CN106099601B - A kind of copper-aluminium transition wire clip soldering process - Google Patents
A kind of copper-aluminium transition wire clip soldering process Download PDFInfo
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- CN106099601B CN106099601B CN201610394668.8A CN201610394668A CN106099601B CN 106099601 B CN106099601 B CN 106099601B CN 201610394668 A CN201610394668 A CN 201610394668A CN 106099601 B CN106099601 B CN 106099601B
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- copper pipe
- tin
- aluminium sheet
- half round
- round copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
- H01R4/625—Soldered or welded connections
Abstract
The invention discloses a kind of copper-aluminium transition wire clip soldering process, it comprises the following steps：S1, from aluminium sheet, the milling R grooves on the top surface of aluminium sheet；S2, half round copper pipe；S3, aluminium sheet cleaning；S4, half round copper pipe cleaning；S5, it is placed on electric furnace and is heated to 400 ~ 450 DEG C, it is stand-by；S6, solution of tin and zinc solution preparation；S7, copper pipe maceration extract preparation；S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, take out aluminium sheet simultaneously be positioned on workbench；S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, make the arc of R grooves half of aluminium sheet on the half arc alignment workbench of half round copper pipe again, then pressurize half 5 ~ 10s of round copper pipe with briquetting to discharge the air of contact portion.The beneficial effects of the invention are as follows：Technique is simple, production cost is low, avoids having copper pipe obscission at 170 DEG C, can ensure that copper pipe and aluminium sheet rate of engagement are up to 95%.
Description
Technical field
The present invention relates to the technical field to copper-aluminium transition wire clip in power transmission and transformation line, particularly a kind of copper-aluminium transition wire clip
Soldering process.
Background technology
There is the situation that many copper are connected with aluminium in electric energy conversion system, this will use copper-aluminium transition wire clip.Such line
Folder is the widely used typical copper aluminium interface unit in power industry.Copper-aluminium transition wire clip is used for bus downlead and electricity
The outlet terminal connection of gas equipment, such as transformer, breaker, transformer, disconnecting switch, wall bushing.Use copper-aluminium transition
Wire clamp, the problems such as many conductivity problems and electrochemical corrosion can be avoided, it is to realize with aluminium for copper, save copper material, so as to reduce
The effective means of power transmission and transforming equipment cost.Copper-aluminium transition wire clip can be divided into two kinds of forms：Dock and bridging type.Wherein dock
Wire clamp is because its intrinsic properity defect is being eliminated rapidly, and bridging type wire clamp turns into main application form.Overlap joint
Formula wire clamp is to weld deposited sheet copper in aluminium material surface using soldering tech to be fabricated.Compared with dock wire clamp, bridging type wire clamp
Middle copper coin and aluminium sheet are integrated, and can not only meet the requirement of electric property, and high mechanical strength well, it is not easy to disconnected
Split failure.
At present even there are many deficiencies in the soldering processes of copper-aluminium transition wire clip, so as to easily cause the quality of Transition wire clip
It is unstable.Burn into fracture and resistivity anomaly rise can occur when wire clamp quality defect, when it is on active service in power transmission and transformation line
Phenomena such as, easily cause the damage of the equipment such as transformer station and be likely to cause the accidents such as power failure.Sent out really in power transmission and transformation industry
Raw more cause wire clamp fracture failures and the accident such as the large-area power-cuts occurred and device damage.Therefore, copper-aluminium transition wire clip is improved
Welding quality have great importance.From the point of view of the fracture accident to occurring under the actual service condition of wire clamp, copper aluminium is caused
The reason for Transition wire clip fails mainly includes less than two aspects of decay resistance and intensity.And intensity, the corrosion resistance of wire clamp
Brazing quality can be depended mainly on.
Conventional brazing technique can only ensure copper pipe and aluminium sheet rate of engagement 80%, and percent defective is high, and conventional brazing technique is at 170 C °
When have copper pipe obscission.And when using blast weldering sample, complex process, production cost height.
The content of the invention
The shortcomings that it is an object of the invention to overcome prior art, there is provided a kind of technique is simple, production cost is low, avoids
Have copper pipe obscission at 170 DEG C, copper pipe can be ensured and aluminium sheet rate of engagement be up to 95% copper-aluminium transition wire clip soldering process.
The purpose of the present invention is achieved through the following technical solutions：A kind of copper-aluminium transition wire clip soldering process, it include with
Lower step：
S1, from length be respectively 16mm, 80mm, 70mm aluminium sheet, the milling R grooves on the top surface of aluminium sheet, R grooves
Radius be 9.5mm；
S2, from length, thickness, radius be respectively 80mm, 3mm, 9.5mm half round copper pipe；
S3, aluminium sheet cleaning, aluminium sheet is put into 10% sodium hydroxide solution, and aluminium sheet is removed by sodium hydroxide solution
Oil stain and debris on surface, taken out after impregnating 6 ~ 10min, the sodium hydroxide solution in surface of aluminum plate is cleaned using clear water, it is real
The cleaning of aluminium sheet is showed；
S4, half round copper pipe cleaning, half round copper pipe is put into dust technology, removed by dust technology in semicircle copper pipe surface
Spot and cupric oxide, taken out after impregnating 6 ~ 10min, the dust technology in semicircle copper pipe surface cleaned using clear water, realize half
The cleaning of round copper pipe；
S5, will clean after aluminium sheet and half round copper pipe, be placed on electric furnace and be heated to 400 ~ 450 DEG C, it is stand-by；
S6, solution of tin and zinc solution preparation, first 75% tin material and 25% zinc material are added in tin pot, then tin pot is added
Heat melts tin material and zinc material to 400 ~ 450 DEG C, then concentrated nitric acid is poured into tin pot and stirred, through after a while
After chemical reaction, you can solution of tin is made：The ratio of zinc solution is 3:1 mixed liquor；
S7, copper pipe maceration extract preparation, into container, additional proportion is respectively water, butter of tin, sal-ammoniac, water：Tetrachloro
Change tin：The ratio of sal-ammoniac is 10 ~ 20：1~6：0.5 ~ 2, it is agitated uniformly after, you can copper pipe maceration extract is made；
S8, by step S5 heat after half round copper pipe immerse copper pipe maceration extract in, after 2 ~ 3min, take out semicircle copper
Manage and be placed on electric furnace and dry, immersed again in copper pipe maceration extract after drying, take out half round copper pipe after 6 ~ 8s；
S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, through 6
Aluminium sheet is taken out after ~ 8s, then brushes R grooves repeatedly with steel brush, solution of tin and zinc solution in groove is well mixed, is again dipped into mixed liquor
In, after 1 ~ 2s, take out aluminium sheet and be positioned on workbench；
S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, then
Make the arc of R grooves half of aluminium sheet on the half arc alignment workbench of half round copper pipe, then connect with half 5 ~ 10s of round copper pipe of briquetting pressurization with discharging
The air of contact portion point, after composition surface substantially uniformity be bonded, remove remained on surface tin, zinc liquation, completely it is cold it is true after, that is, realize
The preparation of copper-aluminium transition wire clip；
S11, subsequent mechanical processing is carried out to copper-aluminium transition wire clip.
The present invention has advantages below：Present invention process is simple, production cost is low, avoids having copper pipe to come off at 170 DEG C
Phenomenon, it can ensure that copper pipe and aluminium sheet rate of engagement are up to 95%.
Embodiment
The present invention will be further described below, and protection scope of the present invention is not limited to as described below：
Embodiment one：A kind of copper-aluminium transition wire clip soldering process, it comprises the following steps：
S1, from length be respectively 16mm, 80mm, 70mm aluminium sheet, the milling R grooves on the top surface of aluminium sheet, R grooves
Radius be 9.5mm；
S2, from length, thickness, radius be respectively 80mm, 3mm, 9.5mm half round copper pipe；
S3, aluminium sheet cleaning, aluminium sheet is put into 10% sodium hydroxide solution, and aluminium sheet is removed by sodium hydroxide solution
Oil stain and debris on surface, taken out after impregnating 6min, the sodium hydroxide solution in surface of aluminum plate is cleaned using clear water, is realized
The cleaning of aluminium sheet；
S4, half round copper pipe cleaning, half round copper pipe is put into dust technology, removed by dust technology in semicircle copper pipe surface
Spot and cupric oxide, impregnate 6min after take out, clean the dust technology in semicircle copper pipe surface using clear water, realize semicircle copper
The cleaning of pipe；
S5, will clean after aluminium sheet and half round copper pipe, be placed on electric furnace and be heated to 400 DEG C, it is stand-by；
S6, solution of tin and zinc solution preparation, first 75% tin material and 25% zinc material are added in tin pot, then tin pot is added
Hot to 400 DEG C melt tin material and zinc material, and then concentrated nitric acid is poured into tin pot and stirred, through chemistry after a while
After reaction, you can solution of tin is made：The ratio of zinc solution is 3:1 mixed liquor；
S7, copper pipe maceration extract preparation, into container, additional proportion is respectively water, butter of tin, sal-ammoniac, water：Tetrachloro
Change tin：The ratio of sal-ammoniac is 10：3：1, it is agitated uniformly after, you can copper pipe maceration extract is made；
S8, by step S5 heat after half round copper pipe immerse copper pipe maceration extract in, after 2min, take out half round copper pipe
And be placed on electric furnace and dry, immerse in copper pipe maceration extract after drying, take out half round copper pipe again after 6s；
S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, warp
Aluminium sheet is taken out after 6s, then brushes R grooves repeatedly with steel brush, solution of tin and zinc solution in groove is well mixed, is again dipped into mixed liquor
In, after 1s, take out aluminium sheet and be positioned on workbench；
S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, then
Make the arc of R grooves half of aluminium sheet on the half arc alignment workbench of half round copper pipe, then pressurize half round copper pipe 5s with briquetting to discharge contact
Partial air, after composition surface substantially uniformity is bonded, remove remained on surface tin, zinc liquation, completely it is cold really after, that is, realize copper
The preparation of aluminium Transition wire clip.The technique can ensure that the rate of engagement of half round copper pipe and aluminium sheet is up to 95%, and conventional brazing technique is only
Copper pipe and aluminium sheet rate of engagement 80% are can guarantee that, therefore is substantially better than conventional brazing technique, the processing step is simple in addition, prepares copper
Aluminium Transition wire clip cost is low.
S11, subsequent mechanical processing is carried out to copper-aluminium transition wire clip.
Embodiment two：A kind of copper-aluminium transition wire clip soldering process, it comprises the following steps：
S1, from length be respectively 16mm, 80mm, 70mm aluminium sheet, the milling R grooves on the top surface of aluminium sheet, R grooves
Radius be 9.5mm；
S2, from length, thickness, radius be respectively 80mm, 3mm, 9.5mm half round copper pipe；
S3, aluminium sheet cleaning, aluminium sheet is put into 10% sodium hydroxide solution, and aluminium sheet is removed by sodium hydroxide solution
Oil stain and debris on surface, taken out after impregnating 8min, the sodium hydroxide solution in surface of aluminum plate is cleaned using clear water, is realized
The cleaning of aluminium sheet；
S4, half round copper pipe cleaning, half round copper pipe is put into dust technology, removed by dust technology in semicircle copper pipe surface
Spot and cupric oxide, impregnate 8min after take out, clean the dust technology in semicircle copper pipe surface using clear water, realize semicircle copper
The cleaning of pipe；
S5, will clean after aluminium sheet and half round copper pipe, be placed on electric furnace and be heated to 430 DEG C, it is stand-by；
S6, solution of tin and zinc solution preparation, first 75% tin material and 25% zinc material are added in tin pot, then tin pot is added
Hot to 430 DEG C melt tin material and zinc material, and then concentrated nitric acid is poured into tin pot and stirred, through chemistry after a while
After reaction, you can solution of tin is made：The ratio of zinc solution is 3:1 mixed liquor；
S7, copper pipe maceration extract preparation, into container, additional proportion is respectively water, butter of tin, sal-ammoniac, water：Tetrachloro
Change tin：The ratio of sal-ammoniac is 15：1：0.5, it is agitated uniformly after, you can copper pipe maceration extract is made；
S8, by step S5 heat after half round copper pipe immerse copper pipe maceration extract in, after 2.5min, take out semicircle copper
Manage and be placed on electric furnace and dry, immersed again in copper pipe maceration extract after drying, take out half round copper pipe after 7s；
S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, warp
Aluminium sheet is taken out after 7s, then brushes R grooves repeatedly with steel brush, solution of tin and zinc solution in groove is well mixed, is again dipped into mixed liquor
In, after 1.5s, take out aluminium sheet and be positioned on workbench；
S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, then
Make the arc of R grooves half of aluminium sheet on the half arc alignment workbench of half round copper pipe, then pressurize half round copper pipe 8s with briquetting to discharge contact
Partial air, after composition surface substantially uniformity is bonded, remove remained on surface tin, zinc liquation, completely it is cold really after, that is, realize copper
The preparation of aluminium Transition wire clip,
S11, subsequent mechanical processing is carried out to copper-aluminium transition wire clip.
Embodiment three：
A kind of copper-aluminium transition wire clip soldering process, it comprises the following steps：
S1, from length be respectively 16mm, 80mm, 70mm aluminium sheet, the milling R grooves on the top surface of aluminium sheet, R grooves
Radius be 9.5mm；
S2, from length, thickness, radius be respectively 80mm, 3mm, 9.5mm half round copper pipe；
S3, aluminium sheet cleaning, aluminium sheet is put into 10% sodium hydroxide solution, and aluminium sheet is removed by sodium hydroxide solution
Oil stain and debris on surface, taken out after impregnating 10min, the sodium hydroxide solution in surface of aluminum plate is cleaned using clear water, realized
The cleaning of aluminium sheet；
S4, half round copper pipe cleaning, half round copper pipe is put into dust technology, removed by dust technology in semicircle copper pipe surface
Spot and cupric oxide, impregnate 10min after take out, clean the dust technology in semicircle copper pipe surface using clear water, realize semicircle
The cleaning of copper pipe；
S5, will clean after aluminium sheet and half round copper pipe, be placed on electric furnace and be heated to 450 DEG C, it is stand-by；
S6, solution of tin and zinc solution preparation, first 75% tin material and 25% zinc material are added in tin pot, then tin pot is added
Hot to 450 DEG C melt tin material and zinc material, and then concentrated nitric acid is poured into tin pot and stirred, through chemistry after a while
After reaction, you can solution of tin is made：The ratio of zinc solution is 3:1 mixed liquor；
S7, copper pipe maceration extract preparation, into container, additional proportion is respectively water, butter of tin, sal-ammoniac, water：Tetrachloro
Change tin：The ratio of sal-ammoniac is 20：6：2, it is agitated uniformly after, you can copper pipe maceration extract is made；
S8, by step S5 heat after half round copper pipe immerse copper pipe maceration extract in, after 3min, take out half round copper pipe simultaneously
It is placed on electric furnace and dries, immersed again in copper pipe maceration extract after drying, takes out half round copper pipe after 8s；
S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, warp
Aluminium sheet is taken out after 8s, then brushes R grooves repeatedly with steel brush, solution of tin and zinc solution in groove is well mixed, is again dipped into mixed liquor
In, after 2s, take out aluminium sheet and be positioned on workbench；
S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, then
Make the arc of R grooves half of aluminium sheet on the half arc alignment workbench of half round copper pipe, then pressurize half round copper pipe 10s with briquetting to discharge contact
Partial air, after composition surface substantially uniformity is bonded, remove remained on surface tin, zinc liquation, completely it is cold really after, that is, realize copper
The preparation of aluminium Transition wire clip；
S11, subsequent mechanical processing is carried out to copper-aluminium transition wire clip.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, the exclusion to other embodiment is not to be taken as, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should be in the protection domain of appended claims of the present invention
It is interior.
Claims (1)
- A kind of 1. copper-aluminium transition wire clip soldering process, it is characterised in that：It comprises the following steps：S1, from length be respectively 16mm, 80mm, 70mm aluminium sheet, the milling R grooves on the top surface of aluminium sheet, the half of R grooves Footpath is 9.5mm；S2, from length, thickness, radius be respectively 80mm, 3mm, 9.5mm half round copper pipe；S3, aluminium sheet cleaning, aluminium sheet is put into 10% sodium hydroxide solution, and surface of aluminum plate is removed by sodium hydroxide solution On oil stain and debris, impregnate 6 ~ 10min after take out, the sodium hydroxide solution in surface of aluminum plate is cleaned using clear water, is realized The cleaning of aluminium sheet；S4, half round copper pipe cleaning, half round copper pipe is put into dust technology, the dirt in semicircle copper pipe surface is removed by dust technology Stain and cupric oxide, taken out after impregnating 6 ~ 10min, clean the dust technology in semicircle copper pipe surface using clear water, realize semicircle copper The cleaning of pipe；S5, will clean after aluminium sheet and half round copper pipe be placed on electric furnace and be heated to 400 ~ 450 DEG C, it is stand-by；S6, solution of tin and zinc solution preparation, first 75% tin material and 25% zinc material are added in tin pot, then tin pot is heated to 400 ~ 450 DEG C melt tin material and zinc material, and then concentrated nitric acid is poured into tin pot and stirred, through chemistry after a while After reaction, you can the volume ratio of the obtained mixed liquor being made up of solution of tin and zinc solution, solution of tin and zinc solution is 3:1；S7, copper pipe maceration extract preparation, water, butter of tin, sal-ammoniac, water are added into container：Butter of tin：The ratio of sal-ammoniac Example is 10 ~ 20：1~6：0.5 ~ 2, it is agitated uniformly after, you can copper pipe maceration extract is made；S8, by step S5 heat after half round copper pipe immerse copper pipe maceration extract in, after 2 ~ 3min, take out half round copper pipe simultaneously It is placed on electric furnace and dries, immersed again in copper pipe maceration extract after drying, takes out half round copper pipe after 6 ~ 8s；S9, by step S5 heat after aluminium sheet and step S8 in half round copper pipe immerse tin pot in mixed liquor in, through 6 ~ 8s After take out aluminium sheet, then brush R grooves repeatedly with steel brush, be well mixed solution of tin and zinc solution in groove, be again dipped into mixed liquor, After 1 ~ 2s, take out aluminium sheet and be positioned on workbench；S10, copper-aluminium transition wire clip preparation, half round copper pipe for sticking tin, zinc liquation is first taken out from step S9 pot, then make half Round copper pipe half arc alignment workbench on aluminium sheet the arc of R grooves half, then with briquetting pressurize half 5 ~ 10s of round copper pipe with discharge briquetting with Air between half round copper pipe, after composition surface substantially uniformity is bonded between briquetting and half round copper pipe, remove semicircle copper pipe surface After residual tin, zinc liquation, completely cooling, that is, realize the preparation of copper-aluminium transition wire clip；S11, subsequent mechanical processing is carried out to copper-aluminium transition wire clip.
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| CN201610394668.8A CN106099601B (en) | 2016-06-07 | 2016-06-07 | A kind of copper-aluminium transition wire clip soldering process |
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| CN106099601B true CN106099601B (en) | 2018-03-30 |
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| CN106862691B (en) * | 2017-03-08 | 2019-02-15 | 贵州电网有限责任公司电力科学研究院 | A kind of copper-aluminium transition connection terminal soldering method |
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| CN201812934U (en) * | 2010-05-14 | 2011-04-27 | 安徽钛钴新金属有限公司 | Copper-aluminum transition connecting clamp adopting pressing connection |
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| CN103022851A (en) * | 2012-12-21 | 2013-04-03 | 东莞市金澜电工材料有限公司 | Novel copper-aluminum transition plate production technology covering copper on double faces at one end of aluminum plate |
| CN105364293A (en) * | 2014-08-12 | 2016-03-02 | 青岛百键城环保科技有限公司 | Copper and aluminum welding process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101045268A (en) * | 2006-04-01 | 2007-10-03 | 扬州市飞鸿电材厂 | Process for flash welding copper-aluminium transition equipment cable clamp |
| CN101596632A (en) * | 2009-07-03 | 2009-12-09 | 西安交通大学 | The method for welding of aluminium and copper material in a kind of air atmosphere |
| CN201812934U (en) * | 2010-05-14 | 2011-04-27 | 安徽钛钴新金属有限公司 | Copper-aluminum transition connecting clamp adopting pressing connection |
| CN102513637A (en) * | 2011-11-25 | 2012-06-27 | 广东电网公司电力科学研究院 | Copper-aluminum (Cu-Al) braze welding process of copper-aluminum transition wire clamp |
| CN103022851A (en) * | 2012-12-21 | 2013-04-03 | 东莞市金澜电工材料有限公司 | Novel copper-aluminum transition plate production technology covering copper on double faces at one end of aluminum plate |
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