CN104299671A - Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable - Google Patents
Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable Download PDFInfo
- Publication number
- CN104299671A CN104299671A CN201410469573.9A CN201410469573A CN104299671A CN 104299671 A CN104299671 A CN 104299671A CN 201410469573 A CN201410469573 A CN 201410469573A CN 104299671 A CN104299671 A CN 104299671A
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- cable
- core
- aluminum alloy
- 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
Landscapes
- Conductive Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses Al-Fe-Mg-Zr aluminum alloy for a coal mine cable and an aluminum alloy cable. Aluminum alloy materials comprise, by weight, 0.2% to 1.1% of Fe, 0.01% to 0.4% of Mg, 0.001% to 0.2% of Zr, 0% to 0.1% of Si, 0% to 0.2% of B, and the balance of Al and impurities. The aluminum alloy materials are processed through the smelting technology, the casting technology and the rolling technology so that an aluminum alloy rod can be obtained, then, the aluminum alloy rod is drawn, bunched into strands and softened so that an aluminum alloy cable core can be obtained, and next, the conductor cable core is subjected to extruded insulation, cabling and extruded jacketing or armoring so that the aluminum alloy cable can be made. The Al-Fe-Mg-Zr aluminum alloy for the coal mine cable has the advantages of being high in strength and electric conductivity, good in bending property and the like. The aluminum alloy cable made from the aluminum alloy can meet the requirements for the performance of the cable in the coal mine field.
Description
Technical field
The present invention relates to coal mine cable technical field, be specifically related to a kind of coal mine cable Al-Fe-Mg-Zr line aluminium alloy and aluminium alloy cable.
Background technology
Coal Electricity cable due to circumstance complication, the condition of work used severe and mobile frequent, useful life is not long, the region of methane accumulation is very dangerous again, therefore not only very high to the security requirement of cable own, and very high to the resistance to wear of frequent moving field all-in-one cable, anti-external tensile force performance requirement.Therefore, Coal Electricity cable belongs to the higher product of technology content in cable industry.
Common cable adopts copper conductor, along with the exhaustive exploitation to copper resource, and copper resource growing tension, and be on the verge of scarcity, therefore need the wire using other materials to replace copper conductor, the demand in market could be met.In metal material, aluminium has that conductive effect is good, light weight, the characteristic such as cheap, and in recent years, for the reinforcement of environmental consciousness, strongly needs weight reduction to improve machine fuel utilance, therefore, replaces copper core cable to be trend of the times with aluminium cable.In prior art, develop aluminium cable, but the defect such as common aluminium cable exists mechanical performance and corrosion resistance is poor, do not possess the good bending property meeting the frequent movement of Coal Electricity cable; And according to the adverse circumstances of Coal Electricity cable, have higher requirement to the conductance of cable conductor and mechanical strength, and the conductance of existing common aluminium cable and mechanical strength properties can not meet the requirement of Coal Electricity cable.Therefore, develop and a kind ofly can meet the aluminium alloy cable of instructions for use in coal mining there are very wide market prospects.
Summary of the invention
The object of the invention is to overcome above shortcoming, a kind of coal mine cable Al-Fe-Mg-Zr line aluminium alloy and aluminium alloy cable are provided, this aluminium alloy has the characteristics such as high strength, high conductivity, bending property be good, and the aluminium alloy cable be made up of this aluminium alloy can meet the requirement to cable performance in field, colliery.
Technical scheme of the present invention is:
A kind of coal mine cable Al-Fe-Mg-Zr line aluminium alloy, the percentage by weight of the component comprised and each component is as follows:
Fe：0.2-1.1％；
Mg：0.01-0.4％；
Zr：0.001-0.2％；
Si：0-0.1％；
B：0-0.2％；
Surplus is Al and impurity;
The resistivity of described aluminium alloy is less than or equal to 0.028264 Ω mm
2/ m, conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and 90 degree of tired bending number of times are more than or equal to 30 times.
Further, described aluminium alloy also comprises rare earth element, and the content of described rare earth element accounts for the 0.1-0.3% of al alloy component total weight.
Further, described rare earth element comprises Ce, La, and described Ce and La accounts at least 50% of rare earth element total amount.
Further, described aluminium alloy is under temperature 120 DEG C, compression 120MPa condition, and the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h).
A kind of colliery aluminium alloy cable, the processing technology of described aluminium alloy cable comprises the steps:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
Further, the filament tow that described aluminium alloy conductor core is respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and described monofilament is obtained through drawing by described aluminium alloy rod.
Further, described aluminium alloy cable is applicable to the Minepit environment of-40 DEG C-90 DEG C.
Further, described aluminium alloy cable is applicable to the coal mine moving class rubber sleeve flexible cable of rated voltage 8.7/10kV and following grade.
Further, described aluminium alloy cable is in 90 DEG C of long-time running situations, and ampacity is not less than 80% of same cross-sectional copper cable.
Further, described aluminium alloy cable not short circuit after 9000 counter-bending tests, not open circuit.
Coal mine cable Al-Fe-Mg-Zr line aluminium alloy provided by the invention and aluminium alloy cable, tool has the following advantages:
1, colliery provided by the invention aluminium alloy, is optimized the element of aluminium alloy, thus improves the performance of this aluminium alloy.Colliery provided by the invention aluminium alloy, select Al-Fe-Mg-Zr series, by adding Fe element, can improve mechanical strength and the tensile property of alloy, Fe can also significantly improve high-temperature creep resistance, and carries heavy alloyed anti-fatigue performance; In aluminium alloy, add a small amount of Mg, refinement cast sturcture can be realized; Zr and Al forms ZrAl3 compound, can hinder recrystallization process, refinement recrystal grain, because Zr is on little than chromium and manganese of the impact of quenching sensitive, therefore should replace chromium and manganese refinement recrystallized structure with zirconium; In addition, Zr also can the antifatigue bending property of remarkable modified alloy, improves the useful life of cable.
Colliery provided by the invention aluminium alloy, select to add a small amount of Si in the alloy, Mg and Si acts on, and forms MgSi hardening constituent, improve recrystallization temperature and change ag(e)ing behavio(u)r, make the recrystal grain of goods be able to further refinement, intensity, toughness are improved, and plasticity, corrosion resistance improve, improve yield strength and the elongation of aluminium alloy, avoid the reprocessing of alloy product, enhance productivity, reduce production cost.Meanwhile, restriction has been done to the content of Si, because too much Si can cause tensile property to reduce, had influence on the processing characteristics of aluminium alloy cable, and the tired bending property of conductor may be reduced, and too much Si also can reduce electrical property.
The present invention also preferably adds a certain amount of B, can improve processing characteristics, particularly the micro-processing characteristics of drawing and restrainting strand aspect of monofilament.
Colliery provided by the invention aluminium alloy, also preferably add a certain amount of rare earth elements RE, wherein Ce, La account at least 50% of rare earth element total content, rare earth element not only can significantly improve the electrical property of alloy, the effect improving the tired bending property of Alloy Anti can also be played, extend the useful life of cable.Preferred Ce and La, be because these two kinds of elements in the present invention effect to improve effect compared with other rare earth elements more obvious.
The present invention, by the content of optimum choice alloying component and Reasonable adjustment alloying component, formulates alloy formula, both can improve the performance of alloy, can not can worsen performance, particularly electrical property and the extension property of alloy again because of too much amount.Aluminum alloy materials provided by the invention, ensures the performance of alloy by rational alloying component proportioning.
Colliery provided by the invention aluminum alloy materials, after melting, casting, solid solution and aging treatment, rolling mill practice, the resistivity of the aluminium alloy obtained is less than or equal to 0.028264 Ω mm
2/ m, conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and under temperature 120 DEG C, 120MPa compression condition, the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h), 90 degree of tired bending number of times are more than or equal to 30 times, and the most I of filament diameter moves 0.2mm to.
2, colliery provided by the invention aluminium alloy cable, be made up of aluminium alloy provided by the invention, the colliery aluminium alloy cable obtained not only has the technical requirement that good electric conductivity, tensile property, creep-resistant property and anti-fatigue performance, particularly bending resistance also reach colliery copper core; Meanwhile, colliery aluminium alloy cable due to pliability good, and weight comparatively copper is gently a lot, thus more convenient to use as coal mine soft cable, effectively reduce the cost of Coal Electricity cable, improve operating efficiency, there is very good technical economic benefit.Colliery provided by the invention aluminium alloy cable, be applicable to coal mine moving class rubber sleeve flexible cable, rated voltage 8.7/10kV and following coal rubber sheathed flexible cable for mine, under 90 DEG C of long-time running conditions, ampacity is not less than 80% of same cross-sectional copper cable; And the not short circuit after 9000 counter-bending tests of colliery provided by the invention aluminium alloy cable, not open circuit, wherein, the test method that 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the present invention, the preparation method of the aluminium alloy conductor core that colliery aluminium alloy cable is used, comprises the following steps:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add the al alloy component mentioned in the present invention in proportion, under 700-800 DEG C of condition, carry out smelting technology, then cast under 650-680 DEG C of condition, obtain ingot casting;
B, ingot casting solution treatment 2-6h within the scope of 460-550 DEG C that step a is obtained, then rapid quenching in the cooling water of 20-100 DEG C;
C, ingot casting Ageing Treatment 6-10h within the scope of 150-250 DEG C that step b is obtained, then be warming up to 300-400 DEG C, be rolled into rod of metal alloy;
D, within the scope of 280-300 DEG C, the rod of metal alloy that step c is rolled into carry out drawing process, make the 50-60% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes the 70-100% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 3-6h under 230-320 DEG C of condition, then under 300-400 DEG C of condition, incite somebody to action heat treatment 8-14h again, obtain aluminium alloy conductor core.
In the preparation method of above-mentioned aluminium alloy conductor core, in casting step, heating should be slow, when adding multiple alloy pig again, should shove charge below 300 DEG C, to ensure foundry goods homogeneous heating, (fusing point close to eutectic) makes alloying element and second-phase be dissolved in matrix by the solid appearance heat treatment of long period at as high temperature as possible, due to incorporating of trace alloying element (B, Si, RE), matrix is made to become sub-saturated state, can significantly put forward heavy alloyed intensity and plasticity by solid appearance process, improve the decay resistance of alloy; Tensile property and pliability that (immersing coolant the time completely no more than 15s, to make foundry goods uniform quenching from foundry goods foundry goods of slinging) improves foundry goods is cooled fast after solid solution; In the timeliness incipient stage, matrix saturation is very large, the hardness of foundry goods can significantly improve, and along with the increase of aging time, the concentration between matrix and precipitate reaches balance, now precipitate precipitation starts slack-off, now through shorter temperature retention time, can grain growth be suppressed, thus obtain the aluminium alloy of less thick essence, obtain the intensity that excellent mechanical property is namely higher thus, good plasticity and toughness; In step f, twice annealing process can the internal stress of aluminium alloy stranded conductor to greatest extent, and the electric property of stable alloy line, stable dimensions reduces distortion, greatly improves draftability and the bendability of alloy wire.
Below the technical scheme for aluminium alloy provided by the invention and aluminium alloy cable is described in detail respectively:
Embodiment 1
A kind of coal mine cable Al-Fe-Mg-Zr line aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 700 DEG C of conditions, carry out smelting technology, then cast under 650 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 3h under 500 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 50 DEG C;
C, ingot casting Ageing Treatment 6h under 150 DEG C of conditions that step b is obtained, then be warming up to 350 DEG C, be rolled into rod of metal alloy;
D, under 280 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 50% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 70% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 3h under 260 DEG C of conditions, then under 300 DEG C of conditions, incite somebody to action heat treatment 8h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-B ingot, Al-Zr in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on the external sheath layer outside cable core, and cable core is twisted formed by power main insulation core, ground connection core, control conductor bundle, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.Central layer is filled out between core layer, and power main insulation core and ground connection core, the concentric stranding of control conductor.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, under 90 DEG C of long-time running conditions, ampacity is not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 2
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
In above-mentioned aluminum alloy materials, be added with a certain amount of Si and rare earth element, Mg and Si acts on, and forms MgSi hardening constituent, improve recrystallization temperature and change ag(e)ing behavio(u)r, make the recrystal grain of goods be able to further refinement, intensity, toughness are improved, and plasticity, corrosion resistance improve, improve yield strength and the elongation of aluminium alloy, avoid the reprocessing of alloy product, enhance productivity, reduce production cost.
Rare earth element not only can significantly improve the electrical property of alloy, can also play the effect improving the tired bending property of Alloy Anti, extend the useful life of cable.Wherein, rare earth elements RE comprises Ce, La and Pr, and wherein, the content of Ce and La accounts for 50% of rare earth element total content.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 780 DEG C of conditions, carry out smelting technology, then cast under 660 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 2h under 460 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 20 DEG C;
C, ingot casting Ageing Treatment 8h under 180 DEG C of conditions that step b is obtained, then be warming up to 300 DEG C, be rolled into rod of metal alloy;
D, under 285 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 55% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 75% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 4h under 230 DEG C of conditions, then under 330 DEG C of conditions, incite somebody to action heat treatment 10h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Si ingot, Al-Zr, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 3
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Wherein, rare earth elements RE comprises Ce, La and Er, and wherein, the content of Ce and La accounts for 60% of rare earth element total content.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 730 DEG C of conditions, carry out smelting technology, then cast under 655 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 4h under 480 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 80 DEG C;
C, ingot casting Ageing Treatment 7h under 200 DEG C of conditions that step b is obtained, then be warming up to 320 DEG C, be rolled into rod of metal alloy;
D, under 290 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 60% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 80% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 5h under 280 DEG C of conditions, then under 370 DEG C of conditions, incite somebody to action heat treatment 12h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Si ingot, Al-B ingot, Al-Zr ingot, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 4
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Wherein, rare earth elements RE is Ce, La.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 760 DEG C of conditions, carry out smelting technology, then cast under 680 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 6h under 520 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 100 DEG C;
C, ingot casting Ageing Treatment 9h under 230 DEG C of conditions that step b is obtained, then be warming up to 370 DEG C, be rolled into rod of metal alloy;
D, under 300 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 58% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 85% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 6h under 320 DEG C of conditions, then under 390 DEG C of conditions, incite somebody to action heat treatment 13h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Si ingot, Al-B ingot, Al-Zr ingot, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 5
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Wherein, rare earth elements RE comprises Ce, La, Pr and Er, and wherein, the content of Ce and La accounts for 70% of rare earth element total content.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 800 DEG C of conditions, carry out smelting technology, then cast under 675 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 5h under 550 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 65 DEG C;
C, ingot casting Ageing Treatment 10h under 195 DEG C of conditions that step b is obtained, then be warming up to 380 DEG C, be rolled into rod of metal alloy;
D, under 293 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 54% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 100% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament; In this step, because aluminium alloy wire sectional area does not reduce, the aluminium alloy conductor monofilament namely obtained is the aluminium alloy wire in steps d;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 6h under 300 DEG C of conditions, then under 400 DEG C of conditions, incite somebody to action heat treatment 14h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Si ingot, Al-B ingot, Al-Zr ingot, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 6
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Wherein, rare earth elements RE is Ce, La.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 756 DEG C of conditions, carry out smelting technology, then cast under 664 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 4h under 530 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 40 DEG C;
C, ingot casting Ageing Treatment 8h under 250 DEG C of conditions that step b is obtained, then be warming up to 400 DEG C, be rolled into rod of metal alloy;
D, under 284 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 56% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 90% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 5h under 275 DEG C of conditions, then under 350 DEG C of conditions, incite somebody to action heat treatment 9h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Si ingot, Al-B ingot, Al-Zr ingot, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 7
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Wherein, rare earth elements RE is Ce, La.
Apply the method that above-mentioned aluminum alloy materials prepares aluminium alloy core, concrete steps are as follows:
A, obtain founding materials by carrying out casting to molten aluminium alloy: add above-mentioned al alloy component according to the above ratio, under 785 DEG C of conditions, carry out smelting technology, then cast under 658 DEG C of conditions, obtain ingot casting;
B, ingot casting solution treatment 6h under 490 DEG C of conditions that step a is obtained, then rapid quenching in the cooling water of 60 DEG C;
C, ingot casting Ageing Treatment 7h under 220 DEG C of conditions that step b is obtained, then be warming up to 360 DEG C, be rolled into rod of metal alloy;
D, under 286 DEG C of conditions, the rod of metal alloy that step c is rolled into carry out drawing process, make 52% of rod of metal alloy sectional area in reduced cross-sectional area to step c, obtain aluminium alloy wire;
E, under the temperature conditions forming aluminium alloy core, aluminium alloy wire steps d obtained again carries out drawings and processes, and makes 78% of aluminium alloy wire sectional area in reduced cross-sectional area to steps d, obtains aluminium alloy conductor monofilament;
F, the aluminium alloy conductor monofilament obtained by some step e are stranded, carry out first time heat treatment 4h under 250 DEG C of conditions, then under 320 DEG C of conditions, incite somebody to action heat treatment 11h again, obtain aluminium alloy core.Wherein, the aluminium alloy conductor filament tow that aluminium alloy core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, in step a, al alloy component adds form and can be: add Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Zr ingot, Al-RE ingot in proportion, or add simple metal ingot.
By above-mentioned aluminium alloy conductor core through extruded insulation, stranding, extrude sheath or colliery aluminium alloy cable made by armouring.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Embodiment 8
A kind of coal mine cable aluminium alloy, the percentage by weight following (total weight: 1T) of component and each component:
Aluminium alloy cable is processed obtained by following processing technology:
A, above-mentioned aluminium alloy is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
The filament tow that above-mentioned aluminium alloy conductor core can be respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and monofilament is obtained through drawing by described aluminium alloy rod.Specifically according to diameter and the quantity of the specification determination aluminium alloy conductor monofilament silk of aluminium alloy cable.
Wherein, aluminium alloy cable comprises cable core and is arranged on external sheath layer outside cable core, cable core by power main insulation core, ground connection core, control conductor is stranded forms, and power main insulation core, ground connection core, control conductor are respectively aluminium alloy conductor core.
The material of above-mentioned external sheath layer is preferably the one in polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamide, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable wear resistance, make it be adapted to the feature of the frequent movement of Coal Electricity cable.
This cable can be used in mine under-40 DEG C of-90 DEG C of environment, applied range, is specially adapted to rated voltage 8.7/10kV and following coal mine moving class rubber sleeve flexible cable.By test, can reach at 90 DEG C of long-time running ampacitys and be not less than 80% of same cross-sectional copper cable; And not short circuit after 9000 the counter-bending tests of this colliery aluminium alloy cable, not open circuit, the test method that the present invention's 9000 counter-bending tests specify by MT818.1 is carried out.
Aluminium alloy above-described embodiment 1-8 preparation obtained carries out conductivity and resistivity experiment according to GB/T3956, extension at break experiment is carried out according to GB/T228-2002, creep test (1-100 hour) is carried out under temperature 120 DEG C, 120MPa compression condition, 90 degree of tired bending experiments, experimental data is as follows:
Table 1 aluminium alloy capability parameter list
As can be seen from the experimental data of table 1, the resistivity of aluminium alloy provided by the invention is less than or equal to 0.028264 Ω mm
2/ m, conductivity is more than or equal to 61%IACS, and elongation at break is more than or equal to 10%, and under temperature 120 DEG C, 120MPa compression condition, the average creep speed of 1 ~ 100 hour is less than or equal to 1 × 10
-2(%/h), 90 degree of tired bending number of times are more than or equal to 30 times.
In aluminum alloy materials, Mg and Si acts on, form MgSi hardening constituent, improve recrystallization temperature and change ag(e)ing behavio(u)r, making the recrystal grain of goods be able to further refinement, intensity, toughness are improved, plasticity, corrosion resistance improve, and improve yield strength and the elongation of aluminium alloy, therefore, having under Mg, Si element interaction, the extension at break performance of alloy is good; Rare earth elements RE can play the effect improving the tired bending property of Alloy Anti; And the B in alloy material, can improve processing characteristics, particularly the micro-processing characteristics of drawing and restrainting strand aspect of monofilament, make aluminum alloy materials provided by the invention prepare in cable craft, the most I of filament diameter moves 0.2mm to.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments, equivalent replacement etc. done in protection scope of the present invention, all should be included within protection scope of the present invention.
Claims (10)
1. a coal mine cable Al-Fe-Mg-Zr line aluminium alloy, is characterized in that, the percentage by weight of the component that described aluminium alloy comprises and each component is as follows:
Fe：0.2-1.1％；
Mg：0.01-0.4％；
Zr：0.001-0.2％；
Si：0-0.1％；
B：0-0.2％；
Surplus is Al and impurity;
The resistivity of described aluminium alloy is less than or equal to 0.028264 Ω mm
2/ m, conductivity is more than or equal to 61%IACS, and elongation at break is not less than 10%, and 90 degree of tired bending number of times are more than or equal to 30 times.
2. aluminium alloy according to claim 1, is characterized in that, described aluminium alloy also comprises rare earth element, and the content of described rare earth element accounts for the 0.1-0.3% of al alloy component total weight.
3. aluminium alloy according to claim 2, is characterized in that, described rare earth element comprises Ce, La, and described Ce and La accounts at least 50% of rare earth element total amount.
4. aluminium alloy according to any one of claim 1 to 3, is characterized in that, described aluminium alloy is under temperature 120 DEG C, compression 120MPa condition, and the average creep speed of 1-100 hour is less than or equal to 1 × 10
-2(%/h).
5. a colliery aluminium alloy cable, is characterized in that, the processing technology of described aluminium alloy cable comprises the steps:
A, the aluminium alloy according to any one of Claims 1-4 is obtained aluminium alloy rod through melting, casting, rolling;
B, the aluminium alloy rod obtained by step a twist through drawing, restrainting, sofening treatment obtains aluminium alloy conductor core;
C, conductor thread core that step b is obtained through extruded insulation, stranding, extrude sheath or aluminium alloy cable made by armouring.
6. colliery according to claim 5 aluminium alloy cable, is characterized in that, the filament tow that described aluminium alloy conductor core is respectively 0.2-0.5mm by 10-2000 root diameter is stranding into, and described monofilament is obtained through drawing by described aluminium alloy rod.
7. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is applicable to the Minepit environment of-40 DEG C-90 DEG C.
8. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is applicable to the coal mine moving class rubber sleeve flexible cable of rated voltage 8.7/10kV and following grade.
9. colliery according to claim 5 aluminium alloy cable, is characterized in that, described aluminium alloy cable is in 90 DEG C of long-time running situations, and ampacity is not less than 80% of same cross-sectional copper cable.
10. colliery according to claim 5 aluminium alloy cable, is characterized in that, the not short circuit after 9000 counter-bending tests of described aluminium alloy cable, not open circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469573.9A CN104299671A (en) | 2014-09-15 | 2014-09-15 | Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469573.9A CN104299671A (en) | 2014-09-15 | 2014-09-15 | Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104299671A true CN104299671A (en) | 2015-01-21 |
Family
ID=52319364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410469573.9A Pending CN104299671A (en) | 2014-09-15 | 2014-09-15 | Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104299671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473233A (en) * | 2018-11-08 | 2019-03-15 | 江苏中煤电缆有限公司 | The processing method of coal mine low smoke and zero halogen soft rubber cable aluminium alloy conductor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005336549A (en) * | 2004-05-27 | 2005-12-08 | Nippon Light Metal Co Ltd | Aluminum alloy for conductive wire for automobile, and method for manufacturing wire of the alloy |
| CN101880799A (en) * | 2010-07-13 | 2010-11-10 | 安徽欣意电缆有限公司 | Al-Fe-Zn-Mg rare earth alloy wire and preparation method thereof |
| CN102119233A (en) * | 2008-08-11 | 2011-07-06 | 住友电气工业株式会社 | Aluminum alloy wire |
-
2014
- 2014-09-15 CN CN201410469573.9A patent/CN104299671A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005336549A (en) * | 2004-05-27 | 2005-12-08 | Nippon Light Metal Co Ltd | Aluminum alloy for conductive wire for automobile, and method for manufacturing wire of the alloy |
| CN102119233A (en) * | 2008-08-11 | 2011-07-06 | 住友电气工业株式会社 | Aluminum alloy wire |
| CN101880799A (en) * | 2010-07-13 | 2010-11-10 | 安徽欣意电缆有限公司 | Al-Fe-Zn-Mg rare earth alloy wire and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473233A (en) * | 2018-11-08 | 2019-03-15 | 江苏中煤电缆有限公司 | The processing method of coal mine low smoke and zero halogen soft rubber cable aluminium alloy conductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104294093A (en) | Al-Fe-Cu-Mg aluminum alloy for cables for coal mines, aluminum alloy cable and preparation method of alloy cable | |
| CN104294091A (en) | Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable | |
| CN104294095A (en) | Al-Fe-Cu-Mg-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable | |
| JP5247584B2 (en) | Al alloy and Al alloy conductive wire | |
| CN107043878B (en) | Aluminum alloy materials and its production technology, the electric conductor of high-strength high-conductivity | |
| CN104299673A (en) | Al-Fe-Mg-Zr aluminum alloy used for coal mine cables, aluminum alloy cable and manufacturing method | |
| CN104294090A (en) | Al-Fe-Cu-Mg-Ag aluminum alloy for coal cables, aluminum alloy cable and preparation method thereof | |
| CN103757489A (en) | Al-Fe-Cu-Ti aluminum alloy for automotive wire and wiring harness thereof | |
| CN104294120A (en) | Al-Fe-Cu-Ag aluminum alloy for coal mine cable as well as aluminum alloy cable and preparation method of aluminum alloy cable | |
| CN104299669B (en) | Coal mine cable Al Fe Cu Mg Mn line aluminium alloys and aluminium alloy cable | |
| CN104294096B (en) | Coal mine cable Al Fe Cu Mg Cr line aluminium alloys and aluminium alloy cable | |
| CN104294089B (en) | A kind of coal mine cable Al Fe Cu Mg Zr line aluminium alloys and aluminium alloy cable | |
| CN104299674A (en) | Al-Fe-Cu aluminum alloy for coal mine cable and aluminum alloy cable | |
| CN104294094A (en) | Al-Fe-Cu-Zr series aluminum alloy for cables for coal mines and aluminum alloy cable | |
| CN104299670A (en) | Al-Fe-Cu-Mn aluminum alloy for coal mine cable and aluminum alloy cable | |
| CN104299672A (en) | Al-Fe-Mg aluminum alloy for coal mine cable and aluminum alloy cable | |
| CN103757485A (en) | Al-Fe-Cu-Mg aluminum alloy and low-voltage cable manufactured by alloy | |
| CN104299675A (en) | Al-Fe-Mg-Cr aluminum alloy for coal mine cable and aluminum alloy cable | |
| CN103730185A (en) | Al-Fe-Cu-Mg aluminum alloy and electric wire made of the same | |
| CN104299671A (en) | Al-Fe-Mg-Zr aluminum alloy for coal mine cable and aluminum alloy cable | |
| CN110033887A (en) | A kind of Oversea wind power generation presses soft rubber cable in | |
| CN104294114A (en) | Al-Fe-Mg-Mn series aluminum alloy for cables for coal mines and aluminum alloy cable | |
| CN104294092A (en) | Al-Fe-Cu-Cr aluminum alloy for coal mine cable, aluminum alloy cable and preparation method | |
| CN103725930A (en) | Al-Fe-Cu-Mg-Be alumium alloy for automobile wire and wiring harness therefore | |
| CN104299676A (en) | Al-Fe-Mg-Ag aluminum alloy for coal mine cable and aluminum alloy cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination |