CN104294096B - Coal mine cable Al Fe Cu Mg Cr line aluminium alloys and aluminium alloy cable - Google Patents
Coal mine cable Al Fe Cu Mg Cr line aluminium alloys and aluminium alloy cable Download PDFInfo
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- CN104294096B CN104294096B CN201410469646.4A CN201410469646A CN104294096B CN 104294096 B CN104294096 B CN 104294096B CN 201410469646 A CN201410469646 A CN 201410469646A CN 104294096 B CN104294096 B CN 104294096B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
Abstract
The invention discloses a kind of coal mine cable Al Fe Cu Mg Cr line aluminium alloys and aluminium alloy cable, wherein, the component and the percentage by weight of each component that aluminum alloy materials include are as follows：Fe：0.2~1.1%；Cu：0.01~0.4%；Mg：0.01~0.4%；Cr：0.005~0.2%；Si：0~0.1%；B：0~0.2%；Surplus is Al and impurity；Above-mentioned aluminum alloy materials are obtained into aluminium alloy rod by melting, casting, rolling mill practice, then aluminium alloy core is formed through drawing, bundle strand, softening, then by extruded insulation, stranding, extrude sheath or armouring aluminium alloy cable is made in conductor thread core.Coal mine cable Al Fe Cu Mg Cr line aluminium alloys, with the characteristic such as high intensity, high conductivity, bending property be good；The aluminium alloy cable being made up of the aluminium alloy can meet the requirement to cable performance in the field of colliery.
Description
Technical field
The invention belongs to technical field of aluminum alloy technology, and in particular to a kind of coal mine cable Al-Fe-Cu-Mg-Cr line aluminium alloys
And aluminium alloy cable.
Background technology
Coal mine cable belongs to cable industry technology content compared with high product.Coal mine cable because the environment that uses is complicated,
Condition of work is severe and mobile frequent, and service life is not long, and the region of methane accumulation is again extremely dangerous, therefore not only to cable
Security requirement itself is very high, and wearability, the anti-external tensile force performance requirement to frequent cable for mobile applications are very high.
Cable is mostly using copper core as wire currently on the market.However, with copper resource growing tension, be on the verge of it is deficient
Weary, using replacing, the wire demand of copper conductor other materials is increasing.Aluminium conductive effect is good in metal material, light weight, valency
Lattice are cheap；Meanwhile, the reinforcement of people's environmental consciousness in recent years needs to mitigate weight to improve machine fuel utilization rate strongly.Cause
This, replaces copper core cable to be trend of the times with aluminium cable.
However, the problem of there is mechanical performance and poor corrosion resistance in common aluminium cable, it is impossible to meet colliery use
The demand for the good bending property that cable is frequently moved；The adverse circumstances of coal mine cable can not be met to cable conductor
Conductance and the higher requirement of mechanical strength.Therefore, developing a kind of can meet the aluminium alloy cable of use requirement in coal mining
With very wide market prospects.
The content of the invention
To solve the problem of above-mentioned prior art is present, the present invention proposes a kind of coal mine cable with Al-Fe-Cu-Mg-Cr systems
Aluminium alloy and aluminium alloy cable, the characteristic, such as conductance such as have high intensity, high conductivity, bending property good of the aluminium alloy
More than or equal to 61%IACS, elongation at break is more than or equal to 10%, and 90 degree of tired bending number of times are more than or equal to 30 times；The aluminium alloy
The aluminium alloy cable of manufacture is not short-circuit after 9000 counter-bending tests, not breaking, meets in the field of colliery to cable performance
Requirement.
The technical proposal of the invention is realized in this way：
A kind of coal mine cable Al-Fe-Cu-Mg-Cr line aluminium alloys, component and the weight of each component that the aluminium alloy includes
Measure percentage as follows：
Fe：0.2~1.1%；
Cu：0.01~0.4%；
Mg：0.01~0.4%；
Cr:0.005~0.2%；
Si：0~0.1%；
B：0~0.2%；
Surplus is Al and impurity；
The resistivity of the aluminium alloy is less than or equal to 0.028264 Ω mm2/ m, conductance is more than or equal to 61%IACS, breaks
Elongation is split more than or equal to 10%, and 90 degree of tired bending number of times are more than or equal to 30 times.
Further, the aluminium alloy also includes rare earth element, and the content of the rare earth element accounts for al alloy component gross weight
0.1~0.3%.
Further, the rare earth element includes Ce and La, and the content of the Ce and La account for rare earth element total amount at least
50%.
Further, the aluminium alloy is under the conditions of 120 DEG C of temperature, compression 120MPa, the average creep of 1~100 hour
Speed is less than or equal to 1 × 10-2(%/h).
A kind of colliery aluminium alloy cable, the aluminium alloy cable is made as follows：
A, by foregoing aluminium alloy pass through melting, casting, rolling aluminium alloy rod；
B, the aluminium alloy rod for obtaining step a obtain aluminium alloy conductor core by drawing, bundle strand, sofening treatment；
Aluminium alloy electric is made by extruded insulation, stranding, extrude sheath or armouring in c, the conductor thread core for obtaining step b
Cable.
Further, aluminium alloy conductor core described in step b is respectively 0.2~0.5mm monofilament by 10~2000 diameters
Bundle strand is made, and the filament tow is obtained by the aluminium alloy rod by drawing.
Further, the aluminium alloy cable is applied to -40 DEG C~90 DEG C of Minepit environment.
Further, the aluminium alloy cable is applied to the coal mine moving class rubber of rated voltage 8.7/10kV and level below
Sleeve flexible cable.
Further, the aluminium alloy cable is in the case of 90 DEG C of longtime runnings, and current-carrying capacity is not less than same cross-sectional copper cable
80%.
Further, the aluminium alloy cable is not short-circuit after 9000 counter-bending tests, not breaking.
Further, the preparation method of the aluminium alloy conductor core in the present invention used in colliery aluminium alloy cable, including with
Lower step：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：It is proportionally added into the aluminium alloy mentioned in the present invention
Composition, carries out smelting technology under the conditions of 700~800 DEG C, is then cast under the conditions of 650~680 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a 2~6h of solution treatment in the range of 460~550 DEG C, then at 20~100 DEG C
Rapid quenching in cooling water；
C, the ingot casting for obtaining step b 6~10h of Ageing Treatment in the range of 150~250 DEG C, then it is warming up to 300~400
DEG C, it is rolled into rod of metal alloy；
D, in the range of 280~300 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area extremely
The 50~60% of cross-sectional area, obtain aluminium alloy wire in step c；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 70~100%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, are carried out for the first time under the conditions of 230~320 DEG C
3~6h is heat-treated, 8~14h then will be heat-treated again under the conditions of 300~400 DEG C, and obtain aluminium alloy conductor core.
In the preparation method of above-mentioned aluminium alloy conductor core, in casting step, heating should be slow, adds a variety of alloys
During ingot, should the shove charge below 300 DEG C, to ensure casting homogeneous heating, at as high temperature as possible (close to the molten of eutectic
Point) alloying element is mutually dissolved in matrix with second by the solution heat treatment of long period, due to trace alloying element (B, Si,
RE involvement), makes matrix turn into sub-saturated state, the intensity and plasticity of alloy can be greatly improved by solution treatment, improves
The decay resistance of alloy；Quickly cooling (slings the time in being completely immersed in cooling medium to casting from casting unsuitable after solid solution
More than 15s, so that casting uniform quenching) improve casting tensile property and pliability；In timeliness incipient stage, matrix saturation degree
Very big, the hardness of casting can be greatly improved, with the increase of aging time, and the concentration between matrix and precipitate reaches balance,
Now precipitate precipitation beginning is slack-off, is now passing through shorter soaking time, can suppress grain growth, so as to obtain less
Coarse-fine aluminium alloy, is derived from excellent mechanical property i.e. higher intensity, good plasticity and toughness；In step f twice
Annealing can go the internal stress of aluminium alloy stranded conductor to greatest extent, and the electric property of stable alloy line, stable dimensions are reduced
Deformation, greatly improves the draftability and bendability of alloy wire.
The coal mine cable that the present invention is provided with the beneficial effect of Al-Fe-Cu-Mg-Cr line aluminium alloys and aluminium alloy cable such as
Under：
1st, the coal mine cable aluminium alloy that the present invention is provided, is optimized by the element to aluminium alloy, so as to improve this
The performance of aluminium alloy.The present invention selects Al-Fe-Cu-Mg-Cr line aluminium alloys, by adding Fe elements, can improve the machine of alloy
Tool intensity and tensile property, Fe can also significantly improve the high-temperature creep resistance of alloy, and improve the anti-fatigue performance of alloy；
Cu can also improve high temperature creep property and anti-fatigue performance, and have certain solid solution strengthening effect, the CuAl of Precipitation2
There is obvious ageing strengthening effect；A small amount of Mg is added in aluminium alloy, refinement cast sturcture can be achieved；Cr is formed in aluminium
(CrFe)Al7Intermetallic compound, hinders the forming core and growth process of recrystallization, it is hereby achieved that less coarse-fine ring is ultra-fine
Alloy, makes alloy mechanical property obtain the elongation percentage of larger raising, particularly alloy, moreover it is possible to improve alloy ductility and reduction stress
Corrosion cracking sensitiveness, the antifatigue bending property of notable modified alloy improves the service life of cable.Appropriate Cr can be supported
Disappear adverse effects of the Cu to corrosion stability, but excessive Cr can increase quenching sensitive, and it is in yellow to enable aluminum alloy to anode oxide film, because
This Cr of the present invention content is 0.005~0.2%.
A small amount of Si, Mg and Si effect, shape are added in the coal mine cable aluminium alloy that the present invention is provided, selection in aluminium alloy
Into MgSi hardening constituents, improve recrystallization temperature and change ag(e)ing behavio(u)r, the recrystal grain of product is further refined, by force
Degree, toughness are improved, and plasticity, corrosion resistance are improved, and improve the yield strength and elongation percentage of aluminium alloy, it is to avoid aluminium alloy is produced
The reprocessing of product, improves production efficiency, reduces production cost.Meanwhile, the content to Si is limited, because excessive Si can be led
Tensile property reduction is caused, the processing characteristics of aluminium alloy cable is had influence on, and the tired bending property of conductor may be reduced, and
Excessive Si can also reduce electrical property.
The present invention further preferably adds a certain amount of B, in terms of can improving the micro- drawing of processing characteristics, particularly monofilament and bundle strand
Processing characteristics.The colliery aluminium alloy that the present invention is provided, by the way that as al alloy component, appropriate B can both be improved into alloy
Performance, will not can deteriorate the performance of alloy, particularly electrical property and extension property because of excessive amount again.The aluminium that the present invention is provided
Alloy material, matches to ensure the performance of alloy by rational alloying component.
The colliery aluminium alloy that the present invention is provided, further preferably adds a certain amount of rare earth element (RE), and wherein Ce and La contain
Amount accounts at least the 50% of rare earth element total content, and rare earth element can not only significantly improve the electrical property of alloy, moreover it is possible to play and carry
The effect of high alloy antifatigue bending property, extends the service life of cable.It is preferred that Ce and La, is because both elements exist
Effect becomes apparent from compared with other rare earth element improvements in the present invention.
The colliery aluminium alloy material that the present invention is provided, after melting, casting, solid solution and aging treatment, rolling mill practice,
The resistivity of obtained aluminium alloy is less than or equal to 0.028264 Ω mm2/ m, electrical conductivity is more than or equal to 61%IACS, extension at break
Rate is more than or equal under the conditions of 10%, 120 DEG C of temperature, 120MPa compression, and 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 filament diameter most I moves 0.2mm to.
2nd, the colliery aluminium alloy cable as obtained by the Al-Fe-Cu-Mg-Cr line aluminium alloys manufacture of the present invention, not only has
Good electric conductivity, tensile property, creep-resistant property and anti-fatigue performance, particularly bending resistance have also reached colliery use
The technical requirements of copper core cable；Meanwhile, colliery aluminium alloy cable is good due to pliability, and weight is gently many compared with copper, thus makees
It is more convenient to use for coal mine soft cable, the cost of coal mine cable is effectively reduced, operating efficiency is improved, had
There is very good technical economic benefit.
The colliery aluminium alloy cable that the present invention is provided, it is adaptable to flexible rubber-sheathed flexible cables for use in mines, rated voltage
8.7/10kV and following coal rubber sheathed flexible cable for mine, under the conditions of 90 DEG C of longtime runnings, current-carrying capacity is not less than same cross-sectional copper electricity
The 80% of cable；And the colliery aluminium alloy cable that the present invention is provided is not short-circuit, breaking after 9000 counter-bending tests, its
In, 9000 counter-bending tests test method as defined in MT818.1 is carried out.
Embodiment
In the present embodiment, impurity can refer to may not be intentionally introduced miscellaneous in aluminium alloy manufacturing process
In matter or each element itself it is unintentional containing.
The aluminium alloy and the technical scheme of aluminium alloy cable provided below for the present invention is described in detail respectively：
Embodiment 1
The percentage by weight of a kind of coal mine cable Al-Fe-Cu-Mg-Cr line aluminium alloys, component and each component is following (total
Weight：1T)：
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 700 DEG C, is then cast under the conditions of 650 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 3h in the range of 500 DEG C, then quickly quench in 50 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 6h in the range of 150 DEG C, then it is warming up to 350 DEG C, it is rolled into alloy
Bar；
D, in the range of 280 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 50% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 70%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 260 DEG C
3h, then will be heat-treated 8h again under the conditions of 300 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can be by 10~2000
Root diameter is respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium alloy is determined according to the specification of aluminium alloy cable
The diameter and quantity of conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr, or add pure metal ingot.
Colliery aluminium alloy is made by extruded insulation, stranding, extrude sheath or armouring in above-mentioned aluminium alloy conductor core
Cable.
Wherein, aluminium alloy cable includes cable core and the external sheath layer that is arranged on outside cable core, cable core by power major insulation core,
Ground connection core, control conductor bundle strand are formed, and power major insulation core, ground connection core, control conductor are respectively aluminium alloy conductor
Core.There are filling core layer, and power major insulation core and ground connection core, the concentric stranding of control conductor between core layer.
The material of above-mentioned external sheath layer is preferably polyvinyl chloride, crosslinked polyethylene, polyvinyl chloride-butyronitrile polymer, polyamides
One kind in amine, fluorinated ethylene propylene (FEP), haloflex, polypropylene, by selecting the material of external sheath layer, increase cable is wear-resisting
Property, adapt it to the characteristics of coal mine cable is frequently moved.
Embodiment 2
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
In above-mentioned aluminum alloy materials, added with a certain amount of Si, Mg and Si effect, MgSi hardening constituents are formed, raising is tied again
Brilliant temperature and change ag(e)ing behavio(u)r, enable the recrystal grain of product further to refine, intensity, toughness are improved, plasticity,
Corrosion resistance is improved, and improves the yield strength and elongation percentage of aluminium alloy, it is to avoid the reprocessing of alloy product, improves production effect
Rate, reduces production cost.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 780 DEG C, is then cast under the conditions of 660 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 3h in the range of 460 DEG C, then quickly quench in 20 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 8h in the range of 160 DEG C, then it is warming up to 300 DEG C, it is rolled into alloy
Bar；
D, in the range of 290 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 55% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 75%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 230 DEG C
4h, then will be heat-treated 10h again under the conditions of 320 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-Si ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 2 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 3
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
In above-mentioned aluminum alloy materials, preferably added with a certain amount of B and rare earth element, B is used as al alloy component, Ke Yigai
The performance of kind alloy, particularly electrical property and extension property, and ensure by the proportion relation of each reasonable composition the property of alloy
Energy.
Rare earth element can not only significantly improve the electrical property of alloy, moreover it is possible to play and improve alloy antifatigue bending property
Effect, extends the service life of cable.Wherein, rare earth elements RE includes Ce, La and Pr, wherein, Ce and La content account for dilute
The 50% of earth elements total content.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 730 DEG C, is then cast under the conditions of 665 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 4h in the range of 480 DEG C, then quickly quench in 70 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 7h in the range of 200 DEG C, then it is warming up to 320 DEG C, it is rolled into alloy
Bar；
D, in the range of 290 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 60% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 80%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 280 DEG C
5h, then will be heat-treated 12h again under the conditions of 350 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-Si ingots, Al-B ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 3 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 4
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
Wherein, rare earth elements RE includes Ce, La and Er, wherein, Ce and La content account for the 60% of rare earth element total content.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 760 DEG C, is then cast under the conditions of 680 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 6h in the range of 500 DEG C, it is then quick in 100 DEG C of cooling water
Quenching；
C, the ingot casting for obtaining step b Ageing Treatment 9h in the range of 230 DEG C, then it is warming up to 370 DEG C, it is rolled into alloy
Bar；
D, in the range of 300 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 58% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 85%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 320 DEG C
6h, then will be heat-treated 13h again under the conditions of 390 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-Si ingots, Al-B ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 4 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 5
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
Wherein, rare earth elements RE includes Ce, La, Pr and Er, wherein, Ce and La content account for rare earth element total content
70%.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 800 DEG C, is then cast under the conditions of 670 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 5h in the range of 550 DEG C, then quickly quench in 65 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 10h in the range of 195 DEG C, then it is warming up to 380 DEG C, it is rolled into alloy
Bar；
D, in the range of 293 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 54% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 100%, obtain aluminium alloy conductor monofilament；In the step, because of aluminium alloy
Cross-sectional area does not reduce, that is, the aluminium alloy conductor monofilament obtained is the aluminium alloy wire in step d；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 300 DEG C
6h, then will be heat-treated 14h again under the conditions of 400 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-Si ingots, Al-B ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 5 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 6
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
Wherein, rare earth elements RE be Ce, La, Pr and Er, wherein, Ce and La content account for rare earth element total content
60%..
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 756 DEG C, is then cast under the conditions of 680 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 4h in the range of 530 DEG C, then quickly quench in 40 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 8h in the range of 250 DEG C, then it is warming up to 400 DEG C, it is rolled into alloy
Bar；
D, in the range of 284 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 56% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 90%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 275 DEG C
5h, then will be heat-treated 9h again under the conditions of 350 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can be by 10~2000
Root diameter is respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium alloy is determined according to the specification of aluminium alloy cable
The diameter and quantity of conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-Si ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 6 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 7
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
Wherein, rare earth elements RE is Ce, La.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 785 DEG C, is then cast under the conditions of 658 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 6h in the range of 550 DEG C, it is then quick in 100 DEG C of cooling water
Quenching；
C, the ingot casting for obtaining step b Ageing Treatment 7h in the range of 220 DEG C, then it is warming up to 360 DEG C, it is rolled into alloy
Bar；
D, in the range of 286 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 52% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 78%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 250 DEG C
4h, then will be heat-treated 11h again under the conditions of 320 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 7 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 8
A kind of following (the gross weight of the percentage by weight of coal mine cable aluminium alloy, component and each component：1T)：
Wherein, rare earth elements RE be Ce, La, Lu, Pr and Er, wherein, Ce and La content account for rare earth element total content
65%.
The method that aluminium alloy core is prepared using above-mentioned aluminum alloy materials, is comprised the following steps that：
A, by carrying out casting and obtaining founding materials to molten aluminium alloy：Above-mentioned al alloy component is added according to the above ratio,
Smelting technology is carried out under the conditions of 785 DEG C, is then cast under the conditions of 658 DEG C, obtains ingot casting；
B, the ingot casting for obtaining step a solution treatment 6h in the range of 490 DEG C, then quickly quench in 60 DEG C of cooling water
Fire；
C, the ingot casting for obtaining step b Ageing Treatment 7h in the range of 220 DEG C, then it is warming up to 400 DEG C, it is rolled into alloy
Bar；
D, in the range of 295 DEG C, the rod of metal alloy that step c is rolled into carries out drawing processing, makes reduced cross-sectional area to step c
The 52% of middle cross-sectional area, obtains aluminium alloy wire；
E, formed aluminium alloy core temperature conditionss under, the aluminium alloy wire that step d is obtained carries out drawing processing again, makes
Reduced cross-sectional area into step d aluminium alloy wire sectional area 78%, obtain aluminium alloy conductor monofilament；
F, the aluminium alloy conductor monofilament for obtaining some step e are stranded, and first time heat treatment is carried out under the conditions of 250 DEG C
4h, then will be heat-treated 11h again under the conditions of 320 DEG C, and obtain aluminium alloy core.Wherein, aluminium alloy core can by 10~
2000 diameters are respectively that 0.2~0.5mm aluminium alloy conductor monofilament bundle strand is made, and aluminium is determined according to the specification of aluminium alloy cable
The diameter and quantity of alloy conductor monofilament.
Wherein, in step a, al alloy component, which adds form, to be：Be proportionally added into Al ingots, Al-Fe ingots, Al-Cu ingots,
Al-Mg ingots, Al-Cr ingots, Al-RE ingots, or add pure metal ingot.
The colliery aluminium alloy cable preparation method is substantially the same manner as Example 1, and simply aluminium alloy core used is real
Apply the aluminium alloy core that example 8 is prepared；The construction of cable of aluminium alloy is same as Example 1.
Embodiment 9
The aluminium alloy that above-described embodiment 1~8 is prepared carries out electric conductivity and resistivity experiment according to GB/T 3956,
Extension at break experiment is carried out according to GB/T228-2002, creep test is carried out under the conditions of 120 DEG C of temperature, 120MPa compression
(1-100 hours), 90 degree of fatigue bending experiments, the experiment of 400h decay resistances；The test method as defined in MT818.1, will be real
Apply 9000 bending resistances experiments of aluminium alloy cable progress that example 1~8 is prepared.
The aluminium alloy capability parameter list of table 1
From table 1, it can be seen that the resistivity of aluminium alloy is less than or equal to 0.028264 Ω mm2/ m, electrical conductivity be more than etc.
In 61%IACS, elongation at break is more than or equal under the conditions of 10%, 120 DEG C of temperature, 120MPa compression, 1~100 hour flat
Equal creep speed 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.Cr elements and RE element energy
The corrosion resistance of alloy is significantly improved, 400h corrosion resistance tests mass loss is less than 0.6g/m2·hr.The fracture of embodiment 3 and 4
Elongation percentage is apparently higher than other embodiment.Because Mg and Si acts on forming MgSi hardening constituents, when improving recrystallization temperature and changing
Effect behavior, enables the recrystal grain of product further to refine；Further, Cr forms (CrFe) Al in aluminium7Change between metal
Compound, hinders the forming core and growth process of recrystallization, it is hereby achieved that the superfine alloy of less coarse-fine ring, improves prolonging for alloy
Stretch performance.
The aluminium alloy filament diameter most I that embodiment 1~8 is prepared moves 0.2mm to, and embodiment 1~8 prepare and
The aluminium alloy cable obtained carries out 9000 bending resistances experiments, as a result shows not short-circuit, not breaking after experiment.The cable can
For under -40 DEG C in mine~90 DEG C environment, having a wide range of application, it is particularly suitable for use in rated voltage 8.7/10kV and following colliery is used
Mobile class rubber sleeve flexible cable.By test, it can be reached in 90 DEG C of longtime running current-carrying capacities and be not less than same cross-sectional copper cable
80%.
Claims (8)
1. a kind of coal mine cable Al-Fe-Cu-Mg-Cr line aluminium alloys, it is characterised in that the component and each group of the aluminium alloy
The percentage by weight divided is as follows：
Fe：0.2~1.1%；
Cu：0.01~0.4%；
Mg：0.01~0.4%；
Cr：0.005~0.2%；
Si：0~0.1%；
B：0~0.2%；
Rare earth element：0.1~0.3%；
Surplus is Al and impurity；
The resistivity of the aluminium alloy is less than or equal to 0.028264 Ω mm2/ m, conductance is more than or equal to 61%IACS, and fracture is stretched
Long rate is more than or equal to 10%, and 90 degree of tired bending number of times are more than or equal to 30 times；The aluminium alloy is in 120 DEG C of temperature, compression
Under the conditions of 120MPa, the average creep speed of 1~100 hour is less than or equal to 1 × 10-2(%/h).
2. aluminium alloy according to claim 1, it is characterised in that the rare earth element includes Ce and La, the Ce and La
Content account at least the 50% of rare earth element total amount.
3. a kind of colliery aluminium alloy cable, it is characterised in that the aluminium alloy cable is made as follows：
A, by the aluminium alloy described in claim 1 to 2 any one pass through melting, casting, rolling aluminium alloy rod；
B, the aluminium alloy rod for obtaining step a obtain aluminium alloy conductor core by drawing, bundle strand, sofening treatment；
Aluminium alloy cable is made by extruded insulation, stranding, extrude sheath or armouring in c, the conductor thread core for obtaining step b.
4. colliery aluminium alloy cable according to claim 3, it is characterised in that aluminium alloy conductor core described in step b
It is stranding into by the filament tow that 10~2000 diameters are respectively 0.2~0.5mm, the filament tow is by the aluminium alloy rod by drawing
It is made.
5. colliery aluminium alloy cable according to claim 3, it is characterised in that the aluminium alloy cable is applied to -40
DEG C~90 DEG C of Minepit environment.
6. colliery aluminium alloy cable according to claim 3, it is characterised in that the aluminium alloy cable is applied to specified
Voltage 8.7/10kV and level below flexible rubber-sheathed flexible cables for use in mines.
7. colliery aluminium alloy cable according to claim 3, it is characterised in that the aluminium alloy cable is long-term at 90 DEG C
Under running situation, current-carrying capacity is not less than the 80% of same cross-sectional copper cable.
8. colliery aluminium alloy cable according to claim 3, it is characterised in that the aluminium alloy cable passes through 9000 times
It is not short-circuit after counter-bending test, not breaking.
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| CN106167867A (en) * | 2015-12-30 | 2016-11-30 | 河海大学 | A kind of rare-earth containing aluminium magnesium alloy electromagnetic shielding silk round wires |
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| EP1564307A1 (en) * | 2004-02-13 | 2005-08-17 | Denso Corporation | Aluminium alloy extruded product for heat exchangers and method of manufacturing the same |
| CN103695727A (en) * | 2013-12-27 | 2014-04-02 | 安徽欣意电缆有限公司 | Al-Fe-Cu-V-Ag aluminum alloy, preparation method thereof and aluminum alloy cable |
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| EP1564307A1 (en) * | 2004-02-13 | 2005-08-17 | Denso Corporation | Aluminium alloy extruded product for heat exchangers and method of manufacturing the same |
| CN103757489A (en) * | 2013-12-26 | 2014-04-30 | 安徽欣意电缆有限公司 | Al-Fe-Cu-Ti aluminum alloy for automotive wire and wiring harness thereof |
| CN103695727A (en) * | 2013-12-27 | 2014-04-02 | 安徽欣意电缆有限公司 | Al-Fe-Cu-V-Ag aluminum alloy, preparation method thereof and aluminum alloy cable |
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Application publication date: 20150121 Assignee: Beijing Hua power Billiton Energy Technology Co., Ltd. Assignor: Anhui Yanan Cable Factory Contract record no.: 2018990000172 Denomination of invention: Al-Fe-Cu-Mg-Cr series aluminum alloy for cables for coal mines and aluminum alloy cable Granted publication date: 20170908 License type: Common License Record date: 20180703 |
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Effective date of registration: 20190729 Address after: 245399 Huishan Road, Huayang Town Eco-industrial Park, Jixi County, Xuancheng City, Anhui Province Patentee after: Anhui Zhongqing Xinyi Aluminum Alloy Cable Co., Ltd. Address before: 100095 Second Floor 201 (B-127) of Building 14, No. 7 Courtyard, Dijin Road, Haidian District, Beijing Patentee before: Huiheng Xinyi New Materials Technology (Beijing) Co., Ltd. |