CN101131892A - Manufacturing method for copper covered flat aluminum wire - Google Patents
Manufacturing method for copper covered flat aluminum wire Download PDFInfo
- Publication number
- CN101131892A CN101131892A CNA2007100127854A CN200710012785A CN101131892A CN 101131892 A CN101131892 A CN 101131892A CN A2007100127854 A CNA2007100127854 A CN A2007100127854A CN 200710012785 A CN200710012785 A CN 200710012785A CN 101131892 A CN101131892 A CN 101131892A
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- China
- Prior art keywords
- copper
- wire
- carried
- temperature
- inert gas
- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 37
- 239000010949 copper Substances 0.000 title claims abstract description 37
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- 239000004411 aluminium Substances 0.000 claims description 11
- 238000005491 wire drawing Methods 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Metal Rolling (AREA)
Abstract
The present invention relates to a production method of copper clad aluminum wire, especially a production method of copper clad aluminum flat wire. Its process steps are shown as follow: (1) the copper clad aluminum welding is carried through under the protection of inert gas; (2) a series of drawing are carried through by the dies of drawing machine, and the wire temperature should be kept below 240deg.C when the drawing is going on, until the scheduled total deformation is achieved; (3) the anneal of diffusion restricted layer is carried through in annealing furnace which is filled with inert gas for protection, and when the scheduled temperature is reached, this temperature will be kept for 60-150 minutes; (4) at least one time of rolling should be taken on the high mill of which the roll diameter matches to wire diameter, and the scheduled size should be reached; (5) the finish drawing is carried on drawing machine with rectangle dies to reach the geometry size of a finished product; (6) softening, anneal and wire collection are carried through in inert gas environment. The present invention has advantages of saving 53-60% of copper material, stable and reliable performance, and absorbs the both advantages of copper and aluminum. The contact surface has reached metallurgical bonding, and the self weight has been reduced.
Description
Technical field
The present invention relates to the manufacture method of a kind of copper-clad aluminium wire production method, particularly a kind of copper clad aluminum flat wire.The winding that is suitable for motor, transformer and electric equipment uses in producing.
Background technology
Although advantages such as what well-known fine copper electric wire had conducts electricity very well, and resistance is little, and mechanical strength is big are because more expensive, the big cost height of weight of its price makes its application that certain limitation be arranged.
There is copper-clad aluminum conductor to come out for these reasons in recent years, both advantages are organically blended in a kind of conductor,, can save a large amount of copper materials again guaranteeing both to have reduced deadweight, cost under the prerequisite of dependability.Therefore once coming out very strong competitive advantage is arranged, in electric power system, be used widely such as low-voltage distribution, distribution board, Electric Machine Control center, instrument board, bus-bar chamber, friendship frame bus duct system high voltage power distribution and generating set etc., in motor, transformer and the production of electric equipment winding of big electric current, just can't replace the copper strip conductor.Yet at present copper strap wire is also widely applied in producing at heavy-duty motor and transformer, electric equipment winding.Cause motor, transformer and electric equipment from great, copper material consumption is many, cost is high.But up to the present, also still find no the report of copper clad aluminum flat wire product.
Summary of the invention
The present invention is directed to the problem that prior art exists, a kind of product quality of guaranteeing is provided, stable and reliable for performance, copper aluminium contact surface reaches metallurgical binding, alleviate deadweight saves copper material, the manufacture method of the copper clad aluminum flat wire that can keep the intensity of copper and surface chemistry quality again, reduces cost.
The processing step of method of the present invention is as follows:
(1), copper aluminium coats, welds under inert gas shielding;
(2), copper cover aluminum base line draws through a series of wire drawing dies of wire drawing machine, the temperature of line should be lower than 240 ℃ during drawing, and reaches predetermined total deformation;
(3), pack into but the annealing furnace of inert gas shielding in, carry out diffusion restriction layer annealing, reach predetermined temperature after, be incubated 60-150 minute;
(4), once rolling at least on directly than the two roller flat roll mills that are complementary at roller diameter and line, and reach preliminary dimension;
(5), the line base after rolling, use the rectangle wire drawing die, on drawbench, carry out end product drawing, reach the physical dimension of finished product;
(6), in inert atmosphere, advance softening annealing, take-up.
The weight ratio of its copper of copper cover aluminum in the described operation (1) is between 40-47%.
In the described operation (2), said total deformation is not less than 60%.
Annealing temperature in the described operation (3) is 290-350 ℃, and the thickness of said diffusion layer is between 0.02-0.08mm.
Said roller diameter and line are directly than being 25-50 in the described operation (4): 1.
The present invention compared with prior art, because processing arrangement is reasonable, carry out drawing processing at a certain temperature at the retention wire base, carry out diffusion restriction layer annealing after producing aximal deformation value, make phase counterdiffusion between the copper aluminium contact surface, in order to the diffusion layer that forms optimum thickness, again through rolling, end product drawing, series of process measure such as softening, and have through evidence and to save copper material 53-60%, satisfy instructions for use fully with pure flat cable copper conductor, stable and reliable for performance, melt in a kind of composite conductor both advantages of copper aluminium are organic, contact surface reaches metallurgical binding, and diffusion layer alleviates own wt and reduces cost in the 0.02-0.08mm scope.Can obtain applying and to have obvious social and economic implications as the present invention.
Annealing temperature is definite in the process of the present invention, is to determine according to the size of deflection, is advisable with the lower limit of said temperature as the deflection general election, otherwise selects for use the upper limit of said temperature to be advisable.Then depend on the size of batch as for its temperature retention time, if batch is big more, temperature retention time is long more.
Because the line base reaches 60% distortion through the cross section reduction of area, make the closely contact of copper aluminium surface, the annealing of diffusion restriction layer under above-mentioned condition again makes phase counterdiffusion between the copper aluminium contact-making surface, formation is the metal diffusion layer of middle phase with CuA12, and is controlled in the 0.02-0.08mm scope.Because crossing conference, the thickness of metal diffusion layer make the fragility increase of diffusion layer will cause copper aluminium faying face break apart in the compound copper-aluminium wire deformation process afterwards; Otherwise diffusion layer is too thin, then is unfavorable for the metallurgical binding of faying face.Therefore, only in optimum range, could realize the strong bonded of copper aluminium.
Be rolled on two roller flat roll mills about rolling process, if roller diameter is excessive, can make line base distortion width deficiency, cause that greatly limit portion cracking and rolling thickness are inhomogeneous otherwise then spread, therefore, roller diameter and line are directly than being controlled at 25-50: 1 is advisable.When lenticular wire flakiness ratio during less than 4: 1, adopt one time rolling deformation, when width than greater than 4: 1 the time, adopts twice or repeatedly rolling, reach the dimensional requirement of this operation reservation allowance.
As for the end product drawing operation, the drawing of finalizing the design on the drawbench of line base in rectangular mold after rolling reaches the physical dimension of finished product.
Embodiment
Embodiment
Content of the present invention is further described in detail by embodiment.Its technical process is as follows: the copper sleeve of being with the aluminium core through the copper strips and the aluminium bar of removing surface under inert gas environment in the middle of one group of hole type roll clod wash becomes, its pipe seam welds with argon arc welding, both also leave suitable gap, and wherein the weight ratio of copper is in the 40-47% scope; The copper-clad aluminum conductor base draws through a series of wire drawing dies on wire drawing machine, and the temperature of its base line should be lower than 240 ℃, and total deformation is not less than 60%; Carry out diffusion restriction layer annealing in the well formula of the nitrogen protection of packing into, box or bell furnace, annealing temperature is incubated 60-150 minute between 290-350 ℃; Be rolled on two roller flat roll mills, the ratio in its roller diameter and line footpath is at 25-50: in 1 the scope.When lenticular wire flakiness ratio during less than 4: 1, adopt a rolling deformation and reach given size, when flakiness ratio greater than adopting repeatedly rolling deformation of twice fire at 4: 1, reach this operation given size; Reserve thickness at rolling process and carry out end product drawing at the line base of the allowance of 0.02-0.05mm, the drawing and reach the final physical dimension of finished product of on drawbench, finalizing the design with the rectangle wire drawing die at 0.05-0.15mm, width; Carry out softening annealing under inert gas shielding, annealing temperature is 275-325 ℃, temperature retention time 1.5-3 hour.
Claims (5)
1. the manufacture method of copper clad aluminum flat wire is characterized in that processing step is as follows:
(1) copper aluminium coats, welds under inert gas shielding;
(2) copper cover aluminum base line draws through a series of wire drawing dies of wire drawing machine, and the temperature of line should be lower than 240 ℃ during drawing, and reaches predetermined total deformation;
(3) be incorporated with and carry out diffusion restriction layer annealing in the annealing furnace of inert gas shielding, reach predetermined annealing temperature after, be incubated 60-150 minute;
(4) once rolling at least on directly than the two roller flat roll mills that are complementary at roller diameter and line, and reach preliminary dimension;
(5) the line base after rolling carries out end product drawing with the rectangle wire drawing die on drawbench, reach the physical dimension of finished product;
(6) in inert atmosphere, carry out softening annealing, take-up.
2. manufacture method according to claim 1 is characterized in that the copper-clad in the described operation (1) is drawn together the weight ratio of its copper between 40-47%.
3. manufacture method according to claim 1 is characterized in that said total deformation is not less than 60% in the described operation (2).
4. manufacture method according to claim 1 is characterized in that the predetermined annealing temperature of described operation (3) is 290-350 ℃, and the thickness of said diffusion layer is between 0.02-0.08mm.
5. manufacture method according to claim 1 is characterized in that described operation 4) in said roller diameter and line directly than being 25-50: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100127854A CN100474458C (en) | 2007-09-11 | 2007-09-11 | Manufacturing method for copper covered flat aluminum wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100127854A CN100474458C (en) | 2007-09-11 | 2007-09-11 | Manufacturing method for copper covered flat aluminum wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101131892A true CN101131892A (en) | 2008-02-27 |
| CN100474458C CN100474458C (en) | 2009-04-01 |
Family
ID=39129106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100127854A Expired - Fee Related CN100474458C (en) | 2007-09-11 | 2007-09-11 | Manufacturing method for copper covered flat aluminum wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100474458C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101564738B (en) * | 2009-06-08 | 2011-06-22 | 安徽鑫科新材料股份有限公司 | Machining process of directly pulling steel round rope into flat rope |
| CN101364459B (en) * | 2008-09-10 | 2011-10-26 | 大连松辽机电设备制造有限公司 | Copper coated aluminum bus bank production method and apparatus |
| CN102350634A (en) * | 2011-06-29 | 2012-02-15 | 宁波金田铜业(集团)股份有限公司 | Continuous production equipment for stretching, annealing and rolling brass wire rods and continuous process thereof |
| CN102468017A (en) * | 2010-11-08 | 2012-05-23 | 广东天富电气有限公司 | Production method for copper clad aluminum bus row |
| CN102623107A (en) * | 2012-04-19 | 2012-08-01 | 铜陵颐和泰新材料股份有限公司 | Production method of copper clad aluminum superfine flat wire with high width-to-thickness ratio |
| CN104439923A (en) * | 2011-08-26 | 2015-03-25 | 孙华桥 | Method for producing copper-coated aluminum bus bar of low specific resistance and good plasticity and tenacity |
| CN107570549A (en) * | 2017-07-27 | 2018-01-12 | 佛山市顺德区禾惠电子有限公司 | A kind of processing technology of FFC wire rods flat copper wire |
| CN113560365A (en) * | 2021-07-22 | 2021-10-29 | 诺克威新材料(江苏)有限公司 | Processing method for improving copper alloy wire drawing strength |
| CN114334281A (en) * | 2021-12-29 | 2022-04-12 | 苏州南达金属科技有限公司 | Preparation process of copper-clad aluminum flat wire stretched and rolled by mold |
-
2007
- 2007-09-11 CN CNB2007100127854A patent/CN100474458C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364459B (en) * | 2008-09-10 | 2011-10-26 | 大连松辽机电设备制造有限公司 | Copper coated aluminum bus bank production method and apparatus |
| CN101564738B (en) * | 2009-06-08 | 2011-06-22 | 安徽鑫科新材料股份有限公司 | Machining process of directly pulling steel round rope into flat rope |
| CN102468017A (en) * | 2010-11-08 | 2012-05-23 | 广东天富电气有限公司 | Production method for copper clad aluminum bus row |
| CN102350634A (en) * | 2011-06-29 | 2012-02-15 | 宁波金田铜业(集团)股份有限公司 | Continuous production equipment for stretching, annealing and rolling brass wire rods and continuous process thereof |
| CN104439923A (en) * | 2011-08-26 | 2015-03-25 | 孙华桥 | Method for producing copper-coated aluminum bus bar of low specific resistance and good plasticity and tenacity |
| CN102623107A (en) * | 2012-04-19 | 2012-08-01 | 铜陵颐和泰新材料股份有限公司 | Production method of copper clad aluminum superfine flat wire with high width-to-thickness ratio |
| CN107570549A (en) * | 2017-07-27 | 2018-01-12 | 佛山市顺德区禾惠电子有限公司 | A kind of processing technology of FFC wire rods flat copper wire |
| CN113560365A (en) * | 2021-07-22 | 2021-10-29 | 诺克威新材料(江苏)有限公司 | Processing method for improving copper alloy wire drawing strength |
| CN113560365B (en) * | 2021-07-22 | 2023-08-15 | 诺克威新材料(江苏)有限公司 | Processing method for improving wiredrawing strength of copper alloy |
| CN114334281A (en) * | 2021-12-29 | 2022-04-12 | 苏州南达金属科技有限公司 | Preparation process of copper-clad aluminum flat wire stretched and rolled by mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100474458C (en) | 2009-04-01 |
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