CN107170526A - The preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three - Google Patents
The preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three Download PDFInfo
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- CN107170526A CN107170526A CN201710296926.3A CN201710296926A CN107170526A CN 107170526 A CN107170526 A CN 107170526A CN 201710296926 A CN201710296926 A CN 201710296926A CN 107170526 A CN107170526 A CN 107170526A
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- Prior art keywords
- copper
- niobium
- cunb
- oxygen
- jacket
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- 239000010955 niobium Substances 0.000 title claims abstract description 46
- 229910052758 niobium Inorganic materials 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 13
- IIQVQTNFAKVVCM-UHFFFAOYSA-N copper niobium Chemical compound [Cu][Nb][Nb] IIQVQTNFAKVVCM-UHFFFAOYSA-N 0.000 title claims abstract description 13
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 57
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005476 soldering Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000010894 electron beam technology Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 19
- 238000003466 welding Methods 0.000 abstract description 4
- 229910052718 tin Inorganic materials 0.000 description 7
- 239000004744 fabric Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention discloses the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three, non-oxygen copper bar is processed as outer six side's inner circle thin-wall copper pipes first；Then Nb rods are fitted into six side's copper pipes, and six side's copper pipes is fitted into oxygen-free copper jacket, oxygen-free copper jacket central area is put and non-oxygen copper bar, soldering and sealing, obtained CuNb and be combined jacket；CuNb is finally combined jacket heating, insulation, extruding obtains CuNb compound bars.The inventive method obtains CuNb compound bars by the way that the tiny Nb rods of Initial Grain Size are loaded into the assembling of the side's copper pipe of thin-walled six, welding, extruded, eliminate the processing of CuNb single rods, avoid because Nb ingot Initial Grain Sizes are thick, uneven microstructure after extruding, the problem of causing stretching broken string, disconnected core during superconducting wire following process.Direct-assembling CuNb is combined jacket simultaneously, improves efficiency, reduces the quality risk of process.
Description
Technical field
The invention belongs to superconductor processing technique field, and in particular to a kind of tin superconducting wire of high critical current densities niobium three
The preparation method of timber-used copper niobium compound bar.
Background technology
High critical current densities Nb3Sn superconducting wires are the important materials for manufacturing large-scale particle accelerator, at present in the world
The high critical current densities Nb being delivered for use in batches in each Scientific Engineering3The J of Sn superconducting wirescUnder the conditions of 12T, 4.2K
2500A/mm can be reached2More than.Obtain stable high critical current densities Nb3The long line technologies of preparing of Sn and mass production energy
Power, is that the large-scale accelerator of manufacture needs one of important foundation problem of materials of solution.
Influence Nb3The principal element of Sn superconducting wire critical current densities is its superconducting phase content and Grain boundary pinning center
Density, in order to improve Nb3The current capacity of Sn superconducting wires is, it is necessary to greatly improve Nb, Sn content in wire rod to obtain height
Nb3The volume fraction of Sn superconducting phases.Nb ingots can be generally fitted into Cu jackets weld, extrude, stretching obtain CuNb single rods,
The CuNb compound bars of high Nb contents are obtained by series of processes such as assembling, welding, extruding, drawings again.But at the beginning of being due to Nb ingots
Beginning crystallite dimension is larger, is difficult to uniformly crush during following process, causes superconducting wire drawing process interrupt line and disconnected core
Situations such as occur, on the one hand reduce wire rod processing yield rate, on the other hand govern the raising of superconducting wire current capacity.
The content of the invention
It is an object of the invention to provide a kind of preparation of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three
Method, solves Nb core filaments uneven microstructure in CuNb compound bars made from existing method, causes in superconducting wire process
The problem of stretching broken string.
The technical solution adopted in the present invention is, the system of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three
Preparation Method, specifically includes following steps：
Step 1, non-oxygen copper bar is processed as outer six side's inner circle thin-wall copper pipes；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, then arranged six side's copper pipes by six sides
Cloth stacking is fitted into oxygen-free copper jacket, and oxygen-free copper jacket central area is put and six side's copper pipe specification identical non-oxygen copper bars, two
End adds the electron beam soldering and sealing of copper lid, obtains CuNb and is combined jacket；
Step 3, CuNb step 2 obtained is combined jacket heating, after insulation, and extruding obtains CuNb compound bars.
The features of the present invention is also resided in,
The side's opposite side size of copper pipe six is 5mm~15mm in step 1, and diameter of bore is Φ 4mm~Φ 14mm, wall thickness 0.2mm
~1mm, length is 300mm~800mm.
Nb rods and six side's copper pipe quantity are 150~800, a diameter of Φ 150mm~Φ of oxygen-free copper jacket in step 2
300mm。
The ratio of Nb rods quantity and non-oxygen copper bar quantity is 1 in step 2:1~2:1.
Heating-up temperature is 550 DEG C~650 DEG C in step 3, and soaking time is 1~4 hour.
The beneficial effects of the invention are as follows a kind of preparation of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three
Method, by assembling, welding by the tiny Nb rods loading thin-walled six side's copper pipe of Initial Grain Size, extruding obtains CuNb and is combined
Rod, eliminates the processing of CuNb single rods, it is to avoid because Nb ingot Initial Grain Sizes are thick, uneven microstructure after extruding leads
During cause superconducting wire following process the problem of stretching broken string, disconnected core.Direct-assembling CuNb is combined jacket simultaneously, improves effect
Rate, reduces the quality risk of process.
Brief description of the drawings
Fig. 1 is the schematic cross-section that CuNb of the present invention is combined jacket；
Fig. 2 is Nb rods and six side's copper pipes assembling partial enlarged drawing.
In figure, 1. oxygen-free copper jackets, 2. non-oxygen copper bars, 3.Nb rods and six side's copper pipes, 4. 6 side's copper pipes, 5.Nb rods.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of high critical current densities Nb of the present invention3The Sn superconducting wires preparation method of CuNb compound bars, is specifically included
Following steps：
Step 1, non-oxygen copper bar is obtained into length for 300mm~800mm by processes such as extruding, drawing, sawings, opposite side chi
Very little is 5mm~15mm, and diameter of bore is Φ 4mm~Φ 14mm outer six sides inner circle thin-wall copper pipe；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, quantity is 150~800, then by six
Side's arrangement stacking is fitted into oxygen-free copper jacket, a diameter of Φ 150mm~Φ 300mm of jacket, and central area is put and six side's copper pipes
Specification identical non-oxygen copper bar, two ends add the electron beam soldering and sealing of copper lid, obtain CuNb and are combined jacket；Resulting CuNb is combined
Wrapping structure is as shown in figure 1, wherein load Nb rods therein and six side's copper pipe package assemblies are as shown in Figure 2.Nb rods quantity and nothing
The ratio of oxygen copper rod quantity is 1:1~2:1.
Step 3, CuNb step 2 obtained is combined jacket and is heated to 550 DEG C~650 DEG C, and insulation is extruded after 1~4 hour
Obtain CuNb compound bars.
The preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three of the present invention, it is initial brilliant by inciting somebody to action
The tiny Nb rods loading thin-walled six side's copper pipe assembling of particle size, welding, extruding obtain CuNb compound bars, eliminate CuNb single rods
Processing, it is to avoid because Nb ingot Initial Grain Sizes are thick, uneven microstructure after extruding causes superconducting wire following process mistake
In journey the problem of stretching broken string, disconnected core.Direct-assembling CuNb is combined jacket simultaneously, improves efficiency, reduces process
Quality risk.
Embodiment 1
Step 1, non-oxygen copper bar is obtained into length for 300mm by processes such as extruding, drawing, sawings, opposite side size is
5mm, diameter of bore is Φ 4mm outer six sides inner circle thin-wall copper pipe；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, quantity is 150, then arranged by six sides
Cloth stacking is fitted into oxygen-free copper jacket, a diameter of Φ 150mm of jacket, and central area is put and six side's copper pipe specification identical anaerobics
Copper rod, non-oxygen copper bar quantity is 100, and two ends add the electron beam soldering and sealing of copper lid, obtains CuNb and is combined jacket；
Step 3, the CuNb that step 2 is obtained is combined jacket and is heated to 580 DEG C, and extruding obtains CuNb and answered after insulation 2 hours
Close rod.
Embodiment 2
Step 1, non-oxygen copper bar is obtained into length for 800mm by processes such as extruding, drawing, sawings, opposite side size is
10mm, diameter of bore is Φ 9mm outer six sides inner circle thin-wall copper pipe；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, quantity is 800, then arranged by six sides
Cloth stacking is fitted into oxygen-free copper jacket, a diameter of Φ 300mm of jacket, and central area is put and six side's copper pipe specification identical anaerobics
Copper rod, non-oxygen copper bar quantity is 400, and two ends add the electron beam soldering and sealing of copper lid, obtains CuNb and is combined jacket；
Step 3, the CuNb that step 2 is obtained is combined jacket and is heated to 650 DEG C, and extruding obtains CuNb and answered after insulation 1 hour
Close rod.
Embodiment 3
Step 1, non-oxygen copper bar is obtained into length for 500mm by processes such as extruding, drawing, sawings, opposite side size is
15mm, diameter of bore is Φ 14mm outer six sides inner circle thin-wall copper pipe；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, quantity is 200, then arranged by six sides
Cloth stacking is fitted into oxygen-free copper jacket, a diameter of Φ 270mm of jacket, and central area is put and six side's copper pipe specification identical anaerobics
Copper rod, non-oxygen copper bar quantity is 200, and two ends add the electron beam soldering and sealing of copper lid, obtains CuNb and is combined jacket；
Step 3, the CuNb that step 2 is obtained is combined jacket and is heated to 550 DEG C, and extruding obtains CuNb and answered after insulation 4 hours
Close rod.
Claims (5)
1. the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three, it is characterised in that specifically include
Following steps：
Step 1, non-oxygen copper bar is processed as outer six side's inner circle thin-wall copper pipes；
Step 2, Nb rods are fitted into six side's copper pipes that the step 1 after cleaning is obtained, then by six side's copper pipes by six sides arrangement heap
Pile is fitted into oxygen-free copper jacket, oxygen-free copper jacket central area put with six side's copper pipe specification identical non-oxygen copper bars, two ends add
Upper copper lid electron beam soldering and sealing, obtains CuNb and is combined jacket；
Step 3, CuNb step 2 obtained is combined jacket heating, after insulation, and extruding obtains CuNb compound bars.
2. the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three according to claim 1,
Characterized in that, the side's opposite side size of copper pipe six is 5mm~15mm in the step 1, diameter of bore is Φ 4mm~Φ 14mm, wall
Thick 0.2mm~1mm, length is 300mm~800mm.
3. the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three according to claim 1,
Characterized in that, Nb rods and six side's copper pipe quantity are 150~800, a diameter of Φ 150mm of oxygen-free copper jacket in the step 2
~Φ 300mm.
4. the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three according to claim 1,
Characterized in that, the ratio of Nb rods quantity and non-oxygen copper bar quantity is 1 in step 2:1~2:1.
5. the preparation method of the tin superconducting wire timber-used copper niobium compound bar of high critical current densities niobium three according to claim 1,
Characterized in that, heating-up temperature is 550 DEG C~650 DEG C in the step 3, soaking time is 1~4 hour.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296926.3A CN107170526B (en) | 2017-04-28 | 2017-04-28 | Preparation method of copper-niobium composite rod for high critical current density niobium-tin superconducting wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296926.3A CN107170526B (en) | 2017-04-28 | 2017-04-28 | Preparation method of copper-niobium composite rod for high critical current density niobium-tin superconducting wire |
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| CN107170526A true CN107170526A (en) | 2017-09-15 |
| CN107170526B CN107170526B (en) | 2020-03-27 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556214A (en) * | 2018-06-04 | 2019-12-10 | 西部超导材料科技股份有限公司 | Nb 3 Sn strand preheating treatment method |
| CN110580984A (en) * | 2018-06-11 | 2019-12-17 | 西部超导材料科技股份有限公司 | Preparation method of copper-clad bronze/Nb composite rod |
| CN112037996A (en) * | 2020-09-04 | 2020-12-04 | 西部超导材料科技股份有限公司 | Preparation method of CuNb single core rod for superconducting wire |
| CN113400665A (en) * | 2021-06-11 | 2021-09-17 | 上海达华药业有限公司 | Method for loading medicine core rod into tube |
| CN110911047B (en) * | 2019-11-15 | 2021-10-01 | 西部超导材料科技股份有限公司 | Preparation method of Bi-2212 superconducting wire |
| CN114694894A (en) * | 2022-05-20 | 2022-07-01 | 西部超导材料科技股份有限公司 | Short-distance diffusion type Nb3Preparation method of Sn superconducting wire |
| CN115295242A (en) * | 2022-09-30 | 2022-11-04 | 西部超导材料科技股份有限公司 | Preparation method of niobium-tin superconducting strand with high critical current density |
| CN116779240A (en) * | 2023-08-16 | 2023-09-19 | 西安聚能超导线材科技有限公司 | Preparation method of magnesium diboride superconducting wire and magnesium diboride superconducting wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110556214A (en) * | 2018-06-04 | 2019-12-10 | 西部超导材料科技股份有限公司 | Nb 3 Sn strand preheating treatment method |
| CN110580984A (en) * | 2018-06-11 | 2019-12-17 | 西部超导材料科技股份有限公司 | Preparation method of copper-clad bronze/Nb composite rod |
| CN110580984B (en) * | 2018-06-11 | 2021-08-03 | 西部超导材料科技股份有限公司 | Preparation method of copper-clad bronze/Nb composite rod |
| CN110911047B (en) * | 2019-11-15 | 2021-10-01 | 西部超导材料科技股份有限公司 | Preparation method of Bi-2212 superconducting wire |
| CN112037996A (en) * | 2020-09-04 | 2020-12-04 | 西部超导材料科技股份有限公司 | Preparation method of CuNb single core rod for superconducting wire |
| CN113400665A (en) * | 2021-06-11 | 2021-09-17 | 上海达华药业有限公司 | Method for loading medicine core rod into tube |
| CN114694894A (en) * | 2022-05-20 | 2022-07-01 | 西部超导材料科技股份有限公司 | Short-distance diffusion type Nb3Preparation method of Sn superconducting wire |
| CN114694894B (en) * | 2022-05-20 | 2023-10-03 | 西部超导材料科技股份有限公司 | Short-range diffusion type Nb 3 Preparation method of Sn superconducting wire |
| CN115295242A (en) * | 2022-09-30 | 2022-11-04 | 西部超导材料科技股份有限公司 | Preparation method of niobium-tin superconducting strand with high critical current density |
| CN115295242B (en) * | 2022-09-30 | 2023-01-24 | 西部超导材料科技股份有限公司 | Preparation method of niobium tri-tin superconducting stranded wire with high critical current density |
| CN116779240A (en) * | 2023-08-16 | 2023-09-19 | 西安聚能超导线材科技有限公司 | Preparation method of magnesium diboride superconducting wire and magnesium diboride superconducting wire |
| CN116779240B (en) * | 2023-08-16 | 2023-10-20 | 西安聚能超导线材科技有限公司 | Preparation method of magnesium diboride superconducting wire and magnesium diboride superconducting wire |
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