CN108754248A - A kind of overhead stranded conductor aluminium alloy conductor and its manufacturing method - Google Patents
A kind of overhead stranded conductor aluminium alloy conductor and its manufacturing method Download PDFInfo
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- CN108754248A CN108754248A CN201810386407.0A CN201810386407A CN108754248A CN 108754248 A CN108754248 A CN 108754248A CN 201810386407 A CN201810386407 A CN 201810386407A CN 108754248 A CN108754248 A CN 108754248A
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
Abstract
A kind of overhead stranded conductor aluminium alloy conductor and its manufacturing method, aluminium alloy conductor contain element M g, Si, La, Ce, Cr, V, Ti and B, and surplus is that Al and inevitable impurity, manufacturing method include the following steps：Melting prepare aluminum alloy melt, spray refining in stove, online crystal grain refinement, online degassing and filtration, high-energy ultrasonic stirring, constant-temperature continuous casting tandem rolling, press quenching, without torque drawing and artificial aging.The additive amount and purification technique that the present invention passes through optimization mixed rare earth of lanthanum and cerium, improve the cleanliness factor and conductivity of aluminium alloy conductor, the homogeneity of ingredients for improving aluminium alloy conductor is stirred by high-energy ultrasonic, the stability that strand breaking down, finish to gauge and hardening heat are improved by constant-temperature continuous casting tandem rolling, improves the intensity and uniformity of aluminium alloy conductor.Aluminium alloy conductor has the advantages that intensity is high, conductivity is high and consistency is good, is suitable for manufacturing aluminum stranded wire of aluminum alloy core and all aluminium alloy twisted wire, reduces the electric energy loss of transmission line of electricity.
Description
Technical field
The invention belongs to aluminium alloy conductor manufacturing technology field, be specifically related to a kind of overhead stranded conductor aluminium alloy conductor and
Its manufacturing method.
Background technology
With the fast development of Chinese national economy and the continuous improvement of living standards of the people, the demand to electric power drastically increases
Long, long range long-span electric transmission line increasingly develops to super-pressure large capacity direction.But the existing long range large span power transmission in China
The steel-cored aluminium strand that the overhead stranded conductor of circuit is mainly still process by aluminum conductor braided wires line, this steel-cored aluminium strand
Multi-line power transmission electric energy loss is larger, causes utilization rate of electrical relatively low.In order to reduce the electric energy damage of long range long-span electric transmission line
Consumption improves efficiency, and there is an urgent need to develop the aluminium alloy conductors of high intensity, high conductivity to manufacture all aluminum alloy conductor
Overhead stranded conductor.
Al-Mg-Si system alloy is heat-treatable strengthened wrought aluminium alloy, is that the currently manufactured overhead stranded conductor in China is closed with aluminium
The material of main part of golden conducting wire.The existing overhead stranded conductor in China is usually less than 330MPa with the intensity of Al-Mg-Si-type aluminum alloy conducting wire,
Conductivity is usually less than 53%IACS.The manufacture difficulty of Al-Mg-Si-type aluminum alloy conducting wire is larger, the reason is that with intensified element
The raising of Mg, Si content, although the intensity of aluminium alloy conductor can also improve therewith, the conductivity of aluminium alloy conductor also can be gradual
Decline, it is difficult to be improved simultaneously to lead to the intensity of aluminium alloy conductor and conductivity.In addition, existing Al-Mg-Si-type aluminum alloy is led
Line intensity along its length and conductivity fluctuations are larger, i.e. the stability and consistency of upper intensity and conductivity along its length
It is poor, it is difficult to meet requirement of the current China's long range long-span electric transmission line to all aluminium alloy overhead stranded conductor.Therefore, existing frame
Empty twisted wire aluminium alloy conductor and its manufacturing method still have much room for improvement and develop.
Invention content
It is above-mentioned there are problem and shortage it is an object of the invention to be directed to, a kind of high intensity, high conductivity and uniformly are provided
Property and the good overhead stranded conductor aluminium alloy conductor and its manufacturing method of consistency.
The technical proposal of the invention is realized in this way：
Overhead stranded conductor aluminium alloy conductor of the present invention, its main feature is that by following mass percent at being grouped as：Mg 1.2
~1.4%, Si 1.6~1.8%, La 0.08~0.12%, Ce 0.02~0.03%, Cr 0.02~0.04%, V 0.01~
0.02%, Ti 0.005~0.01%, B 0.0005~0.001%, Fe≤0.15%, surplus be Al and inevitably it is other miscellaneous
The mass ratio of matter, wherein La and Ce is 4:The mass ratio of 1, Cr and V is 2:The mass ratio of 1, Ti and B is 10:1, other impurity
Single content≤0.01%, total amount≤0.05%.
The manufacturing method of overhead stranded conductor aluminium alloy conductor of the present invention, its main feature is that including the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：Aluminium ingot is heated at 760~780 DEG C and is melted, the magnesium ingot for accounting for raw material total weight 1.2~1.4%, 8 are then added
~9% Al-20Si alloys, 0.1~0.2% Al-20Cr alloys, 0.1~0.2% Al-10V alloys and 0.1~0.15%
Mixed rare earth of lanthanum and cerium, stirring are fused into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the refining agent for accounting for raw material total weight 0.5~1% are blown aluminum alloy melt
Refining carries out degasification removal of impurities processing in 10~20 minutes, stands 30~60 minutes after skimming again；
4th step：Aluminum alloy melt is imported into chute, the Al-5Ti-0.5B rod of metal alloy for accounting for raw material total weight 0.1~0.2% is added
Carry out online crystal grain refinement processing；
5th step：It is 150~200 revs/min, purity of argon that aluminum alloy melt is flowed successively through to the rotary speed being arranged on chute
For 99.99%, argon flow amount be 1~2 cube m/h getter graphite rotator and porosity be 50~60ppi ceramic mistake
Filter plate carries out online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Speed is 17~18 ms/min, ultrasonic output frequency is 10~15kHz, ultrasonic power output is 800~1000 watts of conditions
Under, by aluminum alloy melt continuous casting and rolling at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out
Press quenching；
7th step：Under conditions of passage drawing deformation amount is 1~2%, drawing speed is 9~12 meter per second, by Aluminum alloy round bar
No torque is drawn into a diameter of 1~5 millimeter of aluminium alloy wire；
8th step：By aluminium alloy wire in 130~140 DEG C of timeliness 2~3 hours, then proceed to be warming up to 160~170 DEG C of timeliness 5~
6 hours, overhead stranded conductor aluminium alloy conductor is obtained after furnace cooling.
Compared with prior art, the present invention haing the following advantages：
The present invention by optimize aluminium alloy conductor at being grouped as and its manufacturing process, improve the cleanliness factor and group of aluminium alloy conductor
Homogeneity of ingredients is knitted, solves the problems, such as that aluminium alloy conductor intensity in the prior art and conductivity are difficult to obtain raising simultaneously, makes
The tensile strength of aluminium alloy conductor is more than 330MPa, and elongation after fracture is more than 4.5%, and conductivity is more than 53%IACS, and aluminium alloy is led
Line has the advantages that high intensity, conductivity height and uniformity and consistency are good, is suitable for manufacturing long range large span power transmission line
, for reducing the electric energy loss of transmission line of electricity, utilization rate of electrical is improved with highly important in road with all aluminium alloy twisted wire is maked somebody a mere figurehead
Meaning.
The present invention will be further described below with reference to the drawings.
Description of the drawings
Fig. 1 is the manufacturing flow chart of overhead stranded conductor aluminium alloy conductor of the present invention.
Specific implementation mode
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, the present invention is made below further detailed
It describes in detail bright.
Overhead stranded conductor aluminium alloy conductor of the present invention, by following mass percent at being grouped as：Mg 1.2~
1.4%, Si 1.6~1.8%, La 0.08~0.12%, Ce 0.02~0.03%, Cr 0.02~0.04%, V 0.01~0.02%,
Ti 0.005~0.01%, B 0.0005~0.001%, Fe≤0.15%, surplus other impurity for Al and inevitably, wherein
The mass ratio of La and Ce is 4:The mass ratio of 1, Cr and V is 2:The mass ratio of 1, Ti and B is 10:1, the single content of other impurity
≤ 0.01%, total amount≤0.05% of other impurity.
Mg and Si can form Mg in aluminium alloy conductor ageing process2Si hardening constituents enhance the strong of aluminium alloy conductor
Degree, Mg, Si content are higher, and the intensity of aluminium alloy conductor is also higher, but the conductivity of aluminium alloy conductor can continuously decrease.The application
Inventor found after lot of experiments, when Mg contents be less than 1.2% or Si contents be less than 1.6% when, aluminium alloy is led
The intensity of line is all unable to reach 330MPa or more, and when Mg contents are more than 1.4% or Si contents and are more than 1.8%, aluminium alloy conductor
Conductivity be then unable to reach 53%IACS or more.Therefore, in order to ensure that aluminium alloy conductor obtains enough intensity and conductivity,
Therefore the selection of Mg contents is selected in 1.2~1.4%, Si contents 1.6~1.8%.
La and Ce is the rare earth element that existing aluminium alloy conductor often adds, and has purifying work to aluminium alloy conductor
With can eliminate negative effect of the metallic impurity elements to aluminium alloy conductor intensity and conductivity, improve the strong of aluminium alloy conductor
Degree and conductivity.But the mass ratio of the additive amount of prior art La, Ce rare earth element, especially La, Ce rare earth element all lacks
In-depth study causes the addition of La, Ce rare earth element all relatively more random, does not optimize numerical value accurately.Present invention
People has found after the research of a large amount of exploitative experiment, when the mass ratio of the La and Ce of addition are 4:1, and La contents be 0.08~
0.12%, when Ce contents are 0.02~0.03%, La the and Ce rare earth elements of addition can eliminate H, O, Na, K etc. to the maximum extent
Negative effect of the non-metallic inclusion to aluminium alloy conductor intensity and conductivity, so significantly improve aluminium alloy conductor intensity and
Conductivity.
The main function of Cr and V is fine degenerate richness Fe phases.Fe is inevitable impurity element in aluminium ingot, in aluminium alloy
Usually with coarse needle-shaped richness Fe phase formal distributions in alloy matrix aluminum in conducting wire, coarse needle-shaped richness Fe, which meets, seriously isolates aluminium conjunction
Auri body reduces the intensity and plasticity of aluminium alloy conductor.Present inventor has found after studying through a large number of experiments, individually
Addition Cr or V has inhibiting effect to the growth of coarse needle-shaped richness Fe phases, but can not all completely eliminate coarse needle-shaped richness Fe phases.When
The V of the Cr and 0.01~0.02% of compound addition 0.02~0.04%, and the mass ratio of Cr and V is 2:When 1, pass through the friendship of Cr and V
Interaction carries out fine degenerate to rich Fe phases, can completely inhibit rich Fe phases by acicular growth, makes rich Fe phases from needle-shaped turn coarse
Become the graininess of fine uniform, can not only eliminate influences of the rich Fe with respect to aluminium alloy conductor intensity and plasticity, may be used also instead
To significantly improve the intensity and plasticity of aluminium alloy conductor.
Ti and B is added in aluminium alloy conductor in the form of Al-5Ti-0.5B rod of metal alloy, and main function is that refinement aluminium closes
The crystal grain of golden conducting wire, improves the structural constituent uniformity of aluminium alloy conductor, so improve the intensity of aluminium alloy conductor, plasticity and
The stability and consistency of intensity and conductivity.Present inventor after a large amount of careful experimental studies by having found, to this
For the Al-Mg-Si-type aluminum alloy conducting wire of invention, Al-5Ti-0.5B rod of metal alloy than existing Al-5Ti-1B rod of metal alloy or
All there is Al-5Ti-1C rod of metal alloy stronger grain refining capability, the Al-5Ti-0.5B rod of metal alloy of addition 0.1~0.2%, aluminium to close
B containing 0.005~0.01% Ti and 0.0005~0.001% in golden conducting wire, can notable refining aluminum alloy conducting wire crystal grain, change
The structural homogenity of kind aluminium alloy conductor, improves the intensity and plasticity of aluminium alloy conductor.
Attached drawing 1 is please referred to, the manufacturing method of overhead stranded conductor aluminium alloy conductor of the present invention includes the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Fe is inevitable impurity element in aluminium ingot, can not only reduce the intensity of aluminium alloy conductor, can also reduce aluminium alloy and lead
The conductivity of line.The present invention selects Al99.85 trade mark remeltings to use aluminium ingot as main raw material(s), can control Impurity Fe
Content≤0.15%, single content≤0.01% of other impurity, total amount≤0.05% of other impurity, it is ensured that aluminium alloy conductor obtains
Obtain high intensity and high conductivity.
Second step：In heating furnace 760~780 DEG C by aluminium ingot heat melt, then be added account for raw material total weight 1.2~
1.4% magnesium ingot, 8~9% Al-20Si alloys, 0.1~0.2% Al-20Cr alloys, 0.1~0.2% Al-10V alloys and
0.1~0.15% mixed rare earth of lanthanum and cerium, stirring are fused into aluminum alloy melt；
Third walks：With purity be 99.99% argon gas and account for the refining agent of raw material total weight 0.5~1% to aluminum alloy melt in stove
Spray refining carries out degasification removal of impurities processing in 10~20 minutes, stands 30~60 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, the Al-5Ti-0.5B conjunctions for accounting for raw material total weight 0.1~0.2% are added
Golden bar carries out online crystal grain refinement processing；
5th step：It is 150~200 revs/min, purity of argon that aluminum alloy melt is flowed successively through to the rotary speed being arranged on chute
For 99.99%, argon flow amount be 1~2 cube m/h getter graphite rotator and porosity be 50~60ppi ceramic mistake
Filter plate carries out online degassing and filtration processing；
Stomata and the intensity that aluminium alloy conductor can be not only reduced the defects of being mingled with, can also reduce the conductivity of aluminium alloy conductor.For
Improve the cleanliness factor of aluminium alloy conductor, the present invention use first purity for 99.99% argon gas with account for raw material total weight 0.5
~1% refining agent carries out degasification removal of impurities processing in 10~20 minutes to aluminum alloy melt spray refining in stove, and aluminum alloy melt is flowed successively
Cross that the rotary speed being arranged on chute is 150~200 revs/min, purity of argon 99.99%, argon flow amount are 1~2 cube
M/h getter graphite rotator and ceramic filter plate that porosity is 50~60ppi carry out online degassing and filtration processing, most
The Gas content that can enable aluminum alloy to conducting wire eventually is less than 0.12 milliliter/100 grams aluminium, and non-metallic inclusion content PoDFA values are less than 0.06
Square millimeter/kilogram aluminium, increases substantially the cleanliness factor of aluminium alloy conductor, improves the intensity and conductivity of aluminium alloy conductor.
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, aluminum alloy melt temperature be 690 DEG C, conticaster crystallization rotation
Moving-wire speed is 17~18 ms/min, ultrasonic output frequency is 10~15kHz, ultrasonic power output is 800~1000 watts
Under the conditions of, by aluminum alloy melt continuous casting and rolling at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling is to room temperature
Carry out press quenching；
Structural constituent unevenness can not only reduce aluminium alloy conductor intensity and plasticity, also result in the intensity and conduction of aluminium alloy conductor
Upper fluctuation is larger along its length for rate, i.e., intensity and conductivity along its length on stability and consistency it is poor.In order to carry
The homogeneity of ingredients of high-aluminium alloy conducting wire, the present invention to aluminum alloy melt on the basis of carrying out online crystal grain refinement processing, then uses
High-power ultrasonic vibrations are stirred aluminium alloy, further increase the homogeneity of ingredients of aluminum alloy melt.
Present inventor by casting and rolling process parameter go deep into system research after find, cause aluminium alloy to be led
Line intensity along its length and conductivity fluctuations are big, and stability and poor another important factor in order of consistency are that aluminium closes
The casting temperature of golden liquid this is because the casting temperature of aluminum alloy melt fluctuates, and then can influence the solidification row of aluminum alloy melt
To change, the interior tissue form for eventually leading to Aluminum alloy round bar changes.In addition, the casting temperature hair of aluminum alloy melt
Raw fluctuation can influence the breaking down temperature of follow-up Aluminum alloy round bar again and finishing temperature fluctuates, and is finally the interior of Aluminum alloy round bar
Portion's tissue morphology fluctuates, and causes aluminium alloy conductor intensity along its length and conductivity fluctuations big.Therefore, in order to reduce
Because the fluctuation of aluminum alloy melt temperature causes the fluctuation of aluminium alloy conductor intensity and conductivity along its length, the present invention seriously to control
The casting temperature of aluminum alloy melt is 690 DEG C.Aluminum alloy melt temperature be 690 DEG C, conticaster crystallizing wheel rotation linear velocity be 17~
18 ms/min, ultrasonic output frequency be 10~15kHz, under the conditions of ultrasonic power output is 800~1000 watts, aluminium is closed
At the Aluminum alloy round bar of 9.5 millimeters of diameter, the structural constituent that can eliminate Aluminum alloy round bar is uneven, improves aluminium for golden liquid continuous casting and rolling
The structural constituent uniformity of alloy lead wire finally can not only improve the intensity and plasticity of aluminium alloy conductor, can also significantly carry
The intensity and conductivity of high-aluminium alloy conducting wire upward stability and consistency along its length.
7th step：Under conditions of passage drawing deformation amount is 1~2%, drawing speed is 9~12 meter per second, by aluminium alloy
Round bar is drawn into a diameter of 1~5 millimeter of aluminium alloy wire without torque；
The drawing process of Aluminum alloy round bar is to pass through a series of drawing mould by different die throat diameters to form Aluminum alloy round bar
Drawbench, be finally drawn into the aluminium alloy conductor of different-diameter size.The drum of traditional Aluminum alloy round bar drawing unit is
It is driven by the same variable-frequency motor, this drawing pattern is easy to enable aluminum alloy to generate sliding and aluminium alloy between conducting wire and drum
Conducting wire generates twisting, and the surface for eventually leading to aluminium alloy conductor occurs scratching and be broken, to reduce the life of aluminium alloy conductor
Produce stability and production efficiency.To solve the above-mentioned problems, the present invention is realized using separated motor transmission non-sliding type drawing unit
To Aluminum alloy round bar without torque drawing, its main feature is that：Each drum of drawing unit is individually driven by a variable-frequency motor, often
A drum is equipped with aluminium alloy conductor branching wheel and tension controller, and the rotating speed of each drum is fed back to signal by tension controller
PLC programmable logic controller (PLC)s, then by the variable-frequency motor rotating speed of each drum of PLC programmable logic controller (PLC) adjust automaticallies, from
And realize the adjust automatically of speed increasing ratio between drum, it is ensured that the Trace speed of aluminium alloy conductor and drum linear velocity phase in drawing process
Deng there is no sliding and frictions between aluminium alloy conductor and drum, and aluminium alloy conductor is avoided in drawing process to be produced along oneself axis
Raw torsion, realizes no torque drawing, avoids being broken in aluminium alloy conductor drawing process, improve aluminium alloy conductor drawing
The stability and production efficiency of production.
8th step：By aluminium alloy wire in 130~140 DEG C of timeliness 2~3 hours, when then proceeding to be warming up to 160~170 DEG C
Effect 5~6 hours, obtains overhead stranded conductor aluminium alloy conductor after furnace cooling.
Present inventor has found after carrying out system research to the aging technique of aluminium alloy conductor of the present invention, by aluminium
Alloy lead wire then proceeded to be warming up to 160~170 DEG C of timeliness 5~6 hours in 130~140 DEG C of timeliness 2~3 hours, with furnace cooling
But overhead stranded conductor aluminium alloy conductor is obtained afterwards, and the tensile strength of aluminium alloy conductor is more than 330MPa, and conductivity is more than 53%
IACS.If ageing stage, aging temp and aging time be not in above-mentioned matching range, when aluminium alloy conductor can all be owed
Effect or overaging problem, 330MPa is not achieved in the tensile strength of aluminium alloy conductor, and 53%IACS is also not achieved in conductivity.
In order to more describe the overhead stranded conductor aluminium alloy conductor and its manufacturing method of the present invention in detail, it is exemplified below several
Embodiment and comparative example is further described.
Embodiment 1：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.3%, Si 1.7%, La 0.1%, Ce
0.025%, Cr 0.03%, V 0.015%, Ti 0.0075%, B 0.00075%, Fe≤0.15%, surplus is for Al and unavoidably
Other impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturer of aluminium alloy conductor
Method includes the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：In heating furnace 770 DEG C by aluminium ingot heat melt, then be added account for raw material total weight 1.3% magnesium ingot,
8.5% Al-20Si alloys, 0.15% Al-20Cr alloys, 0.15% Al-10V alloys and 0.125% mixed rare earth of lanthanum and cerium,
Stirring is fused into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the carbon trichloride refining agent for accounting for raw material total weight 0.8% close aluminium in stove
Golden liquid spray refining carries out degasification removal of impurities processing in 15 minutes, stands 40 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, the Al-5Ti-0.5B rod of metal alloy for accounting for raw material total weight 0.15% is added
Carry out online crystal grain refinement processing；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 180 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 1.5 cubes ms/h are 55ppi into
The online degassing and filtration processing of row；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 17.5 ms/min, ultrasonic output frequency 12kHz, ultrasonic power output are 900 watts, by aluminium alloy
Liquid continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 1.5%, drawing speed is 11 meter per second, by Aluminum alloy round bar without torsion
Square is drawn into a diameter of 3 millimeters of aluminium alloy wire；
8th step：By aluminium alloy wire in 135 DEG C of timeliness 2.5 hours, then proceed to be warming up to 165 DEG C of timeliness 5.5 hours, with furnace cooling
But overhead stranded conductor aluminium alloy conductor is obtained afterwards.
Embodiment 2：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.2%, Si 1.8%, La 0.08%,
Ce 0.02%, Cr 0.04%, V 0.02%, Ti 0.005%, B 0.0005%, Fe≤0.15%, surplus is for Al and inevitably
Other impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturing method of aluminium alloy conductor
Include the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：Aluminium ingot is heated into fusing 780 DEG C in heating furnace, the magnesium ingot for accounting for raw material total weight 1.2%, 9% is then added
Al-20Si alloys, 0.2% Al-20Cr alloys, 0.2% Al-10V alloys and 0.1% mixed rare earth of lanthanum and cerium, stirring fusing
At aluminum alloy melt；
Third walks：With purity be 99.99% argon gas and account for the carbon trichloride refining agent of raw material total weight 1% to aluminium alloy in stove
Liquid spray refining carries out degasification removal of impurities processing in 10 minutes, stands 30 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, be added account for the Al-5Ti-0.5B rod of metal alloy of raw material total weight 0.1% into
The online crystal grain refinement processing of row；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 200 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 1 cube m/h are 50ppi carries out
Online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 17 ms/min, ultrasonic output frequency 10kHz, ultrasonic power output are 1000 watts, by aluminum alloy melt
Continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 2%, drawing speed is 9 meter per second, Aluminum alloy round bar is drawn without torque
Pull into a diameter of 1 millimeter of aluminium alloy wire；
8th step：By aluminium alloy wire in 140 DEG C of timeliness 2 hours, then proceed to be warming up to 160 DEG C of timeliness 6 hours, after furnace cooling
Obtain overhead stranded conductor aluminium alloy conductor.
Embodiment 3：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.4%, Si 1.6%, La 0.12%,
Ce 0.03%, Cr 0.02%, V 0.01%, Ti 0.01%, B 0.001%, Fe≤0.15%, surplus be Al and inevitably its
Its impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturing method packet of aluminium alloy conductor
Include following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：Aluminium ingot is heated into fusing 760 DEG C in heating furnace, the magnesium ingot for accounting for raw material total weight 1.4%, 8% is then added
Al-20Si alloys, 0.1% Al-20Cr alloys, 0.1% Al-10V alloys and 0.15% mixed rare earth of lanthanum and cerium, stirring is molten
It is melted into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the carbon trichloride refining agent for accounting for raw material total weight 0.5% close aluminium in stove
Golden liquid spray refining carries out degasification removal of impurities processing in 20 minutes, stands 60 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, be added account for the Al-5Ti-0.5B rod of metal alloy of raw material total weight 0.2% into
The online crystal grain refinement processing of row；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 150 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 2 cubes ms/h are 60ppi carries out
Online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 18 ms/min, ultrasonic output frequency 15kHz, ultrasonic power output are 800 watts, by aluminum alloy melt
Continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 1%, drawing speed is 12 meter per second, by Aluminum alloy round bar without torque
It is drawn into a diameter of 5 millimeters of aluminium alloy wire；
8th step：By aluminium alloy wire in 130 DEG C of timeliness 3 hours, then proceed to be warming up to 170 DEG C of timeliness 5 hours, after furnace cooling
Obtain overhead stranded conductor aluminium alloy conductor.
Comparative example 1：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.1%, Si 1.7%, La 0.1%, Ce
0.025%, Cr 0.03%, V 0.015%, Ti 0.0075%, B 0.00075%, Fe≤0.15%, surplus is for Al and unavoidably
Other impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturer of aluminium alloy conductor
Method includes the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：In heating furnace 770 DEG C by aluminium ingot heat melt, then be added account for raw material total weight 1.1% magnesium ingot,
8.5% Al-20Si alloys, 0.15% Al-20Cr alloys, 0.15% Al-10V alloys and 0.125% mixed rare earth of lanthanum and cerium,
Stirring is fused into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the carbon trichloride refining agent for accounting for raw material total weight 0.8% close aluminium in stove
Golden liquid spray refining carries out degasification removal of impurities processing in 15 minutes, stands 40 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, the Al-5Ti-0.5B rod of metal alloy for accounting for raw material total weight 0.15% is added
Carry out online crystal grain refinement processing；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 180 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 1.5 cubes ms/h are 55ppi into
The online degassing and filtration processing of row；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 17.5 ms/min, ultrasonic output frequency 12kHz, ultrasonic power output are 900 watts, by aluminium alloy
Liquid continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 1.5%, drawing speed is 11 meter per second, by Aluminum alloy round bar without torsion
Square is drawn into a diameter of 3 millimeters of aluminium alloy wire；
8th step：By aluminium alloy wire in 135 DEG C of timeliness 2.5 hours, then proceed to be warming up to 165 DEG C of timeliness 5.5 hours, with furnace cooling
But overhead stranded conductor aluminium alloy conductor is obtained afterwards.
Comparative example 2：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.2%, Si 1.8%, La 0.06%,
Ce 0.04%, Cr 0.04%, V 0.02%, Ti 0.005%, B 0.0005%, Fe≤0.15%, surplus is for Al and inevitably
Other impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturing method of aluminium alloy conductor
Include the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 60%, Ce 40%；
Second step：Aluminium ingot is heated into fusing 780 DEG C in heating furnace, the magnesium ingot for accounting for raw material total weight 1.2%, 9% is then added
Al-20Si alloys, 0.2% Al-20Cr alloys, 0.2% Al-10V alloys and 0.1% mixed rare earth of lanthanum and cerium, stirring fusing
At aluminum alloy melt；
Third walks：With purity be 99.99% argon gas and account for the carbon trichloride refining agent of raw material total weight 1% to aluminium alloy in stove
Liquid spray refining carries out degasification removal of impurities processing in 10 minutes, stands 30 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, be added account for the Al-5Ti-0.5B rod of metal alloy of raw material total weight 0.1% into
The online crystal grain refinement processing of row；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 200 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 1 cube m/h are 50ppi carries out
Online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 17 ms/min, ultrasonic output frequency 10kHz, ultrasonic power output are 1000 watts, by aluminum alloy melt
Continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 2%, drawing speed is 9 meter per second, Aluminum alloy round bar is drawn without torque
Pull into a diameter of 1 millimeter of aluminium alloy wire；
8th step：By aluminium alloy wire in 140 DEG C of timeliness 2 hours, then proceed to be warming up to 160 DEG C of timeliness 6 hours, after furnace cooling
Obtain overhead stranded conductor aluminium alloy conductor.
Comparative example 3：
Overhead stranded conductor aluminium alloy conductor is by following mass percent at being grouped as：Mg 1.4%, Si 1.6%, La 0.12%,
Ce 0.03%, Cr 0.02%, V 0.02%, Ti 0.01%, B 0.001%, Fe≤0.15%, surplus be Al and inevitably its
Its impurity, single content≤0.01% of other impurity, total amount≤0.05% of other impurity.The manufacturing method packet of aluminium alloy conductor
Include following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：Aluminium ingot is heated into fusing 760 DEG C in heating furnace, the magnesium ingot for accounting for raw material total weight 1.4%, 8% is then added
Al-20Si alloys, 0.1% Al-20Cr alloys, 0.2% Al-10V alloys and 0.15% mixed rare earth of lanthanum and cerium, stirring is molten
It is melted into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the carbon trichloride refining agent for accounting for raw material total weight 0.5% close aluminium in stove
Golden liquid spray refining carries out degasification removal of impurities processing in 20 minutes, stands 60 minutes after skimming again；
4th step：Aluminum alloy melt in stove is imported into chute, be added account for the Al-5Ti-0.5B rod of metal alloy of raw material total weight 0.2% into
The online crystal grain refinement processing of row；
5th step：Aluminum alloy melt flows successively through to the rotary speed being arranged on chute is 150 revs/min, purity of argon is
99.99%, the ceramic filter plate that the getter graphite rotator and porosity that argon flow amount is 2 cubes ms/h are 60ppi carries out
Online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Under the conditions of speed is 18 ms/min, ultrasonic output frequency 15kHz, ultrasonic power output are 800 watts, by aluminum alloy melt
Continuous casting and rolling is at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out press quenching；
7th step：Under conditions of passage drawing deformation amount is 1%, drawing speed is 12 meter per second, by Aluminum alloy round bar without torque
It is drawn into a diameter of 5 millimeters of aluminium alloy wire；
8th step：By aluminium alloy wire in 130 DEG C of timeliness 3 hours, then proceed to be warming up to 170 DEG C of timeliness 5 hours, after furnace cooling
Obtain overhead stranded conductor aluminium alloy conductor.
It is sampled on the aluminium alloy conductor of Examples 1 to 3 and comparative example 1~3, it is enterprising in NYP2009 type electronic tensile machines
Row room temperature tensile, tensile speed are 2 mm/min, detect the tensile strength and elongation after fracture of aluminium alloy conductor, as a result such as table 1
It is shown.The conductivity of aluminium alloy conductor is measured on WCW0603 type direct-flow double bridges, the results are shown in Table 1.
It can be seen from 1 testing result of table, the tensile strength of the aluminium alloy conductor of the embodiment of the present invention 1~3 is more than 330MPa, has no progeny
Elongation is more than 4.5%, and conductivity is more than 53%IACS.The aluminium alloy conductor of comparative example 1 leads to aluminium since Mg contents are less than 1.2%
The intensity of alloy lead wire is less than 330MPa.The aluminium alloy conductor of comparative example 2 is not equal to 4 due to the mass ratio of La and Ce:1, cause
The conductivity of aluminium alloy conductor is less than 53%IACS.The aluminium alloy conductor of comparative example 3 is not equal to 2 due to the mass ratio of Cr and V:1,
The intensity of aluminium alloy conductor is caused to be less than 330MPa.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other variations of disclosed embodiment, are such as readily apparent that the professional person of this field, such variation should belong to
Within the scope of the claims in the present invention limit.
Claims (2)
1. a kind of overhead stranded conductor aluminium alloy conductor, it is characterised in that by following mass percent at being grouped as：Mg 1.2~
1.4%, Si 1.6~1.8%, La 0.08~0.12%, Ce 0.02~0.03%, Cr 0.02~0.04%, V 0.01~0.02%,
Ti 0.005~0.01%, B 0.0005~0.001%, Fe≤0.15%, surplus other impurity for Al and inevitably, wherein
The mass ratio of La and Ce is 4:The mass ratio of 1, Cr and V is 2:The mass ratio of 1, Ti and B is 10:1, the single content of other impurity
≤ 0.01%, total amount≤0.05%.
2. a kind of method of overhead stranded conductor aluminium alloy conductor described in manufacturing claims 1, it is characterised in that include the following steps：
The first step：Al99.85 trade mark remeltings aluminium ingot, Mg9990 trades mark primary magnesium ingot, Al-20Si alloys, Al-20Cr is selected to close
Gold, Al-10V alloys, Al-5Ti-0.5B rod of metal alloy and mixed rare earth of lanthanum and cerium are raw material, the ingredient and matter of mixed rare earth of lanthanum and cerium
Measuring percentage is：La 80%, Ce 20%；
Second step：Aluminium ingot is heated at 760~780 DEG C and is melted, the magnesium ingot for accounting for raw material total weight 1.2~1.4%, 8 are then added
~9% Al-20Si alloys, 0.1~0.2% Al-20Cr alloys, 0.1~0.2% Al-10V alloys and 0.1~0.15%
Mixed rare earth of lanthanum and cerium, stirring are fused into aluminum alloy melt；
Third walks：The argon gas for being 99.99% with purity and the refining agent for accounting for raw material total weight 0.5~1% are blown aluminum alloy melt
Refining carries out degasification removal of impurities processing in 10~20 minutes, stands 30~60 minutes after skimming again；
4th step：Aluminum alloy melt is imported into chute, the Al-5Ti-0.5B rod of metal alloy for accounting for raw material total weight 0.1~0.2% is added
Carry out online crystal grain refinement processing；
5th step：It is 150~200 revs/min, purity of argon that aluminum alloy melt is flowed successively through to the rotary speed being arranged on chute
For 99.99%, argon flow amount be 1~2 cube m/h getter graphite rotator and porosity be 50~60ppi ceramic mistake
Filter plate carries out online degassing and filtration processing；
6th step：Aluminum alloy melt is flowed into continuous casting and continuous rolling mill, is 690 DEG C, conticaster crystallizing wheel rotational line in aluminum alloy melt temperature
Speed is 17~18 ms/min, ultrasonic output frequency is 10~15kHz, ultrasonic power output is 800~1000 watts of conditions
Under, by aluminum alloy melt continuous casting and rolling at the Aluminum alloy round bar of 9.5 millimeters of diameter, and Aluminum alloy round bar Water cooling to room temperature carries out
Press quenching；
7th step：Under conditions of passage drawing deformation amount is 1~2%, drawing speed is 9~12 meter per second, by Aluminum alloy round bar
No torque is drawn into a diameter of 1~5 millimeter of aluminium alloy wire；
8th step：By aluminium alloy wire in 130~140 DEG C of timeliness 2~3 hours, then proceed to be warming up to 160~170 DEG C of timeliness 5~
6 hours, overhead stranded conductor aluminium alloy conductor is obtained after furnace cooling.
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