CN105369077A - Aluminum alloy conductor material and preparation method thereof - Google Patents

Aluminum alloy conductor material and preparation method thereof Download PDF

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Publication number
CN105369077A
CN105369077A CN201510843694.XA CN201510843694A CN105369077A CN 105369077 A CN105369077 A CN 105369077A CN 201510843694 A CN201510843694 A CN 201510843694A CN 105369077 A CN105369077 A CN 105369077A
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Prior art keywords
alloy
aluminum
alloy conductor
aluminium
conductor
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CN105369077B (en
Inventor
李翔光
于丹
俞开升
敖四海
谢懿
陈春喜
陈寅
王昌明
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/06Making alloys with the use of special agents for refining or deoxidising
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023Alloys based on aluminium

Abstract

The invention belongs to the technical field of aluminum alloy production, and particularly relates to an aluminum alloy conductor material and a preparation method thereof. The aluminum alloy conductor material is composed of, by weight, 0.06-0.1% of silicon, 0.4-0.6% of iron, 0.15-0.3% of copper, 0.01-0.03% of magnesium, 0.01-0.03% of zinc, 0.02-0.03% of boron, 0.03-0.05% of gallium, 0.08-0.13% of rare-earth metal, 0.05-0.08% of inevitable impurities and the balance aluminum. According to the method, by controlling the annealing temperature, the temperature decrease rate and the cold and hot rolling processes, the negative influence of the stress effect on conductor structures is reduced through the material compositions, and therefore the strength, the electric conductivity, the heat resistance, the flex fatigue resistance, the corrosion resistance and the creep resistance of aluminum alloy conductors are improved.

Description

A kind of aluminum-alloy conductor material and preparation method thereof
Technical field
The invention belongs to aluminium alloy production technical field, be specifically related to a kind of aluminum-alloy conductor material and preparation method thereof.
Background technology
Nowadays, along with the quick growth of Electricity Demand, the requirement of electric power energy in transmitting procedure is also increased day by day, it is far away that the transmitting line of high-quality should possess transmission distance, transmitting capacity is large, lower than the strong feature of natural disaster ability, then along with the raising of demand, from specific conductivity, thermotolerance, anti-sag characteristic, the functional requirement of high-quality is proposed to transmission line further.
At present, the aluminium conductor material manufactured by conventional aluminium, its conductivity and resistance toheat are performed poor, and normal appearance broken string phenomenon in production process, and then add production cost and the use cost of aluminum-alloy conductor material.Adopt aluminium conductor material prepared by remelting aluminium ingot, containing impurity such as iron, silicon, copper in remelting aluminium ingot, utilize the impurity such as iron, silicon, copper, be conducive to realizing alloy strengthening, but these yuan usually form solid strengthening, be difficult to form small and dispersed strengthening, and and then cause the intensity of aluminum-alloy conductor material to rise electroconductibility declines, flexibility declines, and then reduce flex endurant fatigue characteristic, and then make fine aluminium based material cannot bear stress in bending repeatedly.
Summary of the invention
The present invention for solving the problems of the technologies described above, the aluminium alloy conductor providing a kind of conductivity excellent and the preparation method that technique is simple, security is high thereof.
Be achieved especially by following scheme:
A kind of aluminum-alloy conductor material, this aluminium alloy by weight percentage, its composition is: silicon 0.06-0.1wt%, iron 0.4-0.6wt%, copper 0.15-0.3wt%, magnesium 0.01-0.03wt%, zinc 0.01-0.03wt%, boron 0.02-0.03wt%, gallium 0.03-0.05wt%, rare earth metal 0.08-0.13wt%, and all the other are aluminium and inevitable impurity.
Further, this aluminium alloy by weight percentage, its composition is: silicon 0.08wt%, iron 0.5wt%, copper 0.23wt%, magnesium 0.02wt%, zinc 0.02wt%, boron 0.025wt%, gallium 0.04wt%, rare earth metal 0.1wt%, and all the other are aluminium and inevitable impurity.
Further, described rare earth metal comprises one of scandium, samarium, erbium, yttrium, lanthanum, cerium or two kinds.
Further, described inevitable total impurities is 0.05-0.08wt%.
Its preparation method, comprises the following steps:
(1) technical pure aluminium ingot is got, the master alloy of iron, magnesium, silicon, technical pure aluminium ingot is melted, in melt, adds ferroaluminium, Aludur, in 770-780 DEG C of insulation, after centre is melted completely, alloy molten solution temperature is reduced to 560-600 DEG C, then add copper, zinc, boron, gallium, rare earth element master alloy carry out insulation 1-2h, carry after refining agent carries out refining to melt with nitrogen by furnace bottom, through casting, obtain ingot casting;
(2) ingot casting being carried out cutting milling face, hot rolling at temperature is 480-500 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 1-3h at 330-360 DEG C, obtains aluminum-alloy conductor material.
Described cooling, its speed is 5-7 DEG C/min.
Described pouring temperature is 710-740 DEG C.
Described refining agent by mass percent be the sodium-chlor of 5-15%, 5-15% Repone K and, the Na of 70-90% 3alF 6composition.
Beneficial effect of the present invention
Iron level is the invention enables to be 0.4-0.6wt%, all the other contain ferrous components with the form crystallization of the metallic compound such as Al-Fe, Al-Fe-Si, Al-Fe-Si ,-Mg or precipitation, this crystallisate or precipitate as crystal grain miniaturization material and play a role, make intensity and flex endurant fatigue characteristic improve simultaneously, make the solid solution of part iron simultaneously, and promote intensity.
The invention enables Mg content to be 0.01-0.03wt% and silicone content is 0.06-0.1wt%, and all the other form precipitate mutually containing magnesium component and siliceous composition, and improve alloy strength, resistance toheat.
The invention enables copper content to be 0.15-0.3wt%, make its solid solution and aluminium alloy is strengthened on the one hand, on the other hand, contribute to improving alloy creep resistant and thermostability.
The invention enables gallium content to be 0.03-0.05wt%, make its solid solution and aluminium alloy is strengthened on the one hand, on the other hand, contribute to improving alloy thermotolerance and erosion resistance.
The invention enables Zn content to be 0.01-0.03wt%, make its solid solution and aluminium alloy is strengthened on the one hand, on the other hand, contribute to improving alloy corrosion resistance and thermostability.
Middle-weight rare earths metal of the present invention can reduce the content of silicon in aluminium sosoloid, thus reduces the impacts on aluminium alloy electric conductivity such as iron, silicon, gallium, improves the weave construction of crystal in aluminum alloy materials simultaneously, improves processing characteristics and the corrosion resistance nature of aluminium alloy.
In the present invention, boron can react with the impurity element such as Ti, V, Mn, Cr, is conducive to the discharge of impurity, thus reduces impurity to the impact of aluminium alloy electric conductivity, is conducive to the unfavorable development improving alloy flexibility.
The inventive method, by controlling annealing temperature, rate of temperature fall and cold and hot roll process thereof, improves the disadvantageous effect of stress to conductor tissue, the performance of aluminium alloy conductor is improved, wherein, tensile strength is about 175MPa, and electric conductivity is about 63%IACS, and heat resisting temperature is about 230 DEG C.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
Get the fusing of technical pure aluminium ingot, ferroaluminium, Aludur is added in melt, in 770 DEG C of insulations, after centre is melted completely, alloy molten solution temperature is cooled to 590 DEG C with the speed of 5 DEG C/min, then add copper, zinc, boron, gallium, lanthanum master alloy carry out insulation 1h, with nitrogen by furnace bottom carry successively 5% sodium-chlor, 5% Repone K and, the Na of 90% 3alF 6after the refining agent formed carries out refining, cast at temperature is 740 DEG C, obtain ingot casting; Ingot casting being carried out cutting milling face, hot rolling at temperature is 495 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 1.5h at 348 DEG C, obtains aluminum-alloy conductor material.
This material composition is analyzed, the weight percent of each element is: silicon 0.1wt%, iron 0.4wt%, copper 0.2wt%, magnesium 0.02wt%, zinc 0.03wt%, boron 0.02wt%, gallium 0.05wt%, rare earth metal 0.08-0.13wt%, inevitable total impurities are 0.08wt%, and all the other are aluminium.
Embodiment 2
Get the fusing of technical pure aluminium ingot, ferroaluminium, Aludur is added in melt, in 772 DEG C of insulations, after centre is melted completely, alloy molten solution temperature is cooled to 570 DEG C with the speed of 7 DEG C/min, then add copper, zinc, boron, gallium, being mishmetal with scandium, samarium, master alloy carry out insulation 1h, with nitrogen by furnace bottom carry successively 8% sodium-chlor, 5% Repone K and, the Na of 87% 3alF 6after the refining agent formed carries out refining, cast at temperature is 735 DEG C, obtain ingot casting; Ingot casting being carried out cutting milling face, hot rolling at temperature is 480 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 2.5h at 330 DEG C, obtains aluminum-alloy conductor material.
This material composition is analyzed, the weight percent of each element is: silicon 0.07wt%, iron 0.6wt%, copper 0.26wt%, magnesium 0.01wt%, zinc 0.01wt%, boron 0.028wt%, gallium 0.05wt%, rare earth metal 0.08-0.13wt%, inevitable total impurities are 0.06wt%, and all the other are aluminium.
Embodiment 3
Get the fusing of technical pure aluminium ingot, ferroaluminium, Aludur is added in melt, in 780 DEG C of insulations, after centre is melted completely, alloy molten solution temperature is cooled to 600 DEG C with the speed of 5 DEG C/min, then add copper, zinc, boron, gallium, being mishmetal with erbium, lanthanum, master alloy carry out insulation 2h, with nitrogen by furnace bottom carry successively 10% sodium-chlor, 10% Repone K and, the Na of 80% 3alF 6after the refining agent formed carries out refining, cast at temperature is 725 DEG C, obtain ingot casting; Ingot casting being carried out cutting milling face, hot rolling at temperature is 486 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 2h at 355 DEG C, obtains aluminum-alloy conductor material.
This material composition is analyzed, the weight percent of each element is: silicon 0.08wt%, iron 0.5wt%, copper 0.23wt%, magnesium 0.02wt%, zinc 0.02wt%, boron 0.025wt%, gallium 0.04wt%, rare earth metal 0.1wt%, inevitable total impurities are 0.07wt%, and all the other are aluminium.
Embodiment 4
Get the fusing of technical pure aluminium ingot, ferroaluminium, Aludur is added in melt, in 776 DEG C of insulations, after centre is melted completely, alloy molten solution temperature is cooled to 580 DEG C with the speed of 6 DEG C/min, then add copper, zinc, boron, gallium, yttrium master alloy carry out insulation 1.5h, with nitrogen by furnace bottom carry successively 15% sodium-chlor, 5% Repone K and, the Na of 80% 3alF 6after the refining agent formed carries out refining, cast at temperature is 710 DEG C, obtain ingot casting; Ingot casting being carried out cutting milling face, hot rolling at temperature is 500 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 3h at 360 DEG C, obtains aluminum-alloy conductor material.
This material composition is analyzed, the weight percent of each element is: silicon 0.06wt%, iron 0.58wt%, copper 0.3wt%, magnesium 0.01wt%, zinc 0.01wt%, boron 0.02wt%, gallium 0.03wt%, rare earth metal 0.08-0.13wt%, inevitable total impurities are 0.05wt%, and all the other are aluminium.
Embodiment 5
Get the fusing of technical pure aluminium ingot, ferroaluminium, Aludur is added in melt, in 778 DEG C of insulations, after centre is melted completely, alloy molten solution temperature is cooled to 560 DEG C with the speed of 7 DEG C/min, then add copper, zinc, boron, gallium, being mishmetal with samarium, cerium, master alloy carry out insulation 1.8h, with nitrogen by furnace bottom carry successively 5% sodium-chlor, 10% Repone K and 85% Na 3alF 6after the refining agent formed carries out refining, cast at temperature is 724 DEG C, obtain ingot casting; Ingot casting being carried out cutting milling face, hot rolling at temperature is 489 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 1h at 340 DEG C, obtains aluminum-alloy conductor material.
This material composition is analyzed, the weight percent of each element is: silicon 0.08wt%, iron 0.49wt%, copper 0.18wt%, magnesium 0.03wt%, zinc 0.03wt%, boron 0.021wt%, gallium 0.04wt%, rare earth metal 0.08-0.13wt%, inevitable total impurities are 0.07wt%, and all the other are aluminium.
Test example 1
The aluminum-alloy conductor material prepared by embodiment 1-5 carries out tensile tests at room, standard tensile specimen is made according to GB GB/T228-2002, be 0.5mm/min at draw speed, Instron 30KN tension testing machine stretches, measurement length is 50mm, measure tensile strength, unit elongation, its result is as shown in table 1:
Table 1
Sample Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Tensile strength (MPa) 168 178 181 175 171
Unit elongation (%) 17 19 21 18 17
Test example 2
The aluminum-alloy conductor material prepared by embodiment 1-5 carries out electric conductivity experiment, and detect according to GB GB/T12966-2008 " aluminium alloy electric conductance I stay testing method ", its result is as shown in table 2:
Table 2
Sample Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Electric conductivity (%IACS) 60 67 64 63 62
Test example 3
The aluminum-alloy conductor material prepared by embodiment 1-5 carries out resistance toheat test, and respectively with tensile strength and the ratio of tensile strength not being incubated sample of 230 DEG C of insulations, 200 hours, the 250 DEG C insulations sample of 2 hours, its result is as shown in table 3:
Table 3
Sample Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
230 DEG C of thermotolerance % 95.1 94.6 95.5 94.1 94.7
250 DEG C of thermotolerance % 94.8 95.0 94.9 93.2 93.9

Claims (8)

1. an aluminum-alloy conductor material, it is characterized in that, this aluminium alloy by weight percentage, its composition is: silicon 0.06-0.1wt%, iron 0.4-0.6wt%, copper 0.15-0.3wt%, magnesium 0.01-0.03wt%, zinc 0.01-0.03wt%, boron 0.02-0.03wt%, gallium 0.03-0.05wt%, rare earth metal 0.08-0.13wt%, and all the other are aluminium and inevitable impurity.
2. aluminum-alloy conductor material as claimed in claim 1, it is characterized in that, this aluminium alloy by weight percentage, its composition is: silicon 0.08wt%, iron 0.5wt%, copper 0.23wt%, magnesium 0.02wt%, zinc 0.02wt%, boron 0.025wt%, gallium 0.04wt%, rare earth metal 0.1wt%, and all the other are aluminium and inevitable impurity.
3. aluminum-alloy conductor material as claimed in claim 1 or 2, it is characterized in that, described rare earth metal comprises one of scandium, samarium, erbium, yttrium, lanthanum, cerium or two kinds.
4. aluminum-alloy conductor material as claimed in claim 1 or 2, it is characterized in that, described inevitable total impurities is 0.05-0.08wt%.
5. the preparation method of aluminum-alloy conductor material as claimed in claim 1 or 2, is characterized in that, comprise the following steps:
(1) technical pure aluminium ingot is got, the master alloy of iron, magnesium, silicon, technical pure aluminium ingot is melted, in melt, adds ferroaluminium, Aludur, in 770-780 DEG C of insulation, after centre is melted completely, alloy molten solution temperature is reduced to 560-600 DEG C, then add copper, zinc, boron, gallium, rare earth element master alloy carry out insulation 1-2h, carry after refining agent carries out refining to melt with nitrogen by furnace bottom, through casting, obtain ingot casting;
(2) ingot casting being carried out cutting milling face, hot rolling at temperature is 480-500 DEG C, is then 280 DEG C through being cold-rolled to outlet mass temperatures, then to be placed in temperature be anneal 1-3h at 330-360 DEG C, obtains aluminum-alloy conductor material.
6. the preparation method of aluminum-alloy conductor material as claimed in claim 5, it is characterized in that, described cooling, its speed is 5-7 DEG C/min.
7. the preparation method of aluminum-alloy conductor material as claimed in claim 5, it is characterized in that, described pouring temperature is 710-740 DEG C.
8. the preparation method of aluminum-alloy conductor material as claimed in claim 5, is characterized in that, described refining agent by mass percent be the sodium-chlor of 5-15%, 5-15% Repone K and, the Na of 70-90% 3alF 6composition.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106636780A (en) * 2017-01-06 2017-05-10 吴振江 Superfine aluminum alloy conductor and preparation method thereof
CN106893899A (en) * 2017-03-27 2017-06-27 河北欣意电缆有限公司 A kind of built on stilts heat resistant aluminum alloy conductor material and preparation method thereof
CN109234580A (en) * 2018-08-03 2019-01-18 特变电工山东鲁能泰山电缆有限公司 A kind of high-strength conductive rate aluminium bar material and production method
US10633725B2 (en) 2015-10-14 2020-04-28 NaneAL LLC Aluminum-iron-zirconium alloys

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112997A1 (en) * 2017-12-07 2019-06-13 NanoAL LLC 8000-series aluminum alloy

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CN102978471A (en) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Ga-RE aluminum alloy, and preparation method and power cable thereof
CN103177786A (en) * 2011-12-22 2013-06-26 加铝(天津)铝合金产品有限公司 Aluminum alloy material for cables
CN105088035A (en) * 2015-07-30 2015-11-25 中南大学 High-conductivity moderate-strength non-thermal processing type aluminum alloy conductor material and manufacturing method

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Publication number Priority date Publication date Assignee Title
JP2007308805A (en) * 2002-05-07 2007-11-29 Nippon Foil Mfg Co Ltd Aluminum alloy foil and its manufacturing method
CN103177786A (en) * 2011-12-22 2013-06-26 加铝(天津)铝合金产品有限公司 Aluminum alloy material for cables
CN102978471A (en) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Ga-RE aluminum alloy, and preparation method and power cable thereof
CN105088035A (en) * 2015-07-30 2015-11-25 中南大学 High-conductivity moderate-strength non-thermal processing type aluminum alloy conductor material and manufacturing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10633725B2 (en) 2015-10-14 2020-04-28 NaneAL LLC Aluminum-iron-zirconium alloys
CN106636780A (en) * 2017-01-06 2017-05-10 吴振江 Superfine aluminum alloy conductor and preparation method thereof
CN106636780B (en) * 2017-01-06 2018-04-03 吴振江 A kind of ultrafine aluminum alloy conductor and preparation method thereof
CN106893899A (en) * 2017-03-27 2017-06-27 河北欣意电缆有限公司 A kind of built on stilts heat resistant aluminum alloy conductor material and preparation method thereof
CN109234580A (en) * 2018-08-03 2019-01-18 特变电工山东鲁能泰山电缆有限公司 A kind of high-strength conductive rate aluminium bar material and production method

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