CN104894438B - A kind of high conductivity heat-resisting aluminium alloy monofilament material and preparation method thereof - Google Patents
A kind of high conductivity heat-resisting aluminium alloy monofilament material and preparation method thereof Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 101
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000004411 aluminium Substances 0.000 claims abstract description 48
- 239000000956 alloy Substances 0.000 claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 238000005491 wire drawing Methods 0.000 claims abstract description 17
- 229910052718 tin Inorganic materials 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000007670 refining Methods 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 8
- 241001417490 Sillaginidae Species 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910018580 Al—Zr Inorganic materials 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000004020 conductor Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910007948 ZrB2 Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910018191 Al—Fe—Si Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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Abstract
A kind of high conductivity heat-resisting aluminium alloy monofilament material of present invention offer and preparation method thereof, alloy provided by the invention is made of following raw material by mass percentage：B 0.002~0.03%, Sn 0.02~0.10%, Zr0.018~0.030%, Si 0.001~0.06%, Fe 0.001~0.15%, (V+Ti+Cr+Mn)≤0.01%, surplus are aluminium.Aluminium alloy monofilament provided by the invention through smelting, refining, cast, bar processed and be made the step of wire drawing.Conductivity >=61.2%IACS of heat-resisting aluminium alloy monofilament material obtained, tensile strength >=165MPa, elongation percentage ＞ 2.0%, heat resisting temperature >=150 DEG C, intensity remnants rates are more than 90% after 1h is heated at 230 DEG C.
Description
Technical field
The invention belongs to power industry transmission line of electricity aerial condutor technical fields, and in particular to a kind of high conductivity alumite
Alloy filaments material and preparation method thereof.
Background technology
Heat-resistant aluminum alloy wire has the characteristics such as low arc drop, increase-volume, can be under the premise of avoiding replacing shaft tower into row line
Transformation, running temperature can be promoted to 120 DEG C or more, and current-carrying capacity improves 40% or more, be especially suitable for newly-built large capacity transmission circuit
And the capacity-increasing transformation of the old circuit in resident compact district.The heat-resistant aluminium alloy material that heat-resistant aluminum alloy wire uses, at 20 DEG C
Conductivity≤60%IACS (International Annealing Copper Standard, International Annealed Copper Standard), transmission of electricity
Line loss is higher, and while manufacturing mostly uses greatly the higher electrician's aluminum feedstock of purity, in addition it is general also need to add expensive Er, Y,
The rare earth elements such as Sc carry out microalloying modification, and production and application cost is higher, also constrain its extensive hair to a certain extent
Exhibition and application.
Since Harringtond in 1949 adds Zr raising aluminium heat resistances in aluminium for the first time, researchers couple
Heat-resistant aluminum alloy wire has carried out numerous studies, and at the end of the 20th century, the conductivity of heat-resistant aluminum alloy wire is improved to 60%IACS,
Conducting wire is used for a long time temperature and reaches 210 DEG C.But with the raising of heat-resisting aluminium alloy heat resisting temperature, conductivity reduces obviously, defeated
Electric wire damage increases, this runs in the opposite direction with development energy sustainability economy.Therefore, under the premise of ensureing compared with high current-carrying capacity, how
The conductivity of heat-resisting aluminium alloy is improved, line loss is reduced and effectively control cost is urgently to be resolved hurrily as current heat-resistant aluminum alloy wire
Key technical problem.
Invention content
Present invention aims at a kind of high conductivity heat-resisting aluminium alloy monofilament material is provided, it is heat-resisting to solve routine 60%IACS
The big technical barrier of the low transmission of electricity line loss of aluminium alloy conductor conductivity.
To achieve the above object, following technical scheme is taken：
A kind of high conductivity heat-resisting aluminium alloy monofilament material, the alloy is by following raw material group by mass percentage
At：B 0.002~0.03%, Sn 0.02~0.10%, Zr 0.018~0.030%, Si 0.001~0.06%, Fe
0.001~0.15%, (V+Ti+Cr+Mn)≤0.01%, surplus is aluminium.
First preferred embodiment of the high conductivity heat-resisting aluminium alloy monofilament material, the alloy is by by mass percentage
The following raw material composition of meter：B 0.015~0.025%, Sn 0.05~0.10%, Zr 0.018~0.030%, Si 0.001
~0.06%, Fe 0.001~0.15%, (V+Ti+Cr+Mn)≤0.01%, surplus are aluminium.
Second preferred embodiment of the high conductivity heat-resisting aluminium alloy monofilament material, the alloy is by by mass percentage
The following raw material composition of meter：B 0.02%, Sn 0.05%, Zr 0.026%, Si 0.048%, Fe 0.128%, (V+Ti+Cr
+ Mn) 0.009%, surplus is aluminium.
The preparation method of the high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 730~750 DEG C, then at
At 750 DEG C, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：With refining agent refinery molten aluminium 15min, skim after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 700~720 DEG C, aluminium alloy ingots is made；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 510~530 DEG C to the aluminium that Ф 9.5mm are rolled into after 1h
Alloy round bar；
5) wire drawing：With the rate of 10~15m/s to Aluminum alloy round bar wire drawing made from step 4), with every time 6~10%
Deflection draw to obtain monofilament.
First optimal technical scheme of the preparation method of the high conductivity heat-resisting aluminium alloy monofilament material, step 2 institute
The temperature for stating refining is 720~730 DEG C.
Second optimal technical scheme of the preparation method of the high conductivity heat-resisting aluminium alloy monofilament material, step 3 institute
The size for stating aluminium alloy ingots is 22 × 22 × 380mm.
The third optimal technical scheme of the preparation method of the high conductivity heat-resisting aluminium alloy monofilament material, step 5 institute
The temperature for stating wire drawing is 30~50 DEG C；A diameter of 3.5~3.99mm of the monofilament.
Application of the high conductivity heat-resisting aluminium alloy monofilament material in aerial condutor.
Each alloys producing and mechanism are as follows：
Sn：Sn elements are indispensable rare metals in modern industry, and China's Tin Resources very abundant, is the world
The most country of upper tin ore proved reserves.Sn elements, which are added in the form of micro in aluminium alloy, can be obviously improved the microcosmic of aluminium alloy
Tissue and its mechanical property.Be added after Sn the rich Sn particles that are formed or be quickly cooled down formed dislocation ring can be direct or indirect
Play the role of promoting heterogeneous nucleation.When heating, Sn elements can be precipitated in the form of Sn atoms, to be played by force to aluminium alloy
Change acts on.Sn can form Al in melt again9Sn7、Al6Sn5、Al5Sn2And Al3Sn4Etc. a variety of alloy cpds, it is strong to form high temperature
Change phase, improve the thermal stability and high-temperature creep resistance of aluminium alloy operation, and aluminium alloy room temperature or height can be effectively improved
Corrosion resistance under the conditions of temperature.
Zr：The heat resistance for improving cond aluminium must try to prevent the reduction of alloy distortion energy, to prevent aluminium
Alloy strength declines because temperature increases.The addition of appropriate zirconium can be obviously improved the heat resistance of aluminium alloy, mainly due to zirconium original
Sub- radius ratio aluminium atom radius is bigger, and zirconium is diffused in aluminium with substitute mode, and diffusion activation energy is high, to sub- crystal grain
Subtle Al is precipitated in boundary3Zr phases, it is not easy agglomeration, and stability is high, inhibits the generation of recrystallization, at a higher temperature
Still can effective pinning dislocation and crystal boundary, hinder deformation and transgranular and Grain Boundary Sliding, so that creep resistance is improved, to make aluminium
The heat resistance of alloy is improved.Meanwhile the addition of zirconium can improve the creep-resistant property of aluminium alloy, enable aluminum alloy in height
Also the creep elongation for there was only very little under temperature therefore, it is possible to make spacing of the overhead transmission line between tower bar of transmitting electricity increase, and is protected
Hold the smaller pendency degree of aluminium alloy conductor.
B：If impurity element is to be dissolved state presence in aluminium conductor, the influence to electric conductivity is very big, and borax treatment energy
Effectively reduce impurity content, i.e., after a certain amount of B element being added in electrician's aluminium, can with Transition Group Impurities element Cr, Mn, V,
The impurity elements such as Ti react, and are allowed to be changed into compound state by solid solution state and are deposited on melt bottom and purify aluminium conductor, from
And improve the electric conductivity of aluminium alloy.At the same time, the heat resistance of alloy can be obviously improved by suitable Zr being added in aluminium conductor,
But the addition of Zr can also have an adverse effect to the electric conductivity of alloy.It is suitable some researches show that being added in the aluminium alloy containing Zr
B can ensure its electric conductivity under the premise of ensureing alloy heat resistance.It is generally believed that adding in control heat-resistant aluminium alloy material containing Zr
The B entered is in Zr：B=1：In the range of 2, the Zr in the B and alloy of addition forms ZrB2Compound, since compound disperses are distributed
And particle is smaller, ZrB2The nucleating center of Al atoms is cannot function as, therefore it will not generate Grain Refinement Effect to alloy, it will not
Increase crystal boundary, to reduce the negative effect that Zr elements generate the electric conductivity of alloy.However the addition of excess B is to containing Zr aluminium
Alloy has certain grain refining effect, but it can make alloy high-temp strength reduction, and alloy heat resistance is made to be deteriorated.
Si：Silica or silicate of the silicon in bauxite are a kind of major impurity elements in fine aluminium.Si
The casting character and welding mobility of aluminium alloy can be improved, moreover it is possible to enable aluminum alloy to that there is higher mechanical property.But as Si contains
Amount increases, and the resistivity of aluminium alloy increases.It is semiconductor this is mainly due to Si, it is much higher compared with the resistivity of aluminum substrate, therefore Si
The increase of content will reduce effective conductive cross-sectional area of aluminum substrate, reduce the conductivity of aluminium alloy.Therefore, duralumin material is reduced
Resistivity should reduce Si contents to the greatest extent.
Fe：Contain a certain amount of iron in aluminium, is a kind of major impurity in fine aluminium.Because of the tool that melting is used with casting
Mainly steel or cast iron, Fe elements will be brought into because of these tools in aluminium, and in remelting waste material, then can be mixed into iron and iron
Bits.Iron is harmful to the mechanical property for casting aluminium, because it is usually with coarse a crystal or Al-Fe-Si compound shapes
Formula exists, they all improve the hardness of aluminium to a certain extent, but the plasticity of aluminium is made to reduce.It recent studies have shown that, iron can carry
High aluminium conductor intensity, does not significantly reduce its electric conductivity.But also data show that in actual production, the Fe/Si in aluminium conductor
It is excessively high than should be 1.3~1.5, its resistivity can be made significantly to increase, so it should also be noted that the content of control iron.
Cr、Mn、V、Ti：It is the impurity element in electrician's fine aluminium.Cr, Mn, V, Ti impurity element in aluminium conductor is with solid
In the presence of solvent, it is easy to absorb the free electron in conductor material and fill their incomplete electronic shell.This conduction electricity
Subnumber purpose reduces the increase that can lead to aluminium conductor resistivity.Studies have shown that the illeffects of every 1% (Cr+Mn+V+Ti) is every
5 times to aluminium conductor electric conductivity illeffects of 1%Si.It can be seen that strictly controlling containing for Cr, Mn, V, Ti impurity element
It measures to ensureing that the electric conductivity of aluminium conductor plays an important roll.
Compared with the immediate prior art, the present invention has the following effects that：
1) present invention can either reduce aluminium alloy impurity and contain due to being added to micro B, Zr, Sn element in aluminium alloy
Amount, and thermal stability and high-temperature creep resistance that High-Temperature Strengthening mutually improves aluminium alloy can be formed, to ensure aluminum alloy materials
With good mechanical property and heat resistance while with high conductivity；
2) the heat-resisting aluminium alloy monofilament material prepared is led without being heat-treated to round bar or monofilament to simplify height
The preparation process of electric rate heat-resisting aluminium alloy monofilament material, reduces production cost；
3) conductivity >=61.2%IACS of heat-resisting aluminium alloy monofilament material prepared by the present invention, tensile strength >=
165MPa, elongation percentage ＞ 2.0%, heat resisting temperature >=150 DEG C, intensity remnants rates are more than 90% after 1h is heated at 230 DEG C.
Specific implementation mode
All embodiments are all made of existing smelting and rolling equipment.
Embodiment 1
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and its mass percent are：
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 730 DEG C, then at 750 DEG C
Under, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：Refining agent refinery molten aluminium 15min is used at 720 DEG C, is skimmed after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 700 DEG C, the aluminium that 22 × 22 × 380mm is made closes
Ingot；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 510 DEG C to the aluminum alloy round that Ф 9.5mm are rolled into after 1h
Bar；
5) wire drawing：At 30 DEG C, wire drawing is carried out to Aluminum alloy round bar made from step 4) with the rate of 10m/s, is drawn
To monofilament 3.60mm.
Prepared aluminium alloy monofilament conductivity is 61.68%IACS, tensile strength 168.9MPa, and elongation percentage is
2.40%, heat resistance 91.2%.
Embodiment 2
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and its mass percent are：
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 735 DEG C, then at 750 DEG C
Under, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：Refining agent refinery molten aluminium 15min is used at 725 DEG C, is skimmed after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 705 DEG C, the aluminium that 22 × 22 × 380mm is made closes
Ingot；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 515 DEG C to the aluminum alloy round that Ф 9.5mm are rolled into after 1h
Bar；
5) wire drawing：At 35 DEG C, wire drawing is carried out to Aluminum alloy round bar made from step 4) with the rate of 12m/s, is drawn
To monofilament 3.60mm.
Prepared aluminium alloy monofilament conductivity is 61.50%IACS, tensile strength 169.3MPa, and elongation percentage is
2.32%, heat resistance 92.0%.
Embodiment 3
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and its mass percent are：
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 740 DEG C, then at 750 DEG C
Under, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：Refining agent refinery molten aluminium 15min is used at 730 DEG C, is skimmed after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 710 DEG C, the aluminium that 22 × 22 × 380mm is made closes
Ingot；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 520 DEG C to the aluminum alloy round that Ф 9.5mm are rolled into after 1h
Bar；
5) wire drawing：At 40 DEG C, wire drawing is carried out to Aluminum alloy round bar made from step 4) with the rate of 15m/s, is drawn
To monofilament 3.84mm.
Prepared aluminium alloy monofilament conductivity is 61.70%IACS, tensile strength 168.0MPa, and elongation percentage is
2.5%, heat resistance 92.6%.
Embodiment 4
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and its mass percent are：
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 750 DEG C, re-melting Al-
The Sn that Zr alloys and purity are 99.95%；
2) it refines：Refining agent refinery molten aluminium 15min is used at 725 DEG C, is skimmed after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 720 DEG C, the aluminium that 22 × 22 × 380mm is made closes
Ingot；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 530 DEG C to the aluminum alloy round that Ф 9.5mm are rolled into after 1h
Bar；
5) wire drawing：At 50 DEG C, wire drawing is carried out to Aluminum alloy round bar made from step 4) with the rate of 10m/s, is drawn
To monofilament 3.99mm.
Prepared aluminium alloy monofilament conductivity is 61.43%IACS, tensile strength 167.1MPa, and elongation percentage is
2.52%, heat resistance 93.1%.
Embodiment 5
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and its mass percent are：
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 730 DEG C, then at 750 DEG C
Under, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：Refining agent refinery molten aluminium 15min is used at 730 DEG C, is skimmed after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 720 DEG C, the aluminium that 22 × 22 × 380mm is made closes
Ingot；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 520 DEG C to the aluminum alloy round that Ф 9.5mm are rolled into after 1h
Bar；
5) wire drawing：At 40 DEG C, wire drawing is carried out to Aluminum alloy round bar made from step 4) with the rate of 15m/s, is drawn
To monofilament 3.99mm.
Prepared aluminium alloy monofilament conductivity is 61.28%IACS, tensile strength 167.5MPa, and elongation percentage is
2.21%, heat resistance 94.0%.
The component list (wt%) of aluminium alloy monofilament prepared by 1 each embodiment of table
| Component | B | Zr | Sn | Cr+Mn+V+Ti | Fe | Si |
| Embodiment 1 | 0.015 | 0.018 | 0.05 | 0.01 | 0.138 | 0.053 |
| Embodiment 2 | 0.02 | 0.02 | 0.06 | 0.009 | 0.13 | 0.05 |
| Embodiment 3 | 0.02 | 0.026 | 0.05 | 0.009 | 0.128 | 0.048 |
| Embodiment 4 | 0.02 | 0.028 | 0.08 | 0.008 | 0.123 | 0.05 |
| Embodiment 5 | 0.025 | 0.30 | 0.10 | 0.007 | 0.114 | 0.047 |
The performance test results of aluminium alloy monofilament prepared by 2 each embodiment of table
The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out several
Improvement and modification, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (4)
1. a kind of high conductivity heat-resisting aluminium alloy monofilament material, it is characterised in that the alloy is following by by mass percentage
Raw material forms：B 0.02%, Sn 0.05%, Zr 0.026%, Si 0.048%, Fe 0.128%, (V+Ti+Cr+Mn)
0.009%, surplus is aluminium；
The preparation method of the high conductivity heat-resisting aluminium alloy monofilament material, includes the following steps：
1) it smelts：Melting commercial-purity aluminium ingot and Al-B intermediate alloys are skimmed after standing 30min at 730~750 DEG C, then at 750
At DEG C, Al-Zr alloys and purity are melted for 99.95% Sn；
2) it refines：With refining agent refinery molten aluminium 15min, skim after standing 40min；
3) it casts：Aluminum alloy melt is poured into red copper matter casting mould at 700~720 DEG C, aluminium alloy ingots is made；
4) bar processed：Aluminium alloy ingots made from step 3) is kept the temperature at 510~530 DEG C to the aluminium alloy that Ф 9.5mm are rolled into after 1h
Round bar；
5) wire drawing：With the rate of 10~15m/s to Aluminum alloy round bar wire drawing made from step 4), with every time 6~10% change
Shape amount draws to obtain monofilament；
The size of aluminium alloy ingots described in step 3 is 22 × 22 × 380mm.
2. high conductivity heat-resisting aluminium alloy monofilament material according to claim 1, it is characterised in that refined described in step 2
Temperature is 720~730 DEG C.
3. high conductivity heat-resisting aluminium alloy monofilament material according to claim 1, it is characterised in that wire drawing described in step 5
Temperature is 30~50 DEG C；A diameter of 3.5~3.99mm of the monofilament.
4. application of the high conductivity heat-resisting aluminium alloy monofilament material described in claim 1 in aerial condutor.
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| CN104894438B true CN104894438B (en) | 2018-07-20 |
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| CN105489263A (en) * | 2015-12-11 | 2016-04-13 | 百色学院 | Ultra-fine aluminum magnesium alloy filament material and preparation method thereof |
| CN106480342B (en) * | 2016-11-22 | 2018-05-04 | 河南中孚铝合金有限公司 | A kind of Aluminum alloy pole material and its production method with heat-resistant quality |
| CN108588555B (en) * | 2018-04-17 | 2022-08-09 | 全球能源互联网研究院有限公司 | Alloy steel for overhead conductor, preparation method of alloy steel and overhead conductor |
| CN110846543B (en) * | 2018-08-21 | 2022-05-31 | 国网辽宁省电力有限公司沈阳供电公司 | Heat-resistant alloy monofilament and preparation method thereof |
| CN109234553A (en) * | 2018-09-25 | 2019-01-18 | 全球能源互联网研究院有限公司 | A kind of Al-Zr-Sc-B heat-resisting alloy monofilament and preparation method thereof |
| CN109468498B (en) * | 2019-01-03 | 2020-10-30 | 包头铝业有限公司 | Heat-resistant aluminum alloy rod material for producing double-capacity wire and preparation method thereof |
| CN110819852A (en) * | 2019-10-30 | 2020-02-21 | 全球能源互联网研究院有限公司 | High-conductivity soft aluminum monofilament with good heat resistance and preparation method thereof |
| CN111411267A (en) * | 2019-11-12 | 2020-07-14 | 全球能源互联网研究院有限公司 | Conductive monofilament material and preparation method thereof |
| CN113957301B (en) * | 2021-10-28 | 2022-11-08 | 全球能源互联网研究院有限公司 | Aluminum alloy monofilament and preparation method thereof |
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