CN102837093A - Welding method for yttrium series high-temperature superconducting tape - Google Patents
Welding method for yttrium series high-temperature superconducting tape Download PDFInfo
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- CN102837093A CN102837093A CN201210372964XA CN201210372964A CN102837093A CN 102837093 A CN102837093 A CN 102837093A CN 201210372964X A CN201210372964X A CN 201210372964XA CN 201210372964 A CN201210372964 A CN 201210372964A CN 102837093 A CN102837093 A CN 102837093A
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- temperature
- system high
- superconducting
- yttrium
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- 238000003466 welding Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 26
- 150000003746 yttrium Chemical class 0.000 title abstract 5
- 229910000679 solder Inorganic materials 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000003892 spreading Methods 0.000 claims abstract description 7
- 230000007480 spreading Effects 0.000 claims abstract description 7
- 238000009736 wetting Methods 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 69
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 69
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims 1
- 238000005476 soldering Methods 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
Abstract
The invention relates to a welding method for an yttrium series high-temperature superconducting tape. The welding method comprises the following steps of: fixing two sections of yttrium series high-temperature superconducting short tapes on two sides of one section of yttrium series high-temperature superconducting long tape to be welded to form a spreading plane area; flatly paving solder in the spreading plane area by adopting a solder heating mode to form a lapping area; lapping another section of yttrium series high-temperature superconducting long tape to the lapping area of the superconducting long tape to enable two sections of superconducting long tapes to have overlapped parts; respectively heating solder in the lapping areas of two sections of superconducting short tapes; melting the solder between the overlapped parts of two sections of superconducting long tapes by self heat transfer of the solder; after melting, wetting and spreading to enable the two sections of superconducting long tapes to be welded together through the solder between the overlapped parts; and finally, stripping two sections of superconducting short tapes by heating and finishing the welding. According to the welding method, the mode of directly heating the high-temperature superconducting tapes to be welded can be avoided, and thus the heating time is short, the superconducting performance of the high-temperature superconducting tapes are prevented from being influenced by high temperature during soldering; and the welding method has the advantages of strong operability, low possibility of generating pseudo soldering and high rate of finished products.
Description
Technical field
The invention belongs to the superconduction electrical technology field, particularly a kind of welding method of yttrium based high-temperature superconductive strip.
Background technology
Superconducting tape have current capacity superpower, do not have plurality of advantages such as thermal losses, can be widely used in electric power unemployed in to improve equipment performance.Different based on material and processing technology, mainly to be divided into yttrium be that superconducting tape and bismuth are two kinds of superconducting tapes to belt material of high temperature superconduct at present.Yttrium is a superconducting tape as the belt material of high temperature superconduct of a new generation (promptly two generation superconducting tape), than generation Bi-based high-temperature superconductive strip better electrical property and mechanical performance is arranged.The production of band has at present realized industrialization, and in a lot of practical engineering project, obtains certain application.
Yttrium is that the superconducting tape product generally is the unit length of 100 m or 200 m, in practical application, need connect.For the connection of yttrium based high-temperature superconductive strip, mainly be the mode that adopts solder, existing welding method is main with the method for SuperPower company, its operation principle is following:
1. the surperficial wiped clean of two generation belt material of high temperature superconduct that will weld;
2. general commercial scolder (like 40Pb-60Sn) and indium all may be utilized;
Two generation superconducting tape superconduction face coat scolder;
With one section two generation superconducting tape superconduction face gently be pressed on the superconduction face of another section two generations superconducting tape, appropriate heating then makes the solder fusing;
5. welding temperature can not be higher than 250
oUnder the situation of C, particularly long time treatment (several hrs), superconductivity is degenerated preventing.
The problem that this welding method exists is: for the yttrium based high-temperature superconductive strip, one side is a superconduction face, and another side is the base band face.When adopting the conventional softer method for welding to weld, realization be superconduction face and the welding of superconduction face, its welding heat is to conduct to superconduction face through the base band face, and then on the solder in the superconduction face of the conducting to interlayer, realizes the fusing and the wetting and spreading of solder.And yttrium is the base band of superconducting tape is stainless steel material, poor thermal conductivity.The traditional hot conduction needs long-time heating just can make enough heats conduct to solder to make its fusing.And the superconducting layer in the yttrium based high-temperature superconductive strip is a kind of lattice structure of Cu oxide, and its chemical formula is YBa
2Cu
3O
{ 7-x}Its superconducting property and x value (oxygen content) have much relations, have only the material that satisfies 0≤x≤0.5 that superconductivity is just arranged under critical-temperature.If heat is too high in welding process, perhaps heat time heating time long, can cause the oxygen atom metering in the YBCO lattice structure to reduce, thereby have a strong impact on its superconductivity.Therefore, at present when welding yttrium based high-temperature superconductive strip, need strict its heating-up temperature of control (<250
oC), and because of the stainless steel material poor thermal conductivity keep away unavoidable long-time heating (several hrs).So on the one hand, low excessively temperature possibly cause solder not melt fully, produces rosin joint etc., influences property of welded joint; On the other hand the superconducting tape long-time heating is influenced probably the superconductivity of band.
Summary of the invention
In order to solve the above-mentioned engineering difficult problem of welding yttrium based high-temperature superconductive strip; The invention provides a kind of soft soldering method of indirect; Realize the welding of short time heating (a few minutes) completion yttrium based high-temperature superconductive strip, guarantee that the band superconductivity is unaffected, property of welded joint is good simultaneously; Welding resistance is low, and yield rate is high.
Technical scheme of the present invention is:
A kind of welding method of yttrium based high-temperature superconductive strip is characterized in that step is following:
Step 1 is fixed in one section dual-side that needs the long band of yttrium system high-temperature superconducting of welding with the short band of two sections yttrium system high-temperature superconductings, two sections short bands of yttrium system high-temperature superconducting with the yttrium system high-temperature superconducting long band formation sprawl plane domain;
Step 2 spreads into said sprawl on the plane domain and forms the overlap joint zone solder is smooth with the scolding tin mode of heating;
Step 3 needs the long band of yttrium system high-temperature superconducting of welding to be overlapped on the overlap joint zone of the long band of said yttrium system high-temperature superconducting another section, makes the long band of said two sections yttrium system high-temperature superconductings have lap;
Step 4; Respectively to the heating of the solder on the overlap joint zone of the short band of two sections yttrium system high-temperature superconductings; Make the solders fusing between the long band of the two sections yttrium system high-temperature superconductings lap through solder self heat transfer; Two sections long solder fusing back wetting and spreadings of being with between the lap of yttrium system high-temperature superconducting make the long band of two sections yttrium system high-temperature superconductings weld together through the solder between the lap;
Step 5 heats the solder between the short band of two sections yttrium system high-temperature superconductings and the long band of two sections yttrium system high-temperature superconductings, the short band of two sections yttrium system high-temperature superconductings is dialled left, and the solders between the long band of two sections yttrium system high-temperature superconductings are solidified, and accomplishes superconducting tape and welds.
The long connection resistance of being with of two sections yttrium system high-temperature superconductings through obtaining after this welding method welding is lower than 2 * 10
-7Ω.
In step 3, adopt the typing anchor clamps fixing, and keep certain pressure the long band of two sections yttrium system high-temperature superconductings; Here also can adopt other pressuring methods to fix pressurization, not adopt the typing anchor clamps to fix pressurization.
The size of the pressure of the long band of two sections yttrium system high-temperature superconductings of said typing clamps is between 1 MPa-20 MPa.
In said step 4 and the step 5, use electric soldering iron to heat, perhaps other mode of heatings (for example hair dryer).
Beneficial effect of the present invention is following:
1. this method is through the mode of indirect, and electric soldering iron does not directly contact the superconducting tape that needs welding, and heat time heating time is short, can not influence the band superconductivity;
2. property of welded joint is good, no rosin joint, and band welding point resistance is low;
3. adopt the indirect mode, welding temperature is not had special demands, guarantee that simultaneously weld heating do not have influence to the band superconductivity;
4. scolder there are not special demands;
5. play styling through typing anchor clamps or other pressuring methods, prevent that effectively the superconducting tape weldment is subjected to displacement when solder melts.
The specific embodiment
A kind of welding method of yttrium based high-temperature superconductive strip, its step is following:
Step 1 is fixed in one section dual-side that needs the long band of yttrium system high-temperature superconducting of welding with short band of two sections yttrium system high-temperature superconductings or the suitable material of welding performance, two sections short bands of yttrium system high-temperature superconducting with the yttrium system high-temperature superconducting long band formation sprawl plane domain;
Step 2 spreads into said sprawling and forms the overlap joint zone on the plane domain solder is smooth with the mode (the perhaps mode of other Fast Heating) of scolding tin heating;
Step 3; Need the long band of yttrium system high-temperature superconducting of welding to be overlapped on the overlap joint zone of the long band of said yttrium system high-temperature superconducting another section; Make the long band of said two sections yttrium system high-temperature superconductings have lap, and use the typing anchor clamps fixing, and keep certain pressure the long band of two sections yttrium system high-temperature superconductings; The size of the pressure of the long band of two sections yttrium system high-temperature superconductings of said typing clamps is between 1 MPa-20 MPa; Here also can adopt other pressuring methods to fix pressurization, not adopt the typing anchor clamps to fix pressurization.
Step 4; Respectively the solder on the overlap joint zone of the short band of two sections yttrium system high-temperature superconductings is heated with electric soldering iron; Make the solders fusing between the long band of the two sections yttrium system high-temperature superconductings lap through solder self heat transfer; Two sections long solder fusing back wetting and spreadings of being with between the lap of yttrium system high-temperature superconducting make the long band of two sections yttrium system high-temperature superconductings weld together through the solder between the lap;
Step 5 with the solder between the short band of two sections yttrium system high-temperature superconductings of electric soldering iron heating and the long band of two sections yttrium system high-temperature superconductings, is dialled the short band of two sections yttrium system high-temperature superconductings and is left, and the solders between the long band of two sections yttrium system high-temperature superconductings are solidified, and accomplishes superconducting tape and welds.
The long connection resistance of being with of two sections yttrium system high-temperature superconductings through obtaining after this welding method welding is lower than 2 * 10
-7Ω.
Claims (4)
1. the welding method of a yttrium based high-temperature superconductive strip is characterized in that step is following:
Step 1 is fixed in one section dual-side that needs the long band of yttrium system high-temperature superconducting of welding with the short band of two sections yttrium system high-temperature superconductings, two sections short bands of yttrium system high-temperature superconducting with the yttrium system high-temperature superconducting long band formation sprawl plane domain;
Step 2 spreads into said sprawl on the plane domain and forms the overlap joint zone solder is smooth with the scolding tin mode of heating;
Step 3 needs the long band of yttrium system high-temperature superconducting of welding to be overlapped on the overlap joint zone of the long band of said yttrium system high-temperature superconducting another section, makes the long band of said two sections yttrium system high-temperature superconductings have lap;
Step 4; Respectively to the heating of the solder on the overlap joint zone of the short band of two sections yttrium system high-temperature superconductings; Make the solders fusing between the long band of the two sections yttrium system high-temperature superconductings lap through solder self heat transfer; Two sections long solder fusing back wetting and spreadings of being with between the lap of yttrium system high-temperature superconducting make the long band of two sections yttrium system high-temperature superconductings weld together through the solder between the lap;
Step 5 heats the solder between the short band of two sections yttrium system high-temperature superconductings and the long band of two sections yttrium system high-temperature superconductings, the short band of two sections yttrium system high-temperature superconductings is dialled left, and the solders between the long band of two sections yttrium system high-temperature superconductings are solidified, and accomplishes superconducting tape and welds.
2. welding method according to claim 1 is characterized in that: the long connection resistance of being with of two sections yttrium system high-temperature superconductings through obtaining after this welding method welding is lower than 2 * 10
-7Ω.
3. based on the described welding method of claim 1, it is characterized in that: in step 3, fixedly pressing mode is fixing the long band of two sections yttrium system high-temperature superconductings to adopt typing anchor clamps or other, and keeps certain pressure.
4. welding method according to claim 3 is characterized in that: the size of the pressure of the long band of two sections yttrium system high-temperature superconductings of said typing clamps is between 1 MPa-20 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372964.XA CN102837093B (en) | 2012-09-29 | 2012-09-29 | Welding method for yttrium series high-temperature superconducting tape |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372964.XA CN102837093B (en) | 2012-09-29 | 2012-09-29 | Welding method for yttrium series high-temperature superconducting tape |
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| Publication Number | Publication Date |
|---|---|
| CN102837093A true CN102837093A (en) | 2012-12-26 |
| CN102837093B CN102837093B (en) | 2014-11-05 |
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|---|---|---|---|
| CN201210372964.XA Active CN102837093B (en) | 2012-09-29 | 2012-09-29 | Welding method for yttrium series high-temperature superconducting tape |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170699A (en) * | 2013-03-07 | 2013-06-26 | 中国科学院等离子体物理研究所 | Welding device and welding method for high temperature superconducting strip |
| CN106451029A (en) * | 2016-09-22 | 2017-02-22 | 合肥聚能电物理高技术开发有限公司 | Indium wire overlapping device and overlapping process of superconduction connector |
| CN108555428A (en) * | 2018-05-29 | 2018-09-21 | 北京交通大学 | A kind of preparation method and application of metal-based nano composite solder |
| CN108796477A (en) * | 2018-05-29 | 2018-11-13 | 北京交通大学 | A kind of preparation method of the yttrium based high-temperature superconductive strip of surface porosity |
| CN109352110A (en) * | 2018-09-29 | 2019-02-19 | 北京交通大学 | Superconducting tape interband weld device |
| CN112331403A (en) * | 2020-10-13 | 2021-02-05 | 深圳供电局有限公司 | Method for manufacturing high-temperature superconducting cable electrified conductor |
| CN112331402A (en) * | 2020-10-13 | 2021-02-05 | 深圳供电局有限公司 | High-temperature superconducting cable electrifying conductor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170699A (en) * | 2013-03-07 | 2013-06-26 | 中国科学院等离子体物理研究所 | Welding device and welding method for high temperature superconducting strip |
| CN106451029A (en) * | 2016-09-22 | 2017-02-22 | 合肥聚能电物理高技术开发有限公司 | Indium wire overlapping device and overlapping process of superconduction connector |
| CN106451029B (en) * | 2016-09-22 | 2018-07-13 | 合肥聚能电物理高技术开发有限公司 | Superconducting joint indium silk lap device and its lap joint process |
| CN108555428A (en) * | 2018-05-29 | 2018-09-21 | 北京交通大学 | A kind of preparation method and application of metal-based nano composite solder |
| CN108796477A (en) * | 2018-05-29 | 2018-11-13 | 北京交通大学 | A kind of preparation method of the yttrium based high-temperature superconductive strip of surface porosity |
| CN108555428B (en) * | 2018-05-29 | 2019-12-31 | 北京交通大学 | Preparation method and application of metal-based nano composite solder |
| CN109352110A (en) * | 2018-09-29 | 2019-02-19 | 北京交通大学 | Superconducting tape interband weld device |
| CN112331403A (en) * | 2020-10-13 | 2021-02-05 | 深圳供电局有限公司 | Method for manufacturing high-temperature superconducting cable electrified conductor |
| CN112331402A (en) * | 2020-10-13 | 2021-02-05 | 深圳供电局有限公司 | High-temperature superconducting cable electrifying conductor |
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