CN103680670B - Creep-resisting, corrosion-resisting aluminium alloy conductor - Google Patents
Creep-resisting, corrosion-resisting aluminium alloy conductor Download PDFInfo
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- CN103680670B CN103680670B CN201310630159.7A CN201310630159A CN103680670B CN 103680670 B CN103680670 B CN 103680670B CN 201310630159 A CN201310630159 A CN 201310630159A CN 103680670 B CN103680670 B CN 103680670B
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Abstract
The invention discloses a kind of creep-resisting, corrosion-resisting aluminium alloy conductor, include the component of following weight percentage：Si, 0.03 0.15%；Cu, 0.01 0.25%；Zr, 0.02 0.45%；Fe, 0.3 0.9%；Mg, 0.001 0.012%；B, 0.001 0.015%；Rare earth element, 0.03 0.20%；Surplus is aluminium and inevitable impurity.The conductance of the aluminum-alloy conductor material of the present invention is up to 61.9%IACS, and tensile strength is up to 126MPa, and elongation at break is up to 15.6%；With excellent electrical conductivity, flexibility, anti-corrosive properties and creep resistance.
Description
Technical field
The present invention relates to a kind of aluminum-alloy conductor material, is specifically related to the aluminium conjunction of a kind of creep resistant, anticorrosion, resistance to oxidation
Gold, it can be used for the conductor wire core for manufacturing electric wire.
Background technology
For a long time, selection of the people to low-voltage cable for building, typically based on copper.It is believed that copper conductor is in electricity
All it is higher than other conductors in gas performance and the degree of reliability, is used as being preferably selected for cable material.But copper is as tellurian one
Kind scarce resource, especially in our countries, ore reserve are extremely limited, and Copper Ores largely rely on import.Advocate energy-conserving and environment-protective,
Under the overall situation of sustainable development, cable industry doing the best always popularization with aluminium for copper, but the problem of aluminum cable is in use
It is exposed, especially aluminum conductor joint oxidation triggers a lot of fire, copper conductor electric property is stable in addition, resistance to mechanical is tired,
It is resistant to chemical etching to wait various advantages, it is being used as main material using upper just gradually become using copper.
But with science and technology development, after high quality, the aluminium of high-tech content are developed, in addition entirely
The current resources situation of the poor copper richness aluminium of ball, it has been more than 3 times of aluminium valency before copper marked price（About 5.5 ten thousand yuan/ton of copper, about 1.45 ten thousand yuan of aluminium/
Ton）, weight is 3.3 times of aluminium, turns into inevitable choice again for copper with " aluminium ".
However, presently used aluminum for electric engineering has more defect, such as contacts electricity in use as cable aluminium conductor
Resistance is big, creep be present, and binding post produces loosening, easily trigger fire through using after a while.
My company is exactly the deficiency for having overcome aluminum existing in this context, have developed a kind of structure creep resistant, resistance to
The rare earth aluminum alloy material of burn into high conduction performance.So as to obtain the novel cable conductor material that advantage is had more than common copper material.
The content of the invention
It is an object of the invention to provide a kind of creep resistant, corrosion resistant aluminum alloy conductive material, the aluminium alloy conductive material
With excellent electrical conductivity, flexibility, and it is anti-oxidant, in light weight, intensity is high, longtime running is reliable and stable.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme：
A kind of creep-resisting, corrosion-resisting aluminum-alloy conductor material, include the component of following weight percentage：
Si, 0.03-0.15%；It is the Main Ingredients and Appearance for improving mobile performance.Best stream can be obtained from eutectic to hypereutectic
Dynamic property.In addition, intensity when can improve tensile strength, hardness, machinability and high temperature.Can excessively elongation percentage be reduced.
Cu, 0.01-0.25%；Mechanical performance can improve, and machinability improves.Can excessively corrosion resistance be caused to reduce, easily hair
Slight crack between heat.
Zr, 0.02-0.45%；Recrystallization process can be hindered, refines recrystal grain.Also cast sturcture can be refined.
Fe, 0.3-0.9%；Metallic compound can be generated, forms hard spot, increases aluminium alloy creep-resistant property.Have when content is low
The not phenomenon of easy mold release；When content is high, it can cause and crack.
Mg, 0.001-0.012%；The corrosion resistance of alloy can be increased, be corrosion resistant alloy, but good weldability, corrosion stability
Might as well, and have moderate strength.Content increase, its freezing range increase, produces red brittleness, and toughness reduces.
B, 0.001-0.015%；As heterogeneous necleus during crystallization, play a part of to refine cast sturcture and seam organization.
Rare earth element ce, 0.03-0.20%；Trace rare-earth element is added in aluminium alloy, aluminium alloy can be significantly improved
Metallographic structure, crystal grain thinning, gas and objectionable impurities in aluminium alloy are removed, reduce the formation of crack of aluminium alloy, closed so as to improve aluminium
The intensity of gold, improve processing characteristics, moreover it is possible to improve the heat resistance, plasticity and malleability of aluminium alloy, improve hardness, increase intensity
And toughness.
Surplus is aluminium and inevitable impurity.
According to an embodiment of the invention, in above-mentioned aluminum-alloy conductor material, described rare earth element is lanthanide series
Middle one or more.
The present invention compared with prior art, has following beneficial effect：
The conductance of the aluminum-alloy conductor material of the present invention is stretched up to 61.9%IACS, tensile strength up to 126MPa, fracture
Long rate is up to 15.6%；With excellent electrical conductivity, flexibility, anti-corrosive properties and creep resistance.
Embodiment
With reference to embodiments of the invention, the invention will be further elaborated.
Embodiment 1：
The casting method step of aluminium alloy conductor of the present invention is as follows：
1st, dispensing
It is that basic point carries out dispensing according to following component proportion：Si, 0.03-0.15%；Cu, 0.01-0.25%；Zr,
0.02-0.45%；Fe, 0.3-0.9%；Mg, 0.001-0.012%；B, 0.001-0.015%；Rare earth element, 0.03-0.20%；It is remaining
Measure and should not exceed the scope for aluminium and inevitable impurity, dispensing.
2nd, melt
Rare earth aluminium alloy smelting temperature is controlled in the range of 700-760 DEG C, and too high temperature can aggravate the oxidation of aluminium
Journey, too low then aluminium liquid are in atherosclerotic, are not readily separated slag and impurity.Already floating on the slag of liquid level will remove in time, because
The aluminum oxide film membrane structure generated on liquid level is very fine and close, prevents from further aoxidizing, but the proportion due to aluminum oxide with
Aluminium alloy is very close, therefore it is remained in will not float liquid level in aluminium liquid automatically, need to be removed with the method for refining.
3rd, sampling and testing after electromagnetic agitation
After the completion of through the uniform rare earth aluminium alloy melting of electromagnetic agitation, taken when maintaining the temperature in the range of 720-750 DEG C
Sample, chemical composition analysis should be carried out to it using spectrometer measurement, be compared according to measurement result with dispensing percentage, depending on
Situation is adjusted, until qualified.
4th, refine
The refining of alloy is for pure aluminium alloy, and the gas for also making to contain in alloy is discharged, and reduces hidden danger, improves alloy
Purity.
4.1st, refining agent
Usually zinc chloride, carbon trichloride, chlorine, nitrogen also have manganese chloride, and titanium dioxide adds manganese chloride.
4.2nd, the usage amount of refining agent
The ratio of usual refining agent and alloy is 2~4%.
4.3rd, refining temperature
Refining temperature is usually 700 DEG C~740 DEG C and refined 10 minutes, stands 15 minutes, blows chlorine refining temperature no more than 700
DEG C, air pressure 0.1-0.2MPa.
4.4th, refining route：
Refining agent is pressed onto using bell jar and stirred away from furnace bottom 100mm or so.Nitrogen flushing blows chlorine and then uses inflating catheter.Also may be used
Employ nitrogen as carrier and refining agent injection is entered into aluminium liquid to achieve the goal.
5th, casting and rolling process controls
5.1 temperature control
5.1.1 pour alclad coolant-temperature gage：710~740 DEG C
5.1.2 enter to roll temperature：460~500 DEG C
5.1.3 finishing temperature：300℃
5.1.4 rolling emulsion temperature：50℃
The control of 5.2 casting cooling waters
Cooling water temperature is 25~30 DEG C, pressure 0.3MPa.
5.3 rolling mill speed：7.5~8.5m/s；The pressure of rolling emulsion is 0.16MPa.
Aluminium alloy conductor after testing, including following weight component very：
Si, 0.04%；
Cu, 0.04%；
Zr, 0.025%；
Fe, 0.7%；
Mg, 0.004%；
B, 0.01%；
Rare earth, 0.12%；
Surplus is aluminium and inevitable impurity.
Its conductance is 61.5%IACS after testing, tensile strength 113MPa, elongation at break 24.1%.
Embodiment 2：
According to the casting method in embodiment 1, a kind of aluminum-alloy conductor material, including following weight component very：
Si, 0.03%；
Cu, 0.01%；
Zr, 0.08%；
Fe, 0.47%；
Mg, 0.002%；
B, 0.002%；
Rare earth, 0.06%；
Surplus is aluminium and inevitable impurity.
Its conductance is 60.4%IACS after testing, tensile strength 122MPa, elongation at break 15.6%.
Embodiment 3：
According to the casting method in embodiment 1, a kind of aluminum-alloy conductor material, including following weight component very：
Si, 0.08%；
Cu, 0.15%；
Zr, 0.15%；
Fe, 0.85%；
Mg, 0.006%；
B, 0.004%；
Rare earth, 0.04%；
Surplus is aluminium and inevitable impurity；
Its conductance is 61.9%IACS after testing, tensile strength 116MPa, elongation at break 19%.
Embodiment 4：
According to the casting method in embodiment 1, a kind of aluminum-alloy conductor material, including following weight component very：
Si, 0.10%；；
Cu, 0.18%；
Zr, 0.30%；
Fe, 0.55%；
Mg, 0.006%；
B, 0.006%；
Rare earth, 0.09%；
Surplus is aluminium and inevitable impurity；
Its conductance is 61.0%IACS after testing, tensile strength 126MPa, elongation at break 18.5%.
Embodiment 5：
According to the casting method in embodiment 1, a kind of aluminum-alloy conductor material, including following weight component very：
Si, 0.05%；
Cu, 0.22%；
Zr, 0.4%；
Fe, 0.35%；
Mg, 0.009%；
B, 0.008%；
Rare earth, 0.16%；
Surplus is aluminium and inevitable impurity；
Its conductance is 61.8%IACS after testing, tensile strength 109MPa, elongation at break 20.5%.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (2)
1. a kind of creep-resisting, corrosion-resisting aluminium alloy conductor, it is characterised in that include the component of following weight percentage：
Si, 0.04%；Cu, 0.04%；Zr, 0.025%；Fe, 0.7%；Mg, 0.004%；B, 0.01%；Rare earth, 0.12%；
Surplus is aluminium and inevitable impurity；
The casting method step of aluminium alloy conductor is as follows：
(1) dispensing：It is that basic point carries out dispensing according to following component proportion：Si, 0.03-0.15%；Cu, 0.01-0.25%；
Zr, 0.02-0.45%；Fe, 0.3-0.9%；Mg, 0.001-0.012%；B, 0.001-0.015%；Rare earth element, 0.03-
0.20%；Surplus is aluminium and inevitable impurity；
(2) melt：Rare earth aluminium alloy smelting temperature is controlled in the range of 700-760 DEG C, and the slag for already floating on liquid level is timely
Remove；
(3) sampling and testing after electromagnetic agitation
After the completion of through the uniform rare earth aluminium alloy melting of electromagnetic agitation, sample, adopt when maintaining the temperature in the range of 720-750 DEG C
Chemical composition analysis is carried out to it with spectrometer measurement, is compared with dispensing percentage according to measurement result, optionally carried out
Adjustment, until qualified；
(4) refine：A, refining agent is zinc chloride, carbon trichloride, chlorine, nitrogen or manganese chloride, or titanium dioxide adds manganese chloride；
B, the usage amount of refining agent：The ratio of refining agent and alloy is 2~4%；
C, refining temperature：Refining temperature is 700 DEG C~740 DEG C and refined 10 minutes, stands 15 minutes, blows chlorine refining temperature and be no more than
700 DEG C, air pressure 0.1-0.2MPa；
D, refining route：Refining agent is pressed onto using bell jar and stirred away from furnace bottom 100mm, nitrogen flushing blows chlorine and then uses inflating catheter；
(5) casting and rolling process controls：
A, temperature control
Pour alclad coolant-temperature gage：710~740 DEG C
Enter to roll temperature：460~500 DEG C
Finishing temperature：300℃
Rolling emulsion temperature：50℃
B, the control of casting cooling water
Cooling water temperature is 25~30 DEG C, pressure 0.3MPa；
C, rolling mill speed：7.5~8.5m/s；The pressure of rolling emulsion is 0.16MPa.
2. creep-resisting, corrosion-resisting aluminium alloy conductor according to claim 1, it is characterised in that：Described rare earth element is lanthanum
It is one or more of in series elements.
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| CN104294089B (en) * | 2014-09-15 | 2018-03-16 | 林泽民 | A kind of coal mine cable Al Fe Cu Mg Zr line aluminium alloys and aluminium alloy cable |
| CN104498747A (en) * | 2014-12-25 | 2015-04-08 | 云南铝业股份有限公司 | Preparation method of Al-Zr-RE alloy round aluminum rod |
| CN105788697B (en) * | 2016-04-25 | 2018-01-19 | 陈赛飞 | A kind of high-strength high conductivity plastic cable and preparation method thereof |
| CN106702219A (en) * | 2016-11-24 | 2017-05-24 | 中色科技股份有限公司 | Creep-resistant aluminum alloy conductor and preparing method thereof for cable or cable connector |
| CN106435288A (en) * | 2016-11-29 | 2017-02-22 | 安徽双诚电线电缆有限公司 | Aluminum alloy conductor for high-strength high-conductivity automobile wires and preparation method |
| CN109192364A (en) * | 2018-08-29 | 2019-01-11 | 安庆市泽烨新材料技术推广服务有限公司 | Aluminium alloy electric cable core |
| CN111733349A (en) * | 2020-06-30 | 2020-10-02 | 安徽电气集团股份有限公司 | Aluminum alloy conductor material for wind power generation transmission cable and preparation method thereof |
| CN112259284B (en) * | 2020-12-17 | 2021-03-26 | 特变电工(德阳)电缆股份有限公司 | Aluminum alloy conductor flexible cable and preparation method thereof |
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| CN114427055A (en) * | 2022-01-26 | 2022-05-03 | 阳光电源股份有限公司 | Aluminum alloy material, conductive bar and calculation method of creep residual life of conductive bar |
| CN114807686B (en) * | 2022-06-27 | 2023-03-24 | 江苏中天科技股份有限公司 | High-strength heat-resistant aluminum alloy monofilament and production process and application thereof |
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Denomination of invention: Creep resistant and corrosion resistant aluminum alloy conductor Effective date of registration: 20211020 Granted publication date: 20171201 Pledgee: Bohai Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN XINDIAN CABLES Co.,Ltd. Registration number: Y2021510000259 |
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Date of cancellation: 20221130 Granted publication date: 20171201 Pledgee: Bohai Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN XINDIAN CABLES CO.,LTD. Registration number: Y2021510000259 |