CN1515377A - Welding method of Bi system high-temp. superconductive tape material - Google Patents
Welding method of Bi system high-temp. superconductive tape material Download PDFInfo
- Publication number
- CN1515377A CN1515377A CNA031016286A CN03101628A CN1515377A CN 1515377 A CN1515377 A CN 1515377A CN A031016286 A CNA031016286 A CN A031016286A CN 03101628 A CN03101628 A CN 03101628A CN 1515377 A CN1515377 A CN 1515377A
- Authority
- CN
- China
- Prior art keywords
- weldment
- welding
- welding method
- scolding tin
- based high
- 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
Abstract
The welding method for Bi system high-temp. superconducting band material includes the following steps: making soldering tin wire into soldering tin band whose thickness is 0.03-0.1 m, cutting it into the size according with welding area; uniformly applying soldering tin paste on the surface of weldment; using forming holder to fix the weldment and retaining a certain pressure; using heating equipment to once integrally heat the weldment to make the soldering tin band be completely molten; removing heating equipment to make the molten soldering tin be solidified so as to can obtain Bi system band material whose overlapped and welded tength is longer, and its welding efficiency is high.
Description
Technical field
The present invention relates to the welding method of Bi based high-temperature superconductive strip (hereinafter to be referred as Bi frenulum material), belong to the superconduction electrical technology field.
Background technology
Source " superconductor technology application ", ISBN 7-5616-3029-8/O213
The Bi based high-temperature superconductive strip has been realized industrialization, and obtains certain application in actual engineering.As everyone knows, conductive material needs to connect in actual applications, and ways of connecting has many kinds, for example welding, crimping etc.Connection resistance (or being called contact resistance) is generally all arranged in the junction.The Bi based high-temperature superconductive strip also needs to connect in the middle of practical application, and to connecting resistance certain requirement is arranged, and requires less than 10
-6Ω, even less than 10
-8Ω.Bi based high-temperature superconductive strip ways of connecting mainly contains two kinds: superconduction connection and solder.It is a kind of complicated technology that superconduction connects, and it can realize that connecting portion has superconductivity, but needs special equipment and professional skill, sees also immaturely technically, adopts seldom in practical engineering application.Soldering in the solder is a kind of solder technology of the Bi of being suitable for based high-temperature superconductive strip, connects though can not realize superconduction, widely adopts in practical engineering application.
Soldering is a method of utilizing tin-lead solder to weld, belongs to a kind of of solder.Material commonly used is scolder and solder flux (scaling powder), and instrument is an electric iron.Scolder is tin and plumbous alloy normally, because lead is harmful substance, and therefore also useful lead-free solder.In soldering, scolder is made into solder stick usually.Solder stick is to be made by tin lead or lead-free solder, and the solder stick that has is added with solder flux rosin or activator in silk.When using soldering, often adopt solder flux for improving welding quality.Electric iron provides the instrument of heat energy.
Its operation principle is to utilize heat energy that electric iron provides the solder side place of solder fusing at weldment, removes electric iron, can weld together weldment after scolder solidifies.
The general way of welding of Bi belt material of high temperature superconduct (wire rod):
(1) polishes off the oxide skin(coating) or the insulating barrier of Bi band weld, and, dry with alcohol or other anhydrous cleaning agent wiped clean;
(2) use electric iron that scolding tin (solder stick) is melted in burnishing part, make scolding tin formed the soldering-tin layer that one deck is even, thin and thick is appropriate by buffed surface;
(3) will need soldered Bi frenulum material to overlap, solder side overlaps, and uses the soldered place of electric iron heating Bi frenulum material, makes melts soldering tin, removes electric iron, and Bi frenulum material just has been welded together.
In order to reduce to weld resistance as far as possible, need the certain length of overlap joint in the time of the welding of Bi frenulum material usually, be generally 5～10cm, and the thickness of scolding tin should be under the prerequisite that guarantees weld strength and contact area Bao Yuehao more, and evenly; For guaranteeing certain weld strength, also need to overlap certain length in the time of the welding of Bi frenulum material.
But, (1) because the area of welding is big, the heat conduction of Bi frenulum material is fast, the contact of electric iron is difficult to provide at short notice a large amount of heat energy of fusing scolding tin because area is less, therefore in welding process, the local temperature height that Bi frenulum material contacts with electric iron, and local temperature far away slightly descends rapidly, and common electric iron is difficult to finish welding in this case, promptly enables to weld also to be difficult to guarantee the quality of welding.Be subjected to the restriction of the characteristic of Bi frenulum material itself, in welding process, should avoid Bi frenulum material to be subjected to the heating of excessive temperature for a long time.
When (2) Bi frenulum material uses, often need be bent to certain shape, in this case, it is unmanageable contacting pressure between electric iron and the Bi frenulum material, in case it is excessive then can not guarantee that curved shape meets the requirements to contact pressure.If it is too small to contact pressure between electric iron and the Bi frenulum material, then also be difficult to finish with common electric iron welding.
(3) for common method, at first need on Bi frenulum material, to be coated with last layer scolding tin with electric iron, and then Bi frenulum material overlap joint, welding.In this process, need band is carried out the processing of heating for 3 times, damage Bi frenulum material easily.
Summary of the invention
In order to solve the above-mentioned engineering difficult problem of welding Bi frenulum material, the invention provides a kind of new welding method, can be under the situation that guarantees little welding resistance high-quality finish the welding of Bi frenulum material.
Technical scheme of the present invention is: (1) is processed into the thick scolding tin band (paper tinsel) of 0.03～0.1mm to solder stick, and is cut into the size that conforms to bonding area; (2) evenly apply solder(ing) paste, thin and thick appropriateness on the surface of weldment; (3) use the anchor clamps of prior machine-shaping that weldment is fixed, and keep certain pressure; (4) use firing equipment that weldment is carried out the disposable integral heating, the scolding tin band is melted fully; (5) removing firing equipment solidifies the scolding tin of fusing; (6) prune overlap.
The invention has the beneficial effects as follows, can the very long Bi frenulum material of high efficiency welded lap length.During welding, weldment heats up rapidly, and the suffered easy control of temperature of Bi frenulum material, and the thickness of scolding tin and uniformity also can be guaranteed, and bonding area can reach more than 85%.
Description of drawings
Fig. 1 is the workflow diagram of superconducting wire welding method of the present invention.
The specific embodiment
Welding method to superconducting wire of the present invention is described in detail below in conjunction with specific embodiments, in a specific embodiment of the present invention, wherein comprises:
(1) typing anchor clamps keep the welding shape of Bi band, and keep constant clamping force in whole heating processes, and size is between 0.1MPa～10MPa;
(2) the scolding tin band of use 0.03～0.1mm.
(3) have two kinds of scolding tin prescriptions to use, a kind of main component is tin (Sn) and plumbous (Pb), and weight ratio is (39～61): (61～39), fusing point are 183 ℃～235 ℃; Another main component is tin (Sn) and silver (Ag), and weight ratio is (95～96.5): (5～3.5), fusing point are 220 ℃～245 ℃.
Scolding tin prescription one (tin, lead composition)
| The composition title | Tin (Sn) | Plumbous (Pb) |
| Weight ratio of constituents (%) | 39～61 | ?61～39 |
| Fusing point (℃) | 183～235 | |
Scolding tin prescription two (tin, silver-colored compositions)
| The composition title | Tin (Sn) | Ag(Pb) |
| Weight ratio of constituents (%) | 95～96.5 | 5～3.5 |
| Fusing point (℃) | 220～245 | |
(4) welding temperature should remain between 183 ℃～250 ℃.
Claims (5)
1, a kind of welding method of Bi based high-temperature superconductive strip is characterized in that this method comprises following step:
Solder stick is processed into the thick scolding tin band of 0.03～0.1mm, and is cut into the size that conforms to bonding area;
Surface at weldment evenly applies solder(ing) paste;
Use the typing anchor clamps that weldment is fixed, and keep certain pressure;
Use firing equipment that weldment is carried out the disposable integral heating, the scolding tin band is melted fully;
Removing firing equipment solidifies the scolding tin of fusing;
2, according to the welding method of the described Bi based high-temperature superconductive strip of claim 1, when it is characterized in that described typing anchor clamps provide certain thrust also as weldment welding position forming mould, anchor clamps step up the power size between 0.1MPa～10MPa.
3, according to the welding method of the described Bi based high-temperature superconductive strip of claim 1, it is characterized in that described scolding tin main component is tin and lead, weight ratio is (39～61): (39～61), fusing point are 183 ℃～235 ℃.
4, according to the welding method of the described Bi based high-temperature superconductive strip of claim 1, it is characterized in that described scolding tin main component is tin (Sn) and silver (Ag), weight ratio is (95～96.5): (5～3.5), fusing point are 220 ℃～245 ℃.
5,, it is characterized in that described welding temperature should remain between 183 ℃～250 ℃ according to the welding method of the described Bi based high-temperature superconductive strip of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031016286A CN1515377A (en) | 2003-01-10 | 2003-01-10 | Welding method of Bi system high-temp. superconductive tape material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031016286A CN1515377A (en) | 2003-01-10 | 2003-01-10 | Welding method of Bi system high-temp. superconductive tape material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1515377A true CN1515377A (en) | 2004-07-28 |
Family
ID=34239134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031016286A Pending CN1515377A (en) | 2003-01-10 | 2003-01-10 | Welding method of Bi system high-temp. superconductive tape material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1515377A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837093A (en) * | 2012-09-29 | 2012-12-26 | 中国东方电气集团有限公司 | Welding method for yttrium series high-temperature superconducting tape |
| 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 |
| CN103862122A (en) * | 2014-04-03 | 2014-06-18 | 上海三原电缆附件有限公司 | Method and product for welding superconduction belts to circular copper conductor |
| CN105633759A (en) * | 2016-03-01 | 2016-06-01 | 西南交通大学 | Low-resistance welding apparatus for thin-strip conductor |
| CN109079270A (en) * | 2018-10-26 | 2018-12-25 | 南通舟舰钣金有限公司 | A kind of soldering method |
| CN110875106A (en) * | 2019-11-15 | 2020-03-10 | 西部超导材料科技股份有限公司 | High-strength Bi-2223 superconducting strip and preparation method thereof |
-
2003
- 2003-01-10 CN CNA031016286A patent/CN1515377A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837093A (en) * | 2012-09-29 | 2012-12-26 | 中国东方电气集团有限公司 | Welding method for yttrium series high-temperature superconducting tape |
| CN102837093B (en) * | 2012-09-29 | 2014-11-05 | 中国东方电气集团有限公司 | Welding method for yttrium series high-temperature superconducting tape |
| 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 |
| CN103862122A (en) * | 2014-04-03 | 2014-06-18 | 上海三原电缆附件有限公司 | Method and product for welding superconduction belts to circular copper conductor |
| CN105633759A (en) * | 2016-03-01 | 2016-06-01 | 西南交通大学 | Low-resistance welding apparatus for thin-strip conductor |
| CN109079270A (en) * | 2018-10-26 | 2018-12-25 | 南通舟舰钣金有限公司 | A kind of soldering method |
| CN110875106A (en) * | 2019-11-15 | 2020-03-10 | 西部超导材料科技股份有限公司 | High-strength Bi-2223 superconducting strip and preparation method thereof |
| CN110875106B (en) * | 2019-11-15 | 2021-07-06 | 西部超导材料科技股份有限公司 | High-strength Bi-2223 superconducting strip and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107799917B (en) | A kind of the low resistance connection device and its manufacturing method of REBCO high-temperature superconductor band | |
| CN109048019B (en) | Welding process for copper-aluminum composite bar | |
| CN104103335A (en) | Metal wire for solar energy battery back electrode and preparation method thereof, solar energy battery sheet and preparation thereof, and solar energy battery assembly | |
| US20070051774A1 (en) | Method of controlling solder deposition on heat spreader used for semiconductor package | |
| CN1515377A (en) | Welding method of Bi system high-temp. superconductive tape material | |
| US7355142B2 (en) | Resistance welding electrode, welded copper flex lead, and method for making same | |
| CN107127468B (en) | Preparation method of high-temperature interconnection welding spot based on foam copper | |
| CN104167487A (en) | Yttrium system superconducting strip with contact resistance evenly distributed and method and device for manufacturing yttrium system superconducting strip | |
| CN108406169B (en) | Welding joint and welding method of low-resistance yttrium high-temperature superconductor based on nano silver solder | |
| CN112217079B (en) | Low-resistance connection method for rare earth barium copper oxide superconducting tape | |
| EP0606426A1 (en) | Method for making an electrically conductive contact useful for joining high transition temperature superconductors | |
| CN106356424A (en) | Environment-friendly brazing method for Al back electrode and Cu electrode leads of Si wafer of solar cell | |
| CN101047296A (en) | Copper aluminium welding technology | |
| CN109396623A (en) | A kind of resistance welding method being connect with ultra-thin layers of copper with conducting wire suitable for space | |
| CN109509571A (en) | A kind of kamash alloy and copper strips composite material and preparation method | |
| CN107552912A (en) | High-temperature superconductor band compresses soldering apparatus and welding method certainly with copper tip counterweight | |
| DE19803687C1 (en) | Soldering high-temperature superconductors of a cable to a connector piece | |
| KR101337432B1 (en) | Joining methods of rebco coated conductor tapes with silver protecting layers by diffusion junction process | |
| RU2702616C1 (en) | Method of making electrical contact connection | |
| CN106735672A (en) | The room temperature supersonically preparation method of intermetallic compound joint | |
| CN110064807B (en) | Welding method for reducing voltage drop of electrolytic cell | |
| CN114619131B (en) | Solderless welding joint and welding manufacturing method thereof | |
| CN113798787B (en) | Preparation method of all-intermetallic compound joint | |
| JPH05279140A (en) | Method for joining oxide superconductor | |
| US5592732A (en) | Method of making super conducting bonds for thin film devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |