CN104894438A - High-conductivity heat-resisting aluminum alloy monofilament material and preparation method thereof - Google Patents
High-conductivity heat-resisting aluminum alloy monofilament material and preparation method thereof Download PDFInfo
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Abstract
The invention provides a high-conductivity heat-resisting aluminum alloy monofilament material and a preparation method thereof. The aluminum alloy monofilament material comprises raw materials in percentage by mass as follows: 0.002%-0.03% of B, 0.02%-0.10% of Sn, 0.018%-0.030% of Zr, 0.001%-0.06% of Si, 0.001%-0.15% of Fe, smaller than or equal to 0.01% of V, Ti, Cr and Mn and the balance of aluminum. The aluminum alloy monofilament material is prepared through smelting, refining, casting, rod making and wire drawing. The conductivity of the prepared heat-resisting aluminum alloy monofilament material is larger than or equal to 61.2% according to IACS (international annealed copper standard), the tensile strength is larger than or equal to 165 MPa, the elongation percentage is larger than 2.0%, the heat-resistance temperature is higher than or equal to 150 DEG C, and the residual strength ratio is larger than 90% after the material is heated for 1 hour at the temperature of 230 DEG C.
Description
Technical field
The invention belongs to power industry transmitting line aerial condutor technical field, be specifically related to a kind of high conductivity heat-resisting aluminium alloy monofilament material and preparation method thereof.
Background technology
Heat-resistant aluminum alloy wire has the characteristic such as low arc drop, increase-volume, can avoid carrying out track remodelling under the prerequisite changing shaft tower, operating temperature can be promoted to more than 120 DEG C, and current capacity improves more than 40%, is especially applicable to the capacity-increasing transformation of newly-built large capacity transmission circuit and the old circuit in resident compact district.The heat-resistant aluminium alloy material that heat-resistant aluminum alloy wire adopts, electric conductivity≤60%IACS (International Annealing Copper Standard 20 DEG C time, I.A.C.S.), transmission of electricity line loss is higher, and the electrician's aluminum feedstock mostly adopting purity higher when manufacturing, generally also needing to add the rare earth elements such as expensive Er, Y, Sc carries out microalloying modification in addition, and production and application cost is higher, also constrains its extensive development and application to a certain extent.
Since Harringtond in 1949 adds Zr raising aluminium resistance toheat first in aluminium, investigators have carried out large quantity research to heat-resistant aluminum alloy wire, to 20 end of the centurys, the electric conductivity of heat-resistant aluminum alloy wire is increased to 60%IACS, and wire life-time service temperature reaches 210 DEG C.But along with the raising of heat-resisting aluminium alloy heat resisting temperature, its electric conductivity reduces obviously, and transmission of electricity line loss increases, this runs in the opposite direction with development energy sustainability economy.Therefore, in guarantee compared with under the prerequisite of high current-carrying capacity, how to improve the electric conductivity of heat-resisting aluminium alloy, reduce line loss and effectively control cost and become current heat-resistant aluminum alloy wire key technical problem urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to provide a kind of high conductivity heat-resisting aluminium alloy monofilament material, solves the technical barrier that conventional 60%IACS heat-resistant aluminum alloy wire electric conductivity low transmission of electricity line loss is large.
For achieving the above object, following technical scheme is taked:
A kind of high conductivity heat-resisting aluminium alloy monofilament material, described alloy is made up of following raw material by mass percentage: 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 version of described high conductivity heat-resisting aluminium alloy monofilament material, described alloy is made up of following raw material by mass percentage: 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 is aluminium.
Second preferred version of described high conductivity heat-resisting aluminium alloy monofilament material, described alloy is made up of following raw material by mass percentage: 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 described high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after at 730 ~ 750 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min, skim after leaving standstill 40min;
3) cast: at 700 ~ 720 DEG C, aluminum alloy melt is poured in red copper matter casting mould, obtained aluminum alloy ingot;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 510 ~ 530 DEG C after;
5) wire drawing: with the speed of 10 ~ 15m/s to step 4) obtained Aluminum alloy round bar wire drawing, draw with every time deflection of 6 ~ 10% and obtain monofilament.
First optimal technical scheme of the preparation method of described high conductivity heat-resisting aluminium alloy monofilament material, the temperature of refining described in step 2 is 720 ~ 730 DEG C.
Second optimal technical scheme of the preparation method of described high conductivity heat-resisting aluminium alloy monofilament material, described in step 3, aluminum alloy ingot is of a size of 22 × 22 × 380mm.
3rd optimal technical scheme of the preparation method of described high conductivity heat-resisting aluminium alloy monofilament material, the temperature of wire drawing described in step 5 is 30 ~ 50 DEG C; The diameter of described monofilament is 3.5 ~ 3.99mm.
The described application of high conductivity heat-resisting aluminium alloy monofilament material in aerial condutor.
Each alloys producing and mechanism as follows:
Sn: Sn element is indispensable rare metal in modern industry, and China's Tin Resources is very abundant is the country that tin ore proven reserve are maximum in the world.Sn element adds the microtexture and its mechanical property that obviously can improve aluminium alloy in aluminium alloy with micro-form.The rich Sn particle formed after adding Sn or fast cooling institute form the effect that dislocation loop directly or indirectly can play promotion heterogeneous nucleation.During heating, Sn element can be separated out with the form of Sn atom, thus plays strengthening effect to aluminium alloy.Sn can form Al in melt again
9sn
7, Al
6sn
5, Al
5sn
2and Al
3sn
4etc. multiple alloy cpd, form High-Temperature Strengthening phase, improve thermostability and the high-temperature creep resistance of aluminium alloy operation, and effectively can improve the corrosion resistance under aluminium alloy room temperature or hot conditions.
Zr: the resistance toheat that improve cond aluminium must manage to prevent the minimizing of alloy distortional strain energy, thus prevent intensity of aluminum alloy Yin Wendu from raising and declining.Appropriate zirconium add the resistance toheat obviously improving aluminium alloy, bigger mainly due to zirconium atom radius ratio aluminium atomic radius, zirconium spreads with substitute mode in aluminium, and its diffusion activation energy is high, separates out trickle Al to sub-crystal grain border
3zr phase, it is agglomeration not easily, and stability is high, suppress the generation of recrystallize, at a higher temperature still can effectively pinning dislocation and crystal boundary, hinder distortion and intracrystalline and Grain Boundary Sliding, creep resistance is improved, thus the resistance toheat of aluminium alloy is improved.Meanwhile, zirconium add the creep-resistant property that can improve aluminium alloy, make aluminium alloy at high temperature also only have very little creep elongation, therefore, it is possible to make the spacing of overhead transmission line between electric transmission pole tower bar increase, and the pendency degree keeping aluminium alloy conductor less.
B: if impurity element exists with solid solution state in aluminium conductor, very large on the impact of conductivity, and borax treatment effectively can reduce foreign matter content, namely after adding a certain amount of B element in electrician's aluminium, can react with the impurity element such as Transition Group Impurities element Cr, Mn, V, Ti, make it to be changed into chemical combination state by solid solution state and be deposited on bottom melt to purify aluminium conductor, thus improve the conductivity of aluminium alloy.Meanwhile, add at aluminium conductor the resistance toheat that appropriate Zr obviously can improve alloy, but adding of Zr also the electroconductibility of alloy can have a negative impact.There are some researches show and add appropriate B in containing the aluminium alloy of Zr, its electroconductibility can be ensured under the prerequisite ensureing alloy thermotolerance.It is generally acknowledged, control containing the B added in Zr heat-resistant aluminium alloy material in the scope of Zr:B=1:2, the Zr in the B of interpolation and alloy forms ZrB
2compound, due to compound disperses distribution and particle is less, ZrB
2can not as the nucleating center of Al atom, therefore it can not produce Grain Refinement Effect by alloy, can not increase crystal boundary, thus the negative impact that the electroconductibility reducing Zr element alloy produces.But adding of excessive B has certain grain refining effect to containing Zr aluminium alloy, but it can make alloy high-temp intensity reduce, and alloy thermotolerance is deteriorated.
Si: silicon, mainly from the silicon-dioxide in bauxitic clay or silicate, is a kind of major impurity element in fine aluminium.Si can improve castability and the welding mobility of aluminium alloy, and aluminium alloy can also be made to have higher mechanical property.But along with Si content increases, the resistivity of aluminium alloy increases.This is mainly semi-conductor due to Si, much higher compared with the resistivity of aluminum substrate, therefore the increase of Si content will reduce effective conductive cross-sectional area of aluminum substrate, reduce the electric conductivity of aluminium alloy.Therefore, the resistivity reducing duralumin material should reduce Si content as far as possible.
Fe: containing a certain amount of iron in aluminium, be a kind of major impurity in fine aluminium.Because instrument mainly steel or the cast iron that melting uses with casting, Fe element will be brought in aluminium because of these instruments, and when remelting waste material, then can be mixed into iron and iron filings.The mechanical property of iron to cast aluminum-molykote composite material is harmful, because it exists with thick crystal or Al-Fe-Si compound form usually, they all improve the hardness of aluminium to a certain extent, but the plasticity of aluminium is reduced.Current research shows, iron can improve aluminium conductor intensity, does not significantly reduce its electroconductibility.But also have data to show in actual production, the Fe/Si ratio in aluminium conductor should be 1.3 ~ 1.5, too high, and its resistivity can be made significantly to raise, so also should the content of attentional manipulation iron.
Cr, Mn, V, Ti: be the impurity element in electrician's fine aluminium.When Cr, Mn, V, Ti impurity element in aluminium conductor exists with solid solution state, be easy to the unbound electron in absorption conductor material and fill their incomplete electronic shell.The minimizing of this conduction electron number can cause the increase of aluminium conductor resistivity.Research shows, the deleterious effect of every 1% (Cr+Mn+V+Ti) is that every 1%Si is to 5 times of aluminium conductor conductivity deleterious effect.This shows that the content of strictly control Cr, Mn, V, Ti impurity element is to ensureing that the conductivity of aluminium conductor has vital role.
Compared with immediate prior art, the present invention has following effect:
1) the present invention owing to the addition of B, Zr, Sn element of trace in aluminium alloy, aluminium alloy foreign matter content can either be reduced, thermostability and high-temperature creep resistance that High-Temperature Strengthening improves aluminium alloy mutually can be formed again, thus ensure, while aluminum alloy materials has high conductivity, there is good mechanical property and resistance toheat;
2) the heat-resisting aluminium alloy monofilament material prepared without the need to heat-treating round bar or monofilament, thus simplifies the preparation technology of high conductivity heat-resisting aluminium alloy monofilament material, reduces production cost;
3) electric conductivity >=61.2%IACS of heat-resisting aluminium alloy monofilament material for preparing of the present invention, tensile strength >=165MPa, unit elongation > 2.0%, heat resisting temperature >=150 DEG C, heat 1h at 230 DEG C after, the remaining rate of intensity is greater than 90%.
Embodiment
All embodiments all adopt existing smelting and rolling equipment.
Embodiment 1
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and mass percent thereof are:
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after at 730 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min at 720 DEG C, skim after leaving standstill 40min;
3) cast: at 700 DEG C, aluminum alloy melt is poured in red copper matter casting mould, the aluminum alloy ingot of obtained 22 × 22 × 380mm;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 510 DEG C after;
5) wire drawing: at 30 DEG C, with the speed of 10m/s to step 4) obtained Aluminum alloy round bar carries out wire drawing, and draw and obtain monofilament 3.60mm.
Prepared aluminium alloy monofilament electric conductivity is 61.68%IACS, and tensile strength is 168.9MPa, and unit elongation is 2.40%, thermotolerance 91.2%.
Embodiment 2
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and mass percent thereof are:
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after at 735 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min at 725 DEG C, skim after leaving standstill 40min;
3) cast: at 705 DEG C, aluminum alloy melt is poured in red copper matter casting mould, the aluminum alloy ingot of obtained 22 × 22 × 380mm;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 515 DEG C after;
5) wire drawing: at 35 DEG C, with the speed of 12m/s to step 4) obtained Aluminum alloy round bar carries out wire drawing, and draw and obtain monofilament 3.60mm.
Prepared aluminium alloy monofilament electric conductivity is 61.50%IACS, and tensile strength is 169.3MPa, and unit elongation is 2.32%, thermotolerance 92.0%.
Embodiment 3
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and mass percent thereof are:
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after at 740 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min at 730 DEG C, skim after leaving standstill 40min;
3) cast: at 710 DEG C, aluminum alloy melt is poured in red copper matter casting mould, the aluminum alloy ingot of obtained 22 × 22 × 380mm;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 520 DEG C after;
5) wire drawing: at 40 DEG C, with the speed of 15m/s to step 4) obtained Aluminum alloy round bar carries out wire drawing, and draw and obtain monofilament 3.84mm.
Prepared aluminium alloy monofilament electric conductivity is 61.70%IACS, and tensile strength is 168.0MPa, and unit elongation is 2.5%, thermotolerance 92.6%.
Embodiment 4
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and mass percent thereof are:
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min at 750 DEG C, then melt Al-Zr alloy and purity is the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min at 725 DEG C, skim after leaving standstill 40min;
3) cast: at 720 DEG C, aluminum alloy melt is poured in red copper matter casting mould, the aluminum alloy ingot of obtained 22 × 22 × 380mm;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 530 DEG C after;
5) wire drawing: at 50 DEG C, with the speed of 10m/s to step 4) obtained Aluminum alloy round bar carries out wire drawing, and draw and obtain monofilament 3.99mm.
Prepared aluminium alloy monofilament electric conductivity is 61.43%IACS, and tensile strength is 167.1MPa, and unit elongation is 2.52%, thermotolerance 93.1%.
Embodiment 5
A kind of high conductivity heat-resisting aluminium alloy monofilament material, component and mass percent thereof are:
The preparation method of above-mentioned high conductivity heat-resisting aluminium alloy monofilament material, comprises the following steps:
1) smelt: skim after at 730 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min at 730 DEG C, skim after leaving standstill 40min;
3) cast: at 720 DEG C, aluminum alloy melt is poured in red copper matter casting mould, the aluminum alloy ingot of obtained 22 × 22 × 380mm;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 520 DEG C after;
5) wire drawing: at 40 DEG C, with the speed of 15m/s to step 4) obtained Aluminum alloy round bar carries out wire drawing, and draw and obtain monofilament 3.99mm.
Prepared aluminium alloy monofilament electric conductivity is 61.28%IACS, and tensile strength is 167.5MPa, and unit elongation is 2.21%, thermotolerance 94.0%.
The component list (wt%) of aluminium alloy monofilament prepared by each embodiment of table 1
| 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 each embodiment of table 2
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a high conductivity heat-resisting aluminium alloy monofilament material, it is characterized in that described alloy is made up of following raw material by mass percentage: B 0.002 ~ 0.03%, Sn 0.02 ~ 0.10%, Zr 0.018 ~ 0.030%, Si0.001 ~ 0.06%, Fe 0.001 ~ 0.15%, (V+Ti+Cr+Mn)≤0.01%, surplus is aluminium.
2. high conductivity heat-resisting aluminium alloy monofilament material according to claim 1, it is characterized in that described alloy is made up of following raw material by mass percentage: B 0.015 ~ 0.025%, Sn 0.05 ~ 0.10%, Zr0.018 ~ 0.030%, Si 0.001 ~ 0.06%, Fe 0.001 ~ 0.15%, (V+Ti+Cr+Mn)≤0.01%, surplus is aluminium.
3. high conductivity heat-resisting aluminium alloy monofilament material according to claim 1, it is characterized in that described alloy is made up of following raw material by mass percentage: B 0.02%, Sn 0.05%, Zr 0.026%, Si0.048%, Fe 0.128%, (V+Ti+Cr+Mn) 0.009%, surplus is aluminium.
4. a preparation method for high conductivity heat-resisting aluminium alloy monofilament material according to claim 1, comprises the following steps:
1) smelt: skim after at 730 ~ 750 DEG C, melting commercial-purity aluminium ingot and Al-B master alloy leave standstill 30min, then at 750 DEG C, fusing Al-Zr alloy and purity are the Sn of 99.95%;
2) refining: with refining agent refinery molten aluminium 15min, skim after leaving standstill 40min;
3) cast: at 700 ~ 720 DEG C, aluminum alloy melt is poured in red copper matter casting mould, obtained aluminum alloy ingot;
4) bar processed: by step 3) obtained aluminum alloy ingot is rolled into the Aluminum alloy round bar of Ф 9.5mm be incubated 1h at 510 ~ 530 DEG C after;
5) wire drawing: with the speed of 10 ~ 15m/s to step 4) obtained Aluminum alloy round bar wire drawing, draw with every time deflection of 6 ~ 10% and obtain monofilament.
5. the preparation method of high conductivity heat-resisting aluminium alloy monofilament material according to claim 4, is characterized in that the temperature of refining described in step 2 is 720 ~ 730 DEG C.
6. the preparation method of high conductivity heat-resisting aluminium alloy monofilament material according to claim 4, is characterized in that described in step 3, aluminum alloy ingot is of a size of 22 × 22 × 380mm.
7. the preparation method of high conductivity heat-resisting aluminium alloy monofilament material according to claim 4, is characterized in that the temperature of wire drawing described in step 5 is 30 ~ 50 DEG C; The diameter of described monofilament is 3.5 ~ 3.99mm.
8. the arbitrary described application of high conductivity heat-resisting aluminium alloy monofilament material in aerial condutor of claim 1-3.
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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 |
| CN106480342A (en) * | 2016-11-22 | 2017-03-08 | 河南中孚铝合金有限公司 | A kind of Aluminum alloy pole material with heat-resistant quality and its production method |
| CN108588555A (en) * | 2018-04-17 | 2018-09-28 | 全球能源互联网研究院有限公司 | A kind of aerial condutor steel alloy, steel alloy preparation method and aerial condutor |
| 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 |
| CN109468498A (en) * | 2019-01-03 | 2019-03-15 | 包头铝业有限公司 | It is a kind of for producing times the heat-resisting aluminium alloy pole stock and preparation method thereof for holding conducting wire |
| 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 |
| CN110846543A (en) * | 2018-08-21 | 2020-02-28 | 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 |
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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 |
| CN106480342A (en) * | 2016-11-22 | 2017-03-08 | 河南中孚铝合金有限公司 | A kind of Aluminum alloy pole material with heat-resistant quality and its production method |
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| CN108588555A (en) * | 2018-04-17 | 2018-09-28 | 全球能源互联网研究院有限公司 | A kind of aerial condutor steel alloy, steel alloy preparation method and aerial condutor |
| CN110846543A (en) * | 2018-08-21 | 2020-02-28 | 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 |
| 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 |
| CN109468498A (en) * | 2019-01-03 | 2019-03-15 | 包头铝业有限公司 | It is a kind of for producing times the heat-resisting aluminium alloy pole stock and preparation method thereof for holding conducting wire |
| 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 |
| CN113957301A (en) * | 2021-10-28 | 2022-01-21 | 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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Address after: 102209 Beijing City, Changping District science and Technology Park in the future smart grid research institute hospital Applicant after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Applicant after: State Grid Corporation of China Applicant after: State Grid Hebei Electric Power Company Applicant after: Zhoukou Power Supply Company of State Grid Henan Electric Power Company Applicant after: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Applicant after: Dandong Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Address before: 102211 Beijing city Changping District Xiaotangshan town big East Village Road No. 270 (future technology city) Applicant before: State Grid Smart Grid Institute Applicant before: State Grid Corporation of China Applicant before: State Grid Hebei Electric Power Company Applicant before: Zhoukou Power Supply Company of State Grid Henan Electric Power Company Applicant before: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Applicant before: Dandong Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. |
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Inventor after: Zhu Zhixiang Inventor after: Zhao Rui Inventor after: Feng Yanting Inventor after: Xia Yujue Inventor after: Sun Chenjun Inventor after: Guan Wei Inventor after: Yu Xin Inventor after: Liu Jun Inventor after: Xu Peihong Inventor after: Yang Yin Inventor after: Fu Shaopeng Inventor after: Chen Baoan Inventor after: Han Yu Inventor after: Ge Weichun Inventor after: Zhang Qiang Inventor after: Pan Xuedong Inventor after: Chen Xin Inventor after: Yang Changlong Inventor after: Shi Hongwei Inventor before: Zhu Zhixiang Inventor before: Feng Yanting Inventor before: Yu Xin Inventor before: Liu Jun Inventor before: Yang Yin Inventor before: Fu Shaopeng Inventor before: Chen Baoan Inventor before: Han Yu Inventor before: Zhang Qiang Inventor before: Pan Xuedong Inventor before: Chen Xin Inventor before: Yang Changlong Inventor before: Shi Hongwei Inventor before: Zhao Rui |
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