CN106555083B - A kind of all aluminium alloy aerial condutor and preparation method thereof - Google Patents
A kind of all aluminium alloy aerial condutor and preparation method thereof Download PDFInfo
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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- 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
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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Abstract
A kind of method that the present invention provides all aluminium alloy aerial condutor and its preparation, the composition of all aluminium alloy aerial condutor is made up of Al, Mg, Si, Mo, Re, Se, Sc, Nb, Ru, Zr, its Vickers hardness is not less than 100HV, room temperature tensile intensity is not less than 330Mpa, elongation is not less than 7%, and conductance is not less than 57%IACS；Product long-time temperature in use is not less than 100 DEG C, and after 230 DEG C of laser heatings 1 hour, intensity survival rate is not less than 85%.Method of the present invention, obtained by step process such as alloying three times, Metamorphism treatment, melt refining, as cast condition bar material annealing, cold drawings, it is final to realize the product with excellent physical and chemical performance.The present invention uses general industry level aluminium ingot to be produced for raw material, and production cost is suitable with conventional aluminum alloys wire cost, and its Vickers hardness, room temperature tensile intensity, elongation, conductance significantly improve compared with existing product.
Description
Technical field
The invention belongs to transmission facility technical field, more particularly to overhead power transmission wire rod and its technology of preparing, has high-strength
Degree and high conductivity, and in particular to a kind of all aluminum alloy conductor and preparation method thereof.
Background technology
In the last few years, as the sustained, rapid and sound development of China's economy, power industry are sent out as the guarantee of national economy
Exhibition is very rapid, gradually forms the strategic general layout of " transferring electricity from the west to the east, north and south supply mutually, national network ", remote, high power transmission line
Road it is newly-built with transform it is also imperative.The carrier of overhead power transmission conducting wire and its infrastructure as delivery circuit, in power transmission line
Occupy highly important status in road.
Wire major part is still traditional steel-cored aluminium strand used in existing overhead transmission line at present in China, is existed
The shortcomings that drawing again than relatively low, sag poor performance, the small, corrosion-resistant of current-carrying capacity etc. clearly.With traditional steel-cored aluminium strand
Compare, aluminium alloy frame hollow wire has the obviously advantage such as light energy conservation, specific strength height, good corrosion resistance, thus near
Increasing concern has been obtained over year.The problem of yet with design of material and manufacturing technology, existing aluminium alloy conductor manufacture
There is the outstanding problem for being difficult to take into account conductance and intensity in technology, its intensity-conductance combination property fails to reach desirable level.
In addition, the use range of overhead transmission line is especially extensive, how on the premise of product strength is ensured, further
The heat resistance of aerial condutor is improved, so as to improve the current-carrying capacity of transmission line of electricity, there will be great economic benefit to be imitated with society
Benefit.
In summary, for the requirement of power transmission network practical service environment and technology trends：It is badly in need of what is solved first
It is the outstanding problem that conductance and intensity can not be taken into account present in existing aerial condutor technology of preparing, i.e., how provides a kind of same
When possess the aluminium alloy conductor and preparation method of high-strength high-conductivity, be scientific research institution and the emphasis that solves is badly in need of in manufacturing enterprise
Problem.In addition, if the heat resistance of wire can be taken into account again simultaneously, the temperature in use of material will can be improved, in same conductivity
Under the conditions of, using the teaching of the invention it is possible to provide bigger power delivery capabilities, the application of such product will have more preferable society generalization potentiality.
The content of the invention
The purpose of the present invention is for that can not take into account the prominent of conductance and intensity existing for existing aerial condutor technology of preparing
Go wrong, there is provided a kind of aluminium alloy conductor for obtaining high-strength high-conductivity and preparation method thereof.
The present invention realizes that above-mentioned purpose is adopted the technical scheme that：
A kind of all aluminium alloy aerial condutor, by 0.05-0.4wt%Mg, 0.05-0.4 wt% Si, 0.02-0.1wt%
Mo, 0.05-0.1wt%Re, 0.05-0.1wt%Se, 0.05-0.3Sc wt%, 0.02-0.1 wt% Nb, 0.02-
0.3Ru, 0.02-0.5 wt% Zr, the elemental composition that surplus is Al form.
At room temperature, the Vickers hardness of this all aluminium alloy aerial condutor is not less than 100HV, and room temperature tensile intensity is not less than
330Mpa, elongation are not less than 7%, and conductance is not less than 57.0% IACS,（International Annealed Copper
Standard）.
The sectional area formed by this all aluminium alloy aerial condutor process is 400mm2, power transmission line that length is 10m, be powered straight
Temperature to power transmission line itself rises and stably at 100 DEG C, and its current-carrying capacity is not less than 1400A.
The method for preparing all aluminium alloy aerial condutor of the present invention, is carried out as follows:
Step 1：Alloying ingredient, carry out an alloying smelting：
Take industrial aluminium, Al-Si intermediate alloys, metal Re, Al2(SeO3)3Powder, Al-Sc intermediate alloys, metal Ru blocks
With Al-Zr intermediate alloys, smelting furnace fusing and insulation are uniformly loaded after mixing, obtains an alloyed aluminium-alloy melt.
Step 2:Ball milling Mo, Nb powder, prepares alloying additive, carries out secondary alloyed melting.
Step 3:Secondary alloyed melt is added into an alloy melt, prepares cda alloy melt.
Step 4:Mg is added in cda alloy melt, Zr elements, carries out alloying and Metamorphism treatment three times.
Step 5:Aluminium alloy melt refines.
Step 6：A diameter of 10.0-12.0mm Aluminum alloy pole material is prepared by up-drawing method.
Step 7：As cast condition bar material makes annealing treatment.
Step 8：At room temperature, by 5-7 passages, annealing, bar material is cold drawn to pull into 3.0-4.0mm wire rods.
Step 9：The processing of cold drawing wire rod low temperature aging.
Furtherly, the method for preparing all aluminium alloy aerial condutor of the present invention, is specifically realized as follows：
Step 1：Take material：Al-Si intermediate alloys, the 0.050- of 90.000Kg industrial aluminiums, 0.250-2.000Kg
0.100Kg metals Re, 0.090-0.180Kg Al2(SeO3)3Powder, 2.500kg-15.000Kg Al-Sc intermediate alloys,
0.020-0.300Kg metal Ru blocks, uniformly load smelting furnace burner hearth after mixing, the body of heater of melting furnace makes material fully melt
Afterwards, then by temperature 700-750 DEG C is risen to, after being incubated 1 hour, stops heating, obtain an alloyed aluminium-alloy melt.
Step 2：0.500Kg Mo powder is uniformly mixed with 0.500Kg Nb powder, after carrying out ball milling, takes out ball milling powder,
Diameter 10.0mm, height 6.0mm block materials are pressed into, and are sintered at 1200-1300 DEG C, then by block material
After material is broken into fritter sample, weigh 0.040-0.200Kg, after uniformly being mixed with 10.000Kg industrial aluminiums, loads burner hearth, adds
Hot stove body, make the mixture of Mo powder, Nb powder and industrial aluminium fully melt, be subsequently heated to 800-850 DEG C, after being incubated 1 hour,
Stop heating, obtain secondary alloyed aluminium alloy melt.
Step 3：The secondary alloyed aluminium alloy melt that step 2 is obtained, pass through the once conjunction obtained by steady implantation step 1
In aurification aluminium alloy melt, heating furnace body, make body of heater after 700-750 DEG C is incubated 10 minutes, open magnetic stirrer, stirring 30
After minute, cda alloy aluminium alloy melt is obtained.
Step 4：With dry aluminium foil tight 0.050-0.400Kg metal Mg blocks, using pressing spoon by the metal of parcel
Mg blocks and 0.400-10.000Kg Al-Zr intermediate alloys are pressed into the cda alloy aluminium alloy melt of gained in step 3 successively,
Body of heater is set to obtain Metamorphism treatment aluminium alloy melt after 750-800 DEG C is incubated 30 minutes.
Step 5：Magnetic stirrer is opened, the electricity of 30 minutes is carried out to the Metamorphism treatment aluminium alloy melt obtained by step 4
Magnetic stirs, and melting furnace, makes body of heater after 700-750 DEG C is incubated 10 minutes, adds 0.500Kg carbon trichloride refining agents and enters
Row is refined and removed the gred, aluminium alloy melt after being refined.
Step 6：By aluminium alloy melt after the refining obtained by step 5 after 700 DEG C of insulations stand 1 hour, by upper leading-in device
Insertion aluminium liquid carries out drawing bar, prepares a diameter of 10.0-12.0mm of aluminium alloy aluminium alloy rod material, and be curled into a diameter of 1.5-
2.0m disk line, obtain as cast condition disk line.
Step 7：Step 6 gained as cast condition disk line is placed into annealing furnace to be made annealing treatment, 200-400 DEG C of holding temperature,
After soaking time 2-4 hours, disk line is taken out, is placed in air and is allowed to natural cooling, obtain leer pan line.
Step 8：By step 7 gained leer pan line, using continuous drawing device, 5-7 passage drawings are carried out at room temperature, are prepared
Into a diameter of 3.0-4.0mm wire rod, cold drawing wire rod is obtained.
Step 9：Step 8 gained cold drawing wire rod is placed into low temperature aging stove, 3-5 is incubated under the conditions of 160-180 DEG C
After hour, natural cooling in air is placed in after taking-up, obtains finished product.
Furtherly, in step 1, the purity of industrial aluminium is 99.7%.The composition of Al-Si intermediate alloys is 20%
WtSi and 80wt%Al.The composition of Al-Sc intermediate alloys is 2wt%Sc and 98wt%Al.The composition of Al-Zr intermediate alloys is 5wt%
Zr, 95wt%Al.
Furtherly, in step 2, the purity of Mo powder is 99.9%.The purity of industrial aluminium is 99.7%.
Furtherly, in step 4, metal Mg blocks and aluminium foil and mass ratio be not less than 5:1.Al-Zr intermediate alloys
Composition be 5wt%Zr, 95wt%Al.
Furtherly, in step 8, the drawing of 5-7 passages is carried out at room temperature.
Furtherly, the previous three passes drawing reducing rate in the drawing of 5-7 passages is controlled 2.5 ~ 3: 2-~2.5 : 1
In the range of.
Beneficial technique effect
The present invention provides a kind of all aluminium alloy aerial condutor preparation method, is set by the double optimization of composition and preparation technology
Meter, by specific process conditions, the beneficial effect for playing every kind of alloy element is maximized, final products performance is reached excellent
Different mechanics-conductive combination property：Room temperature Vickers hardness is not less than 100HV, and room temperature tensile intensity is not less than 330Mpa, elongation
Not less than 7%, conductance is not less than 57% IACS.
The present invention uses general industry level aluminium ingot (99.7%) to be produced for raw material, to it by the way of addition trace element
Performance is adjusted, and can be produced using the existing equipment of factory, without adding extra equipment, opening up extra factory building
Space, therefore production cost is suitable with conventional aluminum alloys wire product.Therefore the present invention has that production cost is low, technique is simple, production
Product mechanical property and electric conductivity it is excellent, stably, uniform effect
The present invention makes refractory element Mo, Nb in the form of secondary alloyed melt, uniformly note by secondary alloyed mode
Enter an alloying melt, and using the adhesion effect between different-alloy element, make main alloying elements and micro conjunction
Alloying element forms equally distributed microcell elementide, obtains highly alloyed melt by way of nearly reaction in-situ.
The present invention is directed to Mo, Nb element of infusibility, by high-energy ball milling mode, destroys similar interatomic interaction
, to reach the purpose for forcing solid solution, micro- Mo, Nb is uniformly distributed in strict accordance with best proportion, and closed by Mo-Nb
Bronze compacting-diffusion-sintering is blocking-broken mode again, Mo-Nb alloy additions are prepared, are added to secondary alloyed melt
In.
By above-described melt alloying mode, proportion, vapour pressure, fusing point and other physical properties can be made poor
The alloy element of different increasing, is dissolved in aluminium alloy melt in a manner of maximally efficient.Meanwhile using make annealing treatment as cast condition pole stock and
Low temperature aging processing is carried out to cold drawing wire rod, makes the abundant Precipitation of alloying element, completed matrix is purified, plays maximum limit
Degree improves the effect of conductance.
Compared with existing steel-cored aluminium strand, the product of the inventive method production, its D.C. resistance reduces 2.6%, unit
The weight of volume reduces 10%, and sag characteristic is significantly larger than traditional steel-cored aluminium strand, thus is a kind of new energy-saving light
Matter transmission pressure.Meanwhile for newly-built circuit, from the product of the invention prepared, tower can be increased away from reduction tower
Height, line construction cost is greatly reduced, there is the stronger market competitiveness.
In summary, a kind of method that the present invention provides all aluminium alloy aerial condutor and its preparation, using general industry level
Aluminium ingot produces for raw material, and production cost is suitable with conventional aluminum alloys wire cost, passes through alloying three times, Metamorphism treatment, melt
The step process such as refining, as cast condition bar material annealing, cold drawing obtain, final to realize the product with excellent physical and chemical performance, its
Vickers hardness, room temperature tensile intensity, elongation, conductance significantly improve compared with existing product.Its typical performance indications is：Room temperature
Vickers hardness is not less than 100HV, and room temperature tensile intensity is not less than 330Mpa, and elongation is not less than 7%, and conductance is not less than 57%
IACS。
It is noted that compared with traditional steel-cored aluminium strand, this product has good heat resistance, and its is long-term
Temperature in use is not less than 100 DEG C.
The heat resistance of product of the present invention is better than steel-cored aluminium strand, suitable with existing heat-resisting wire.But due to the present invention
Product electric conductivity is far above steel-cored aluminium strand and existing heat-resisting wire, thus temperature rise is small in the case of same current, therefore this
Product has bigger current-carrying capacity.
It is 400mm by product process sectional area of the present invention2, length be 2m wire, both ends power-up, make the wire gradually rise
Temperature, until its temperature stabilization, at 100 DEG C, now the current-carrying capacity of the wire is not less than 1400A.
Embodiment
The technical characterstic of the present invention and performance advantage is expanded on further in conjunction with specific embodiment.
Embodiment 1
The first step:Alloying ingredient, carry out an alloying smelting
By 90kg industrial aluminiums (99.99% purity), 0.250kg Al-Si intermediate alloys (20%Si, 80wt%Al),
0.050kg metals Re, 0.090kg Al2(SeO3)3Powder, 2.5kg Al-Sc intermediate alloys (2wt%Sc, 98wt%Al),
0.030kg Ru blocks uniformly after mixing, load 1# smelting furnace burner hearths, and heating furnace body makes material fully melt, and by aluminium alloy melt
700-750 DEG C is heated to, after being incubated 1 hour, stops heating, obtains an alloyed aluminium-alloy melt.
Second step：Ball milling Mo, Nb powder, prepares alloying additive, carries out secondary alloyed melting
The pure Mo powder of 500g is uniformly mixed with 500gNb powder, is put into the stainless steel grinding jar of KQM-X4 type planetary ball mills
In, by 5:1 number, diameter 8mm and 20mm hard alloy abrading-ball are put into, high purity argon is passed through after sealing, and (purity is
99.99%) to reduce sample oxidation, after carrying out high-energy ball milling, after ball grinder fully cools to room temperature, ball milling powder is taken out, is used
Forming agent of the ethylene glycol as mixed-powder, mixed-powder is pre-pressed into hydraulic press under 30Mpa pressure and is pressed into diameter
10mm, height 6mm block materials, using model FVPHP-R-10FRET-40 vacuum pressure sintering furnace, under an argon
Low pressure sintering processing is carried out, 1200 DEG C, pressure 10Mpa of sintering temperature, soaking time 1 hour, the block after sintering is broken into
The fragment that dimensional attributes are about 2-3mm.Weigh 0.08kg, and is uniformly mixed with 10Kg industrial aluminiums (99.99% purity), loads
2# crucible furnace burner hearths, 800 DEG C of furnace body temperature is set, material is fully melted, and be incubated 1 hour, stopped heating, obtain secondary conjunction
Aurification aluminium alloy melt.
3rd step:Secondary alloyed melt is added into an alloy melt
The secondary alloyed aluminium alloy melt that second step is obtained, an alloy of 1# smelting furnaces is steadily injected by funnel
Change in aluminium alloy melt, 710 DEG C of setting melting furnace temperature, after being incubated 10 minutes, stirred 30 minutes with graphite rod, obtain integrating conjunction
Aurification aluminium alloy melt
4th step:Mg is added, Zr elements, carries out alloying and Metamorphism treatment three times.
With dry aluminium foil tight 0.4kg metal Mg blocks, using pressing spoon by the metal Mg blocks of parcel and 0.5kg Al-
Zr intermediate alloys are pressed into the cda alloy aluminium alloy melt of gained in the 3rd step successively, obtain Metamorphism treatment aluminium alloy melt.
5th step：Aluminium alloy melt refines
Magnetic stirrer is opened, by the electromagnetic agitation of 30 minutes, melting furnace, makes body of heater in 700-750 DEG C of insulation
After 10 minutes, add 500g carbon trichloride refining agents and refined and removed the gred, aluminium alloy melt after being refined.
6th step:A diameter of 12mm Aluminum alloy pole material is prepared by up-drawing method
By aluminium alloy melt after the refining obtained by the 5th step after 700 DEG C of insulations stand 1 hour, make residual gas from aluminium liquid
In overflow completely, while make the impurity in aluminium liquid, liter floats to aluminium liquid surface, is cleared up by the secondary slag that pulls out, the aluminium for obtaining cleaning closes
Golden liquid.Crystallizer accesses water pipe after pressure testing, and hydraulic pressure control is controlled at 20-25 DEG C in 0.15-0.2MaP, coolant-temperature gage, protected
Water holding road is unimpeded.Leader is connect drawing rod and loading onto, crystallizer is inserted, carries out drawing bar, prepare a diameter of 12mm bar material, and be curled into
A diameter of 2m disk line, obtain as cast condition disk line.
7th step:As cast condition disk line makes annealing treatment
As cast condition disk line obtained by 6th step is placed into bell-type annealing furnace to be made annealing treatment, design temperature is 320 DEG C, is treated
After temperature thermocouple reaches 320 DEG C, start timing, soaking time is after 3 hours, takes out disk line, is placed in air that to be allowed to nature cold
But, leer pan line is obtained.
8th step：Leer pan line is cold drawn to pull into 3.5mm wire rods
By in the 8th step gained leer pan line, using continuous drawing device, at room temperature by 5 passages, it then follows 12mm → 8mm
→ 5.8mm → 5.1mm → 4mm → 3.5mm order, drawing are prepared into a diameter of 3.5mm wire rod.
9th step：The processing of cold drawing wire rod low temperature aging
Gained cold drawing wire rod in 8th step is placed into low temperature aging stove, 180 DEG C of design temperature, to temperature after be incubated 5
Hour, wire rod is taken out, natural cooling in air is placed in, obtains finished product.
Through Atomic Emission Spectrometer AES, the inspection of the equipment such as direct-reading spectrometer, X-ray diffractometer, ESEM, transmission electron microscope
Survey and be mutually authenticated, the composition by the product obtained by embodiment 1 is:By 0.362wt%Mg, 0.0624wt% Si,
0.0426wt% Mo, 0.0562wt%Re, 0.0522wt%Se, 0.0512Sc wt%, 0.0433 wt% Nb,
0.0382Ru, 0.0311 wt% Zr, the elemental composition that surplus is Al form.
Detection through micro Vickers, omnipotent testing machine for mechanical properties, conductivity measurement again, at room temperature, this
The Vickers hardness average value 102HV of all aluminium alloy aerial condutor, room temperature tensile average strength 332Mpa, elongation average value
7.2%, the IACS of conductance average value 57.1%.
Product long-time temperature in use is not less than 100 DEG C, and after 230 DEG C of laser heatings 1 hour, intensity survival rate is not
Less than 85%.
It is 400mm to be stranding into a sectional area from the said goods2, wire that length is 2m, be powered until wire itself
Temperature rise and stably at 100 DEG C, its current-carrying capacity is about 1412A.
Embodiment 2
The first step:Alloying ingredient, carry out an alloying smelting
By 90kg industrial aluminiums (99.99% purity), 1kg Al-Si intermediate alloys (20%Si, 80wt%Al), 0.080kg gold
Belong to Re, 0.15kg Al2(SeO3)3Powder, 5kg Al-Sc intermediate alloys (2wt%Sc, 98wt%Al), 0.080kg Ru blocks are uniform
After mixing, load 1# smelting furnace burner hearths, heating furnace body makes material fully melt, and aluminium alloy melt is heated into 750 DEG C, insulation
After 1 hour, stop heating, obtain an alloyed aluminium-alloy melt.
Second step：Ball milling Mo, Nb powder, prepares alloying additive, carries out secondary alloyed melting
The pure Mo powder of 500g is uniformly mixed with 500gNb powder, is put into the stainless steel grinding jar of KQM-X4 type planetary ball mills
In, by 5:1 number, diameter 8mm and 20mm hard alloy abrading-ball are put into, high purity argon is passed through after sealing, and (purity is
99.99%) to reduce sample oxidation, after carrying out high-energy ball milling, after ball grinder fully cools to room temperature, ball milling powder is taken out, is used
Forming agent of the ethylene glycol as mixed-powder, mixed-powder is pre-pressed into hydraulic press under 30Mpa pressure and is pressed into diameter
10mm, height 6mm block materials, using model FVPHP-R-10FRET-40 vacuum pressure sintering furnace, under an argon
Low pressure sintering processing is carried out, 1200 DEG C, pressure 10Mpa of sintering temperature, soaking time 1 hour, the block after sintering is broken into
The fragment that dimensional attributes are about 2-3mm.Weigh 0.1kg, and is uniformly mixed with 10Kg industrial aluminiums (99.99% purity), loads 2#
Crucible furnace burner hearth, 800 DEG C of furnace body temperature is set, material is fully melted, and be incubated 1 hour, stopped heating, obtain secondary alloy
Change aluminium alloy melt.
3rd step:Secondary alloyed melt is added into an alloy melt
The secondary alloyed aluminium alloy melt that second step is obtained, an alloy of 1# smelting furnaces is steadily injected by funnel
Change in aluminium alloy melt, 720 DEG C of setting melting furnace temperature, after being incubated 10 minutes, stirred 30 minutes with graphite rod, obtain integrating conjunction
Aurification aluminium alloy melt
4th step:Mg is added, Zr elements, carries out alloying and Metamorphism treatment three times.
With dry aluminium foil tight 0.3kg metal Mg blocks, using pressing spoon by the metal Mg blocks of parcel and 1kg Al-Zr
Intermediate alloy is pressed into the cda alloy aluminium alloy melt of gained in the 3rd step successively, obtains Metamorphism treatment aluminium alloy melt.
5th step：Aluminium alloy melt refines
Magnetic stirrer is opened, by the electromagnetic agitation of 30 minutes, melting furnace, makes body of heater in 700-750 DEG C of insulation
After 10 minutes, add 500g carbon trichloride refining agents and refined and removed the gred, aluminium alloy melt after being refined.
6th step:A diameter of 12mm Aluminum alloy pole material is prepared by up-drawing method
By aluminium alloy melt after the refining obtained by the 5th step after 720 DEG C of insulations stand 1 hour, make residual gas from aluminium liquid
In overflow completely, while make the impurity in aluminium liquid, liter floats to aluminium liquid surface, is cleared up by the secondary slag that pulls out, the aluminium for obtaining cleaning closes
Golden liquid.Crystallizer accesses water pipe after pressure testing, and hydraulic pressure control is controlled at 20-25 DEG C in 0.15-0.2MaP, coolant-temperature gage, protected
Water holding road is unimpeded.Leader is connect drawing rod and loading onto, crystallizer is inserted, carries out drawing bar, prepare a diameter of 12mm bar material, and be curled into
A diameter of 2m disk line, obtain as cast condition disk line.
7th step:As cast condition disk line makes annealing treatment
As cast condition disk line obtained by 6th step is placed into bell-type annealing furnace to be made annealing treatment, design temperature is 300 DEG C, is treated
After temperature thermocouple reaches 300 DEG C, start timing, soaking time is after 4 hours, takes out disk line, is placed in air that to be allowed to nature cold
But, leer pan line is obtained.
8th step：Leer pan line is cold drawn to pull into 3.5mm wire rods
By in the 8th step gained leer pan line, using continuous drawing device, at room temperature by 5 passages, it then follows 12mm → 8mm
→ 5.8mm → 5.1mm → 4mm → 3.5mm order, drawing are prepared into a diameter of 3.5mm wire rod.
9th step：The processing of cold drawing wire rod low temperature aging
Gained cold drawing wire rod in 8th step is placed into low temperature aging stove, 170 DEG C of design temperature, to temperature after be incubated 4
Hour, wire rod is taken out, natural cooling in air is placed in, obtains finished product.
Through Atomic Emission Spectrometer AES, the inspection of the equipment such as direct-reading spectrometer, X-ray diffractometer, ESEM, transmission electron microscope
Survey and be mutually authenticated, the composition by the product obtained by embodiment 1 is:By 0.298wt%Mg, 0.228wt% Si,
0.0511wt% Mo, 0.0793wt%Re, 0.0771wt%Se, 0.08Sc wt%, 0.0521 wt% Nb, 0.0733Ru,
0.0461 wt% Zr, the elemental composition that surplus is Al form.
Detection through micro Vickers, omnipotent testing machine for mechanical properties, conductivity measurement again, at room temperature, this
The Vickers hardness average value 105HV of all aluminium alloy aerial condutor, room temperature tensile average strength 335Mpa, elongation average value
8.1%, the IACS of conductance average value 58.1%.
Product long-time temperature in use is not less than 100 DEG C, and after 230 DEG C of laser heatings 1 hour, intensity survival rate is not
Less than 85%.
It is 400mm by piece sectional area of product process of embodiment 22, length be 4m material of the present invention wire, be powered
Until the temperature of wire itself rises and stably at 100 DEG C, it is about 1411A to survey its current-carrying capacity.
Claims (6)
1. prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that：Carry out as follows：
Step 1：Take material：Al-Si intermediate alloys, the 0.050-0.100Kg of 90.000Kg industrial aluminiums, 0.250-2.000Kg
Metal Re, 0.090-0.180Kg Al2(SeO3)3Powder, 2.500kg-15.000Kg Al-Sc intermediate alloys, 0.020-
0.300Kg metal Ru blocks, smelting furnace burner hearth is uniformly loaded after mixing, after the body of heater of melting furnace makes material fully melt, then
Temperature is risen to 700-750 DEG C, after being incubated 1 hour, stops heating, obtains an alloyed aluminium-alloy melt；
Step 2：0.500Kg Mo powder is uniformly mixed with 0.500Kg Nb powder, after carrying out ball milling, takes out ball milling powder, compacting
Into diameter 10.0mm, height 6.0mm block materials, and it is sintered at 1200-1300 DEG C, then breaks block materials
After being broken into fritter sample, weigh 0.040-0.200Kg, after uniformly being mixed with 10.000Kg industrial aluminiums, loads burner hearth, heating furnace
Body, make the mixture of Mo powder, Nb powder and industrial aluminium fully melt, be subsequently heated to 800-850 DEG C, after being incubated 1 hour, stop
Heating, obtains secondary alloyed aluminium alloy melt；
Step 3：The secondary alloyed aluminium alloy melt that step 2 is obtained, an alloying as obtained by steady implantation step 1
In aluminium alloy melt, heating furnace body, body of heater is opened magnetic stirrer after 700-750 DEG C is incubated 10 minutes, stir 30 minutes
Afterwards, cda alloy aluminium alloy melt is obtained；
Step 4：With dry aluminium foil tight 0.050-0.400Kg metal Mg blocks, using pressing spoon by the metal Mg blocks of parcel
It is pressed into the cda alloy aluminium alloy melt of gained in step 3 successively with 0.400-10.000Kg Al-Zr intermediate alloys, makes stove
Body obtains Metamorphism treatment aluminium alloy melt after 750-800 DEG C is incubated 30 minutes；
Step 5：Magnetic stirrer is opened, the electromagnetism carried out 30 minutes to the Metamorphism treatment aluminium alloy melt obtained by step 4 stirs
Mix, and melting furnace, make body of heater after 700-750 DEG C is incubated 10 minutes, add 0.500Kg carbon trichlorides refining agent and carry out essence
Refine and remove the gred, aluminium alloy melt after being refined；
Step 6：By aluminium alloy melt after the refining obtained by step 5 after 700 DEG C of insulations stand 1 hour, upper leading-in device is inserted
Aluminium liquid carries out drawing bar, prepares a diameter of 10.0-12.0mm of aluminium alloy aluminium alloy rod material, and is curled into a diameter of 1.5-2.0m's
Disk line, obtain as cast condition disk line；
Step 7：Step 6 gained as cast condition disk line is placed into annealing furnace to be made annealing treatment, 200-400 DEG C of holding temperature, be incubated
After hour time 2-4, disk line is taken out, is placed in air and is allowed to natural cooling, obtain leer pan line；
Step 8：By step 7 gained leer pan line, a diameter of 3.0-4.0mm wire rod is prepared into using continuous drawing device, is obtained
Cold drawing wire rod；
Step 9：Step 8 gained cold drawing wire rod is placed into low temperature aging stove, 3-5 hours are incubated under the conditions of 160-180 DEG C
Afterwards, natural cooling in air is placed in after taking-up, obtains finished product；The finished product by 0.05-0.4wt%Mg, 0.05-0.4wt%Si,
0.02-0.1wt%Mo, 0.05-0.1wt%Re, 0.05-0.1wt%Se, 0.05-0.3Sc wt%, 0.02-0.1wt%Nb,
0.02-0.3Ru, 0.02-0.5wt%Zr, the elemental composition that surplus is Al form；
At room temperature, the Vickers hardness of this all aluminium alloy aerial condutor is not less than 100HV, and tensile strength is not less than 330Mpa, stretched
Long rate is not less than 7%, and conductance is not less than 55%IACS.
2. according to claim 1 prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that:In step 1,
The purity of industrial aluminium is 99.7%；The composition of Al-Si intermediate alloys is 20%wtSi and 80wt%Al；Al-Sc intermediate alloys
Composition be 2wt%Sc and 98wt%Al.
3. according to claim 1 prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that:In step 2,
The purity of Mo powder is 99.9%；The purity of industrial aluminium is 99.7%.
4. according to claim 1 prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that:In step 4,
Metal Mg blocks and aluminium foil and mass ratio be not less than 5:1；The composition of Al-Zr intermediate alloys is 5wt%Zr and 95wt%Al.
5. according to claim 1 prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that:In step 8,
The drawing of 5-7 passages is carried out at room temperature.
6. according to claim 5 prepare a kind of method of all aluminium alloy aerial condutor, it is characterised in that:Previous three passes are drawn
The reducing rate pulled out is controlled 2.5~3:2-~2.5:In the range of 1.
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| WO2019135372A1 (en) * | 2018-01-05 | 2019-07-11 | 住友電気工業株式会社 | Aluminum alloy wire and method for producing aluminum alloy wire |
| CN109295361B (en) * | 2018-10-23 | 2021-07-30 | 宁波龙安包装科技有限公司 | Composite tensile medicinal aluminum foil and processing method thereof |
| CN109536794A (en) * | 2018-12-29 | 2019-03-29 | 安徽鑫发铝业有限公司 | Resistance electrophoretic aluminium section of a kind of resist bending cracking and preparation method thereof |
| CN110629086A (en) * | 2019-10-01 | 2019-12-31 | 湖南七纬科技有限公司 | Die-casting aluminum alloy material for 5G communication base station shell and preparation method thereof |
| CN112941376A (en) * | 2021-01-26 | 2021-06-11 | 佛山职业技术学院 | Alloy conductor material and preparation method and application thereof |
| CN113578997B (en) * | 2021-08-03 | 2024-02-02 | 南京超明精密合金材料有限公司 | Processing technology of super-easy-cutting precision alloy rod wire |
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