CN102139401A - Clad welding method of large-size copper-clad aluminium wire - Google Patents
Clad welding method of large-size copper-clad aluminium wire Download PDFInfo
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- CN102139401A CN102139401A CN2010105463834A CN201010546383A CN102139401A CN 102139401 A CN102139401 A CN 102139401A CN 2010105463834 A CN2010105463834 A CN 2010105463834A CN 201010546383 A CN201010546383 A CN 201010546383A CN 102139401 A CN102139401 A CN 102139401A
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Abstract
The invention relates to a clad welding method of a large-size copper-clad aluminium wire, which is characterized by comprising the following steps of: conveying a copper strip and an aluminum core while cleaning the surface oxide layers of the copper strip and the aluminum core; regulating the speed of the copper strip and the aluminum core to ensure that the copper strip and the aluminum core synchronously advance; twisting the copper strip during the synchronous advancing process of the copper strip and the aluminum core to ensure that the copper strip encases the aluminum core till the copper strip is shaped like a round tube; welding the butt joint edges of the copper strip to form a copper-clad aluminium wire; and removing the residual stress of the copper-clad aluminium wire through a heat treatment method. By adopting the clad welding method provided by the invention, the problems that the burr is easy to emerge, the combination of copper and aluminium is poor, the enamel covering is too soft and easy to break and the jointing is difficult in the process of copper-clad aluminium cladding can be effectively solved.
Description
Technical field
The present invention relates to the clad welded method, specially refer to the clad welded method of large size copper alclad line.
Background technology
Enamel-covered wire is a principal item of winding wire, is made up of conductor and two ones of insulating barriers, and bare wire forms through repeatedly painting, curing behind annealing softening again.Promptly meet standard-required but produce, satisfy the product of customer requirement again and be not easy, it is subjected to raw material quality, technological parameter, production equipment, factor affecting such as environment, therefore, the mass property of various enamel-covered wires has nothing in common with each other, but all possesses mechanical performance, chemical property, electrical property, hot property four big performances.
Copper-in-aluminum enameled wire is comparatively use always in the enamel-covered wire a kind of.Copper-in-aluminum enameled wire is to adopt copper clad aluminum material to make the electromagnet line of inner wire, and its characteristic combines the good electric conductivity of copper and the lightweight advantage of aluminium between copper aluminium.
The present extensive use of copper-in-aluminum enameled wire field is in high frequency transformer, common transformer, inductance, and solenoid, motor comprise the higher fields such as motor of environmental requirement such as family expenses motor, various micromachine and compressor.But because the narrow-mindedness of himself can not be adopted by high-power transformer usually.
The copper-in-aluminum enameled wire radius of big specification is thicker, and resistivity is less, is applicable to high-power transformer, but the burr that occurs easily in its clad welded process, not copper aluminium combination not good, and enamel-cover is crossed soft easily broken, the joint difficulty.
Summary of the invention
At the problems referred to above, main purpose of the present invention provides a kind of clad welded method of large size copper alclad line, can produce satisfactory large size copper alclad line.
In order to solve an above-mentioned difficult problem, the scheme that the present invention takes is: a kind of clad welded method of large size copper alclad line comprises following steps:
1) surface oxide layer of copper strips and aluminium core limit cleaning copper strips and aluminium core is transported on the limit;
2) speed of adjusting copper strips and aluminium core is advanced copper strips and aluminium core synchronously;
3) in copper strips and the synchronous traveling process of aluminium core, reverse copper strips, make copper strips encase the aluminium core, cylindrical to copper strips;
4) the welding copper strips to edge fit, form copper-clad aluminum conductor:
5), remove the residual stress of copper-clad aluminum conductor by heat treatment method.
Further, aluminium core diameter before coating is 12mm.
Further, the thickness of copper strips is 0.41mm.
Further, the machine of cleaning copper strips and aluminium wicking surface oxide layer is a sander.
Further, control copper strips and the aluminium core speed device speed measuring device for being associated with control system feeds back the speed of copper strips and aluminium core by control system, regulates the power set that driving copper strips and aluminium core enter the clad welded device.
Further, argon arc welding is adopted in welding.
Further, welder is provided with the microcam that is used to observe the solder joint situation.
Further, heat treatment method is annealing.
The present invention adopts above method, has solved the burr that copper cover aluminum occurs in coating easily, not copper aluminium combination not good, and enamel-cover is crossed soft easily broken, the joint difficulty.
The specific embodiment
The copper-in-aluminum enameled wire of big specification, it comprises heart yearn and the enamelled coating that is positioned at the heart yearn outside, and the enamelled coating layer envelopes described heart yearn, and heart yearn comprises the aluminium core and envelopes the copper layer of aluminium core that the diameter of heart yearn is 3.000-5.000mm.The weight of copper layer accounts for the 30%-40% of described heart yearn weight.Enamelled coating comprises the ground floor enamelled coating and envelopes the second layer enamelled coating of ground floor enamelled coating.Ground floor enamelled coating material is the heat-resistant polyester material, and its thickness is 0.02mm.Second layer enamelled coating material is a polyester imines, and its thickness is 0.10mm.
The core line diameter of the copper-in-aluminum enameled wire of big specification is 3.000-5.000mm, and resistivity is at normal temperatures smaller or equal to 0.0257 Ω mm
2/ m, thermal shock (temperature: 200 ℃, extend 25%, time 30min) enamelled coating does not ftracture anti-solvent: the hardness of soaking the back paint film in standard solvent should be not less than " H ", and MBV (room temperature) is 2800V.
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be those skilled in the art will recognize that.
A kind of clad welded method of large size copper alclad line comprises following steps:
1) surface oxide layer of copper strips and aluminium core limit cleaning copper strips and aluminium core is transported on the limit;
2) speed of adjusting copper strips and aluminium core is advanced copper strips and aluminium core synchronously;
3) in copper strips and the synchronous traveling process of aluminium core, reverse copper strips, make copper strips encase the aluminium core, cylindrical to copper strips;
4) the welding copper strips to edge fit, form copper-clad aluminum conductor;
5), remove the residual stress of copper-clad aluminum conductor by annealing heat treatment.
First step during clad welded in the important production stage of copper-in-aluminum enameled wire is positioned at before drawing and the japanning step, is the important key of decision finished product rate.Because core line diameter is thicker, the drawing number of times reduces, and the conjugation of copper strips and aluminium core reduces, in the face of the conjugation of high request, and aluminium core diameter 12mm before employing coats on the technology, copper strips thickness is 0.41mm, guarantees that copper clad aluminum conductor resistance can replace enamel-covered wire.
The machine of cleaning copper strips and aluminium wicking surface oxide layer is a sander.
Control copper strips and the aluminium core speed device speed measuring device for being associated with control system feeds back the speed of copper strips and aluminium core by control system, regulates the power set that driving copper strips and aluminium core enter the clad welded device.
Argon arc welding is adopted in welding.Welder is provided with the microcam that is used to observe the solder joint situation, is used for monitoring in real time pad.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. the clad welded method of a large size copper alclad line is characterized in that comprising following steps:
1) surface oxide layer of copper strips and aluminium core limit cleaning copper strips and aluminium core is transported on the limit;
2) speed of adjusting copper strips and aluminium core is advanced copper strips and aluminium core synchronously;
3) in copper strips and the synchronous traveling process of aluminium core, reverse copper strips, make copper strips encase the aluminium core, cylindrical to copper strips;
4) the welding copper strips to edge fit, form copper-clad aluminum conductor;
5), remove the residual stress of copper-clad aluminum conductor by heat treatment method.
2. clad welded method as claimed in claim 1 is characterized in that: described aluminium core diameter before coating is 12mm.
3. clad welded method as claimed in claim 1 is characterized in that: the thickness of described copper strips is 0.41mm.
4. clad welded method as claimed in claim 1 is characterized in that: the machine of described cleaning copper strips and aluminium wicking surface oxide layer is a sander.
5. clad welded method as claimed in claim 1, it is characterized in that: described control copper strips and aluminium core speed device speed measuring device for being associated with control system, feed back the speed of copper strips and aluminium core by control system, regulate driving the power set that copper strips and aluminium core enter the clad welded device.
6. clad welded method as claimed in claim 1 is characterized in that: argon arc welding is adopted in described welding.
7. as claim 1 or 6 described clad welded methods, it is characterized in that: described welder is provided with the microcam that is used to observe the solder joint situation.
8. clad welded method as claimed in claim 1 is characterized in that: described heat treatment method is annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105463834A CN102139401A (en) | 2010-11-12 | 2010-11-12 | Clad welding method of large-size copper-clad aluminium wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105463834A CN102139401A (en) | 2010-11-12 | 2010-11-12 | Clad welding method of large-size copper-clad aluminium wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102139401A true CN102139401A (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105463834A Pending CN102139401A (en) | 2010-11-12 | 2010-11-12 | Clad welding method of large-size copper-clad aluminium wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640403A (en) * | 2019-09-24 | 2020-01-03 | 常州市明通金属复合材料有限公司 | Processing technology for copper-clad aluminum wire cladding stage and cutting equipment special for processing technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2288808Y (en) * | 1996-08-22 | 1998-08-26 | 戴雅康 | Cladding welding device for producing aluminium wire covered with copper |
| JP2000237869A (en) * | 1999-02-17 | 2000-09-05 | Ishikawajima Harima Heavy Ind Co Ltd | Butt welding method for tubes |
| CN101051541A (en) * | 2007-05-09 | 2007-10-10 | 大连信瑞科技有限公司 | Method for producing copper cladded aluminum row |
| CN101143396A (en) * | 2006-09-27 | 2008-03-19 | 许晓华 | Aluminium wire covered with copper enamel-covered wire and copper wire welding method |
| CN101211682A (en) * | 2006-12-28 | 2008-07-02 | 大连新达金属材料有限公司 | Copper cladding aluminum core material manufacturing technique |
| CN101530944A (en) * | 2008-03-10 | 2009-09-16 | 金华市恒飞电工材料有限公司 | Method for controlling wire rod routing in production process of copper-clad aluminum materials by clad-welding method |
-
2010
- 2010-11-12 CN CN2010105463834A patent/CN102139401A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2288808Y (en) * | 1996-08-22 | 1998-08-26 | 戴雅康 | Cladding welding device for producing aluminium wire covered with copper |
| JP2000237869A (en) * | 1999-02-17 | 2000-09-05 | Ishikawajima Harima Heavy Ind Co Ltd | Butt welding method for tubes |
| CN101143396A (en) * | 2006-09-27 | 2008-03-19 | 许晓华 | Aluminium wire covered with copper enamel-covered wire and copper wire welding method |
| CN101211682A (en) * | 2006-12-28 | 2008-07-02 | 大连新达金属材料有限公司 | Copper cladding aluminum core material manufacturing technique |
| CN101051541A (en) * | 2007-05-09 | 2007-10-10 | 大连信瑞科技有限公司 | Method for producing copper cladded aluminum row |
| CN101530944A (en) * | 2008-03-10 | 2009-09-16 | 金华市恒飞电工材料有限公司 | Method for controlling wire rod routing in production process of copper-clad aluminum materials by clad-welding method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640403A (en) * | 2019-09-24 | 2020-01-03 | 常州市明通金属复合材料有限公司 | Processing technology for copper-clad aluminum wire cladding stage and cutting equipment special for processing technology |
| CN110640403B (en) * | 2019-09-24 | 2021-05-04 | 常州市明通金属复合材料有限公司 | Processing technology for copper-clad aluminum wire cladding stage and cutting equipment special for processing technology |
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Application publication date: 20110803 |