JPH028564Y2 - - Google Patents
Info
- Publication number
- JPH028564Y2 JPH028564Y2 JP15165183U JP15165183U JPH028564Y2 JP H028564 Y2 JPH028564 Y2 JP H028564Y2 JP 15165183 U JP15165183 U JP 15165183U JP 15165183 U JP15165183 U JP 15165183U JP H028564 Y2 JPH028564 Y2 JP H028564Y2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- composite billet
- billet
- hydrostatic extrusion
- metal
- 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.)
- Expired
Links
- 239000002131 composite material Substances 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 238000000886 hydrostatic extrusion Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000001125 extrusion Methods 0.000 description 14
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 3
- 229910002482 Cu–Ni Inorganic materials 0.000 description 2
- 229910017813 Cu—Cr Inorganic materials 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910017532 Cu-Be Inorganic materials 0.000 description 1
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- 229910020012 Nb—Ti Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Extrusion Of Metal (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は超電導線の製造に使用される静水圧押
出用超電導複合ビレツトに関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a superconducting composite billet for hydrostatic extrusion used in the production of superconducting wires.
従来から、多心構造の超電導線を効率よく製造
する方法として、静水圧押出加工によるものが知
られている。
Conventionally, hydrostatic extrusion has been known as a method for efficiently manufacturing superconducting wires having a multicore structure.
この方法においては、第１図に示すように、金
属管１中に多数本の超電導線２を収容し、その先
端および後端にそれぞれノーズを形成する先端部
材３と後端部材４で蓋をした後、その内部を真空
脱気しながら金属管１と先、後端部材３，４とを
エレクトロンビーム溶接した押出用の複合ビレツ
ト５が使用されている。 In this method, as shown in FIG. 1, a large number of superconducting wires 2 are housed in a metal tube 1, and a lid is closed with a tip member 3 and a rear end member 4, which form noses at the tip and rear ends, respectively. Thereafter, a composite billet 5 for extrusion is used in which the metal tube 1 and the leading and trailing end members 3 and 4 are electron beam welded while the inside thereof is vacuum degassed.
このような複合ビレツト５の先端部材３の材質
は、先端部材の押出圧力が超電導線２の収容され
ている複合ビレツト本体の押出圧力より低くなる
ようにその材質が選定されている。 The material of the tip member 3 of such a composite billet 5 is selected so that the extrusion pressure of the tip member is lower than the extrusion pressure of the composite billet main body in which the superconducting wire 2 is accommodated.
しかしながら、以上述べたような構造の複合ビ
レツトを用いて静水圧押出加工をする際には、複
合ビレツトの平均硬度、すなわち複合ビレツト５
の軸方向に垂直な断面における各素材の硬度をそ
の面積比において配分した値の平均値は、先端部
材３と複合ビレツト本体部分との間で大きく変化
するため、超電導線の収容されている部分が押出
ダイス近傍に達した時に押出圧力が急激に変動
し、超電導線２が金属管１を突破り先端部材が離
脱することがあつた。
However, when performing hydrostatic extrusion using a composite billet with the structure described above, the average hardness of the composite billet, that is, the composite billet 5
The average value of the hardness of each material distributed in terms of area ratio in a cross section perpendicular to the axial direction varies greatly between the tip member 3 and the composite billet main body, When the superconducting wire 2 reached the vicinity of the extrusion die, the extrusion pressure fluctuated rapidly, and the superconducting wire 2 broke through the metal tube 1, causing the tip member to separate.
このような現象は、例えば超電導線のCu比
（Cu安定化材の超電導材に対する比）が小さくな
る程生じ易く、従つてCu比の小さい多心超電導
線の静水圧押出加工が困難であつた。 For example, such a phenomenon is more likely to occur as the Cu ratio (ratio of Cu stabilizing material to superconducting material) of the superconducting wire becomes smaller, and therefore it has been difficult to hydrostatically extrude multi-core superconducting wires with a small Cu ratio. .
一方、先端部材３から後端部材４へ向かつて平
均硬度をほぼ等しくするか、あるいは徐々に増加
するように各部材の材質を選定する試みもなされ
ているが、金属管１の厚さ（これは最終製品の構
造から決定される）が薄い場合には、先端部材３
の離脱を防止することは困難であつた。 On the other hand, attempts have been made to select materials for each member so that the average hardness is approximately equal or gradually increases from the tip member 3 to the rear end member 4; (determined from the structure of the final product) is thin, the tip member 3
It was difficult to prevent the withdrawal of
本考案はかかる従来の難点を解消すべくなされ
たもので、押出加工の歩留りを向上させるととも
に、多心構造の超電導線を容易に押出することの
できる静水圧押出用超電導複合ビレツトを提供す
ることを目的とする。
The present invention has been made to solve these conventional difficulties, and provides a superconducting composite billet for hydrostatic extrusion that can improve the yield of extrusion processing and easily extrude superconducting wires with a multicore structure. With the goal.
すなわち本考案の静水圧押出用超電導複合ビレ
ツトは、多数本の超電導線を収容した金属管の両
端を先端部材および後端部材により接合密封した
押出ビレツトにおいて、前記先端部材の一部が前
記金属管内に密嵌されるとともに、その嵌入部の
後端面外周にわたつて補強用パイプを嵌合したこ
とを特徴としている。
That is, the superconducting composite billet for hydrostatic extrusion of the present invention is an extrusion billet in which both ends of a metal tube containing a large number of superconducting wires are joined and sealed by a tip member and a rear end member, and a portion of the tip member is inside the metal tube. The reinforcing pipe is fitted tightly over the outer periphery of the rear end surface of the fitting part.
本考案における金属管としては、安定化材とし
て機能するCu（OFHC）や特殊用途用にCu合金、
例えばCu−Ni合金が使用される。 The metal tube used in this invention includes Cu (OFHC), which functions as a stabilizing material, and Cu alloy for special purposes.
For example, a Cu-Ni alloy is used.
また、金属管中に収容される超電導線として
は、CuあるいはCu合金マトリツクス中に複数の
Nb、Nb−Ti合金あるいはNb管中にCu被覆Sn線
を配置した構造の化合物系の超電導線を用いるこ
とにより多心化を容易に行なうことができる。 In addition, superconducting wires housed in metal tubes include multiple wires in a Cu or Cu alloy matrix.
By using Nb, Nb-Ti alloy, or a compound-based superconducting wire having a structure in which a Cu-coated Sn wire is arranged in a Nb tube, multi-core superconducting wire can be easily achieved.
また、先、後端部材および補強用パイプとして
は、Cuの他Cu合金、例えばCu−Ni、Cu−Cr、
Cu−Be等の合金の組成を選択したものが用いら
れる。 In addition to Cu, Cu alloys such as Cu-Ni, Cu-Cr,
A selected alloy composition such as Cu-Be is used.
以下本考案の一実施例を図面を用いて説明す
る。
An embodiment of the present invention will be described below with reference to the drawings.
第２図は複合ビレツト５′の縦断面図を示した
もので、Cu安定化材よりなる管１′中には断面正
六角形に成形された超電導線２′の多数本が充填
されており、その両端が先端部材３′および後端
部材４′で蓋をされている。先端部材３′と超電導
線２′との接触部外周には補強用パイプ６′が嵌め
込まれており、、Cu管１′と先、後端部材とはエ
レクトロンビームで溶接されている。この溶接の
際には複合ビレツト５′全体が真空系の中に置か
れるため、ビレツト内部も同時に脱気され、押出
時の超電導線間の接合を容易にする。 FIG. 2 shows a longitudinal cross-sectional view of a composite billet 5', in which a tube 1' made of a Cu stabilizing material is filled with a large number of superconducting wires 2' each having a regular hexagonal cross section. Both ends thereof are covered with a front end member 3' and a rear end member 4'. A reinforcing pipe 6' is fitted around the outer periphery of the contact area between the tip member 3' and the superconducting wire 2', and the Cu tube 1' and the front and rear end members are welded using an electron beam. Since the entire composite billet 5' is placed in a vacuum system during this welding, the inside of the billet is also evacuated at the same time, making it easier to join the superconducting wires during extrusion.
実施例
外径49mmφ、内径43.5mmφのCu管中に外径43mm
φ、内径41mmφのNb管を収容し、このNb管中に
断面正六角形のCu−13wt％Sn合金被覆Nb線
（Cu−Sn合金／Nb＝2.0）の301本を充填し、先
端部材を硬度Hv＝110のCu−Cr合金で形成した。Example: Outer diameter 43mm in Cu tube with outer diameter 49mmφ and inner diameter 43.5mmφ
A Nb tube with an inner diameter of 41 mmφ is housed, and 301 pieces of Cu-13wt%Sn alloy coated Nb wire (Cu-Sn alloy/Nb=2.0) with a regular hexagonal cross section are filled in this Nb tube, and the tip member is hardened. It was made of a Cu-Cr alloy with Hv=110.
この場合の複合線の充填されている部分の平均
硬度はHv＝120であつた。 In this case, the average hardness of the filled portion of the composite wire was Hv=120.
一方、この複合ビレツトの先端部材の後端側外
周に外径43mmφ、内径33mmφの補強用Cuパイプ
を嵌合した複合ビレツトを作成し、これらの複合
ビレツトを33mmφのダイスを用いて静水圧押出加
工した結果、前者の複合ビレツトにおいては、先
端部材の最大押出圧力5800Kg／cm2から複合線の充
填されている部分に達した時の6200Kg／cm2へ上昇
し、同時に複合線がCu管を突破つて押出不可能
となつた。 On the other hand, a reinforcing Cu pipe with an outer diameter of 43 mmφ and an inner diameter of 33 mmφ was fitted to the outer periphery of the rear end of the tip member of this composite billet to create a composite billet, and these composite billets were hydrostatically extruded using a 33 mmφ die. As a result, in the former composite billet, the maximum extrusion pressure of the tip member increased from 5800 Kg/cm 2 to 6200 Kg/cm 2 when it reached the part where the composite wire was filled, and at the same time the composite wire broke through the Cu pipe. It became impossible to extrude.
一方、後者の複合ビレツトの場合には、押出圧
力6200Kg／cm2で複合ビレツトの全長にわたり安定
した押出ができた。 On the other hand, in the case of the latter composite billet, stable extrusion was possible over the entire length of the composite billet at an extrusion pressure of 6200 kg/cm 2 .
以上説明したように本考案によれば、多心構造
の超電導線の静水圧押出加工に際して、押出圧力
の変動による複合ビレツトの破断を防止すること
ができ安定した押出圧力を行なうことができる。
As explained above, according to the present invention, during hydrostatic extrusion processing of a multicore superconducting wire, it is possible to prevent the composite billet from breaking due to fluctuations in extrusion pressure, and to perform stable extrusion pressure.
第１図は従来の押出ビレツトの縦断面図、第２
図は本考案の静水圧押出用超電導複合ビレツトの
縦断面図である。
１……金属管、２，２′……超電導線、３，
３′……先端部材、４，４′……後端部材、５，
５′……複合ビレツト、６′……補強用パイプ。
Figure 1 is a vertical cross-sectional view of a conventional extrusion billet;
The figure is a longitudinal sectional view of a superconducting composite billet for hydrostatic extrusion according to the present invention. 1... Metal tube, 2, 2'... Superconducting wire, 3,
3'... Tip member, 4, 4'... Rear end member, 5,
5'...Composite billet, 6'...Reinforcement pipe.
Claims (1)
先端部材および後端部材により接合密封した押
出ビレツトにおいて、前記先端部材の一部が前
記金属管内に密嵌されるとともに、その嵌入部
の後端面外周にわたつて補強用パイプを嵌合し
たことを特徴とする静水圧押出用超電導複合ビ
レツト。 (2) 金属管は、CuあるいはCu合金より成る実用
新案登録請求の範囲第１項記載の静水圧押出用
超電導複合ビレツト。 (3) 超電導線は、金属マトリツクス中に超電導材
あるいは熱処理によつて超電導材を形成する金
属を埋め込んで成る実用新案登録請求の範囲第
１項記載の静水圧押出用超電導複合ビレツト。 (4) 超電導材あるいは熱処理によつて超電導材を
形成する金属は、金属マトリツクス中に複数本
埋め込まれてなる実用新案登録請求の範囲第３
項記載の静水圧押出用超電導複合ビレツト。 (5) 金属マトリツクスはCuあるいはCu合金より
なる実用新案登録請求の範囲第３項または第４
項記載の静水圧押出用超電導複合ビレツト。[Claims for Utility Model Registration] (1) In an extruded billet that is joined and sealed by a tip member and a rear end member at both ends of a metal tube containing a large number of superconducting wires, a part of the tip member is hermetically sealed inside the metal tube. A superconducting composite billet for hydrostatic extrusion, characterized in that a reinforcing pipe is fitted over the outer periphery of the rear end surface of the fitting part. (2) The superconducting composite billet for hydrostatic extrusion according to claim 1, wherein the metal tube is made of Cu or Cu alloy. (3) The superconducting composite billet for hydrostatic extrusion according to claim 1, wherein the superconducting wire is a superconducting material or a metal forming a superconducting material by heat treatment embedded in a metal matrix. (4) A superconducting material or a metal that forms a superconducting material by heat treatment is a utility model registration claim 3 in which a plurality of superconducting materials are embedded in a metal matrix.
A superconducting composite billet for hydrostatic extrusion as described in . (5) The metal matrix is made of Cu or Cu alloy.
A superconducting composite billet for hydrostatic extrusion as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15165183U JPS6060102U (en) | 1983-09-30 | 1983-09-30 | Superconducting composite billet for hydrostatic extrusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15165183U JPS6060102U (en) | 1983-09-30 | 1983-09-30 | Superconducting composite billet for hydrostatic extrusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6060102U JPS6060102U (en) | 1985-04-26 |
| JPH028564Y2 true JPH028564Y2 (en) | 1990-03-01 |
Family
ID=30335999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15165183U Granted JPS6060102U (en) | 1983-09-30 | 1983-09-30 | Superconducting composite billet for hydrostatic extrusion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6060102U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0821733B2 (en) * | 1988-11-11 | 1996-03-04 | 株式会社日立製作所 | Method for manufacturing superconducting wire for thermal permanent current switch, and superconducting wire |
-
1983
- 1983-09-30 JP JP15165183U patent/JPS6060102U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6060102U (en) | 1985-04-26 |
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