CN103725927A - Al-Fe-Cu-Mg aluminum alloy and medium-voltage cable prepared from Al-Fe-Cu-Mg aluminum alloy - Google Patents
Al-Fe-Cu-Mg aluminum alloy and medium-voltage cable prepared from Al-Fe-Cu-Mg aluminum alloy Download PDFInfo
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- CN103725927A CN103725927A CN201310733065.2A CN201310733065A CN103725927A CN 103725927 A CN103725927 A CN 103725927A CN 201310733065 A CN201310733065 A CN 201310733065A CN 103725927 A CN103725927 A CN 103725927A
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Abstract
The invention discloses Al-Fe-Cu-Mg aluminum alloy. The cold workability of the aluminum alloy can be significantly improved by adding B, so that an aluminum alloy rod disclosed by the invention does not generate a corrosion spot or crack in a cold-drawing process due to stress concentration, and the minimal diameter of a monofilament of the aluminum alloy after drawing can be up to 0.3mm. The content of Si is defined, the tensile property is reduced due to excessive Si, the processability of the cable is affected, the bending fatigue property of a conductor can be reduced, and the electric property also can be reduced by excessive Si. By adopting the Al-Fe-Cu-Mg aluminum alloy, an RE element is preferred, wherein Ce and Le account for over 50% of total content, so that the electric property of the alloy can be significantly improved by rare earth. The rare earth disclosed by the invention also can play a role of improving the bending fatigue resistance of the alloy, and the service life of the cable is prolonged. Ce and La are preferred due to the fact that the improvement effects of Ce and La elements in the Al-Fe-Cu-Mg aluminum alloy are more significant as compared with other rare earth elements.
Description
Technical field
The present invention relates to non-ferrous metal field, is exactly the midium voltage cable of a kind of Al-Fe-Cu-Mg aluminium alloy and manufacture thereof.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry, is used widely.Along with the develop rapidly of science and technology and industrial economy, the demand of aluminium alloy is increasing, and the research of aluminium alloy also thereupon deeply.The widespread use of aluminium alloy has promoted the development of aluminium alloy in power industry, and the Application Areas of aluminium alloy has been expanded again in the development of power industry simultaneously.
Power cable is that its basic structure is comprised of core, insulation layer, screen layer and protective layer four parts for carrying and distribute the resource of electric energy.Wherein, core is the current-carrying part of power cable, is used for transmission of electric energy, and it is the major portion of power cable; Insulation layer will be isolated from each other at electric equipment compartment between core and the earth and out of phase core, guarantees power delivery, and it is indispensable integral part in power cable structure; Protective layer is that protection power cable is avoided the intrusion of introduced contaminants and moisture, and prevents that external force from directly damaging power cable.Because copper has good electroconductibility, copper is widely used in the core of power cable.But along with the scarcity day by day of copper resource, and the content of aluminium is very abundant, has received investigator's concern with aluminium substitution copper, so aluminium alloy becomes the focus of research as cable conductor.
Aluminium alloy power cable substitutes copper cable becomes a kind of trend gradually, and is widely applied.Aluminum alloy materials of the prior art, comparatively excellent at aspects such as electrical property, corrosion resistance nature and mechanical propertys, but aspect antifatigue and high temperature creep property or poor, thereby easily there are quality problems, affect the work-ing life of aluminum alloy materials or bring potential safety hazard, therefore, aluminium alloy power cable over-all properties is still poor.
As the alloy that patent documentation 1,2,3 etc. is enumerated, although the ductility of aluminium alloy is improved, anti-fatigue performance does not improve, although and also mentioned creep-resistant property and be improved, the specific targets of improving are not clear and definite.
The alloy that and for example patent documentation 4 is enumerated, anti-fatigue performance and creep-resistant property are improved, and particularly anti-fatigue performance is significantly improved, but creep-resistant property improves concrete technique effect, does not also have.
The alloy that and for example patent documentation 5 is enumerated, although creep-resistant property has obtained remarkable improvement, does not well embody the effect of improvement in ductility and anti-fatigue performance, thereby Shortcomings still.
The alloy that and for example Japanese documentation 6 is enumerated, is being improved, and is having good proof stress and impact resistance, but anti-fatigue performance and creep-resistant property is not improved aspect intensity and ductility.
Prior art document
Patent documentation 1: application publication number: CN 101525709 A
Patent documentation 2: application publication number: CN 101914708 A
Patent documentation 3: application publication number: CN 102222546 A
Patent documentation 4: application publication number: CN 103103390 A
Patent documentation 5: application publication number: CN 102360624 A
Patent documentation 6: application publication number: CN 102119233 A
Summary of the invention
The object of the present invention is to provide a kind of over-all properties preferably for the midium voltage cable of midium voltage cable Al-Fe-Cu-Mg aluminium alloy and manufacture thereof.
Above-mentioned purpose realizes by following scheme:
The invention provides a kind of Al-Fe-Cu-Mg aluminium alloy, comprising:
Fe, content is 0.6～0.8wt%,
Cu+Mg, content is 0.005～0.1wt%,
Si, content is 0～0.1wt%,
B, content is 0～0.3wt%,
Surplus is Al and impurity.
Wherein, described aluminium alloy forms aluminium alloy rod by melting, casting, rolling,, annealing stranded through drawing, pressing forms aluminium alloy core again, conductor thread core forms cable conductor core by three-layer co-extruded mode extruded insulation, cable conductor core by wrapped copper strips, stranding, extrude sheath and form midium voltage cable of the present invention.
Wherein, described aluminium alloy resistance rate is not more than 0.02800 Ω mm
2/ m, elongation at break is not less than 10%, and under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 3 * 10
-2(%/h) or lower, and tired bending number of times reach 30 or higher.
Preferably, in described aluminium alloy, the content of Si is no more than 0.1wt%;
Preferably, in described aluminium alloy, also contain the B that content is no more than 0.3wt%;
Preferably, also contain the RE of 0.1-0.3wt% in described aluminium alloy, wherein Ce, La account for the more than 50% of total amount of rare earth.
Aluminium alloy manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Mg ingot or pure metal ingot to process;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cast in the temperature below 680 ℃;
D) by step c) ingot casting that obtains carries out solution treatment and ageing treatment, and reroll and make rod of metal alloy.
Preferably, aluminium alloy manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Mg ingot, Al-B ingot or pure metal ingot to process;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cast in the temperature below 680 ℃;
D) by step c) ingot casting that obtains carries out solution treatment and ageing treatment, and reroll and make rod of metal alloy.
Preferred, aluminium alloy manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Mg ingot, Al-B ingot, Al-RE ingot or pure metal ingot to process;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cast in the temperature below 680 ℃;
D) by step c) ingot casting that obtains carries out solution treatment and ageing treatment, and reroll and make rod of metal alloy.
Preferably, described steps d) described ingot casting solution treatment and aging temperature is respectively 480～600 ℃, 350～450 ℃.
Aluminium alloy midium voltage cable manufacture method of the present invention comprises the following steps:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2.0mm through cold-drawn wire drawing;
B) conductive monofilament is 50mm through the stranded formation cross-sectional area of overcompaction
2～2000mm
2conductor wire core;
C) lead midium voltage cable core anneal 3～4.5h in vacuum environment or protection of inert gas environment;
D) the midium voltage cable core of leading after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulation layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.。
Preferably, described step c) described annealing temperature is 250 ℃～350 ℃.
Preferably, described steps d) described insulation layer adopts low-smoke non-halogen flame-retardant cross-linking polyethylene materials.
Preferably, described step e) described sheath material adopts 105 ℃ of low-smoke halide-free fireproof composite polyolefine materials.
Through the prepared midium voltage cable of above-mentioned steps, in safe working temperature, be-40 ℃～90 ℃, can reach 61.5%IACS or higher electric conductivity.In high conductivity, aluminium alloy midium voltage cable of the present invention has better flexible curved performance, in safety, installs under prerequisite, and the minimum bending radius of midium voltage cable of the present invention is the midium voltage cable radius of 7 times, installs and uses more for convenience.
The electric energy that can be used for 6kV～35kV through the prepared cable of above-mentioned steps transmits.
Aluminium alloy midium voltage cable of the present invention can reach and be not less than 78% of same cross-sectional copper cable at 90 ℃ of long-time running current capacities.
Beneficial effect of the present invention is:
The preferred Fe of the present invention, Cu, Mg, B, RE are as the interpolation element of alloy, by adding Fe element, can improve physical strength and the tensile property of alloy, creep-resistant property when Fe can significantly improve conductor high temperature in alloy, and carry heavy alloyed anti-fatigue performance, adding of Cu, Mg can be carried heavy alloyed intensity and high temperature creep property, and can improve anti-fatigue performance.In alloy, add B can obviously improve the cold-forming property of aluminium alloy, aluminium alloy rod of the present invention can stress not concentrated and occur that erosion point even ruptures in the cold-drawn course of processing, after wire drawing, aluminium alloy single filament diameter minimum can reach 0.3mm.The present invention has done restriction to the content of Si, is because too much Si can cause tensile property to reduce, and have influence on the processing characteristics of cable, and may reduce the tired bending property of conductor, and too much Si also can reduce electrical property.The present invention is preferred RE element also, wherein Ce, La account in RE total content more than 50%, rare earth can significantly improve the electrical property of alloy, middle-weight rare earths of the present invention can also play the effect that improves the tired bending property of Alloy Anti, extended the work-ing life of cable, preferably Ce and La, be because these two kinds of elements in the present invention effect compared with other rare earth elements, to improve effect more obvious.Simultaneously aluminum alloy materials by melting, casting, solid solution and ageing treatment, rolling technology after, make alloy there is 61.5%IACS or higher electric conductivity, elongation at break is not less than 30%, and under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 3 * 10
-2(%/h) or lower, and tired bending number of times reach 30 or higher.
Embodiment
Specific embodiment
Embodiment 1
An Al-Fe-Cu-Mg aluminium alloy, wherein component and component concentration are as shown in the table
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 800 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 650 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 50mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 4.5h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02790 Ω mm
2/ m, elongation at break is 12%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 2.9 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 31 times, and the electric wire current capacity making is with 78.1% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, use the metal screen layer of copper strips sealing outward, thereby effectively reduce the electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 2
An Al-Fe-Cu-Mg aluminium alloy, wherein component and component concentration are as shown in the table
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 780 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 650 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 480 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 300 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 200mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 4.5h at 350 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02786 Ω mm
2/ m, elongation at break is 11%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 2.7 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 32 times, and the electric wire current capacity making is with 78.5% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, uses the metal screen layer of copper strips sealing outward, thereby effectively reduces
Electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 3
An Al-Fe-Cu-Mg aluminium alloy, wherein component and component concentration are as shown in the table
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 850 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 650 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 200mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 3.5h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02788 Ω mm
2/ m, elongation at break is 12%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 2.9 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 35 times, and the electric wire current capacity making is with 78.4% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, use the metal screen layer of copper strips sealing outward, thereby effectively reduce the electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 4
An Al-Fe-Cu-Mg aluminium alloy, wherein component and component concentration are as shown in the table
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 820 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 660 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 500mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 4h at 270 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02736 Ω mm
2/ m, elongation at break is 12%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 2.2 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 34 times, and the electric wire current capacity making is with 79.8% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, uses the metal screen layer of copper strips sealing outward, thereby effectively reduces
Electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 5
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 800 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 850 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 645 ℃ by constant temperature diversion trench (635 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 5 hours be incubated 3 hours under 550 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 1000mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 3.5h at 270 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02693 Ω mm
2/ m, elongation at break is 15%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 1.8 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 34 times, and the electric wire current capacity making is with 80.6% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, uses the metal screen layer of copper strips sealing outward, thereby effectively reduces
Electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 6
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 760 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 660 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 1500mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 5h at 350 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02689 Ω mm
2/ m, elongation at break is 12%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 2.0 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 33 times, and the electric wire current capacity making is with 80.9% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, uses the metal screen layer of copper strips sealing outward, thereby effectively reduces
Electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Embodiment 7
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 800 ℃ of constant temperature cupola furnace, add according to the above ratio various components to carry out melting;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, and employing high-temperature alloy steel double leaf agitator stirs 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 800 ℃ of standing insulations 30 minutes;
C) aluminium alloy is cooled to 660 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) by step c) cast bar that obtains is cooled to 400 ℃ and continues insulation 5 hours be incubated 3 hours under 500 ℃ of conditions after;
When e) above-mentioned steps d) the middle cast bar being incubated after processing finishes is cooled to 280 ℃ naturally, be at once pressed into aluminium alloy rod, obtain.
Wherein, to add the virgin metal ingot that carries out melting in cupola furnace in a) can be aluminum alloy ingot or pure metal ingot to above-mentioned steps.
The step of being manufactured described aluminium alloy midium voltage cable by above-mentioned aluminium alloy rod is as follows:
A) aluminium alloy rod of the present invention becomes diameter to be not less than the conductive monofilament of 2mm through cold-drawn wire drawing;
B) conductive monofilament is 2000mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) conductor wire core anneal 5h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) conductor wire core after anneal forms cable conductor core by three-layer co-extruded Semi-shielded insulated compound layer outward.
E) cable conductor core again by wrapped copper strip shielding layer, filling, stranding, extrude sheath and obtain described midium voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the midium voltage cable of its manufacture: aluminium alloy resistance rate is 0.02681 Ω mm
2/ m, elongation at break is 15%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 1.9 * 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 36 times, and the electric wire current capacity making is with 81.5% of cross section copper.
Cable has structurally adopted the three-layer co-extruded composite insulation structure of semi-conductive shielding material-insulating material-semi-conductive shielding material, and at cable core, use the metal screen layer of copper strips sealing outward, thereby effectively reduce the electromagnetic consumable in delivery of electrical energy process.The construction of cable of the present invention can be realized in the place of electromagnetic field complexity other delivery of electrical energy of medium pressure grade stable, low consumption.
Claims (9)
1. an Al-Fe-Cu-Mg aluminium alloy, is characterized in that, comprising:
Fe, content is 0.6 ~ 0.8wt%,
Cu+Mg, content is 0.005 ~ 0.1wt%,
Si, content is 0 ~ 0.1wt%,
B, content is 0 ~ 0.3wt%,
Surplus is Al and impurity;
Wherein, described aluminium alloy resistance rate is not more than 0.02800 Ω mm
2/ m, elongation at break is not less than 10%, and tensile strength is not less than 200MPa, and under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1 ~ 100 hour is 3 * 10
-2(%/h) or lower, and tired bending number of times reach 30 or higher.
2. Al-Fe-Cu-Mg aluminium alloy according to claim 1, is characterized in that also containing in aluminium alloy the RE of 0.1-0.3wt%, and wherein Ce, La account for the more than 50% of total amount of rare earth.
3. the midium voltage cable that Al-Fe-Cu-Mg aluminium alloy as claimed in claim 1 or 2 is manufactured, it is characterized in that: preparation method is: alloy is formed to aluminium alloy rod by melting, casting, rolling, again through drawing, press the stranded aluminium alloy core that forms, conductor thread core more successively by three-layer co-extruded, stranding, extrude sheath and obtain described aluminium alloy cable.
4. the midium voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 3 is manufactured, it is characterized in that aluminium alloy core adopts oppositely presses lay configuration.
5. the midium voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 4 is manufactured, is characterized in that the coefficient that presses of aluminium alloy core is 0.93 or larger.
6. the midium voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 3 is manufactured, is characterized in that sheath material adopts low-smoke halide-free fireproof composite polyolefine material.
7. the midium voltage cable of manufacturing according to the Al-Fe-Cu-Mg aluminium alloy described in claim 3 or 6, the minimum bending radius that it is characterized in that this electric wire is 7 times of outside diameters of cable.
8. the midium voltage cable that the Al-Fe-Cu-Mg aluminium alloy described in cable is manufactured according to Claim 8, is characterized in that, described aluminium alloy cable adopts copper-aluminum transition terminal, aciculiform transition terminal or copper to aluminum adapter bar while being connected with cable installation.
9. the midium voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 8 is manufactured, is characterized in that this aluminium alloy electric can be used for the delivery of electrical energy of 6kV-35kV.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294089A (en) * | 2014-09-15 | 2015-01-21 | 林泽民 | Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable |
| CN105671369A (en) * | 2014-11-21 | 2016-06-15 | 富阳科信经济信息咨询有限公司 | Production process for alloy round aluminum rod |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512221A (en) * | 1969-04-07 | 1970-05-19 | Southwire Co | Aluminum alloy wire |
| CN101604563A (en) * | 2009-06-04 | 2009-12-16 | 郑州电缆有限公司 | A kind of manufacture method of heat-resistant aluminum alloy wire of power cable |
| CN102119233A (en) * | 2008-08-11 | 2011-07-06 | 住友电气工业株式会社 | Aluminum alloy wire |
| CN102163478A (en) * | 2011-03-15 | 2011-08-24 | 安徽欣意电缆有限公司 | Pressing and stranding method for wire core of aluminum alloy conductor |
| CN102242296A (en) * | 2011-07-07 | 2011-11-16 | 安徽欣意电缆有限公司 | Aluminum alloy material for metal linkage armored cable |
| CN102978458A (en) * | 2012-11-09 | 2013-03-20 | 安徽欣意电缆有限公司 | Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof |
| CN103035332A (en) * | 2012-12-20 | 2013-04-10 | 四川鑫电电缆有限公司 | Aluminum-alloy conductor environmental-friendly flame-retardant cable |
-
2013
- 2013-12-26 CN CN201310733065.2A patent/CN103725927A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512221A (en) * | 1969-04-07 | 1970-05-19 | Southwire Co | Aluminum alloy wire |
| CN102119233A (en) * | 2008-08-11 | 2011-07-06 | 住友电气工业株式会社 | Aluminum alloy wire |
| CN101604563A (en) * | 2009-06-04 | 2009-12-16 | 郑州电缆有限公司 | A kind of manufacture method of heat-resistant aluminum alloy wire of power cable |
| CN102163478A (en) * | 2011-03-15 | 2011-08-24 | 安徽欣意电缆有限公司 | Pressing and stranding method for wire core of aluminum alloy conductor |
| CN102242296A (en) * | 2011-07-07 | 2011-11-16 | 安徽欣意电缆有限公司 | Aluminum alloy material for metal linkage armored cable |
| CN102978458A (en) * | 2012-11-09 | 2013-03-20 | 安徽欣意电缆有限公司 | Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof |
| CN103035332A (en) * | 2012-12-20 | 2013-04-10 | 四川鑫电电缆有限公司 | Aluminum-alloy conductor environmental-friendly flame-retardant cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294089A (en) * | 2014-09-15 | 2015-01-21 | 林泽民 | Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable |
| CN105671369A (en) * | 2014-11-21 | 2016-06-15 | 富阳科信经济信息咨询有限公司 | Production process for alloy round aluminum rod |
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Application publication date: 20140416 |