CN103757485A - Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy - Google Patents
Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy Download PDFInfo
- Publication number
- CN103757485A CN103757485A CN201310733044.0A CN201310733044A CN103757485A CN 103757485 A CN103757485 A CN 103757485A CN 201310733044 A CN201310733044 A CN 201310733044A CN 103757485 A CN103757485 A CN 103757485A
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- low
- cable
- voltage cable
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses an Al-Fe-Cu-Mg aluminum alloy. According to the Al-Fe-Cu-Mg aluminum alloy, an Fe element is added so that the mechanical strength and the tensile performance of the alloy can be improved; Fe can also obviously improve the high-temperature creep resistance and improve the anti-fatigue performance of the alloy; Cu and Mg are added so as to improve the strength and the high-temperature creep resistance of the alloy and improve the anti-fatigue performance; B is added into the alloy so that the cold machining performance of the aluminum alloy can be obviously improved and an aluminum alloy rod provided by the invention does not have a corrosion point due to intensive stress in a cold drawing machining process and is not cracked; the diameter of a drawn aluminum alloy conductor single wire can be up to 0.3mm. According to the Al-Fe-Cu-Mg aluminum alloy, the content of Si is limited; the excessive Si can reduce the tensile performance to influence the machining performance of the cable and the fatigue bending performance of a conductor may be reduced; the excessive Si can also reduce the electric performance.
Description
Technical field
The present invention relates to non-ferrous metal technical field, relate in particular to the low-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 the resource for carrying and distribute electric energy, and its basic structure is comprised of core, insulation layer, screen layer and protective layer four parts.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, and therefore 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 conductor material 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 at 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: CN101525709A
Patent documentation 2: application publication number: CN101914708A
Patent documentation 3: application publication number: CN102222546A
Patent documentation 4: application publication number: CN103103390A
Patent documentation 5: application publication number: CN102360624A
Patent documentation 6: application publication number: CN102119233A
Summary of the invention
The technical problem that the present invention solves is to provide a kind of over-all properties preferably for a kind of Al-Fe-Cu-Mg aluminium alloy of low-voltage cable and the low-voltage cable of manufacture thereof.
A kind of Al-Fe-Cu-Mg aluminium alloy, comprising:
Fe, content is 0.4～0.6wt%,
Cu+Mg, content is 0.1～0.3wt%,
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
25%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is
5 × 10
-2%/h or lower, and tired bending number of times reaches 30 or higher.
The RE that also contains 0.1-0.3wt% in Al-Fe-Cu-Mg aluminium alloy, wherein Ce, La account for the more than 50% of total amount of rare earth.
The preparation method of the low-voltage cable of Al-Fe-Cu-Mg aluminium alloy manufacture is: described Al-Fe-Cu-Mg alloy is formed to aluminium alloy rod by melting, casting, rolling, through drawing, press stranded, tempering, form aluminium alloy conductor core again, conductor thread core more successively by extruded insulation, stranding, extrude sheath and obtain described aluminium alloy low-voltage cable.
Al-Fe-Cu-Mg aluminium alloy conductor core adopts and oppositely presses lay configuration.
The coefficient that presses of the aluminium alloy conductor core of the low-voltage cable of Al-Fe-Cu-Mg aluminium alloy manufacture is 0.93 or larger.
The insulation of the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy is manufactured and sheath material adopt low-pressure halogen-free flame-retardant polyolefine material.
The outer wrapped one deck fire-resistant isinglass belt of conductor thread core of the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy is manufactured.
The minimum bending radius of the low-voltage cable of the low-voltage cable of Al-Fe-Cu-Mg aluminium alloy manufacture is 6 times of outside diameters of cable.
The low-voltage cable of Al-Fe-Cu-Mg aluminium alloy manufacture adopts copper-aluminum transition terminal, aciculiform transition terminal or copper to aluminum adapter bar while being connected with cable installation.
Al-Fe-Cu-Mg aluminium alloy manufacture low-voltage cable, this aluminium alloy electric can be used for the delivery of electrical energy below 3kV.
Aluminium alloy conductor manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting processing at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Mg ingot or pure metal ingot;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, adopts high-temperature alloy steel double leaf agitator to stir 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) temperature of aluminium alloy below 680 ℃ cast;
D) ingot casting step c) being obtained carries out solution treatment and ageing treatment, rerolls and makes rod of metal alloy.
Preferably, aluminium alloy conductor manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting processing at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Cu ingot, Al-Mg ingot, Al-B ingot or pure metal ingot;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, adopts high-temperature alloy steel double leaf agitator to stir 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) temperature of aluminium alloy below 680 ℃ cast;
D) ingot casting step c) being obtained carries out solution treatment and ageing treatment, rerolls and makes rod of metal alloy.
Preferred, aluminium alloy conductor manufacture method of the present invention comprises the following steps:
A) by formula rate, add the melting processing 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;
B) molten metal after melting adds in proportion refining agent in 750 ℃ of holding furnaces, adopts high-temperature alloy steel double leaf agitator to stir 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 820 ℃ of standing insulations 30 minutes;
C) temperature of aluminium alloy below 680 ℃ cast;
D) ingot casting step c) being obtained carries out solution treatment and ageing treatment, rerolls and makes rod of metal alloy.
Preferably, described steps d) described ingot casting solution treatment and aging temperature be respectively 480～600 ℃, 350～450 ℃.
Aluminium alloy low-voltage cable manufacture method of the present invention comprises the following steps:
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;
Conductive monofilament is 10mm through the stranded formation cross-sectional area of overcompaction
2～1000mm
2conductor wire core;
Lead low tension cable core anneal 3～5h in vacuum environment or protection of inert gas environment;
After anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward.
Cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
Preferably, described step c) described annealing temperature be 250 ℃～300 ℃.
Preferably, described steps d) described 105 ℃ of low-smoke halide-free fireproof composite polyolefine materials of insulation layer employing.
Through the prepared low-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 low-voltage cable of the present invention has better flexible curved performance, in safety, installs under prerequisite, and the minimum bending radius of low-voltage cable of the present invention is the low-voltage cable radius of 6 times, installs and uses more for convenience.
Through the prepared cable of above-mentioned steps, can be used for the electric energy transmission below 3kV.
Aluminium alloy low-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 conductor filament diameter 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 25%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 5 × 10-2(%/h) or lower, and tired bending number of times reaches 30 or higher.
Embodiment
Embodiment 1
A kind of 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, adopts high-temperature alloy steel double leaf agitator to stir 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) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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 10mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) lead low tension cable core anneal 3h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02796 Ω mm
2/ m, elongation at break is 26%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 4.8 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 31 times, and the electric wire current capacity making is 78.1% of same cross section copper.
Embodiment 2
A kind of 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 810 ℃ 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, adopts high-temperature alloy steel double leaf agitator to stir 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) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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) lead low tension cable core anneal 3.5h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02786 Ω mm
2/ m, elongation at break is 25%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 4.9 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 31 times, and the electric wire current capacity making is 78.3% of same cross section copper.
Embodiment 3
A kind of 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 790 ℃ 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, adopts high-temperature alloy steel double leaf agitator to stir 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 645 ℃ by constant temperature diversion trench (635 ℃ of design temperatures) and enters casting chamber after following and cast;
D) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 550 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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) lead low tension cable core anneal 3h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02766 Ω mm
2/ m, elongation at break is 26%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 4.4 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 33 times, and the electric wire current capacity making is 78.6% of same cross section copper.
Embodiment 4
A kind of 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, adopts high-temperature alloy steel double leaf agitator to stir 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 655 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) cast bar step c) being obtained is cooled to 450 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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 400mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) lead low tension cable core anneal 4h at 300 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02775 Ω mm
2/ m, elongation at break is 26%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 3.9 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 34 times, and the electric wire current capacity making is 79.8% of same cross section copper.
Embodiment 5
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 830 ℃ 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, adopts high-temperature alloy steel double leaf agitator to stir 10 minutes with the speed of 20 revs/min, after stirring finishes, is warming up to 840 ℃ 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) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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 600mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) lead low tension cable core anneal 4h at 320 ℃ of temperature in vacuum environment or protection of inert gas environment; D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02727 Ω mm
2/ m, elongation at break is 26%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 4.2 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 36 times, and the electric wire current capacity making is 80.6% of same cross section copper.
Embodiment 6
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, adopts high-temperature alloy steel double leaf agitator to stir 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 655 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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 750mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) lead low tension cable core anneal 4.5h at 350 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02689 Ω mm
2/ m, elongation at break is 30%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 3.6 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 31 times, and the electric wire current capacity making is 82.0% of same cross section copper.
Embodiment 7
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 750 ℃ 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 740 ℃ of holding furnaces, adopts high-temperature alloy steel double leaf agitator to stir 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 650 ℃ by constant temperature diversion trench (645 ℃ of design temperatures) and enters casting chamber after following and cast;
D) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4.5 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 295 ℃, 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 low-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 900mm through overcompaction stranded (stranded coefficient>=0.93) formation cross-sectional area
2conductor wire core;
C) lead low tension cable core anneal 5h at 350 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02690 Ω mm
2/ m, elongation at break is 28%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 4.8 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 34 times, and the electric wire current capacity making is 81.2% of same cross section copper.
Embodiment 8
Utilize above-mentioned aluminium alloy formula to prepare the concrete grammar of aluminum-alloy conductor material as follows:
A) in 840 ℃ 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, adopts high-temperature alloy steel double leaf agitator to stir 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) cast bar step c) being obtained is cooled to 400 ℃ and continues insulation 4 hours be incubated 3 hours under 500 ℃ of conditions after;
E) above-mentioned steps d) in the cast bar of insulation processing after finishing be at once pressed into aluminium alloy rod while being naturally cooled to 280 ℃, 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 low-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) lead low tension cable core anneal 5h at 330 ℃ of temperature in vacuum environment or protection of inert gas environment;
D) after anneal, lead low tension cable core wrapped fire-resistant isinglass belt and extrude a layer insulating and form cable conductor core successively outward;
E) cable conductor core again by filling, wrapped, stranding, extrude sheath and obtain described low-voltage cable.
The aluminium alloy conductor of manufacturing by above-mentioned steps method and as follows by the performance perameter of the low-voltage cable of its manufacture: aluminium alloy resistance rate is 0.02673 Ω mm
2/ m, elongation at break is 31%, under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100 hour is 3.6 × 10
-2(%/h), 90 ° of antifatigue bending number of times of cable monofilament are 34 times, and the electric wire current capacity making is 83.2% of same cross section copper.
Claims (10)
1. an Al-Fe-Cu-Mg aluminium alloy, is characterized in that, comprising:
Fe, content is 0.4 ~ 0.6wt%,
Cu+Mg, content is 0.1 ~ 0.3wt%,
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 25%, and under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1 ~ 100 hour is 5 × 10
-2%/h or lower, and tired bending number of times reaches 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 low-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: described Al-Fe-Cu-Mg alloy is formed to aluminium alloy rod by melting, casting, rolling, through drawing, press stranded, tempering, form aluminium alloy conductor core again, conductor thread core more successively by extruded insulation, stranding, extrude sheath and obtain described aluminium alloy low-voltage cable.
4. the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 3 is manufactured, it is characterized in that aluminium alloy conductor core adopts oppositely presses lay configuration.
5. the low-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 conductor core is 0.93 or larger.
6. the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 3 is manufactured, is characterized in that insulation and sheath material adopt low-pressure halogen-free flame-retardant polyolefine material.
7. the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 6 is manufactured, is characterized in that the outer wrapped one deck fire-resistant isinglass belt of conductor thread core.
8. the low-voltage cable of manufacturing according to the Al-Fe-Cu-Mg aluminium alloy described in claim 3 or 6 or 7, the minimum bending radius that it is characterized in that this low-voltage cable is 6 times of outside diameters of cable.
9. the low-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.
10. the low-voltage cable that Al-Fe-Cu-Mg aluminium alloy according to claim 8 is manufactured, is characterized in that this aluminium alloy cable can be used for the delivery of electrical energy below 3kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733044.0A CN103757485A (en) | 2013-12-26 | 2013-12-26 | Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733044.0A CN103757485A (en) | 2013-12-26 | 2013-12-26 | Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103757485A true CN103757485A (en) | 2014-04-30 |
Family
ID=50524799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733044.0A Pending CN103757485A (en) | 2013-12-26 | 2013-12-26 | Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103757485A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294114A (en) * | 2014-09-15 | 2015-01-21 | 安徽欣意电缆有限公司 | Al-Fe-Mg-Mn series aluminum alloy for cables for coal mines and aluminum alloy cable |
| CN104561678A (en) * | 2015-02-02 | 2015-04-29 | 河北欣意电缆有限公司 | Boron-containing high-iron aluminum alloy material and preparation method thereof |
| CN106702219A (en) * | 2016-11-24 | 2017-05-24 | 中色科技股份有限公司 | Creep-resistant aluminum alloy conductor and preparing method thereof for cable or cable connector |
| CN113921164A (en) * | 2021-10-12 | 2022-01-11 | 安徽阿尔泰克铝业材料科技有限公司 | High-strength aluminum alloy five-class conductor for wind power torsion-resistant cable and preparation method thereof |
| CN117410006A (en) * | 2023-07-10 | 2024-01-16 | 特变电工山东鲁能泰山电缆有限公司 | Aluminum alloy rod for cable, aluminum alloy flexible cable for offshore wind power generation and production process of aluminum alloy flexible cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512221A (en) * | 1969-04-07 | 1970-05-19 | Southwire Co | Aluminum alloy wire |
| JPS5245514A (en) * | 1975-08-01 | 1977-04-11 | Sumitomo Electric Ind Ltd | Production process of electric conductor made of aluminium alloy |
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
| CN102222546A (en) * | 2011-06-24 | 2011-10-19 | 航天电工技术有限公司 | Interlocking type armored optical fiber composite low-voltage cable of creep-resistant aluminum alloy conductor |
| CN102683919A (en) * | 2012-05-21 | 2012-09-19 | 航天电工技术有限公司 | Creep-resistant aluminum alloy copper-aluminum transition terminal and preparation method thereof |
-
2013
- 2013-12-26 CN CN201310733044.0A patent/CN103757485A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512221A (en) * | 1969-04-07 | 1970-05-19 | Southwire Co | Aluminum alloy wire |
| JPS5245514A (en) * | 1975-08-01 | 1977-04-11 | Sumitomo Electric Ind Ltd | Production process of electric conductor made of aluminium alloy |
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
| CN102222546A (en) * | 2011-06-24 | 2011-10-19 | 航天电工技术有限公司 | Interlocking type armored optical fiber composite low-voltage cable of creep-resistant aluminum alloy conductor |
| CN102683919A (en) * | 2012-05-21 | 2012-09-19 | 航天电工技术有限公司 | Creep-resistant aluminum alloy copper-aluminum transition terminal and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294114A (en) * | 2014-09-15 | 2015-01-21 | 安徽欣意电缆有限公司 | Al-Fe-Mg-Mn series aluminum alloy for cables for coal mines and aluminum alloy cable |
| CN104561678A (en) * | 2015-02-02 | 2015-04-29 | 河北欣意电缆有限公司 | Boron-containing high-iron aluminum alloy material and preparation method thereof |
| CN106702219A (en) * | 2016-11-24 | 2017-05-24 | 中色科技股份有限公司 | Creep-resistant aluminum alloy conductor and preparing method thereof for cable or cable connector |
| CN113921164A (en) * | 2021-10-12 | 2022-01-11 | 安徽阿尔泰克铝业材料科技有限公司 | High-strength aluminum alloy five-class conductor for wind power torsion-resistant cable and preparation method thereof |
| CN113921164B (en) * | 2021-10-12 | 2024-02-06 | 安徽阿尔泰克铝业材料科技有限公司 | High-strength aluminum alloy five-class conductor for wind power torsion-resistant cable and preparation method thereof |
| CN117410006A (en) * | 2023-07-10 | 2024-01-16 | 特变电工山东鲁能泰山电缆有限公司 | Aluminum alloy rod for cable, aluminum alloy flexible cable for offshore wind power generation and production process of aluminum alloy flexible cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5802722B2 (en) | Aluminum wire for automobile | |
| JP5751268B2 (en) | Copper alloy wire, copper alloy stranded wire, covered wire, and wire with terminal | |
| JP5128109B2 (en) | Electric wire conductor and manufacturing method thereof | |
| WO2015064357A1 (en) | Copper alloy wire, copper alloy stranded wire, coated electric wire, wire harness and manufacturing method of copper alloy wire | |
| WO2010084989A1 (en) | Electrical wire conductor for wiring, method for producing electrical wire conductor for wiring, electrical wire for wiring, and copper alloy wire | |
| KR20170041164A (en) | Copper alloy wire, stranded copper alloy wire, coated electric wire, and terminal-equipped electric wire | |
| US20170040081A1 (en) | Copper alloy element wire, copper alloy stranded wire, and automotive electric wire | |
| CN103757485A (en) | Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy | |
| CN103757489A (en) | Al-Fe-Cu-Ti aluminum alloy for automotive wire and wiring harness thereof | |
| CN104294091A (en) | Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable | |
| WO2012057348A1 (en) | Electric Wire or Cable | |
| JP5228118B2 (en) | Method for producing aluminum alloy conductor | |
| CN103730185A (en) | Al-Fe-Cu-Mg aluminum alloy and electric wire made of the same | |
| WO2011071097A1 (en) | Power feed body and method for manufacturing same | |
| CN103725927A (en) | Al-Fe-Cu-Mg aluminum alloy and medium-voltage cable prepared from Al-Fe-Cu-Mg aluminum alloy | |
| CN103667829A (en) | Al-Cu aluminum alloy, preparation method thereof and aluminum alloy cable | |
| CN103757488A (en) | Al-Fe-Mg-Ca aluminum alloy for automobile wire and wire harness thereof | |
| CN103757492A (en) | Al-Fe-Cu-Mg series aluminum alloy for automobile wire and wiring harness | |
| CN103667817A (en) | Al-Mg aluminum alloy, preparation method thereof and aluminum alloy cable | |
| CN103757487A (en) | Al-Fe-Mg-Ni aluminum alloy for automobile wire and wire harness thereof | |
| CN113249623B (en) | Aluminum magnesium alloy wire and method for producing same | |
| JP6135949B2 (en) | Copper alloy wire, copper alloy stranded wire, covered wire, and wire with terminal | |
| CN103757493A (en) | Al-Fe-Cu-Ni aluminum alloy for automotive wire and wire harness thereof | |
| CN103757490A (en) | Al-Fe-Cu-Zn aluminum alloy for automobile wire and wire harness thereof | |
| CN103757496A (en) | Al-Fe-Cu-Mg-Ca aluminum alloy for automotive wire and wiring harness thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |