CN100583313C - A short process making method for copper-coated aluminum complex lead - Google Patents
A short process making method for copper-coated aluminum complex lead Download PDFInfo
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- CN100583313C CN100583313C CN200810057669A CN200810057669A CN100583313C CN 100583313 C CN100583313 C CN 100583313C CN 200810057669 A CN200810057669 A CN 200810057669A CN 200810057669 A CN200810057669 A CN 200810057669A CN 100583313 C CN100583313 C CN 100583313C
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Abstract
The invention relates to a short flow preparation method for a copper-clad aluminum composite wire, relating to bimetal layered composite wire materials. The preparation steps are as follows: groove rolling of copper-clad aluminum composite blanks after horizontal continuous casting composite formation is performed; the rolling speed range is 30 to 1200 meters per minute; the single-pass section scalage is 10 percent to 50 percent; when the multi-pass rolling total deformation reaches 70 percent to 99 percent, intermediate annealing is performed on the copper-clad aluminum composite materials; the annealing temperature is 150 to 450 DEG C; the annealing time is 0.5 to 3 hours; multi-pass drawing processing is performed on wire stocks after rolling formation; the single-pass section scalage is 10 percent to 30 percent; the drawing speed is 1 to 20 meters per minute; intermediate annealing can be implemented as required; the annealing temperature is 100 to 400 DEG C; the annealing time is 0.5 to 1 hour. The invention obviously shortens the technological flow and greatly reduces the production cost; moreover, the prepared composite wire has superior interface quality.
Description
Technical field
The present invention relates to a kind of bimetallic stratiform compound wire preparation methods, especially a kind of cross section is the short process making method of the copper-coated aluminum complex lead of circle.
Background technology
In recent years, quick rise along with the copper valency, copper-coated aluminum complex lead has in light weight, advantages such as relative cost is low, price steadiness owing to comparing with copper cash, be subjected to people's great attention, be used as the substitute products of fine copper lead, be widely used in high frequency cable and shielding conductor, in addition, also can be used for power line, electric welding machine line, automobile batteries line and electrical equipment and electrical coil etc.
The production method of the copper cladding aluminum conductor of open report mainly contains two kinds.(1) clad welded method: with copper strips and aluminium bar after repeatedly strictness is cleaned is raw material, adopts the coating former that copper strips is coated on the aluminium bar, under the protective atmosphere condition that copper strips welding realization is compound, is drawn into copper-clad aluminum conductor then.The copper-clad aluminum conductor of the method preparation need through annealing in process with improve interface bond strength [Peng Xingkui. a kind of compound copper-aluminium wire and production technology [P]. Chinese invention patent, application number 98112410.0, applying date 1998-03-26].(2) rolling crimping method: utilize copper strips after the roll applied pressure will clean to be crimped on and make the copper-clad aluminum conductor base with aluminum core line, then the line base is drawn into copper-clad aluminum conductor [Yang Xishan. roll compacting method production of copper alclad line apparatus [P]. Chinese utility model patent, patent No. ZL200320105377.0].In addition, other preparation method of copper-clad aluminum conductor also has: jacket hubbing, quiet liquid extrusion, blast composite algorithm etc.The common issue with that the above-mentioned method for preparing copper-clad aluminum conductor exists is: (1) process all is to adopt the solid phase composite algorithm, promptly make two kinds of metals on combination interface, form engagement or mechanical bond by plastic deformation, again through diffusion heat treatments, final part metals combination, the part mechanical bond of forming, interface bond strength is lower; (2) because the working modulus of solid phase composite demand first passage is big, and two kinds of metals of compound tense are not an integral body, and reason such as the difference of two kinds of flow of metal performances is big, defective such as be easy to produce layering and peel off; (3) these class methods exist the technology more complicated, and the operation that relates to is many, thereby production cost is higher; (4) in the recombination line base manufacture process, blank preliminary treatment, intermediate preheating be need carry out, energy consumption and environmental pressure increased.
The direct compound forming technique of copper cover aluminum composite horizontal continuous casting [thank build new etc. a kind of coating material horizontal continuous casting direct recombination forming apparatus and technology [P]. Chinese invention patent, patent No. ZL200610112817.3, authorize a day 2008-01-18], for the efficient production of high-quality copper alclad composite blank provides new approach.Based on this patent of invention, can develop high-quality copper cladding aluminum conductor and short-flow production method thereof.
Summary of the invention
The present invention be for solve the existing complex process of existing preparation copper-coated aluminum complex lead method, operation is many, shortcomings such as the uniformity of product quality and performance, consistency instability, propose to adopt the high-performance copper alclad composite blank of the direct combined shaping of horizontal casting, in conjunction with the short-flow production method of follow-up rolling or drawing, prepare the high-quality copper-coated aluminum complex lead.
Step of the present invention is as follows:
1. it is rolling the copper cover aluminum composite blank of horizontal casting combined shaping to be carried out the pass multi-pass, preparation φ 12～20mm line base.Technological parameter is: the mill speed scope is 30～1200m/min, and the single pass reduction of area is 10%～50%;
2. step 1. in the rolling total deformation of multi-pass reach at 70%～99% o'clock, the copper cover aluminum composite material is carried out intermediate annealing, annealing temperature is 150～450 ℃, annealing time is 0.5～3h;
3. roll forming line base is carried out multi-pass drawing processing, until the final finished size.Technological parameter is: single pass reduction of area 10%～30%, drawing speed 1～20m/min.
The direct composite forming copper cladding aluminum composite blank of described horizontal casting is with after fine copper and the fine aluminium fusing, through a graphite mold and dummy ingot mechanism, when continuous casting goes out copper pipe, realize being filled into aluminium liquid in the copper pipe continuously and solidifying, obtain the copper cover aluminum continuous casting billet that copper aluminium is realized metallurgical binding.Technological parameter is: copper liquid temperature is 1120～1280 ℃, and temperature of aluminum liquid is 680～860 ℃, and casting speed is 30～120mm/min, and copper cover aluminum composite blank diameter is φ 20～φ 150mm.
Step 3. in, can implement intermediate annealing according to the needs of final performance of material or following process, annealing temperature is 100～400 ℃, annealing time is 0.5～1h.
Copper-coated aluminum complex lead cross section by the present invention's preparation is circular, is composited by core body aluminium and coating layer copper, and it is 10%～25% that fine copper coats the area ratio, and the thickness of copper layer evenly distributes; Compound wire diameter (external diameter) is φ 0.05～φ 10mm.
The advantage of copper-coated aluminum complex lead provided by the invention and production method thereof is: (1) adopts the direct combined shaping method of horizontal casting to prepare the copper cover aluminum blank, directly follow-up rolling or drawing, the preform operation of solid phase composite algorithm copper pipe or copper strips and aluminium bar, complicated cleaning and Compound Machining have been saved, therefore significantly shorten technological process, greatly reduced production cost; (2) because the copper cover aluminum continuous casting billet is that solid-liquid is compound, the interface of copper and aluminium does not contact with atmosphere in recombination process, can obtain the copper aluminium interface of non-oxidation and pollution, and the interface is a metallurgical binding, thereby blank performance is higher, thereby the compound wire that guarantees preparation has good interface quality; (3) have the characteristics of energy-conserving and environment-protective.
Embodiment
Embodiment 1: be of a size of the preparation of φ 1.0mm copper-coated aluminum complex lead.
1. adopt the direct compound forming technique of horizontal casting to prepare the copper cover aluminum composite blank, copper liquid temperature is 1210 ℃, and temperature of aluminum liquid is 775 ℃, and casting speed is 60mm/min, and copper cover aluminum composite blank diameter is φ 30mm, and the copper aspect is long-pending than being 20%;
2. to step 1. in prepared copper cover aluminum blank, carry out 5 passage groove rollings, preparation φ 12mm line base.Mill speed is 30m/min; The single pass reduction of area is 20～40%, reduces gradually total each passage economy increases with processing stage, and wherein, line base diameter need be rolling through 2 passages when φ 30～20mm, and wherein first passage is that 35%, the second passage is 30%; Line base diameter need be rolling through 3 passages when φ 20～12mm, and adopting average single pass reduction of area is 28%.
3. anneal to rolling back line base, annealing temperature is 250 ℃, and annealing time is 1h.
4. the line base after the annealing being carried out about 22 passes of drawing processing, is φ 1.0mm wire rod until diameter.Drawing speed is 3～4m/min, and the single pass reduction of area is 15～25%, and average single pass reduction of area is 20%, reduces total each passage reduction of area increases with processing stage.
5. in the step course of processing 4., when the multi-pass total drawing deformation reaches 90%, cuprum-cladding-aluminium composite wire is carried out intermediate annealing, annealing temperature is 200 ℃, and annealing time is 0.5h.
Embodiment 2: be of a size of the preparation of φ 2.5mm copper-coated aluminum complex lead.
1. adopt the direct compound forming technique of horizontal casting to prepare the copper cover aluminum composite blank, copper liquid temperature is 1220 ℃, and temperature of aluminum liquid is 780 ℃, and casting speed is 70mm/min, and copper cover aluminum composite blank diameter is φ 40mm, and the copper aspect is long-pending than being 25%;
2. to step 1. in prepared copper cover aluminum blank, carry out 8 passage groove rollings, preparation φ 12mm line base.Mill speed is 45m/min; The passage reduction of area is 20～40%, reduces gradually total each passage economy increases with processing stage, and wherein, line base diameter need be rolling through 2 passages when φ 40～30mm, and adopting average single pass reduction of area is 30%; Line base diameter need be rolling through 2 passages when φ 30～20mm, and adopting average single pass reduction of area is 28%; Line base diameter need be rolling through 4 passages when φ 20～12mm, and adopting average single pass reduction of area is 24%.
3. anneal to rolling back line base, annealing temperature is 300 ℃, and annealing time is 1.5h.
4. the line base after the annealing being carried out about 16 passes of drawing processing, is φ 2.5mm wire rod until diameter.Drawing speed is 5m/min, and the passage reduction of area is 15～20%, and average single pass reduction of area is 18%, reduces total each passage reduction of area increases with processing stage.
5. in the step course of processing 4., when the multi-pass total drawing deformation reaches 90%, cuprum-cladding-aluminium composite wire is carried out intermediate annealing, annealing temperature is 200 ℃, and annealing time is 0.5h.
Claims (3)
1, a kind of short process making method of copper-coated aluminum complex lead adopts the horizontal casting combined shaping to prepare the copper cover aluminum composite blank, it is characterized in that preparation process is as follows:
1. it is rolling the copper cover aluminum composite blank of horizontal casting combined shaping to be carried out the pass multi-pass, and the mill speed scope is 30～1200m/min, and the single pass reduction of area is 10%～50%, prepares φ 12～20mm line base;
2. step 1. in the rolling total deformation of multi-pass reach at 70%～99% o'clock, the copper cover aluminum composite material is carried out intermediate annealing, annealing temperature is 150～300 ℃, annealing time is 0.5～3h;
3. roll forming line base is carried out multi-pass drawing processing, single pass reduction of area 10%～30%, drawing speed 1～20m/min is until the final finished size.
2, the short process making method of copper-coated aluminum complex lead as claimed in claim 1, it is characterized in that, the technological parameter of described horizontal casting composite forming copper cladding aluminum composite blank is: copper liquid temperature is 1120～1280 ℃, temperature of aluminum liquid is 680～860 ℃, casting speed is 30～120mm/min, and copper cover aluminum composite blank diameter is φ 20～φ 150mm.
3, the short process making method of copper-coated aluminum complex lead as claimed in claim 1 is characterized in that, step 3. in, can implement intermediate annealing according to final performance of material or following process needs, annealing temperature is 100～400 ℃, annealing time is 0.5～1h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050188A (en) * | 2012-12-21 | 2013-04-17 | 江苏中容铜业有限公司 | Method for producing oxygen-free copper alloy-clad aluminum conductor for use in communication |
| CN109909479A (en) * | 2018-12-27 | 2019-06-21 | 北京科技大学 | A kind of bimetallic composite wire material short flow process |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102161088A (en) * | 2010-12-16 | 2011-08-24 | 张纪云 | Improved copper-clad aluminum wire and preparation method thereof |
| CN105989229B (en) * | 2015-02-14 | 2018-06-01 | 中国石油天然气股份有限公司 | Reservoir permeability determines method and apparatus |
| CN105170689A (en) * | 2015-10-15 | 2015-12-23 | 烟台孚信达双金属股份有限公司 | Preparation technique for copper-aluminum composite round bar |
| CN105499543A (en) * | 2015-12-23 | 2016-04-20 | 上海交通大学 | Method for preparing double-metal composite material by solid-liquid combination of solid-state copper material and drawing composition |
| CN105845192B (en) * | 2016-03-22 | 2017-04-26 | 长沙理工大学 | Copper, aluminum and steel three-layer clad composite wire and formation method thereof |
| CN105750356A (en) * | 2016-04-22 | 2016-07-13 | 罗奕兵 | Preparation method of silver clad aluminum composite filament |
| CN115106796B (en) * | 2022-06-28 | 2024-01-23 | 中航上大高温合金材料股份有限公司 | GH6159 alloy large-size cold-drawn bar production process |
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| 充芯连铸法制备铜包铝双金属复合材料的研究. 吴春京，于治民，谢建新，吴渊.铸造，第53卷第15期. 2004 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050188A (en) * | 2012-12-21 | 2013-04-17 | 江苏中容铜业有限公司 | Method for producing oxygen-free copper alloy-clad aluminum conductor for use in communication |
| CN103050188B (en) * | 2012-12-21 | 2015-04-15 | 江苏中容铜业有限公司 | Method for producing oxygen-free copper alloy-clad aluminum conductor for use in communication |
| CN109909479A (en) * | 2018-12-27 | 2019-06-21 | 北京科技大学 | A kind of bimetallic composite wire material short flow process |
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