CN104669705B - Copper/aluminum composite strip and preparation method thereof - Google Patents
Copper/aluminum composite strip and preparation method thereof Download PDFInfo
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- 229910052802 copper Inorganic materials 0.000 title claims abstract description 99
- 239000010949 copper Substances 0.000 title claims abstract description 99
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000002131 composite material Substances 0.000 title claims abstract description 83
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 80
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 3
- 238000000137 annealing Methods 0.000 claims description 61
- 239000004411 aluminium Substances 0.000 claims description 30
- 230000014759 maintenance of location Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 18
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 13
- 229910000632 Alusil Inorganic materials 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 11
- 239000011261 inert gas Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000003475 lamination Methods 0.000 claims description 6
- 230000005622 photoelectricity Effects 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 27
- 239000010410 layer Substances 0.000 abstract description 20
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000007769 metal material Substances 0.000 abstract description 4
- 229910000765 intermetallic Inorganic materials 0.000 abstract description 2
- 229910000676 Si alloy Inorganic materials 0.000 abstract 3
- 241000784732 Lycaena phlaeas Species 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 235000010210 aluminium Nutrition 0.000 description 58
- 150000001875 compounds Chemical class 0.000 description 11
- 238000001953 recrystallisation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- -1 conduction Chemical compound 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000011157 advanced composite material Substances 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910018565 CuAl Inorganic materials 0.000 description 1
- 229910018563 CuAl2 Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention discloses a copper/aluminum composite strip and a preparation method thereof and belongs to the technical field of metal material machining. A surface layer of the composite strip is a copper layer, an aluminum-silicon alloy layer is arranged in the middle, a bottom layer is an aluminum layer, and the ratio of thicknesses of all the layers is 1:0.02:2; the composite strip comprises chemical components in percentage by weight as follows: 62.00% of copper, 0.05% of silicon and 37.95% of aluminum. The preparation method of the composite strip comprises steps as follows: firstly, original metal strips, namely, a copper strip, an aluminum-silicon alloy strip and an aluminum strip, are annealed, then the annealed strips sequentially pass through an uncoiling machine, a straightening machine, a polishing device, a photoelectric alignment device and a composite rolling mill for composite rolling for the first time, and finally, 8-pass finish rolling is performed. According to the copper/aluminum composite strip and the preparation method thereof, when the preparation process is compared with preparation processes of common copper/aluminum composite strips, 66.7% of a copper material in percentage by volume can be saved; one aluminum-silicon alloy layer is added in the middle, so that the copper strip and the aluminum strip are effectively prevented from directly acting to form an intermetallic compound; besides, the copper/aluminum composite strip is higher in plasticity.
Description
Technical field
The invention belongs to metal material processing technical field, be specifically related to a kind of copper/aluminum composite belt and preparation method thereof.
Background technology
Along with the performance requirement improvement more and more higher, to material structure of metal material is required more and more stronger by modern industry, single metal material cannot meet these demands, then the advanced composite material (ACM) integrating the physics of different materials, chemistry, mechanical property and price difference arises at the historic moment, this will more effectively utilize properties of materials, and overcome and make up the deficiency of homogenous material performance, thus obtain the new material that combination property is more excellent.Therefore the research emphasis developed and prepare these correlation techniques possessing excellence or property new material and the most just become contemporary metallurgical material field technology personnel, wherein low cost, the material molding technology of high performance metallic composite are not only paid attention to by engineers and technicians, and it is put into the high-technology field that state key is supported, will help in terms of policy and fund two from now on.
China is the country of a lean copper richness aluminum, consumes copper material current－carrying conductor material year and account for nearly 1/3rd of whole world copper material total amount consumed in China's electrician trade, and therefore copper material becomes China's another important strategic resource in addition to oil.Since the nineties in last century, along with nonferrous metal resource shortage aggravates, copper material price sharp rises, and causes the production of copper material manufacturing enterprise and client to be greatly improved with use cost.Therefore on the basis of ensureing original copper material serviceability, exploitation new material substitutes traditional material becomes the focus of domestic and international manufacturing enterprise research and development, uses substituting composite and then reduction cost of material to have become as domestic and international copper material and produces and a kind of development trend of application.
Metallic copper has good electric conductivity and welding performance, but scarcity of resources, processing costliness, metallic aluminium good conductivity, relative low price, but the welding of aluminum, arc extinguishing, wear-resisting and all ratio differences of copper such as conduction, heat conductivility, copper material is directly substituted with aluminium more difficult in a lot of occasions, form the composite strip of copper cover aluminum with copper cover aluminum, both can save the consumption of metallic copper, moreover it is possible to keep ductility that pure copper material had, electric conductivity, solderability, the feature such as corrosion resistance.The abundantest plus China's bauxite resource, the price of aluminum is less than copper, and its density is less than the 1/3 of copper, and this means that under conditions of weight is identical, and the length of aluminium is 3 times of fine copper material.Particularly at communication field, cable TV signal and mobile communication signal frequency are higher, general at 500-800MHZ, owing to " Kelvin effect " makes high frequency electric concentrate on the surface delivery of conductor, when carrying out information transmission with fine copper, the copper in centre does not play the effect of prevailing transmission signal, so the copper material partly substituting intermediate layer with aluminium is ideal method, can be greatly saved China and more lack and expensive copper resource.Actually more than communications field, demand king-sized copper strips wide especially with copper cover aluminum composite band replacement application surface, also will have wider application prospect in field of power transmission, and be expected to form huge industry.Exploitation is suitable for efficient, the low energy consumption complex technique that commercial scale produces, prepare copper/aluminum composite belt new material, alternative preferable new product will be provided undoubtedly to industrial circles such as the electronics that China develops rapidly, electric power, machine-building, produce significant economic benefit, and for making rational use of resources, it is ensured that national economy sustainable development has important social benefit.So the exploitation of technique is own through becoming the target that domestic and international researcher is made great efforts.
Two kinds of metals of copper/aluminum cold rolling compound after combination on interface be only physical bond, do not reach the degree of metallurgical binding, simultaneously as the inhomogeneous deformation of bi-material, more serious residual stress can be produced at matrix, the biggest to performance impact after compound.Therefore, in order to improve the combination property of composite band, it is necessary to carry out rolling after annealing.By annealing, on the one hand can make constituent element interlayer metal phase counterdiffusion, make faying face realize metallurgical binding, thus improve bond strength；On the other hand making intrinsic silicon residual stress relaxation, plasticity is restored.But, in and heat treatment process compound at copper/aluminum, the copper of interface can interact with aluminum, can form solid solution and also can form compound.The multiple hard and crisp compound such as CuAl, CuAl2, Cu2Al4, Cu4Al9 can be formed between copper aluminum, these compound growth speed are quickly, existence form is complicated, no matter diffusion region produces the copper/Al intermetallic of which kind of lattice types, the bond strength that all can cause composite band reduces, electric conductivity is deteriorated, and the most this transition zone should not be the thickest.Form and the distribution problem controlling interfacial layer thickness and control interface compound, is to control diffusion problem after all, controls the diffusion between copper aluminum, it is made both to have reached the purpose of metallurgical binding, keeping again its interface uniform and thin, it is achieved composite band had both maintained some strength, plasticity improves a lot again.
For thickness in the composite band of about 1.0mm, there is more significantly impact at its interface on the performance (mainly plasticity) of composite, a lot of problems of composite material interface, such as it is combined recovery and recrystallization problem of the control problem of rear interface form, the suppression problem of interface compound, interface and the relations problems of composite band structure property, matrix etc., existing heat treatment technics can not give perfect solution, make composite strip in use owing to plasticity is low, it is prone to broken belt, and causes the huge obstacle that the cold rolling composite strip of copper aluminum applies.
Summary of the invention
The various problems existed for prior art, the present invention provides copper/aluminum composite belt of a kind of plasticity height, low cost and preparation method thereof.The technical scheme is that
A kind of copper/aluminum composite belt, top layer is layers of copper, and centre is aluminium-silicon alloys layer, and bottom is aluminium lamination, and each layer thickness ratio is: 1:0.02:2；The percentage by weight of each chemical composition is: copper 62.00%, silicon 0.05%, aluminum 37.95%.
Described copper/aluminum composite belt gross thickness is 0.12-1.2mm, and its interface cohesion is metallurgical binding.
The preparation method of a kind of copper/aluminum composite belt, comprises the following steps that:
(1) using annealing furnace to make annealing treatment respectively than for the original metal band copper strips of 1:0.02:2, alusil alloy band, aluminium strip thickness, wherein the annealing temperature of copper strips is 350 ± 10 DEG C, and temperature retention time is 3-5 hour；The annealing temperature of alusil alloy band is 300 ± 10 DEG C, and temperature retention time is 2-4 hour；The annealing temperature of aluminium strip is 300 ± 10 DEG C, and temperature retention time is 2-3 hour；It is inert gas shielding；
(2) copper strips of annealed process, aluminium-silicon alloys band, aluminium strip sequentially pass through uncoiler, straightener, sanding apparatus, photoelectricity centering, composite rolling mill complete composite rolling for the first time, reduction ratio controls 70 ~ 75%, and the composite rolling band obtained employing annealing furnace is carried out intermediate annealing process；
(3) the composite rolling band processed through intermediate annealing being carried out 8 passage finish rolling, every time reduction ratio controls at 25-28%, the most finally makes annealing treatment and obtains copper/aluminum composite belt.
Described original metal band copper strips, aluminium-silicon alloys band, the thickness of aluminium strip change respectively in 0.026-26.4mm.
In described original metal band alusil alloy band, the mass percent of silicon is 11.6%.
Described intermediate annealing process condition be annealing furnace heating-up temperature be 290 ~ 370 DEG C, temperature retention time is 5 ~ 8 hours, inert gas shielding.
The condition of described last annealing be annealing furnace heating-up temperature be 500 ~ 560 DEG C, the speed of continuous annealing tape transport is 3-5m/min.
The invention have the benefit that a kind of copper/aluminum composite belt that the present invention provides and preparation method thereof, the relatively preparation of ordinary copper/aluminum composite belt can save the copper material that percent by volume is 66.7%, and owing to centre adds one layer of aluminium-silicon alloys layer, copper strips and aluminium strip is effectively inhibited directly to act on formation intermetallic compound, and the plasticity of this copper/aluminum composite belt is higher, thickness is that the composite band of 0.12-1.2mm is on the basis of the layers of copper and aluminium lamination ensureing copper/aluminum composite belt is perfect recrystallization degree, its interface shear strength is 92 ~ 122MPa, composite band yield strength is 78 ~ 82MPa, tensile strength is 84 ~ 111MPa, percentage elongation is 4.5 ~ 5.8%.
Accompanying drawing explanation
Fig. 1 is Rolling compund schematic diagram, and in accompanying drawing, 1 is aluminium strip, and 2 is aluminium-silicon alloys band, and 3 is copper strips, and 4 is copper/aluminum composite belt；
Fig. 2 be the thickness of the present invention be the Electronic Speculum contrast photo of the copper/aluminum composite belt of 0.12mm and ordinary copper/aluminum composite belt cross-section morphology.
Detailed description of the invention
The original metal band copper strips, the aluminium strip that use in the embodiment of the present invention are commercial products；
The aluminium-silicon alloys band used in the embodiment of the present invention is self-control, Homemade method is: select the alusil alloy that mass percent is 20% and 1060 commercial-purity aluminiums of silicon, both 23.2%:76.8% mixing by mass percentage, in smelting furnace, carry out founding, be then passed through rolling, cut out the aluminium-silicon alloys band that mass percent is 11.6% obtaining silicon；
The noble gas used in the embodiment of the present invention is argon.
Embodiment 1
Using original metal band copper strips thickness is 13.2mm, and aluminum-silicon ribbon thickness is 0.264mm, and al zone thickness is 26.4mm, and preparation method is as follows:
(1) using annealing furnace to make annealing treatment respectively than for the original metal band copper strips of 1:0.02:2, alusil alloy band, aluminium strip thickness, wherein the annealing temperature of copper strips is 350 ± 10 DEG C, and temperature retention time is 3-5 hour；The annealing temperature of alusil alloy band is 300 ± 10 DEG C, and temperature retention time is 2-4 hour；The annealing temperature of aluminium strip is 300 ± 10 DEG C, and temperature retention time is 2-3 hour；It is inert gas shielding；
(2) copper strips of annealed process, aluminium-silicon alloys band, aluminium strip sequentially pass through uncoiler, straightener, sanding apparatus, photoelectricity centering, composite rolling mill complete composite rolling for the first time; reduction ratio is 74.9%; the composite rolling band obtained employing annealing furnace is carried out intermediate annealing process; condition is: annealing furnace heating-up temperature is 350 ~ 370 DEG C; temperature retention time is 8 hours, inert gas shielding；
(3) the composite rolling band processed through intermediate annealing is carried out 8 finish rolling and obtain completed belt, every time reduction ratio controls at 25-28%, the most finally make annealing treatment, condition is: heating-up temperature is 500 ~ 560 DEG C, the speed of continuous annealing tape transport is 3-5m/min, prepares thickness copper/aluminum composite belt at 1.2mm.
The compound interface average-size of 1.2mm copper/aluminum composite belt is 23.5 μm, and shear strength is 122 MPa, layers of copper aluminium lamination perfect recrystallization, and composite band yield strength is 82 MPa, and composite band tensile strength is 111 MPa, and composite band elongation percentage is 5.8%.Table 1 is given and adds aluminum-silicon intermediate layer and the plasticity comparative result being not added with aluminum-silicon intermediate layer in 1.2mm copper/aluminum composite belt.
Table 1
Embodiment 2
Using original metal band copper strips thickness is 1.3mm, and aluminum-silicon ribbon thickness is 0.026mm, and al zone thickness is 2.6mm, and preparation method is as follows:
(1) using annealing furnace to make annealing treatment respectively than for the original metal band copper strips of 1:0.02:2, alusil alloy band, aluminium strip thickness, wherein the annealing temperature of copper strips is 350 ± 10 DEG C, and temperature retention time is 3-5 hour；The annealing temperature of alusil alloy band is 300 ± 10 DEG C, and temperature retention time is 2-4 hour；The annealing temperature of aluminium strip is 300 ± 10 DEG C, and temperature retention time is 2-3 hour；It is inert gas shielding；
(2) copper strips of annealed process, aluminium-silicon alloys band, aluminium strip sequentially pass through uncoiler, straightener, sanding apparatus, photoelectricity centering, composite rolling mill complete composite rolling for the first time; reduction ratio is 74.5%; the composite rolling band obtained employing annealing furnace is carried out intermediate annealing process; condition is: annealing furnace heating-up temperature is 290 ~ 310 DEG C; temperature retention time is 5 hours, inert gas shielding；
(3) the composite rolling band processed through intermediate annealing is carried out 8 finish rolling and obtain completed belt, every time reduction ratio controls at 25-28%, the most finally make annealing treatment, condition is: heating-up temperature is 500 ~ 560 DEG C, the speed of continuous annealing tape transport is 3-5m/min, prepares thickness copper/aluminum composite belt at 0.12mm.
The compound interface average-size of 0.12mm copper/aluminum composite belt is 2.4 μm, and shear strength is 92MPa, layers of copper aluminium lamination perfect recrystallization, and composite band yield strength is 78MPa, and composite band tensile strength is 84MPa, and composite band elongation percentage is 4.5%.
Embodiment 3
Using original metal band copper strips thickness is 6.6mm, and aluminum-silicon ribbon thickness is 0.132mm, and al zone thickness is 13.2mm, and preparation method is as follows:
(1) using annealing furnace to make annealing treatment respectively than for the original metal band copper strips of 1:0.02:2, alusil alloy band, aluminium strip thickness, wherein the annealing temperature of copper strips is 350 ± 10 DEG C, and temperature retention time is 3-5 hour；The annealing temperature of alusil alloy band is 300 ± 10 DEG C, and temperature retention time is 2-4 hour；The annealing temperature of aluminium strip is 300 ± 10 DEG C, and temperature retention time is 2-3 hour；It is inert gas shielding；
(2) copper strips of annealed process, aluminium-silicon alloys band, aluminium strip sequentially pass through uncoiler, straightener, sanding apparatus, photoelectricity centering, composite rolling mill complete composite rolling for the first time; reduction ratio is 74.9%; the composite rolling band obtained employing annealing furnace is carried out intermediate annealing process; condition is: annealing furnace heating-up temperature is 350 ~ 370 DEG C; temperature retention time is 8 hours, inert gas shielding；
(3) the composite rolling band processed through intermediate annealing is carried out 8 finish rolling and obtain completed belt, every time reduction ratio controls at 25-28%, the most finally make annealing treatment, condition is: heating-up temperature is 500 ~ 560 DEG C, the speed of continuous annealing tape transport is 3-5m/min, prepares thickness copper/aluminum composite belt at 0.6mm.
The compound interface average-size of 0.6mm copper/aluminum composite belt is 10.2 μm, and shear strength is 95MPa, layers of copper, aluminium lamination perfect recrystallization, and composite band yield strength is 80MPa, and composite band tensile strength is 90MPa, and composite band elongation percentage is 4.9%.
Claims (6)
1. the preparation method of copper/aluminum composite belt, it is characterised in that comprise the following steps that:
(1) annealing furnace is used to anneal respectively original metal band copper strips that thickness ratio is 1: 0.02: 2, alusil alloy band, aluminium strip
Processing, wherein the annealing temperature of copper strips is 350 ± 10 DEG C, and temperature retention time is 3-5 hour；The annealing temperature of alusil alloy band is
300 ± 10 DEG C, temperature retention time is 2-4 hour；The annealing temperature of aluminium strip is 300 ± 10 DEG C, and temperature retention time is 2-3 hour；All
For inert gas shielding；
(2) copper strips of annealed process, aluminium-silicon alloys band, aluminium strip are sequentially passed through uncoiler, straightener, sanding apparatus, photoelectricity
Centering, composite rolling mill complete composite rolling for the first time, and reduction ratio controls 70～75%, are used by the composite rolling band obtained and move back
Stove carries out intermediate annealing process；
(3) the composite rolling band processed through intermediate annealing being carried out 8 passage finish rolling, every time reduction ratio controls at 25-28%,
The most finally make annealing treatment and obtain copper/aluminum composite belt.
The preparation method of a kind of copper/aluminum composite belt the most according to claim 1, it is characterised in that described original metal band
Copper strips, aluminium-silicon alloys band, the thickness of aluminium strip change respectively in 0.026-26.4mm.
The preparation method of a kind of copper/aluminum composite belt the most according to claim 1, it is characterised in that described original metal band
In alusil alloy band, the mass percent of silicon is 11.6%.
The preparation method of a kind of copper/aluminum composite belt the most according to claim 1, it is characterised in that described intermediate annealing processes
Condition be annealing furnace heating-up temperature be 290～370 DEG C, temperature retention time is 5～8 hours, inert gas shielding.
The preparation method of a kind of copper/aluminum composite belt the most according to claim 1, it is characterised in that described last annealing
Condition be annealing furnace heating-up temperature be 500～560 DEG C, the speed of continuous annealing tape transport is 3-5m/min.
The preparation method of a kind of copper/aluminum composite belt the most according to claim 1, it is characterised in that the copper/aluminum prepared is multiple
The top layer of crossed belt is layers of copper, and centre is aluminium-silicon alloys layer, and bottom is aluminium lamination, and each layer thickness ratio is: 1: 0.02: 2；Each chemical composition
Percentage by weight be: copper 62.00%, silicon 0.05%, aluminum 37.95%, gross thickness is 0.12-1.2mm, and its interface cohesion is smelting
Gold combines.
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| CN106298068A (en) * | 2016-08-23 | 2017-01-04 | 汉舟四川铜铝复合科技有限公司 | A kind of Technology for Heating Processing of copper aluminum interface alloy composite bus |
| CN107971339B (en) * | 2016-10-21 | 2019-10-25 | 洛阳铜一金属材料发展有限公司 | A kind of preparation method of Copper-Aluminum compound transition connecting material |
| CN106756211A (en) * | 2016-12-30 | 2017-05-31 | 江苏七天环保科技有限公司 | A kind of electric switch composite metal product |
| CN106702206A (en) * | 2016-12-30 | 2017-05-24 | 江苏七天环保科技有限公司 | Easy-to-cut composite metal product |
| CN107557561A (en) * | 2017-08-08 | 2018-01-09 | 东莞市灿煜金属制品有限公司 | The copper material stress-removal process of appropriateness drop hardness |
| CN107696642A (en) * | 2017-10-19 | 2018-02-16 | 芜湖缆胜电缆新材料有限公司 | A kind of steel aluminium-plastic tape production technology |
| CN110757935A (en) * | 2018-07-28 | 2020-02-07 | 江苏润邦新材料集团有限公司 | Rolled aluminum-copper composite plate with high peel strength and preparation method thereof |
| CN109290371B (en) * | 2018-11-08 | 2020-09-29 | 瓯锟科技温州有限公司 | Cold rolling manufacturing method of copper-aluminum composite plate strip |
| EP3984663A1 (en) * | 2020-10-16 | 2022-04-20 | Voestalpine Precision Strip GmbH | Metal strip and method of manufacturing such a metal strip |
| CN117463782A (en) * | 2023-11-21 | 2024-01-30 | 佛山通宝精密合金股份有限公司 | Preparation method of Ti-Al-Ti multilayer layered composite material and composite material prepared by same |
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| CN101992567B (en) * | 2009-08-26 | 2013-03-27 | 比亚迪股份有限公司 | Stainless steel/aluminum composite material and preparation method thereof |
| CN102357526B (en) * | 2011-09-08 | 2013-09-18 | 东北大学 | Two-step composite rolling method for copper-aluminum-copper double-side ultrathin composite strip |
| CN103060624B (en) * | 2013-01-14 | 2014-09-24 | 洛阳铜一金属材料发展有限公司 | Aluminum substrate material of copper-aluminum composite plate strip, copper-aluminum composite plate strip and processing method of copper-aluminum composite plate strip |
| CN103934266A (en) * | 2014-04-11 | 2014-07-23 | 东北大学 | Copper/aluminum composite belt manufacturing method capable of thinning boundary layer |
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