CN101834012B - High-conductivity hard aluminum wire and manufacture method thereof - Google Patents
High-conductivity hard aluminum wire and manufacture method thereof Download PDFInfo
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Abstract
The invention discloses a high-conductivity hard aluminum wire and a manufacture method thereof. The high-conductivity hard aluminum wire comprises a central stiffener (1) and a high-conductivity hard aluminum conductor layer component (2), wherein the central stiffener (1) is formed by a single central stiffening wire or is formed by twisting a plurality of stiffening wires; the high-conductivity hard aluminum conductor layer component (2) is formed by twisting a plurality of high-conductivity hard aluminum single wires and is spirally wound on the central stiffener (1). The high-conductivity hard aluminum wire is characterized in that the high-conductivity hard aluminum single wire contains the following components: not more than 0.06wt% of silicon, not more than 0.138wt% of ferrum, 0.005wt% to 0.06wt% of titanium, 0.01wt% to 0.12wt% of boron and the balance of aluminum, wherein the ratio of ferrum to silicon is 1.8 to 2.3. The invention can increase the transmission capacity amount of transmission lines and reduce consumption of lines so as to effectively reduce the operation cost.
Description
Technical field
The invention discloses a kind of high-conductivity hard aluminum wire, the invention also discloses a kind of manufacture method of high-conductivity hard aluminum wire.
Background technology
" energy-saving and emission-reduction " also are the policies of national industry long-run development.Simultaneously State Grid Corporation of China has also proposed the novel intelligent electrical network of construction " resource-conserving, environmentally friendly, new technology, new material, new technology ".The delivery guidewire that overhead transmission line is commonly used is common steel reinforced aluminium conductor at present, and the hard-drawn aluminium wire that the used aluminum steel conductance of common steel reinforced aluminium conductor is 61%IACS, general resistivity is at 0.02790～0.028264 Ω mm
2/ m, and in the aerial condutor, mainly rely on aluminum steel to come transmission current, if can improve the conductance of aluminum steel, then can reduce the circuit energy consumption, thereby reduce the operating cost of circuit.
Many enterprises are arranged at exploitation steel core soft aluminum conductor, the aluminum steel that draws are handled through annealing process, make its again crystallization become annealed aluminum wire, make soft aluminum conductor in strand, the conductance of annealed aluminum wire can reach 63%IACS, general resistivity is at 0.027151～0.027586 Ω mm
2/ m.Though the steel core soft aluminum conductor has improved the conductance of aluminum steel, the intensity of aluminum steel and hardness reduce, and cause the construction exhibition to put difficulty, and security performance reduces simultaneously.After the intensity of aluminum steel and hardness reduce, easily abrade conductive line surfaces in the construction, thereby cause circuit operation noise, electromagnetic interference strengthens, anti-corona ability drop, makes its environmental-protecting performance and energy-saving effect unsatisfactory.Also can produce flotation line (playing lantern) during exhibition is put simultaneously, jump phenomenons such as thigh, influence the overall performance of lead because of single line extends.
Duralumin used more than 100 year in the world as the transfer wire conductor, security of operation, reliable.Setting about exploring a kind of safe, reliable, energy-conserving product from the conductance that improves hard-drawn aluminium wire, is the direction that the various countries engineers and technicians make great efforts.
Summary of the invention
One of purpose of the present invention is to overcome the deficiencies in the prior art, and a kind of transmission capacitance that can improve transmission line is provided, and reduces line loss, thereby effectively reduces the high-conductivity hard aluminum wire of operating cost.
Another object of the present invention provides a kind of manufacture method of above-mentioned high-conductivity hard aluminum wire.
According to technical scheme provided by the invention, described high-conductivity hard aluminum wire, comprise center stiffener and high-conductivity hard aluminum conductor strand layer member, the center stiffener is made of single center line feeder or constitutes by many line feeders are stranded, high-conductivity hard aluminum conductor strand layer member formed by many high-conductivity hard aluminum single line strand systems, high-conductivity hard aluminum conductor strand layer member is spirally wound on the stiffener of center, the each component that comprises following weight percentage in the described high-conductivity hard aluminum single line: silicon content≤0.06%, iron content≤0.138%, the iron silicon ratio example is controlled between 1.8～2.3; Titanium elements content is 0.005%～0.06%, and boron content is 0.01%～0.12%, and all the other are aluminium element.
The preparation method of described high-conductivity hard aluminum wire comprises following steps:
The aluminium ingot of a, employing trade mark AL99.70A or the above trade mark is with melting the melting of aluminium stove, aluminium liquid after the melting flows in the holding furnace, regulate iron silicone content ratio in the aluminium liquid by the aluminium ingot proportioning, be controlled between 1.8～2.3, and element silicon weight percentage≤0.06%, ferro element weight percentage≤0.138%;
Rise when more than half when the aluminium liquid holding furnace in b, the molten aluminium process,, control in the aluminium liquid boron element weight percentage 0.01%～0.06% at molten aluminium stove adding boron aluminium intermediate alloy to the chute of holding furnace;
After c, melting are finished, refining agent with nitrogen or inert gas to be carrier be blown in the aluminium liquid of holding furnace bottom relative aluminium liquid weight 0.1%～0.5% carries out purified treatment, and the aluminum mixture liquid temp is controlled at 720～760 ℃, after leaving standstill 8～15min, open the door of skimming, the aluminium slag on cleaning aluminum mixture liquid surface;
Add the Ti-B alloy grain refiner in d, the aluminum mixture liquid after handling toward step c and carry out purified treatment, the refinement casting crystalline grain, guarantee that the titanium elements weight percentage is controlled at 0.005%～0.06% in the aluminum mixture liquid, the boron element weight percentage is 0.01%～0.12%, after leaving standstill 5～10min, open the door of skimming, clear up the aluminium slag on aluminum mixture liquid surface once more;
After aluminium liquid after e, steps d are handled leaves standstill 5～15min, in continuous casting and rolling, roll out the high conductivity aluminium bar of diameter range at 8-12mm;
On the aluminium wire drawing machine, join die drawing system duralumin single line crude product after the aluminium bar that f, step e produce is cooled to room temperature, can make drawing minimum the electric conductivity influence by compression ratio 25%～30%;
G, duralumin single line crude product carry out low temperature recovery to be handled, and area is 12mm
2And 12mm
2Following aluminum steel kept 3～5 hours under 100～160 ℃ of conditions, and area is at 12mm
2Above aluminum steel need keep handling 2～4 hours under 100～160 ℃ of conditions, and low temperature recovery makes the high-conductivity hard aluminum single line after handling---aluminium single line intensity 〉=160MPa, conductance 〉=63%IACS;
H, aluminum steel after every layer of stranded moulding of conductor, be eliminated the stress that produces in the strand system process through one heater in moulding strand system process.The temperature of heater is set according to speed of production: speed of production is below 15m/min, and the temperature of heater is controlled at 280～330 ℃; Speed of production is between 15～25m/min, and the temperature of heater is controlled at 330～380 ℃; Speed of production is more than 25m/min, and the temperature of heater is controlled at 380～450 ℃.
Described refining agent is that 15～25% sodium chloride, 30～40% potassium chloride, 5～12% carbon trichloride, 3～7% potassium fluoborate, 12～16% cryolite and 10～20% charcoal powder mix, and unit is a percetage by weight.Described Ti-B alloy grain refiner is 4～8% titanium, 0.5～2% boron, and surplus is aluminium, and unit is a percetage by weight.In the preparation of Ti-B alloy grain refiner and interpolation process, want the rational control time, avoid too much production to form TiAl
3, TiAl
3Dissolve in aluminium liquid, the meeting solid solution brings adverse effect to the aluminum steel conductance under the condition that continuous casting cools off fast in aluminum substrate.
Advantage of the present invention is: in order to improve the conductance of hard aluminum wire, bringing into of objectionable impurities controlled in strictness from technology, guarantees that Si, Fe content are than between 1.8～2.3; Carry out boronation, refining, titanizing in producing simultaneously and handle, can produce the hard attitude aluminum steel of conductance 〉=63%IACS then through treatment process such as crystallization, rolling, drawing, answers, intensity 〉=160Mpa, the sectional area of this aluminum steel is at 5.0～25mm
2Can be circle, abnormal shape, all the other performances satisfy the specification requirement of aerial condutor with hard-drawn aluminium wire.This hard-drawn aluminium wire cooperates the stiffener stranded conductance that produces in center at the above high-conductivity hard aluminum wire of 63%IACS.This lead has high current-carrying, and low resistance, can adopt traditional construction technology at high security; In this lead of circuit operation use, can reduce line loss, save operating expenses, bring huge economic benefit and social benefit for the power transmission and transformation industry.
Description of drawings
Fig. 1 is the overall structure schematic diagram of high-conductivity hard aluminum wire embodiment 1 of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the overall structure schematic diagram of high-conductivity hard aluminum wire embodiment 2 of the present invention.
Fig. 4 is the B-B cutaway view of Fig. 3.
Fig. 5 is the overall structure schematic diagram of high-conductivity hard aluminum wire embodiment 3 of the present invention.
Fig. 6 is the C-C cutaway view of Fig. 5.
Fig. 7 is high-conductivity hard aluminum wire strand system technological process of production figure of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
Adopt the aluminium ingot of 8 tons of trade mark Al99.70A to melt, add 20kg boron aluminium intermediate alloy (Al-B) in the fusion process, in holding furnace, carry out purified treatment at the refining agent that furnace bottom is blown into 25kg with nitrogen, described refining agent is 16% sodium chloride by weight percentage, weight percentage is 38% potassium chloride, weight percentage is 6% carbon trichloride, weight percentage is 6% potassium fluoborate, weight percentage is that 14% cryolite and weight percentage are that 11% charcoal powder mixes, Control for Kiln Temperature is at 740 ℃ during purified treatment, after leaving standstill 10min, opening the door of skimming skims, skim and finish back adding 10kg Ti-B alloy grain refiner (Al-Ti-B), described Ti-B alloy grain refiner is 8% titanium by weight percentage, weight percentage is that 1% boron and weight percentage are that 91% aluminium constitutes, take a sample after leaving standstill 5min, adopt the ICP emission spectrometer to analyze Si content 0.0453% in the aluminium liquid; Fe content 0.1083%, iron silicone content ratio is 1.92, Ti content 0.0156%, B content 0.0564%; After leaving standstill 10min, open the holding furnace valve, aluminium liquid flows into and drops down groove, and with entering crystallizing wheel after the fiber glass filtering net filtration treatment, it is 480 ℃ that ingot casting advances to roll temperature, and rolling saponification liquor temperature is controlled to be 45 ℃, and the rod finishing temperature is 250 ℃, and the aluminium shank diameter is 9.5mm; The aluminium bar is after cooling off 36 hours, and drawing 45 dish diameters with 7 road moulds on high speed aluminium wire drawing machine is the duralumin single line crude product of 4.53mm circle; Duralumin single line crude product is sent into aging furnace, under 140 ℃ of conditions, reply processing, kept 150 minutes, obtain the high-conductivity hard aluminum single line, the electrical property and the mechanical performance of high-conductivity hard aluminum single line detected in the cooling back, and its resistivity is: 0.027152～0.027356 Ω mm
2/ m, conductance is 63.5～63.02%IACS, percentage elongation mean value is 2%, average strength 169Mpa.It is that 3.02mm High Strength Steel twisted wire is made that center stiffener 1 adopts 7 diameters.
Utilize above material to adopt the described technology of preamble to make high-conductivity hard aluminum wire shown in Figure 1.With the high-conductivity hard aluminum single line that 45 dishes are handled through low temperature recovery, wherein 9 dishes place first framework, 12,15 dishes to place second framework, 14,21 dishes to place the 3rd framework 16; Center stiffener 1 places on the pay off rack 11 of stranding machine end, and high-conductivity hard aluminum single line concentric stranding is formed high-conductivity hard aluminum conductor strand layer member 2 on center stiffener 1, and outer strand is to being dextrad, and the adjacent layer direction is opposite; Speed of production 28m/min, the length of first heater 13 is 3.5 meters, and temperature is set 400 ℃, and the length of second heater 15 is 4 meters, and temperature is set 400 ℃, and the 3rd heater 17 length are 5 meters, and temperature is set 400 ℃; By draw-gear 18 tractions, be wound up in lopping on the dish tool of take-up 19.Producing external diameter is the high-conductivity hard aluminum single line of three layers of conductor structure of 36.24mm, and lay configuration is tight, and moulding is intact, does not have bounce-back, pine burst phenomenon, and the aluminium single line of conductor strand layer member 2 is hard attitude aluminum steel after tested, and resistivity is at 0.027148～0.027365 Ω mm
2/ m, conductance 63.5～63.0%IACS, percentage elongation mean value are 2%, average strength 165Mpa.
Adopt the aluminium ingot of 8 tons of trade mark Al99.70A to melt, add 25kg boron aluminium intermediate alloy (Al-B) in the fusion process, in holding furnace, carry out purified treatment at the refining agent that furnace bottom is blown into 30kg with nitrogen, described refining agent is 20% sodium chloride by weight percentage, weight percentage is 34% potassium chloride, weight percentage is 8% carbon trichloride, weight percentage is 5% potassium fluoborate, weight percentage is that 15% cryolite and weight percentage are that 18% charcoal powder mixes, Control for Kiln Temperature is at 760 ℃ during purified treatment, after leaving standstill 8min, opening the door of skimming skims, skim and finish back adding 8kg Ti-B alloy grain refiner (Al-Ti-B), described Ti-B alloy grain refiner is 6% titanium by weight percentage, weight percentage is that 1% boron and weight percentage are that 93% aluminium constitutes, take a sample after leaving standstill 10min, adopt the ICP emission spectrometer to analyze Si content 0.0516% in the aluminium liquid; Fe content 0.1103%, iron silicone content ratio is 2.14, Ti content 0.0234%, B content 0.0613%; After leaving standstill 15min, open the holding furnace valve, aluminium liquid flows into and drops down groove, and with entering crystallizing wheel after the fiber glass filtering net filtration treatment, it is 460 ℃ that ingot casting advances to roll temperature, and rolling saponification liquor temperature is controlled to be 45 ℃, and the rod finishing temperature is 230 ℃, and the aluminium shank diameter is 9.5mm; The aluminium bar is after cooling off 36 hours, and drawing 42 dish sectional areas with 7 road moulds on high speed aluminium wire drawing machine is 17.2mm
2Section be the high-conductivity hard aluminum single line crude product of " Z " type; High-conductivity hard aluminum single line crude product is sent into aging furnace, under 125 ℃ of conditions, reply processing, kept 180 minutes, obtain the high-conductivity hard aluminum single line, the electrical property and the mechanical performance of high-conductivity hard aluminum single line detected in the cooling back, and its resistivity is 0.027168～0.027361 Ω mm
2/ m, conductance is 63.5～63.0%IACS, percentage elongation mean value is 2%, average strength 173Mpa.It is the 3.21mm galvanized strand wires that center stiffener 1 adopts 7 diameters.
Utilize above material to adopt the described technology of preamble to make high-conductivity hard aluminum wire shown in Figure 3.With the high-conductivity hard aluminum single line that 42 dishes are handled through low temperature recovery, wherein 9 dishes place first framework, 12,14 dishes to place second framework, 14,19 dishes to place the 3rd framework 16; Center stiffener 1 places on the pay off rack 11 of stranding machine end, and high-conductivity hard aluminum single line concentric stranding on center stiffener 1, is obtained high-conductivity hard aluminum conductor strand layer member 2, and outer strand is to being dextrad, and the adjacent layer direction is opposite; Speed of production is 17.8m/min, and first heater, 13 length are 3.5 meters, and temperature is set 350 ℃, and second heater, 15 length are 4 meters, and temperature is set 350 ℃, and the 3rd heater 17 length are 5 meters, and temperature is set 350 ℃; In the traction by draw-gear 18, lopping is wound up on the dish tool of take-up 19.Producing external diameter is the high-conductivity hard aluminum single line of three layers of conductor structure of 32.98mm, and lay configuration is tight, and moulding is intact, does not have bounce-back, pine burst phenomenon, and the aluminium single line of conductor strand layer member 2 is hard attitude aluminum steel after tested, resistivity 0.027213～0.027364 Ω mm
2/ m, conductance is 63.35～63.0%IACS, percentage elongation mean value is 2%, average strength 169Mpa.
Embodiment 3
Adopt the aluminium ingot of 6 tons of trade mark Al99.85 to melt, add 18kg boron aluminium intermediate alloy (Al-B) in the fusion process, in holding furnace, carry out purified treatment at the refining agent that furnace bottom is blown into 20kg with nitrogen, described refining agent is 24% sodium chloride by weight percentage, weight percentage is 31% potassium chloride, weight percentage is 12% carbon trichloride, weight percentage is 4% potassium fluoborate, weight percentage is that 12% cryolite and weight percentage are that 17% charcoal powder mixes, Control for Kiln Temperature is at 720 ℃ during purified treatment, after leaving standstill 15min, opening the door of skimming skims, skim and finish back adding 6kg Ti-B alloy grain refiner (Al-Ti-B), described Ti-B alloy grain refiner is 4% titanium by weight percentage, weight percentage is that 1.5% boron and weight percentage are that 94.5% aluminium constitutes, take a sample after leaving standstill 10min, adopt the ICP emission spectrometer to analyze Si content 0.0398% in the aluminium liquid; Fe content 0.0876%, iron silicone content ratio is 2.20, Ti content 0.0121%, B content 0.0643%; After leaving standstill 15min, open the holding furnace valve, aluminium liquid flows into and drops down groove, and with entering crystallizing wheel after the fiber glass filtering net filtration treatment, it is 460 ℃ that ingot casting advances to roll temperature, and rolling saponification liquor temperature is controlled to be 40 ℃, and the rod finishing temperature is 240 ℃, and the aluminium shank diameter is 9.5mm; The aluminium bar is after cooling off 48 hours, and drawing 40 dish sectional areas with 7 road moulds on high speed aluminium wire drawing machine is 18mm
2The high-conductivity hard aluminum single line crude product of ladder type; High-conductivity hard aluminum single line crude product is sent into aging furnace, under 125 ℃ of conditions, reply processing, kept 180 minutes, obtain the high-conductivity hard aluminum single line, the electrical property of high-conductivity hard aluminum single line and mechanical performance after testing after the cooling, resistivity is 0.027096～0.027274 Ω mm2/m, conductance is 63.6～63.2%IACS, percentage elongation mean value is 2%, average strength 165Mpa.It is the 3.21mm galvanized strand wires that center stiffener 1 adopts 7 diameters.
Utilize above material to adopt the described technology of preamble to make high-conductivity hard aluminum wire shown in Figure 5.With the high-conductivity hard aluminum single line of 40 dishes through the low-temperature heat Ageing Treatment, wherein 8 dishes place first framework, 12,13 dishes to place second framework, 14,19 dishes to place the 3rd framework 16; Center stiffener 1 places on the pay off rack 11 of stranding machine end, and high-conductivity hard aluminum single line concentric stranding on center stiffener 1, is obtained high-conductivity hard aluminum conductor strand layer member 2, and outer strand is to being dextrad, and the adjacent layer direction is opposite; Speed of production 15m/min, first heater, 13 length are 3.5 meters, and temperature is set 330 ℃, and second heater, 15 length are 4 meters, and temperature is set 330 ℃, and the 3rd heater 17 length are 5 meters, and temperature is set 330 ℃; Drawing by draw-gear 18, lopping is wound up on the dish tool of take-up 19.Producing external diameter is the high-conductivity hard aluminum single line of three layers of conductor structure of 32.98mm, and lay configuration is tight, and moulding is intact, does not have bounce-back, pine burst phenomenon, and the aluminium single line of conductor strand layer member 2 is hard attitude aluminum steel after tested, resistivity 0.027106～0.027283 Ω mm
2/ m, conductance is 63.6～63.2%IACS, percentage elongation mean value is 2%, average strength 168Mpa.
Above-mentioned only is to summary of the present invention and displaying.This invention is not limited thereto; unless appended requirement is defined to some extent; those skilled in the art are under the guidance of this specification; obviously can adjust formula for a product, technological parameter and delete the part process procedure; be fit to the wire product that other field is used thereby make, these are all within protection of the present invention.
Claims (6)
1. high-conductivity hard aluminum wire, comprise center stiffener (1) and high-conductivity hard aluminum conductor strand layer member (2), center stiffener (1) is made of single center line feeder or constitutes by many line feeders are stranded, high-conductivity hard aluminum conductor strand layer member (2) formed by many high-conductivity hard aluminum single line strand systems, high-conductivity hard aluminum conductor strand layer member (2) is spirally wound on the center stiffener (1), it is characterized in that comprising in the described high-conductivity hard aluminum single line each component of following weight percentage: silicon content≤0.06%; Iron content≤0.138%, the iron silicon ratio example is controlled between 1.8～2.3; Titanium elements content is 0.005%～0.06%, and boron content is 0.01%～0.12%, and all the other are aluminium element.
2. the preparation method of the described high-conductivity hard aluminum wire of claim 1 comprises following steps:
The aluminium ingot of a, employing trade mark AL99.70A or the above trade mark is with melting the melting of aluminium stove, aluminium liquid after the melting flows in the holding furnace, regulate iron silicone content ratio in the aluminium liquid by the aluminium ingot proportioning, be controlled between 1.8～2.3, and element silicon weight percentage≤0.06%, ferro element weight percentage≤0.138%;
Rise when more than half when the aluminium liquid holding furnace in b, the molten aluminium process,, control in the aluminium liquid boron element weight percentage 0.01%～0.06% at molten aluminium stove adding boron aluminium intermediate alloy to the chute of holding furnace;
After c, melting are finished, refining agent with inert gas to be carrier be blown in the aluminium liquid of holding furnace bottom relative aluminium liquid weight 0.1%～0.5% carries out purified treatment, and the aluminum mixture liquid temp is controlled at 720～760 ℃, after leaving standstill 8～15min, open the door of skimming, the aluminium slag on cleaning aluminum mixture liquid surface;
Add the Ti-B alloy grain refiner in d, the aluminum mixture liquid after handling toward step c and carry out purified treatment, the refinement casting crystalline grain, guarantee that the titanium elements weight percentage is controlled at 0.005%～0.06% in the aluminum mixture liquid, the boron element weight percentage is 0.01%～0.12%, after leaving standstill 5～10min, open the door of skimming, clear up the aluminium slag on aluminum mixture liquid surface once more;
After aluminium liquid after e, steps d are handled leaves standstill 5～15min, in continuous casting and rolling, roll out the high conductivity aluminium bar of diameter range at 8-12mm;
After being cooled to room temperature, the aluminium bar that f, step e produce on the aluminium wire drawing machine, joins die drawing system duralumin single line crude product by compression ratio 25%～30%;
G, duralumin single line crude product carry out low temperature recovery to be handled, and area is 12mm
2And 12mm
2Following aluminum steel kept 3～5 hours under 100～160 ℃ of conditions, and area is at 12mm
2Above aluminum steel need keep handling 2～4 hours under 100～160 ℃ of conditions, makes the aluminium single line intensity 〉=160MPa of high-conductivity hard aluminum single line after low temperature recovery is handled, conductance 〉=63%IACS;
H, aluminum steel after every layer of stranded moulding of conductor, be eliminated the stress that produces in the strand system process through one heater in moulding strand system process; The temperature of heater is set according to speed of production: speed of production is below 15m/min, and the temperature of heater is controlled at 280～330 ℃; Speed of production is between 15～25m/min, and the temperature of heater is controlled at 330～380 ℃; Speed of production is more than 25m/min, and the temperature of heater is controlled at 380～450 ℃.
3. the preparation method of high-conductivity hard aluminum wire according to claim 2, it is characterized in that: described refining agent is that 15～25% sodium chloride, 30～40% potassium chloride, 5～12% carbon trichloride, 3～7% potassium fluoborate, 12～16% cryolite and 10～20% charcoal powder mix, and unit is a percetage by weight.
4. the preparation method of high-conductivity hard aluminum wire according to claim 2, it is characterized in that: described Ti-B alloy grain refiner is 4～8% titanium, 0.5～2% boron, and surplus is aluminium, and unit is a percetage by weight.
5. as the preparation method of high-conductivity hard aluminum wire as described in the claim 2, it is characterized in that the residualinternal stress of aluminum steel inside is eliminated or reduced to duralumin single line crude product after handling through low temperature recovery, the electric conductivity of duralumin single line crude product is improved, and mechanical performance is constant substantially.
6. as the preparation method of high-conductivity hard aluminum wire as described in the claim 2, it is characterized in that described inert gas is a nitrogen.
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| CN103093855A (en) * | 2013-01-30 | 2013-05-08 | 东南大学 | High conductivity rare earth hard aluminum conductor and preparation method |
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| CN103730203A (en) * | 2013-12-26 | 2014-04-16 | 远东电缆有限公司 | Composite core high-conductivity duralumin conductor and manufacturing method thereof |
| CN103854807B (en) * | 2014-02-26 | 2016-10-19 | 远东电缆有限公司 | A kind of high-conductivity hard aluminum wire and preparation technology thereof |
| CN105671372B (en) * | 2016-01-25 | 2017-11-28 | 华北电力大学 | A kind of duralumin conductor material of 63%IACS and preparation method thereof |
| CN105950893B (en) * | 2016-06-02 | 2018-04-10 | 远东电缆有限公司 | A kind of inexpensive 63%IACS high-conductivity hard aluminum wires and its manufacture method |
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| CN101834012A (en) | 2010-09-15 |
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