CN106251940B - A kind of copper Nb-Al alloy busbar - Google Patents
A kind of copper Nb-Al alloy busbar Download PDFInfo
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- CN106251940B CN106251940B CN201610670561.1A CN201610670561A CN106251940B CN 106251940 B CN106251940 B CN 106251940B CN 201610670561 A CN201610670561 A CN 201610670561A CN 106251940 B CN106251940 B CN 106251940B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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Abstract
The present invention relates to a kind of new copper Nb-Al alloy busbars comprising: copper Biobium rare-earth 40%, aluminium surplus；Wherein, copper Biobium rare-earth ingredient is respectively copper Cu 99.80% -99.94%；Niobium Nb 0.0011% -0.0019%；Rare earth RE0.00030% -0.00079%；The alloy designations of the aluminium are 1070 fine aluminiums；Preparation method, comprising: step 1: copper Biobium rare-earth aluminium composite ingot is prepared using core-filled and continuously casted technique；In implementation steps 1, aluminium heating furnace is arranged in top, and lower section is arranged copper heating furnace, melts core metal aluminium in aluminium heating furnace and copper heating furnace respectively with outer layer metal copper niobium and rare earth alloy；Metal niobium is heated to 2900 DEG C and becomes to be added in copper liquid immediately when liquid be stirred using Heating Furnace；Under dummy bar effect, traction outer layer metal copper enters crystallizer, and outer layer metal forms hollow bloom in a crystallizer, while core metal molten aluminum is filled in pipe therewith, and core metal aluminium and outer layer metal metallurgy of copper is made to be combined into copper Biobium rare-earth aluminium composite ingot.
Description
The application is divisional application, the application number of original application: 2014108083623, a kind of invention and created name: composite guide
The preparation method of electricity row, the applying date: 2014-12-22.
Technical field
The present invention is a kind of compound conductive bar, is related to compound conductive bar component composition and preparation method.
Background technique
Copper-Aluminum compound is arranged using aluminium as matrix, external sheath copper.Its manufacturing method can be divided into: tube-weld cladding technique, hydrostatic extrusion
Method etc., the high quality of copper is stablized electric conductivity and this low-cost energy of aluminium, is combined as a whole with lower contact resistance by it
Novel conductor material, alternative pure copper.Copper-Aluminum compound, which is arranged, has good electric conductivity, light-weight, good mechanical property,
It is combined between firm copper aluminium, these advantages of physical imperfection is not present, and there is good ductility and reliability, process is special
Heat treatment process, there is certain plasticity, be conducive to punching, shearing, bending machining product are not cracked, do not separated.It can be with
Saving copper material is played, greatly reduces and produces mating cost, environmentally protective, the effect without any pollution.Copper-aluminum compound conductive bar, can
Dedicated for substituting copper bar, aluminium row is widely used in automating, metallurgy, high and low voltage electrical equipment, and building trade and metallurgy industry are
A kind of high-tech energy-saving product.
Summary of the invention
A kind of new copper Nb-Al alloy busbar of the invention is made by controlling compound conductive bar each component quality proportioning
It has it is more long than the longer life expectancy of general common copper clad aluminum, be more advantageous in the subsequent use of product production process manufacture；Tool
There are the characteristics such as more good conductivity, tensile strength, elongation percentage, hardness, yield strength.
Compound conductive bar of the present invention is superconduction type copper Biobium rare-earth aluminum compound conductive bar, component and mass percent
As follows: 1. bronze medal Biobium rare-earths 40%, wherein copper Biobium rare-earth ingredient is respectively as follows: copper Cu99.80% -99.94%；Niobium Nb0.0011%-
0.0019%；Rare earth RE0.00030% -0.00079%；2. aluminium 60%, the alloy designations of aluminium are 1070 fine aluminiums.
The present invention also provides a kind of preparation methods of above-mentioned compound conductive bar.
Compound conductive bar of the present invention is prepared as follows:
1. preparing copper Biobium rare-earth aluminium composite ingot using core-filled and continuously casted technique first, aluminium heating furnace, lower section setting is arranged in top
Copper heating furnace melts core metal aluminium in aluminium heating furnace and copper heating furnace respectively with outer layer metal copper niobium and rare earth alloy.
The temperature of copper heating furnace is separately added into rare earth when reaching 900 DEG C；Metal niobium is heated to using Heating Furnace
2900 DEG C become to be added in copper liquid immediately when liquid and are stirred, and when two heaters reach suitable temperature, i.e., aluminium heats
Furnace temperature reaches 668 DEG C~770 DEG C；Copper furnace temp reaches 1083 DEG C~1250 DEG C, under dummy bar effect, draws outer layer
Metallic copper enters crystallizer, and outer layer metal forms hollow bloom in a crystallizer, while core metal molten aluminum fills inlet pipe therewith
In base, core metal aluminium and outer layer metal metallurgy of copper is made to be combined into copper Biobium rare-earth aluminium composite ingot.
It is preheated 2. the copper Biobium rare-earth aluminium composite ingot that section is cut is entered in middle frequency furnace by automatic transmission system,
Make layers of copper and aluminium layer in transient heating, two kinds of metals are softened in moment.Enter next process for Copper-Aluminum compound ingot to provide
Auxiliary heating is subsequently entered and is heated in vacuum anaerobic continuous furnace to improving production efficiency, be heated to 460 DEG C~
680℃.Guarantee copper aluminium crystal lattice recombination by the heating process, it is ensured that product quality, the purpose of thermal deformation are to reduce material
Resistance of deformation improves plasticity, is conducive to the stability of subsequent roll form process.
3. under hydrogen nitrogen hybrid protection gas tool will be sent into using automatic-sealed delivery platform by the composite ingot heated
Continuous warm-rolling system is carried out in the continuous-rolling for having opposite several groups or more plain-barreled roll.Its rolling temperature is maintained at 430 DEG C~630 DEG C
Between.The speed of rolling equipment is set in: 80~150 ms/min.So that metal material is obtained compressive deformation makes composite conducting come height
Size on direction is spent to reduce, and size increases on width and length direction, to obtain required size and shape.
4. the compound conductive bar rolled, which is then entered cooling trough using driving roller-way, carries out smoothing alignment.
5. the compound conductive bar being straightened is entered cooling bed progress scale sawing.
6. the compound conductive bar that length saw is cut is entered eddy current inspection using driving roller-way to carry out non-destructive testing.
7. the compound conductive bar that will test carries out continuous online annealing using driving roller-way.
8. the compound conductive bar annealed is carried out surface passivating treatment using driving roller-way.
It is packed and stored 9. the compound conductive bar being passivated is entered on finished product packing machine using driving roller-way.
Compare common copper clad aluminum wire with compound conductive bar prepared by preparation method through said ratio has obviously in performance
Advantage.
Common copper clad aluminum wire is compared with compound conductive bar prepared by preparation method through said ratio, accounts for section face in layers of copper
When product is than for 15%, the two density is identical, and dc resistivity at 20 DEG C, common copper clad aluminum wire is 0.02517 Ω ㎜ 2/m,
The compound conductive bar prepared through said ratio and preparation method is 0.02089 Ω ㎜ 2/m, common copper clad aluminum wire and through above-mentioned
It matches the compound conductive bar prepared with preparation method to compare, the conductivity of the two is respectively 67.50%, 89.90%, the extension of the two
Rate is respectively 27%, 29%；The tensile strength of the two is respectively 97MPa, and the interface cohesion shear strength of 112MPa, the two are respectively
34.6MPa 55.6MPa.
Common copper clad aluminum wire is compared with compound conductive bar prepared by preparation method through said ratio, accounts for section face in layers of copper
When product is than for 20%, the two density is identical, and the common copper clad aluminum wire of dc resistivity is 0.02392 Ω ㎜ 2/m, warp at 20 DEG C
Said ratio and the compound conductive bar of preparation method preparation are 0.01926 Ω ㎜ 2/m；Common copper clad aluminum wire and match through above-mentioned
Than comparing with compound conductive bar prepared by preparation method, the conductivity of the two is respectively 66.30%, 90.07%, the elongation percentage of the two
Respectively 31%, 33%；The tensile strength of the two is respectively 105MPa, and the interface cohesion shear strength of 124MPa, the two are respectively
55.6MPa 59.8MPa.
According to above-mentioned data it could be assumed that each performance of the compound conductive bar prepared through said ratio and preparation method
It is superior to common copper clad aluminum wire, is reduced than common copper-clad row very much, to increase conduction especially in terms of dc resistivity
Rate.The composite conducting comes on interface binding power, and bond strength is more preferable.Its corrosion resistance, hardness aspect are reinforced.It is above-mentioned
Composite conducting comes high temperature resistant, and cold-resistant aspect obtains sufficient embodiment, strong more than common copper clad aluminum wire.
Compound conductive bar of the present invention has the following advantages and outstanding effects: 1, good electric conductivity: the present invention
The compound conductive bar current-carrying capacity is the 90.7% of pure copper, i.e. sectional area increase by 10% or so can be fully achieved identical as fine copper
Current-carrying capacity, electrical property are met the requirements.2, light-weight: the density of compound conductive bar of the present invention is only the 37%- of pure copper
40%, the length (volume) of equivalent weight is 2-2.25 times of pure copper.It can reduce caused by own wt when installing and using
Bending stress, it is easy for installation.
3, good mechanical property: there is good tensile strength (being more than or equal to 110MPa), flexible and elongation percentage
(being more than or equal to 30%).
4, it combines between firm copper aluminium: it is brilliant to reach permanent atom between different metal material in various environment temperatures
Between combine, and layers of copper is evenly distributed, and any physical imperfection is not present.
5, good ductility and reliability: passing through special heat treatment process, has certain plasticity, is conducive to rush
Hole, shearing, bending machining product are not cracked, are not separated.
6, for current-carrying capacity close to copper bar, bending property is better than copper bar, and tensile strength, elongation percentage, hardness can all meet
The requirement of the products such as assembled electric equipment.It will be greatly reduced assembled electric equipment etc. using compound conductive bar substitution copper bar
The cost of product, is easily promoted the use of.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings of the specification:
Fig. 1 is core-filled and continuously casted process principle figure of the invention.
Dummy bar 1, crystallizer 2, aluminium heating furnace 3, copper heating furnace 4, copper liquid inlet 5, molten aluminum inlet 6, composite billet 7,
Molten aluminum diversion pipe 8, power supply 9, temperature-controlling system 10.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of compound conductive bar preparation steps:
1) copper Biobium rare-earth aluminium composite ingot is prepared using core-filled and continuously casted technique, aluminium heating furnace 3 is arranged in top, and lower section setting copper adds
Hot stove 4 melts core metal aluminium in aluminium heating furnace 3 and copper heating furnace 4 respectively with outer layer metal copper niobium and rare earth alloy；
2) rare earth RE is separately added into when the temperature of copper heating furnace 4 reaches 900 DEG C；Metal niobium is heated to using Heating Furnace
2900 DEG C become to be added in copper liquid immediately when liquid and are stirred, and final 3 temperature of aluminium heating furnace reaches 668 DEG C~770 DEG C；Copper adds
4 temperature of hot stove reaches 1083 DEG C~1250 DEG C, and under the effect of dummy bar 1, traction outer layer metal copper enters crystallizer 2, outer layer gold
Category forms hollow bloom in crystallizer 2, while core metal molten aluminum is filled in pipe therewith, makes core metal aluminium and outer layer
Metallic copper metallurgical bonding is at copper Biobium rare-earth aluminium composite ingot；
3) the copper Biobium rare-earth aluminium composite ingot that section is cut is entered in middle frequency furnace by automatic transmission system and is preheated,
Make layers of copper and aluminium layer in transient heating, two kinds of metals are softened in moment；Subsequently enter in vacuum anaerobic continuous furnace into
Row heating, is heated to 460 DEG C~680 DEG C；
4) under hydrogen nitrogen hybrid protection gas, tool will be sent into using automatic-sealed delivery platform by the composite ingot heated
Continuous warm-rolling system is carried out in the continuous-rolling for having opposite several groups or more plain-barreled roll, rolling temperature is maintained at 430 DEG C~630 DEG C
Between；The speed of rolling equipment is set in 80-150 ms/min；
5) compound conductive bar rolled is then entered into cooling trough using driving roller-way and carries out smoothing alignment；
6) compound conductive bar being straightened is entered into cooling bed progress scale sawing；
7) compound conductive bar that length saw is cut is entered eddy current inspection using driving roller-way to carry out non-destructive testing；
8) compound conductive bar that will test carries out continuous online annealing using driving roller-way；
9) compound conductive bar annealed is subjected to surface passivating treatment using driving roller-way；
10) compound conductive bar being passivated is entered on finished product packing machine using driving roller-way and is packed and stored.
Embodiment 2:
The compound conductive bar of the present embodiment comprising each component and its mass percent are as follows: copper Biobium rare-earth 40%, wherein
Copper Biobium rare-earth ingredient is respectively copper Cu99.82%；Niobium Nb0.0012%；Rare earth RE0.00060%；2. aluminium 60%.The alloy designations of aluminium
For 1070 fine aluminiums.
Through detecting, dc resistivity is 0.01988 Ω ㎜ 2/m at 20 DEG C of above-mentioned compound conductive bar, and current-carrying capacity is fine copper
The 90.1% of row, density are the 37.5% of pure copper, and the length (volume) of equivalent weight is 2.23 times of pure copper, tensile strength
112MPa, interface cohesion shear strength 55.9MPa, elongation percentage 30%.
Embodiment 3: the compound conductive bar of the present embodiment comprising each component and its mass percent are as follows: copper Biobium rare-earth
40%, wherein copper Biobium rare-earth ingredient is respectively copper Cu99.93%；Niobium Nb0.0018%；Rare earth RE0.00075%；2. aluminium 60%.Aluminium
Alloy designations are 1070 fine aluminiums.
Through detecting, dc resistivity is 0.02008 Ω ㎜ 2/m at 20 DEG C of above-mentioned compound conductive bar.Current-carrying capacity is fine copper
The 90.8% of row, density are the 39% of pure copper, and the length (volume) of equivalent weight is 2.21 times of pure copper, tensile strength
118MPa, interface cohesion shear strength 56.2MPa, elongation percentage 32%.
Embodiment 4: the compound conductive bar of the present embodiment comprising each component and its mass percent are as follows: copper Biobium rare-earth
40%, wherein copper Biobium rare-earth ingredient is respectively copper Cu99.88%；Niobium Nb0.0015%；Rare earth RE0.00060%；2. aluminium 60%.Aluminium
Alloy designations are 1070 fine aluminiums.
Through detecting, dc resistivity is 0.02100 Ω ㎜ 2/m at 20 DEG C of above-mentioned compound conductive bar, and current-carrying capacity is fine copper
The 90.6% of row, density are the 39% of pure copper, and the length (volume) of equivalent weight is 2.22 times of pure copper, tensile strength
123MPa, interface cohesion shear strength 58.6MPa, elongation percentage 35%.
Embodiment 5: the compound conductive bar of the present embodiment comprising each component and its mass percent are as follows: copper Biobium rare-earth
40%, wherein copper Biobium rare-earth ingredient is respectively copper Cu99.84%；Niobium Nb0.0017%；Rare earth RE0.00069%；2. aluminium 60%.Aluminium
Alloy designations are 1070 fine aluminiums.
Through detecting, dc resistivity is 0.02036 Ω ㎜ 2/m at 20 DEG C of above-mentioned compound conductive bar, and current-carrying capacity is fine copper
The 90.7% of row, density are the 37% of pure copper, and the length (volume) of equivalent weight is 2.25 times of pure copper, tensile strength
120MPa, interface cohesion shear strength 57.2MPa, elongation percentage 33%.
Claims (1)
1. a kind of copper Nb-Al alloy busbar, which is characterized in that its each component for including and its mass percent: copper Biobium rare-earth
40%, aluminium surplus；
Wherein, copper Biobium rare-earth ingredient is respectively copper Cu99.80% -99.94%；Niobium Nb0.0011% -0.0019%；Rare earth
RE0.00030%—0.00079%；The alloy designations of the aluminium are 1070 fine aluminiums；
The preparation method of the busbar, comprising:
Step 1: copper Biobium rare-earth aluminium composite ingot is prepared using core-filled and continuously casted technique；
In implementation steps 1, aluminium heating furnace is arranged in top, and lower section is arranged copper heating furnace, makes core metal aluminium and outer layer metal copper
Niobium and rare earth alloy melts in aluminium heating furnace and copper heating furnace respectively；
Wherein, rare earth RE is added when reaching 900 DEG C for the temperature of copper heating furnace；Metal niobium is heated to 2900 using Heating Furnace
DEG C become to be added in copper liquid immediately when liquid and be stirred, meanwhile, so that aluminium furnace temp is reached 668 DEG C~770 DEG C, copper
Furnace temp reaches 1083 DEG C~1250 DEG C；Under dummy bar effect, traction outer layer metal copper niobium and rare earth alloy enters crystallization
Device, outer layer metal copper niobium and rare earth alloy forms hollow bloom in a crystallizer, while core metal molten aluminum is filled in pipe therewith
In, so that core metal aluminium and outer layer metal metallurgy of copper is combined into copper Biobium rare-earth aluminium composite ingot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610670561.1A CN106251940B (en) | 2014-12-22 | 2014-12-22 | A kind of copper Nb-Al alloy busbar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410808362.3A CN104409136B (en) | 2014-12-22 | 2014-12-22 | A kind of preparation method of compound conductive bar |
| CN201610670561.1A CN106251940B (en) | 2014-12-22 | 2014-12-22 | A kind of copper Nb-Al alloy busbar |
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| CN201410808362.3A Division CN104409136B (en) | 2014-12-22 | 2014-12-22 | A kind of preparation method of compound conductive bar |
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| CN201410808362.3A Active CN104409136B (en) | 2014-12-22 | 2014-12-22 | A kind of preparation method of compound conductive bar |
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| CN111515617A (en) * | 2020-03-24 | 2020-08-11 | 葫芦岛华扬电力复合新材料有限公司 | Production method of square grounding block of medium-low speed maglev train |
| CN111489852A (en) * | 2020-05-09 | 2020-08-04 | 东莞市营特电子科技有限公司 | Copper-clad aluminum wire with good extensibility and manufacturing process thereof |
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|---|---|---|---|---|
| JPH02114404A (en) * | 1988-10-25 | 1990-04-26 | Sumitomo Electric Ind Ltd | Thin cu alloy wire for electric/electronic apparatus |
| CN101441909A (en) * | 2007-11-20 | 2009-05-27 | 杨国栋 | Method for manufacturing cuprum alclad rectangular bus bar |
| CN101645333A (en) * | 2008-08-05 | 2010-02-10 | 北京有色金属研究总院 | Rolling method for producing copper clad aluminum row |
| CN102034563A (en) * | 2010-11-10 | 2011-04-27 | 福州市广福有色金属制品有限公司 | Copper bus bar with high strength, high conductivity and high toughness and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4134279B1 (en) * | 2007-07-27 | 2008-08-20 | 株式会社マテリアルソルーション | Cu alloy material |
| CN101261888B (en) * | 2008-04-09 | 2011-10-05 | 宁波博威麦特莱科技有限公司 | Recombination line |
| CN102303216B (en) * | 2011-08-26 | 2014-12-10 | 孙华桥 | Method for producing copper-clad aluminum bar |
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2014
- 2014-12-22 CN CN201610670561.1A patent/CN106251940B/en active Active
- 2014-12-22 CN CN201410808362.3A patent/CN104409136B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02114404A (en) * | 1988-10-25 | 1990-04-26 | Sumitomo Electric Ind Ltd | Thin cu alloy wire for electric/electronic apparatus |
| CN101441909A (en) * | 2007-11-20 | 2009-05-27 | 杨国栋 | Method for manufacturing cuprum alclad rectangular bus bar |
| CN101645333A (en) * | 2008-08-05 | 2010-02-10 | 北京有色金属研究总院 | Rolling method for producing copper clad aluminum row |
| CN102034563A (en) * | 2010-11-10 | 2011-04-27 | 福州市广福有色金属制品有限公司 | Copper bus bar with high strength, high conductivity and high toughness and preparation method thereof |
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| Publication number | Publication date |
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| CN106251940A (en) | 2016-12-21 |
| CN104409136A (en) | 2015-03-11 |
| CN104409136B (en) | 2016-09-07 |
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