JPH05123875A - Production of composite pipe - Google Patents
Production of composite pipeInfo
- Publication number
- JPH05123875A JPH05123875A JP28327691A JP28327691A JPH05123875A JP H05123875 A JPH05123875 A JP H05123875A JP 28327691 A JP28327691 A JP 28327691A JP 28327691 A JP28327691 A JP 28327691A JP H05123875 A JPH05123875 A JP H05123875A
- Authority
- JP
- Japan
- Prior art keywords
- composite
- pipe
- tube
- sheet
- matrix
- 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
- 239000002131 composite material Substances 0.000 title abstract description 28
- 238000004519 manufacturing process Methods 0.000 title description 11
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000004804 winding Methods 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000001513 hot isostatic pressing Methods 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 15
- 238000010894 electron beam technology Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract 1
- 239000010955 niobium Substances 0.000 description 21
- 239000011159 matrix material Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 15
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 8
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 229910017755 Cu-Sn Inorganic materials 0.000 description 4
- 229910017927 Cu—Sn Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 238000000886 hydrostatic extrusion Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は複合管の製造方法に係
り、特に超電導線に遮蔽材を介して安定化材を付与する
のに好適する複合管の製造方法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a composite tube, and more particularly to an improvement of a method of manufacturing a composite tube suitable for applying a stabilizing material to a superconducting wire through a shielding material.
【０００２】[0002]
【従来の技術】Ｎｂ3 Ｓｎ超電導線の製造方法として、
内部拡散法、ブロンズ法、ニオブ・チューブ法等による
ものが知られている。2. Description of the Related Art As a method of manufacturing Nb 3 Sn superconducting wire,
Known methods include the internal diffusion method, the bronze method, the niobium tube method, and the like.
【０００３】内部拡散法は、Ｃｕマトリックス中に拡散
源となるＳｎおよび多数本のＮｂロッドを配置した複合
体を加工後、熱処理を施してＳｎをＣｕ中に拡散させて
マトリックスをブロンズ化した後、Ｎｂフィラメントと
反応させてＮｂ3 Ｓｎを生成させるものであり、一方、
ブロンズ法はＣｕ−Ｓｎ合金マトリックス中に多数本の
Ｎｂロッドを配置した複合体を加工後、熱処理を施して
Ｎｂフィラメントをマトリックスと反応させてＮｂ3 Ｓ
ｎを生成させるものである。In the internal diffusion method, after processing a composite having Sn serving as a diffusion source and a large number of Nb rods in a Cu matrix, heat treatment is performed to diffuse Sn into Cu and bronze the matrix. , Nb 3 Sn to produce Nb 3 Sn, while
Bronze process after processing the complex was placed a large number of Nb rods in the Cu-Sn alloy matrix, and the Nb filaments was reacted with the matrix heat treated Nb 3 S
n is generated.
【０００４】これらの方法においては、最終的にマトリ
ックスはＣｕ−Ｓｎ合金となるため、超電導線の安定化
を図るためには安定化材、即ち、純Ｃｕや純Ａｌを付与
する必要があり、通常はＮｂ，Ｔａ，Ｖ等の高融点材料
からなる遮蔽材を介してＣｕ−Ｓｎ合金マトリックスの
外側に安定化材が配置される。In these methods, since the matrix finally becomes a Cu-Sn alloy, it is necessary to add a stabilizing material, that is, pure Cu or pure Al, in order to stabilize the superconducting wire. Usually, the stabilizing material is arranged outside the Cu—Sn alloy matrix through a shielding material made of a high melting point material such as Nb, Ta, or V.
【０００５】また、ニオブ・チューブ法は、Ｎｂ管の内
部にＣｕクラッドＳｎを収容し、これらの多数本をＣｕ
マトリックス中に配置した複合体を加工後、熱処理を施
してＮｂ管の内側にＮｂ3 Ｓｎを生成させるもので、Ｎ
ｂ管を残存させることにより、ＣｕマトリックスがＳｎ
で汚染されることは本質的にない筈であるが、細線化に
伴うＮｂ管の均一変形が困難であり、Ｎｂ管の薄肉部や
破断箇所よりＳｎが拡散してＣｕマトリックスを汚染す
ることが生ずるため、マトリックスの外側に遮蔽材を介
して安定化材を配置することが行われている。In the niobium tube method, Cu clad Sn is housed inside the Nb tube, and a large number of these are Cu-clad.
After processing the composite arranged in the matrix, heat treatment is applied to generate Nb 3 Sn inside the Nb tube.
By leaving the b tube, the Cu matrix becomes Sn
However, it is difficult to uniformly deform the Nb pipe due to thinning, and Sn diffuses from the thin portion or the break point of the Nb pipe to contaminate the Cu matrix. As a result, a stabilizer is placed outside the matrix via a shielding material.
【０００６】上記の場合において、複合体中に遮蔽材を
介して安定化材を配置するために、現在まで以下の方法
が採用されている。In the above case, the following method has been adopted to date in order to dispose the stabilizing material in the composite body through the shielding material.
【０００７】（イ）パイプ状に加工した遮蔽材をマトリ
ックスの外側に配置し、これを安定化材からなる金属管
の内部に収容する。(A) A shielding material processed into a pipe shape is arranged outside the matrix and accommodated inside a metal tube made of a stabilizing material.
【０００８】（ロ）シート状の遮蔽材をマトリックスの
外側に縦沿えまたは巻回し、これを安定化材からなる金
属管の内部に収容する。(B) A sheet-shaped shielding material is vertically or wound around the outside of the matrix, and is housed inside a metal tube made of a stabilizing material.
【０００９】（ハ）遮蔽材となる金属管の内部に、例え
ばＣｕロッドを収容し、さらに金属管の外側に安定化材
からなる金属管を配置して形成したビレットを熱間押出
し後、Ｃｕロッドを穿孔して複合管を形成し、これをマ
トリックスの外側に配置する。(C) A billet formed by accommodating, for example, a Cu rod inside a metal tube serving as a shielding material and further disposing a metal tube made of a stabilizing material on the outside of the metal tube is hot extruded, and then Cu The rod is perforated to form a composite tube, which is placed outside the matrix.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら上記の場
合においては以下に述べる難点がある。However, in the above case, there are the following problems.
【００１１】即ち、上記（イ）の方法では遮蔽材を薄肉
に加工することが困難であるため、非銅部の断面積が増
大し、非銅の臨界電流密度（Ｊｃ）が見掛け上減少す
る。これを改善するために遮蔽材シートをパイプ状に溶
接することも考えられるが、この場合には複合体の加工
中に溶接部が破断し易いという問題を生ずる。That is, since it is difficult to process the shielding material into a thin wall by the above method (a), the cross-sectional area of the non-copper portion increases and the non-copper critical current density (Jc) apparently decreases. .. In order to improve this, it is possible to weld the shielding material sheet in a pipe shape, but in this case, there is a problem that the welded portion is easily broken during processing of the composite.
【００１２】また、マトリックスは通常Ｎｂ線やＮｂ管
を埋め込んだ断面六角形の複合線の多数本を、その側面
を当接して集合し、これを金属管の内部に収容して形成
されるが、上記（ロ）の方法では、金属管の内側に遮蔽
材を配置することが困難であり、金属管の外側に遮蔽材
を配置した場合には非銅の臨界電流密度が見掛け上減少
するという難点がある。The matrix is usually formed by assembling a large number of Nb wires or composite wires having a hexagonal cross section in which Nb tubes are embedded, with their side surfaces abutting, and accommodating them inside a metal tube. In the above method (b), it is difficult to arrange the shielding material inside the metal tube, and when the shielding material is arranged outside the metal tube, the non-copper critical current density apparently decreases. There are difficulties.
【００１３】さらに、上記（ハ）の方法では複合管の加
工が難しいという難点がある。Further, the above method (c) has a drawback that it is difficult to process the composite pipe.
【００１４】本発明は以上の問題を解決するためになさ
れたもので、内部に薄肉の遮蔽層を有し、外側に安定化
材を配置した複合管を容易に製造することのできる方法
を提供することその目的とする。The present invention has been made to solve the above problems, and provides a method capable of easily producing a composite pipe having a thin shielding layer inside and a stabilizing material arranged outside. The purpose is to do.
【００１５】[0015]
【課題を解決するための手段】上記目的を達成するため
に、本発明の複合管の製造方法は、純銅または純アルミ
ニウムからなる金属管Ａと、この金属管Ａの内径より小
さな外径を有する金属管Ｂを用意し、前記金属管Ｂの外
側に高融点材料からなるシート状部材を重ね巻きした
後、この外側に前記金属管Ａを配置し、次いで熱間等方
圧加圧処理を施すものである。In order to achieve the above object, the method for producing a composite pipe of the present invention has a metal pipe A made of pure copper or pure aluminum and an outer diameter smaller than the inner diameter of the metal pipe A. A metal tube B is prepared, a sheet-like member made of a high melting point material is wound around the outside of the metal tube B, the metal tube A is arranged on the outside, and then hot isostatic pressing is performed. It is a thing.
【００１６】上記発明における金属管Ａは、安定化材と
して用いられるため、できるだけ純度の高いものを使用
することが好ましい。Since the metal tube A in the above invention is used as a stabilizing material, it is preferable to use a metal tube having a purity as high as possible.
【００１７】また、金属管Ｂは、この内部に収容される
複合部材と一体化してマトリックスを形成するため、複
合部材のマトリックスと同一の材料が一般に用いられ
る。Since the metal tube B is integrated with the composite member housed inside to form a matrix, the same material as the matrix of the composite member is generally used.
【００１８】この金属管Ｂの外側に重ね巻きされるシー
ト状部材は、遮蔽層を形成するため、Ｎｂ，Ｔａ，Ｖ等
の高融点材料が用いられ、このシート状部材を金属管Ｂ
の外側にハーフラップ巻き、あるいは多重巻きして金属
管Ａの内部に収容する。The sheet-shaped member wound on the outer side of the metal tube B is made of a high melting point material such as Nb, Ta, or V in order to form a shielding layer.
It is housed inside the metal tube A after being half-wrapped or multi-wrapped on the outside.
【００１９】その後、金属管Ａと金属管Ｂの間隙を真空
引きしながらその両端部を溶接した後、熱間等方圧加圧
処理（ＨＩＰ処理）を施す。After that, both ends of the metal tube A and the metal tube B are welded while being evacuated, and then hot isostatic pressing (HIP processing) is performed.
【００２０】上記のＨＩＰ処理は、例えば温度３００〜
１０００℃、圧力５００〜２０００ｋｇｆ／ｃｍ2 で３
０〜１２０ｍｉｎ間施される。The above HIP processing is performed at a temperature of, for example, 300 to
3 at 1000 ° C and pressure of 500 to 2000 kgf / cm 2 .
It is applied for 0 to 120 minutes.
【００２１】[0021]
【作用】上記構成により、本発明による複合管は、その
加工方法が容易であり、かつ薄肉の遮蔽層と安定化材と
が一体化されているため、その内部に複合線の多数本を
収容して、マトリックスの外側に遮蔽材を介して安定化
材を配置した構造の多芯超電導線を容易に製造すること
ができる。With the above structure, the composite pipe according to the present invention is easy to process, and the thin shielding layer and the stabilizing material are integrated, so that a large number of composite wires can be accommodated therein. Thus, a multicore superconducting wire having a structure in which a stabilizing material is arranged outside the matrix via a shielding material can be easily manufactured.
【００２２】[0022]
【実施例】以下本発明の一実施例について説明する。EXAMPLE An example of the present invention will be described below.
【００２３】図１に示すように、外径φ７８mm，内径φ
７６mmのＣｕ管Ｂの外周に厚さ０．２mmのＴａシート１
をハーフラップ巻きし、これを外径φ９０mm，内径φ８
０mmのＣｕ管Ａ内に挿入した後、Ｃｕ管ＡとＢとの両端
部をエレクトロンビーム溶接して、その内部を真空に保
持した。As shown in FIG. 1, outer diameter φ78 mm, inner diameter φ
0.2 mm thick Ta sheet 1 on the outer circumference of the 76 mm Cu tube B
Is wrapped in half wrap, and the outer diameter is 90 mm and the inner diameter is 8
After inserting into the Cu pipe A of 0 mm, both ends of the Cu pipes A and B were electron beam welded and the inside was kept in vacuum.
【００２４】次いで、これに６００℃で１０００ｋｇｆ
／ｃｍ2 の圧力を５０分間印加してＨＩＰ処理を施し，
Ｃｕ管Ａ、ＢとＴａシートとの間隙を除去した。Then, this is heated to 600 kg at 1000 kgf.
HIP treatment by applying a pressure of / cm 2 for 50 minutes,
The gap between the Cu tubes A and B and the Ta sheet was removed.
【００２５】このようにして得られた複合管を用いて、
以下のブロンズ法により多芯超電導線を製造した。Using the composite tube thus obtained,
A multifilamentary superconducting wire was manufactured by the following bronze method.
【００２６】Ｎｂ線の外側にＣｕ−１３．０wt％Ｓｎ合
金を配置して冷間加工を施し、対辺間距離２．１３mmの
断面六角形の複合線を製造した。A Cu-13.0 wt% Sn alloy was placed on the outside of the Nb wire and subjected to cold working to manufacture a composite wire having a hexagonal cross section with a distance between opposite sides of 2.13 mm.
【００２７】この複合線の（Ｃｕ−Ｓｎ合金）：Ｎｂの
比は２．０であった。The (Cu-Sn alloy): Nb ratio of this composite wire was 2.0.
【００２８】次いで、この複合線の１２００本を上記の
複合管の内部にその側面を当接して充填した後、その両
端に先端部材および後端部材をエレクトロンビーム溶接
してビレットを形成し、これに静水圧押出加工を施して
外径φ４３mmの複合体を製造した。Next, 1200 pieces of this composite wire are filled inside the above-mentioned composite tube by abutting the side surfaces thereof, and then the front end member and the rear end member are electron beam welded to both ends thereof to form a billet. Was subjected to hydrostatic extrusion to produce a composite having an outer diameter of 43 mm.
【００２９】この複合体に伸線加工を施して外径φ０．
３mmの線材を製造した後、７００℃で１００時間の熱処
理を施し、多芯超電導線を製造した。This composite was drawn to have an outer diameter of φ0.
After manufacturing a wire having a thickness of 3 mm, a heat treatment was performed at 700 ° C. for 100 hours to manufacture a multicore superconducting wire.
【００３０】このようにして得られた超電導線は、フィ
ラメント径φ４μｍ，非銅のＪｃ＝６００Ａ／mm
2 （４．２Ｋ，１２Ｔ）の値を示し、かつＴａシートの
破損は認められず、Ｃｕ管Ａ、即ち安定化材の残留抵抗
比（ＲＲＲ；室温の抵抗値／臨界温度直上の抵抗値）は
２００の値を示した。The superconducting wire thus obtained has a filament diameter of 4 μm and a non-copper Jc of 600 A / mm.
2 (4.2K, 12T), no damage to the Ta sheet was observed, and the residual resistance ratio of Cu tube A, that is, the stabilizing material (RRR; room temperature resistance value / resistance value just above the critical temperature) Showed a value of 200.
【００３１】[0031]
【発明の効果】以上のべたように本発明の複合管の製造
方法によれば、薄肉の遮蔽材と安定化材とが一体化され
ているため、多芯構造の安定化超電導線を製造する際の
複合体を容易に製作することができる。As described above, according to the method of manufacturing a composite pipe of the present invention, a thin shielding material and a stabilizing material are integrated, so that a stabilized superconducting wire having a multi-core structure is manufactured. The composite body at this time can be easily manufactured.
【００３２】また、管状に製作することが困難なＮｂ，
Ｔａ，Ｖ等の高融点材料からなる遮蔽材を実質的に管状
に配置することができ、安定化材と遮蔽材との断面積比
を容易に選択することも可能になる。Further, Nb, which is difficult to manufacture in a tubular shape,
A shielding material made of a high melting point material such as Ta or V can be arranged in a substantially tubular shape, and the cross-sectional area ratio between the stabilizing material and the shielding material can be easily selected.
【図１】本発明の複合管の製造方法示す概略断面図FIG. 1 is a schematic sectional view showing a method for producing a composite pipe of the present invention.
１…Ｔａシート Ａ…Ｃｕ管 Ｂ…Ｃｕ管 1 ... Ta sheet A ... Cu tube B ... Cu tube
フロントページの続き (72)発明者 熊野 智幸 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 野呂 治人 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 遠藤 秀行 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 大垣 俊久 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 志賀 紀幸 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 青木 伸夫 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内Front page continuation (72) Inventor Tomoyuki Kumano 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Within Showa Electric Wire & Cable Co., Ltd. (72) Haruhito Noro 2-chome Oda-ei, Kawasaki-ku, Kanagawa Prefecture No. 1 Showa Cable Denki Co., Ltd. (72) Inventor Hideyuki Endo 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Kanagawa Prefecture (72) Inventor Toshihisa Ogaki Oda, Kawasaki-ku, Kawasaki-shi, Kanagawa Sakae 2-1-1 No. 1 Showa Cable Electric Co., Ltd. (72) Inventor Noriyuki Shiga 2-1-1 1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Kanagawa Prefecture Nobuo Aoki Kawasaki Kanagawa 2-1-1 Odaei, Kawasaki-ku, Ichi, Showa Electric Wire & Cable Co., Ltd.
Claims (1)
管Ａと、この金属管Ａの内径より小さな外径を有する金
属管Ｂを用意し、前記金属管Ｂの外側に高融点材料から
なるシート状部材を重ね巻きした後、この外側に前記金
属管Ａを配置し、次いで熱間等方圧加圧処理を施すこと
を特徴とする複合管の製造方法。1. A metal pipe A made of pure copper or pure aluminum and a metal pipe B having an outer diameter smaller than the inner diameter of the metal pipe A are prepared, and a sheet-like member made of a high melting point material is provided outside the metal pipe B. After lap winding, the metal tube A is arranged on the outer side, and then hot isostatic pressing treatment is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28327691A JPH05123875A (en) | 1991-10-29 | 1991-10-29 | Production of composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28327691A JPH05123875A (en) | 1991-10-29 | 1991-10-29 | Production of composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05123875A true JPH05123875A (en) | 1993-05-21 |
Family
ID=17663363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28327691A Pending JPH05123875A (en) | 1991-10-29 | 1991-10-29 | Production of composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05123875A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040007137A (en) * | 2002-07-16 | 2004-01-24 | 현대모비스 주식회사 | brazing method of pipes |
| CN110906069A (en) * | 2019-11-22 | 2020-03-24 | 西安向阳航天材料股份有限公司 | Manufacturing method of vacuum mechanical composite pipe |
-
1991
- 1991-10-29 JP JP28327691A patent/JPH05123875A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040007137A (en) * | 2002-07-16 | 2004-01-24 | 현대모비스 주식회사 | brazing method of pipes |
| CN110906069A (en) * | 2019-11-22 | 2020-03-24 | 西安向阳航天材料股份有限公司 | Manufacturing method of vacuum mechanical composite pipe |
| CN110906069B (en) * | 2019-11-22 | 2021-06-08 | 西安向阳航天材料股份有限公司 | Manufacturing method of vacuum mechanical composite pipe |
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