CN110223803A - A kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot - Google Patents
A kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot Download PDFInfo
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- CN110223803A CN110223803A CN201811409963.1A CN201811409963A CN110223803A CN 110223803 A CN110223803 A CN 110223803A CN 201811409963 A CN201811409963 A CN 201811409963A CN 110223803 A CN110223803 A CN 110223803A
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- Prior art keywords
- ingot
- superconducting wire
- stick
- preparation
- composite ingot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- 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
Abstract
The present invention relates to a kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot, comprising: according to the diameter of Nb plug, quantity, arrangement processing location hole in multicore composite ingot on oxygen-free copper heelpiece；It will be in the location hole of the oxygen-free copper heelpiece after the Nb stick insertion cleaning after cleaning；The oxygen-free copper heelpiece for being inserted with Nb stick is put into casting die bottom, the copper melt of fusing is cast to mould inside, until being higher than Nb stick and there are until feeding head；Ingot casting after cooling is demoulded, end riser is fallen in sawing, with lathe by ingot casting surface vehicle light, obtains CuNb composite ingot.A kind of Nb of the present invention3The preparation method of Sn superconducting wire multicore composite ingot is inserted with the oxygen-free copper heelpiece of Nb stick by being put into when anaerobic copper ingot is cast in mold bottom, and direct pouring obtains CuNb composite ingot, eliminate the series of processes such as drilling, assembling, welding, Nb is greatly reduced in simple process, high yield rate3The manufacturing cost of Sn superconducting wire.
Description
Technical field
The invention belongs to superconductor processing method technical fields, and in particular to a kind of Nb3Sn superconducting wire is multiple with multicore
Close the preparation method of ingot.
Background technique
Nb3Sn superconducting wire is presently the most practical one of low temperature superconducting material, is the ideal material for manufacturing high field magnet
Material.Nb3The preparation process of Sn superconducting wire mainly has Properlies of Bronze Route, Nei Xifa and powder-in-tube technique.Nei Xifa Nb3Sn multicore is compound
There are mainly two types of the preparation methods of ingot, and one kind first passing around assembling, extruding, drawing obtain CuNb single stick, using primary group
Dress obtains multicore composite ingot, complex process, and yield rate is low.Another kind is to bore a certain number of circular holes on anaerobic copper ingot to obtain
Porous copper ingot, then Nb stick is inserted into porous copper ingot and obtains multicore composite ingot.Wherein Authorization Notice No. is the hair of CN104123998
Bright patent discloses a kind of interior tin method Nb3The preparation method of Sn multicore CuNb compound bar, comprising the following steps: choose oxygen-free copper
Ingot bores the equally distributed several through-holes of multilayer along billet length direction as billet, using the method for depth drill, obtains Porous Cu
Ingot；By in the porous copper ingot through-hole after the Nb stick insertion cleaning after cleaning, the Nb stick in each layer through-hole is distributed in ladder, in Nb stick
It is concordant with porous copper ingot both ends that Cu stick is inserted at both ends, in addition capping soldering and sealing, obtains the compound jacket of multicore；It is squeezed after finally heated
Pressure to get.But this method simple process, yield rate are stablized, but high to borehole accuracy requirement, are easy to appear borehole throw and lead
The case where causing entire billet to scrap, so that porous copper ingot is expensive.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of existing technologies, a kind of Nb is provided3Sn superconducting wire multicore composite ingot
Preparation method.
A kind of Nb of the invention3The Sn superconducting wire preparation method of multicore composite ingot, includes the following steps:
Step 1): according to the diameter of Nb plug, quantity, arrangement processing positioning in multicore composite ingot on oxygen-free copper heelpiece
Hole；
Step 2): in the location hole for the oxygen-free copper heelpiece that the step 1) after the Nb stick insertion cleaning after cleaning is obtained；
Step 3): the oxygen-free copper heelpiece for being inserted with Nb stick that step 2) is obtained is put into casting die bottom, by the copper of fusing
Melt is cast to mould inside, until being higher than Nb stick and there are until feeding head and cooling；
Step 4): the ingot casting that step 3) after cooling obtains is demoulded, and end riser is fallen in sawing, with lathe by ingot casting
Surface vehicle light is to get CuNb composite ingot.
The present invention is inserted with the oxygen-free copper heelpiece of Nb stick by being put into when anaerobic copper ingot is cast in crucible bottom, direct pouring
CuNb composite ingot is obtained, the series of processes such as drilling, assembling, welding, simple process are eliminated, high yield rate is greatly reduced
Nb3The manufacturing cost of Sn superconducting wire.
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, nothing in the step 1)
For oxygen copper heelpiece with a thickness of 50mm~100mm, diameter is Φ 160mm~Φ 310mm.
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, the positioning hole depth
Degree is 20mm~50mm, and diameter is Φ 3mm~Φ 15mm, and quantity is 150~800.
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, Nb in the step 2)
Stick, diameter is corresponding with quantity with the diameter of quantity and location hole, and the length of the Nb stick is 300mm~700mm.
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, copper in the step 3)
The teeming height of melt is higher than Nb stick 100~200mm of top.
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, copper in the step 3)
The cast temperature of solution is 1100~1200 DEG C, and casting time 2~5 minutes, mold was water cooled copper mould, and water pressure of cooling water is not less than
0.2MPa。
Further, a kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, vehicle in the step 4)
Finished product ingot diameters after light are Φ 150mm~Φ 300mm, and length is 350mm~750mm.
Compared with prior art, the invention has the following beneficial technical effects:
A kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot, by when anaerobic copper ingot is cast
The oxygen-free copper heelpiece for being inserted with Nb stick is put into crucible bottom, direct pouring obtains CuNb composite ingot, eliminates drilling, assembling, weldering
It series of processes, simple process, the high yield rate such as connects and Nb is greatly reduced3The manufacturing cost of Sn superconducting wire.
Detailed description of the invention
Fig. 1 is the schematic cross-section of CuNb composite ingot of the present invention,
Wherein 1 is oxygen-free copper, and 2 be Nb stick.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail.
A kind of embodiment 1: Nb of the present embodiment 13The preparation method of Sn superconducting wire multicore composite ingot, specifically include with
Lower step:
Step 1): taking with a thickness of 50mm, and diameter is the oxygen-free copper block of Φ 160mm as heelpiece, using ZK5150 vertical drilling
Bed is 20mm according to the arrangement working depth of Nb plug in multicore composite ingot on heelpiece with cotter mill cutter, and diameter is Φ 5mm's
Location hole 150；
Step 2): being Φ 5mm by diameter, and length is that 150 Nb sticks of 300mm are cleaned, and are inserted into the step after cleaning
In the location hole of the rapid oxygen-free copper heelpiece 1) obtained；
Step 3: the oxygen-free copper heelpiece for being inserted with Nb stick that step 2) is obtained is put into the water cooled copper mould bottom that diameter is Φ 160mm
The temperature of fusing is that 1100 DEG C of copper melt is cast to mould inside by portion, water pressure of cooling water 0.3MPa, casting time 2 minutes,
Until being higher than Nb stick 100mm and reserved feeding head height；
Step 4: after the ingot casting that step 3) obtains cools down completely, water cooled copper mould is hung out, ingot casting end riser is fallen in sawing,
It by ingot casting surface and end vehicle light is that the finished product CuNb that Φ 150mm length is 350mm is answered to get diameter with CW6163C type lathe
Close ingot.(
A kind of Nb of the invention3The preparation method of Sn superconducting wire multicore composite ingot directly obtains CuNb by casting
Nb is greatly reduced in composite ingot, simple process, high yield rate3The manufacturing cost of Sn superconducting wire.Inside the CuNb composite ingot of preparation
Through carrying out flaw detection without obvious stomata, after composite ingot squeezes core filaments deformation uniformity compared with boring method without significant difference, it is obtained
Nb3Sn superconducting wire performance indexes is good, meets the requirements.Embodiment 2
Step 1): taking with a thickness of 70mm, and diameter is the oxygen-free copper block of Φ 260mm as heelpiece, using ZK5150 vertical drilling
Bed is 30mm according to the arrangement working depth of Nb plug in multicore composite ingot on heelpiece with cotter mill cutter, and diameter is Φ 15mm's
Location hole 200；
Step 2): being Φ 15mm by diameter, and length is that the Nb stick of 500mm is cleaned, the step 1) after insertion cleaning
To oxygen-free copper heelpiece location hole in；
Step 3): the oxygen-free copper heelpiece for being inserted with Nb stick that step 2) is obtained is put into the water cooled copper mould that diameter is Φ 260mm
Bottom, water pressure of cooling water 0.2MPa cast the copper melt that the temperature of fusing is 1150 DEG C to mould inside, and casting time 3 divides
Clock, until being higher than Nb stick 150mm and reserved feeding head height；
Step 4): after the ingot casting that step 3) obtains cools down completely, water cooled copper mould is hung out, sawing is fallen ingot casting end and emitted
Mouthful, it by ingot casting surface and end vehicle light is Φ 250mm to get diameter with CW6163C type lathe, length is the finished product of 550mm
CuNb composite ingot.
Embodiment 3
Step 1): taking with a thickness of 100mm, and diameter is the oxygen-free copper block of Φ 310mm as heelpiece, using ZK5150 vertical drilling
Bed is 50mm according to the arrangement working depth of Nb plug in multicore composite ingot on heelpiece with cotter mill cutter, and diameter is Φ 3mm's
Location hole 800；
Step 2): being Φ 3mm by diameter, and length is that the Nb stick of 700mm is cleaned, and the step 1) after insertion cleaning obtains
Oxygen-free copper heelpiece location hole in；
Step 3): the oxygen-free copper heelpiece for being inserted with Nb stick that step 2) is obtained is put into the water cooled copper mould that diameter is Φ 310mm
Bottom, water pressure of cooling water 0.4MPa cast the copper melt that the temperature of fusing is 1200 DEG C to mould inside, and casting time 5 divides
Clock, until being higher than Nb stick 200mm and reserved feeding head height；
Step 4): after the ingot casting that step 3) obtains cools down completely, water cooled copper mould is hung out, sawing is fallen ingot casting end and emitted
Mouthful, it by ingot casting surface and end vehicle light is Φ 300mm to get diameter with CW6163C type lathe, length is the finished product of 750mm
CuNb composite ingot.
Claims (7)
1. a kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot, which comprises the steps of:
Step 1): according to the diameter of Nb plug, quantity, arrangement processing location hole in multicore composite ingot on oxygen-free copper heelpiece；
Step 2): in the location hole for the oxygen-free copper heelpiece that the step 1) after the Nb stick insertion cleaning after cleaning is obtained；
Step 3): the oxygen-free copper heelpiece for being inserted with Nb stick that step 2) is obtained is put into casting die bottom, by the copper melt of fusing
Casting is to mould inside, until being higher than Nb stick and there are until feeding head and cool down；
Step 4): the ingot casting that step 3) after cooling obtains is demoulded, and end riser is fallen in sawing, with lathe by ingot casting surface
Vehicle light is to get CuNb composite ingot.
2. Nb according to claim 13The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that the step
It is rapid 1) in oxygen-free copper heelpiece with a thickness of 50mm~100mm, diameter is Φ 160mm~Φ 310mm.
3. Nb according to claim 23The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that described
Depth of positioning hole is 20mm~50mm, and diameter is Φ 3mm~Φ 15mm, and quantity is 150~800.
4. Nb according to claim 13The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that the step
It is rapid 2) in Nb stick, diameter is corresponding with quantity with the diameter of quantity and location hole, and the length of the Nb stick is 300mm~700mm.
5. Nb according to claim 13The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that the step
It is rapid 3) in copper melt teeming height be higher than Nb stick 100~200mm of top.
6. Nb according to claim 13The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that the step
It is rapid 3) in copper solution cast temperature be 1100~1200 DEG C, casting time 2~5 minutes, mold was water cooled copper mould, cooling water water
Pressure is not less than 0.2MPa.
7. Nb according to claim 13The preparation method of Sn superconducting wire multicore composite ingot, which is characterized in that the step
It is rapid 4) in Che Guanghou finished product ingot diameters be Φ 150mm~Φ 300mm, length be 350mm~750mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811409963.1A CN110223803A (en) | 2018-11-24 | 2018-11-24 | A kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot |
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| CN201811409963.1A CN110223803A (en) | 2018-11-24 | 2018-11-24 | A kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot |
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| CN201811409963.1A Pending CN110223803A (en) | 2018-11-24 | 2018-11-24 | A kind of Nb3The preparation method of Sn superconducting wire multicore composite ingot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116895405A (en) * | 2023-09-11 | 2023-10-17 | 西安聚能超导线材科技有限公司 | Nb (Nb) alloy 3 Sectional heat treatment method for Sn superconducting wire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907550A (en) * | 1973-03-19 | 1975-09-23 | Airco Inc | Method of making same composite billets |
| US4532703A (en) * | 1979-10-17 | 1985-08-06 | The United States Of America As Represented By The United States Department Of Energy | Method of preparing composite superconducting wire |
| JPH0896633A (en) * | 1994-09-29 | 1996-04-12 | Furukawa Electric Co Ltd:The | Manufacture of nb3sn superconducting wire |
| CN104123998A (en) * | 2014-07-30 | 2014-10-29 | 西部超导材料科技股份有限公司 | Internal-tin process based composite multi-core CuNb bar preparation method for Nb3Sn |
-
2018
- 2018-11-24 CN CN201811409963.1A patent/CN110223803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907550A (en) * | 1973-03-19 | 1975-09-23 | Airco Inc | Method of making same composite billets |
| US4532703A (en) * | 1979-10-17 | 1985-08-06 | The United States Of America As Represented By The United States Department Of Energy | Method of preparing composite superconducting wire |
| JPH0896633A (en) * | 1994-09-29 | 1996-04-12 | Furukawa Electric Co Ltd:The | Manufacture of nb3sn superconducting wire |
| CN104123998A (en) * | 2014-07-30 | 2014-10-29 | 西部超导材料科技股份有限公司 | Internal-tin process based composite multi-core CuNb bar preparation method for Nb3Sn |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116895405A (en) * | 2023-09-11 | 2023-10-17 | 西安聚能超导线材科技有限公司 | Nb (Nb) alloy 3 Sectional heat treatment method for Sn superconducting wire |
| CN116895405B (en) * | 2023-09-11 | 2024-02-20 | 西安聚能超导线材科技有限公司 | Nb (Nb) alloy 3 Sectional heat treatment method for Sn superconducting wire |
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Application publication date: 20190910 |