separate product.
また比較のため、Ｎｂ−Ｔｉ系合金芯に高純度銅を被覆
してなる外径１．０２ｍｍ、銅比１．８９の複合素線を
１０．４００本用意し、これを、内径１２０寵、外径１
４５鶴の高純度銅管内に挿入して複合母材を作り、この
複合母材を上記実施例と同様に減面加工して外径０．５
Ｈの超電導線材を製造した。この線材を比較別品１とす
る。For comparison, we prepared 10.400 composite wires with an outer diameter of 1.02 mm and a copper ratio of 1.89, which were made by coating a Nb-Ti alloy core with high-purity copper. Outer diameter 1
A composite base material is made by inserting it into a high-purity copper tube of 45 Tsuru, and this composite base material is subjected to surface reduction processing in the same manner as in the above example to have an outer diameter of 0.5.
H superconducting wire was manufactured. This wire rod is referred to as comparative product 1.
さらに比較のため、Ｎｂ−Ｔｉ系合金芯に高純度銅を被
覆してなる外径３．０２ｆｉ、銅比１．８９の複合素線
を１ 、２００本用意し、これを、内径１２０ｆｌ、外
径１４５ｍの高純度銅管内に挿入して複合母材を作リ、
この複合母材を上記実施例と同様に減面加工して外径０
．５ｆｌの超電導線材を製造した。この線材を比較別品
２とする。Furthermore, for comparison, we prepared 1,200 composite wires with an outer diameter of 3.02 fi and a copper ratio of 1.89, which were made by coating a Nb-Ti alloy core with high-purity copper. Create a composite base material by inserting it into a high-purity copper pipe with a diameter of 145 m.
This composite base material was processed to reduce the surface area in the same manner as in the above example, and the outer diameter was 0.
．． A 5fl superconducting wire was manufactured. This wire rod will be referred to as comparative product 2.
これらの試験結果はつぎの通りであった。The results of these tests were as follows.
また比較のため、Ｎｂ−Ｔｉ系合金芯に高純度銅を被覆
してなる外径３龍、銅比１．１の複合素線を１ 、２０
０本集合したものを、対辺４０ｍの六角棒とし、これを
内径１２０ｆｉ、外径１４５ｆｉの高純度鋼管内に密に
挿入して複合母材を作り、この複合母材を熱間押出によ
り外径８０鶴とした後、中間熱処理を含む冷間加工によ
り外径０．５ｔｍの超電導線材を製造すべく加工を進め
たが、外径２．３Ｈ前後から断線が頻繁に発生し、以後
の加工は不可能であった。そこで断線した線材の非超電
導体を酸で除去し、Ｎｂ−Ｔｉ系合金フィラメントの状
態を調査したところ、フィラメント直径は、設計値が約
１０μｍであるのに対し、０．５〜３０μｍと大きくバ
ラついていた。また、フィラメント表面にはＣｕ −Ｔ
ｉ化合物が多数形成されており、これがフィラメントの
破断を促進したものと考えられる。For comparison, 1 and 20 composite wires with an outer diameter of 3 mm and a copper ratio of 1.1 were prepared by coating a Nb-Ti alloy core with high-purity copper.
A hexagonal bar with the opposite side of 40 m is assembled, and this is tightly inserted into a high-purity steel pipe with an inner diameter of 120 fi and an outer diameter of 145 fi to create a composite base material, and this composite base material is hot extruded to reduce the outer diameter. After making 80 cranes, processing proceeded to produce a superconducting wire with an outer diameter of 0.5 tm by cold working including intermediate heat treatment, but wire breakage frequently occurred from around 2.3 H outer diameter, and subsequent processing was not possible. It was impossible. When we removed the non-superconductor of the broken wire with acid and investigated the condition of the Nb-Ti alloy filament, we found that the filament diameter varied widely from 0.5 to 30 μm, while the designed value was approximately 10 μm. It was on. In addition, Cu-T on the filament surface
A large number of i-compounds were formed, which is thought to have promoted filament breakage.
以上説明したように本発明では、Ｎｂ−Ｔｉ系合金芯を
含む複合素線を縦糸にした編組み体を作り、これを渦巻
き状に巻くことによって複合素線を集合するようにした
ので、集合時に複合素線の不整が生じるおそれがなく、
従来より細い複合素線を使用することができる。このた
め１回で集合できる複合素線数が増え、フィラメント径
の細い、かつフィラメント数の多い超電導線材を容易に
製造することができる。As explained above, in the present invention, a braided body is created in which composite strands containing a Nb-Ti alloy core are used as warps, and the composite strands are assembled by winding this in a spiral. There is no risk of irregularities in the composite wire,
Composite wires that are thinner than conventional wires can be used. Therefore, the number of composite wires that can be assembled at one time increases, and a superconducting wire with a small filament diameter and a large number of filaments can be easily manufactured.
第１図ないし第５図は本発明の製造方法の一例を示すも
ので、第１図（ａ）および（ｂｌは複合素線の端面図お
よび平面図、第２図（ａ）および（ｂ）は編組み体の端
面図および平面図、第３図は編組み体を巻いた状態の端
面図、第４図は複合母材の端面図、第５図は超電導線材
の端面図である。また第６図ないし第８図は従来の製造
方法を示すもので、第１図は複合素線の端面図、第２図
は複合母材の端面図、第８図は超電導線材の端面図であ
る。
１１〜Ｎｂ−Ｔｉ系合金芯、１２〜非超電導体の被覆、
１３〜複合素線、１４〜非超電導体の箔、１５〜編組み
体、１６〜非超電導体の芯棒、１７〜非超電導体の管、
１８〜複合母材、１９〜超電導線材。
第６図 第７図 第８図1 to 5 show an example of the manufacturing method of the present invention, and FIGS. 1(a) and (bl) are end views and plan views of composite wires, and FIGS. 2(a) and (b) 3 is an end view of the braided body, FIG. 3 is an end view of the braided body in a wound state, FIG. 4 is an end view of the composite base material, and FIG. 5 is an end view of the superconducting wire. Figures 6 to 8 show the conventional manufacturing method, where Figure 1 is an end view of a composite wire, Figure 2 is an end view of a composite base material, and Figure 8 is an end view of a superconducting wire. 11 - Nb-Ti alloy core, 12 - non-superconductor coating,
13 - composite strand, 14 - non-superconductor foil, 15 - braided body, 16 - non-superconductor core rod, 17 - non-superconductor tube,
18 - Composite base material, 19 - Superconducting wire. Figure 6 Figure 7 Figure 8
Claims (3)
ｉ系合金芯を有する複合素線を得る工程、（ｂ）その複
合素線を縦糸とし、それより細いあるいは薄い非超電導
体を横糸として、これらを編む工程、（ｃ）得られた編
組み体をその縦糸を長手方向にして渦巻き状に巻く工程
、（ｄ）巻いた編組み体を非超電導体の管の中に挿入し
て複合母材を作る工程、（ｅ）その複合母材を減面加工
する工程、を有することを特徴とするＮｂ−Ｔｉ系超電
導線材の製造方法。(1) (a) At least one Nb-T in the non-superconductor
A step of obtaining a composite wire having an i-based alloy core, (b) a step of knitting the composite wire as a warp and a thinner or thinner non-superconductor as a weft, (c) the obtained braided body (d) inserting the wound braid into a non-superconductor tube to create a composite base material; (e) reducing the composite base material. 1. A method for manufacturing a Nb-Ti superconducting wire, comprising the step of surface processing.
編組み体を巻く際に、非超電導体の芯棒を使用すること
を特徴とするもの。(2) The manufacturing method according to claim 1, comprising:
A device characterized by using a non-superconducting core rod when winding the braided body.
法であって、非超電導体はＣｕまたはＣｕ合金であるも
の。(3) The manufacturing method according to claim 1 or 2, wherein the non-superconductor is Cu or a Cu alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071169A JPH0648605B2 (en) | 1985-04-05 | 1985-04-05 | Method for manufacturing Nb-Ti based superconducting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071169A JPH0648605B2 (en) | 1985-04-05 | 1985-04-05 | Method for manufacturing Nb-Ti based superconducting wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61230210A true JPS61230210A (en) | 1986-10-14 |
| JPH0648605B2 JPH0648605B2 (en) | 1994-06-22 |
Family
ID=13452882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60071169A Expired - Lifetime JPH0648605B2 (en) | 1985-04-05 | 1985-04-05 | Method for manufacturing Nb-Ti based superconducting wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648605B2 (en) |
-
1985
- 1985-04-05 JP JP60071169A patent/JPH0648605B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648605B2 (en) | 1994-06-22 |
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