CN107841658B - A kind of aluminium base conducting wire of high strength and high conductivity rate and preparation method thereof - Google Patents
A kind of aluminium base conducting wire of high strength and high conductivity rate and preparation method thereof Download PDFInfo
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- CN107841658B CN107841658B CN201710916634.5A CN201710916634A CN107841658B CN 107841658 B CN107841658 B CN 107841658B CN 201710916634 A CN201710916634 A CN 201710916634A CN 107841658 B CN107841658 B CN 107841658B
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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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- 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
- 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
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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
Abstract
The present invention relates to a kind of aluminium base conducting wire of high strength and high conductivity rate and preparation methods, belong to field of material technology.The aluminium base conducting wire of middle intensity high heat resistance high conductivity of the invention is made by following metallic element and nonmetalloid: the quality of aluminium is calculated as 1, yttrium 0.3 ~ 0.4%, germanium 0.2 ~ 0.5%, erbium 0.2 ~ 0.4%, copper 0.3 ~ 0.5%, magnesium 0.5 ~ 0.6%, boron 0.2 ~ 0.4%, silicon 0.5 ~ 0.8%, iron 0.5 ~ 0.8%.Erbium, yttrium, germanium, copper, which is added, in the present invention in aluminium can refine as-cast grain, reduce interdendritic away from and dislocation, microstructure homogenization, remove impurity element therein, improve the conductivity of aluminium alloy；Thinning microstructure, promotion form θ (CuAl2) hardening constituent, improve alloy strength.
Description
Technical field
The present invention relates to aluminium base conducting wires of a kind of high strength and high conductivity rate and preparation method thereof, belong to field of material technology.
Background technique
In recent years, electricity needs is continuously improved, and electric power energy has higher requirement in the transmission, and construction is with high-tension line
The power grid on basis is concerned.But consider that the intensity of traditional aluminum steel is at maximum obstruction, therefore from resource-effective angle
The intensity for improving transmission pressure is too impatient to wait.However the intensity of aluminum-alloy conductor material and conductivity are a pair of contradictory bodies, how
The index for preferably taking into account the two becomes the key of current cond aluminium development.
Summary of the invention
The purpose of the present invention is disclosing a kind of aluminium base conducting wire of high strength and high conductivity rate, it is made up of object and is made: the matter of aluminium
Amount is calculated as 1, yttrium 0.3 ~ 0.4%, germanium 0.2 ~ 0.5%, erbium 0.2 ~ 0.4%, copper 0.3 ~ 0.5%, magnesium 0.5 ~ 0.6%, boron 0.2 ~ 0.4%, silicon
0.5 ~ 0.8%, iron 0.5 ~ 0.8%.
It is a further object of the present invention to provide the preparation methods of the aluminium base conducting wire of the high strength and high conductivity rate, and specific steps are such as
Under:
(1) aluminium ingot heating is fused into aluminum water；
(2) aluminium germanium intermediate alloy is added under the conditions of being higher than the temperature of aluminium fusing point, in aluminum water obtained by step (1), in aluminium erbium
Between alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, after keeping the temperature 10 ~ 15min
Magnesium is added, then keeps the temperature 10 ~ 15min, is passed through nitrogen after sequentially adding slagging agent, 2 ~ 5min of refining agent stirring, standing skims to obtain
Aluminum alloy melt；
(3) aluminum alloy melt obtained by step (2) is stood, casting obtains alumina-base material under the conditions of temperature is 700 ~ 800 DEG C；
(4) by alumina-base material obtained by step (3) be sequentially placed into Homogenization Treatments 240 under conditions of temperature is 470 ~ 510 DEG C ~
600min, temperature are 30 ~ 120min of solution treatment under conditions of 500 ~ 555 DEG C, obtain heat-treated aluminum sill；
(5) heat-treated aluminum sill obtained by step (4) is subjected to multi-pass sequence rolling deformation and obtains alumina-base material round bar,
Aluminium base conducting wire monofilament is obtained through room temperature multi pass drawing again, being subsequently placed in temperature is ageing treatment 240 under conditions of 170 ~ 180 DEG C
~ 480min up to high strength and high conductivity rate aluminium base conducting wire；
The additional amount of slagging agent is 5 ~ 10g in the step (2), and the additional amount of refining agent is 5 ~ 10g, slagging agent, refining
Agent is conventional commercial product；
In the step (5) multi-pass sequence rolling deformation enter to roll temperature be 500 ~ 580 DEG C, roll out temperature be 350 ~
400℃。
The beneficial effects of the present invention are:
(1) erbium, yttrium, germanium, copper, which is added, in the method for the present invention in aluminium can refine as-cast grain, reduce interdendritic away from and dislocation,
Microstructure homogenization removes impurity element therein, improves the conductivity of aluminium alloy；Thinning microstructure, promotion form θ (CuAl2) strong
Change phase, improves alloy strength；
(2) present invention first carries out Homogenization Treatments to aluminium, so that alloying component is evenly distributed, the second of grain boundaries is mutually uniform
It is distributed to intra-die；Suitable solid solubility temperature and soaking time are carried out again, and each mutually maximize in alloy is dissolved in into aluminum substrate, shape
At supersaturated solid solution；Finally, carrying out ageing treatment, lattice is made to be changed into shortrange order state, electron scattering from long-range order
Probability reduces, to reduce resistivity to a certain extent；
(3) aluminium alloy wire of high-strength aluminum alloy material preparation of the present invention has more higher than existing aluminium alloy wire
Tensile strength and electric conductivity can reach the mechanical property requirements of steel-cored aluminium strand, have higher electric conductivity, can be applied to
The transmission lines of electricity such as Great span.
Specific embodiment
Invention is further described in detail With reference to embodiment, but protection scope of the present invention and unlimited
In the content.
Embodiment 1: the aluminium base conducting wire of the high strength and high conductivity rate of the present embodiment, by following metallic element and nonmetalloid system
: the quality of aluminium is calculated as 1, yttrium 0.30%, germanium 0.50%, erbium 0.20%, copper 0.30%, magnesium 0.60%, boron 0.40%, silicon 0.50%, iron
0.80%；
A kind of preparation method of the aluminium base conducting wire of high strength and high conductivity rate, the specific steps are as follows:
(1) aluminium ingot heating is fused into aluminum water；
(2) it under the conditions of being higher than temperature (temperature is 890 DEG C) of aluminium fusing point, is added in aluminium germanium in aluminum water obtained by step (1)
Between alloy, aluminium erbium intermediate alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, protect
Magnesium is added after warm 10min, then keeps the temperature 15min, is passed through nitrogen after sequentially adding 5g slagging agent, 6g refining agent stirring 2min, stands
It skims to obtain aluminum alloy melt；Wherein the mass ratio of Al, Er, Ge, Y, B, Cu, Mg, Fe, Si are 100:0.3:0.5 in aluminum alloy melt:
0.2: 0.3:0.6:0.4:0.5:0.8；
(3) aluminum alloy melt obtained by step (2) is stood into 10min, is poured under the conditions of temperature is 700 DEG C up to aluminium base
Material；
(4) alumina-base material obtained by step (3) is sequentially placed into Homogenization Treatments 300min under conditions of temperature is 480 DEG C,
Solution treatment 90min obtains heat-treated aluminum sill under conditions of temperature is 510 DEG C；
(5) heat-treated aluminum sill obtained by step (4) multi-pass sequence rolling is carried out (to enter and roll 530 DEG C, roll 350 out
DEG C) be deformed into subject to 9.5mm alumina-base material round bar, using room temperature multi pass drawing at diameter be 2mm aluminium base conducting wire list
Silk, be subsequently placed in temperature be 180 DEG C under conditions of ageing treatment 300min up to high strength and high conductivity rate aluminium base conducting wire；
The performance test results of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment are as shown in table 1, can from table 1
Know, conductivity 61.5%IACS, tensile strength 289.65MPa, elongation 6.2%.
Embodiment 2: the aluminium base conducting wire of the high strength and high conductivity rate of the present embodiment, by following metallic element and nonmetalloid system
: the quality of aluminium is calculated as 1, yttrium 0.40%, germanium 0.20%, erbium 0.40%, copper 0.50%, magnesium 0.50%, boron 0.20%, silicon 0.80%, iron
0.50%；
A kind of preparation method of the aluminium base conducting wire of high strength and high conductivity rate, the specific steps are as follows:
(1) aluminium ingot heating is fused into aluminum water；
(2) it under the conditions of being higher than temperature (temperature is 870 DEG C) of aluminium fusing point, is added in aluminium germanium in aluminum water obtained by step (1)
Between alloy, aluminium erbium intermediate alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, protect
Magnesium is added after warm 12min, then keeps the temperature 13min, is passed through nitrogen after sequentially adding 7g slagging agent, 5g refining agent stirring 2min, stands
It skims to obtain aluminum alloy melt；Wherein the mass ratio of Al, Er, Ge, Y, B, Cu, Mg, Fe, Si are 100:0.4:0.2 in aluminum alloy melt:
0.4: 0.5:0.5:0.2:0.8:0.5；
(3) aluminum alloy melt obtained by step (2) is stood into 15min, is poured under the conditions of temperature is 750 DEG C up to aluminium base
Material；
(4) alumina-base material obtained by step (3) is sequentially placed into Homogenization Treatments 600min under conditions of temperature is 470 DEG C,
Solution treatment 120min obtains heat-treated aluminum sill under conditions of temperature is 500 DEG C；
(5) heat-treated aluminum sill obtained by step (4) multi-pass sequence rolling is carried out (to enter and roll 500 DEG C, roll 350 out
DEG C) be deformed into subject to 9.5mm alumina-base material round bar, using room temperature multi pass drawing at diameter be 2mm aluminium base conducting wire list
Silk, be subsequently placed in temperature be 170 DEG C under conditions of ageing treatment 480min up to high strength and high conductivity rate aluminium base conducting wire；
The performance test results of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment are as shown in table 1, can from table 1
Know, conductivity 60.5%IACS, tensile strength 295.76MPa, elongation 5.8%.
Embodiment 3: the aluminium base conducting wire of the high strength and high conductivity rate of the present embodiment, by following metallic element and nonmetalloid system
: the quality of aluminium is calculated as 1, yttrium 0.32%, germanium 0.30%, erbium 0.35%, copper 0.35%, magnesium 0.55%, boron 0.25%, silicon 0.70%, iron
0.70%；
A kind of preparation method of the aluminium base conducting wire of high strength and high conductivity rate, the specific steps are as follows:
(1) aluminium ingot heating is fused into aluminum water；
(2) it under the conditions of being higher than temperature (temperature is 860 DEG C) of aluminium fusing point, is added in aluminium germanium in aluminum water obtained by step (1)
Between alloy, aluminium erbium intermediate alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, protect
Magnesium is added after warm 15min, then keeps the temperature 10min, is passed through nitrogen after sequentially adding 8g slagging agent, 7g refining agent stirring 5min, stands
It skims to obtain aluminum alloy melt；Wherein the mass ratio of Al, Er, Ge, Y, B, Cu, Mg, Fe, Si are 100:0.32 in aluminum alloy melt:
0.3:0.35: 0.35:0.55:0.25:0.7:0.7；
(3) aluminum alloy melt obtained by step (2) is stood into 12min, is poured under the conditions of temperature is 780 DEG C up to aluminium base
Material；
(4) alumina-base material obtained by step (3) is sequentially placed into Homogenization Treatments 240min under conditions of temperature is 510 DEG C,
Solution treatment 30min obtains heat-treated aluminum sill under conditions of temperature is 555 DEG C；
(5) heat-treated aluminum sill obtained by step (4) is subjected to multi-pass sequence rolling (enter and roll 580 DEG C, roll 400 DEG C out)
The alumina-base material round bar of 9.5mm subject to being deformed into, using room temperature multi pass drawing at diameter be 2mm aluminium base conducting wire monofilament, so
Be placed on temperature be 175 DEG C under conditions of ageing treatment 360min up to high strength and high conductivity rate aluminium base conducting wire；
The performance test results of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment are as shown in table 1, can from table 1
Know, conductivity 61.0%IACS, tensile strength 296.45MPa, elongation 6.4%.
Embodiment 4: the aluminium base conducting wire of the high strength and high conductivity rate of the present embodiment, by following metallic element and nonmetalloid system
: the quality of aluminium is calculated as 1, yttrium 0.36%, germanium 0.45%, erbium 0.25%, copper 0.40%, magnesium 0.55%, boron 0.30%, silicon 0.60%, iron
0.75%；
A kind of preparation method of the aluminium base conducting wire of high strength and high conductivity rate, the specific steps are as follows:
(1) aluminium ingot heating is fused into aluminum water；
(2) it under the conditions of being higher than temperature (temperature is 870 DEG C) of aluminium fusing point, is added in aluminium germanium in aluminum water obtained by step (1)
Between alloy, aluminium erbium intermediate alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, protect
Magnesium is added after warm 10min, then keeps the temperature 10min, is passed through nitrogen after sequentially adding 9g slagging agent, 10g refining agent stirring 3min, stands
It skims to obtain aluminum alloy melt；Wherein the mass ratio of Al, Er, Ge, Y, B, Cu, Mg, Fe, Si are 100:0.36 in aluminum alloy melt:
0.45:0.25: 0.4:0.55:0.3:0.6:0.75；
(3) aluminum alloy melt obtained by step (2) is stood into 13min, is poured under the conditions of temperature is 770 DEG C up to aluminium base
Material；
(4) alumina-base material obtained by step (3) is sequentially placed into Homogenization Treatments 400min under conditions of temperature is 500 DEG C,
Solution treatment 40min obtains heat-treated aluminum sill under conditions of temperature is 540 DEG C；
(5) heat-treated aluminum sill obtained by step (4) multi-pass sequence rolling is carried out (to enter and roll 550 DEG C, roll 380 out
DEG C) be deformed into subject to 9.5mm alumina-base material round bar, using room temperature multi pass drawing at diameter be 2mm aluminium base conducting wire list
Silk, be subsequently placed in temperature be 180 DEG C under conditions of ageing treatment 240min up to high strength and high conductivity rate aluminium base conducting wire；
The performance test results of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment are as shown in table 1, can from table 1
Know, conductivity 60.5%IACS, tensile strength 296.26MPa, elongation 6.5%.
Embodiment 5: the aluminium base conducting wire of the high strength and high conductivity rate of the present embodiment, by following metallic element and nonmetalloid system
: the quality of aluminium is calculated as 1, yttrium 0.38%, germanium 0.25%, erbium 0.40%, copper 0.45%, magnesium 0.55%, boron 0.35%, silicon 0.80%, iron
0.60%；
A kind of preparation method of the aluminium base conducting wire of high strength and high conductivity rate, the specific steps are as follows:
(1) aluminium ingot heating is fused into aluminum water；
(2) it under the conditions of being higher than temperature (temperature is 880 DEG C) of aluminium fusing point, is added in aluminium germanium in aluminum water obtained by step (1)
Between alloy, aluminium erbium intermediate alloy, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon and be uniformly dispersed, protect
Magnesium is added after warm 10min, then keeps the temperature 10min, is passed through nitrogen after sequentially adding 10g slagging agent, 8g refining agent stirring 4min, stands
It skims to obtain aluminum alloy melt；Wherein the mass ratio of Al, Er, Ge, Y, B, Cu, Mg, Fe, Si are 100:0.38 in aluminum alloy melt:
0.25:0.4: 0.45:0.55:0.35:0.8:0.6；
(3) aluminum alloy melt obtained by step (2) is stood into 14min, is poured under the conditions of temperature is 800 DEG C up to aluminium base
Material；
(4) alumina-base material obtained by step (3) is sequentially placed into Homogenization Treatments 360min under conditions of temperature is 490 DEG C,
Solution treatment 80min obtains heat-treated aluminum sill under conditions of temperature is 520 DEG C；
(5) heat-treated aluminum sill obtained by step (4) multi-pass sequence rolling is carried out (to enter and roll 560 DEG C, roll 370 out
DEG C) be deformed into subject to 9.5mm alumina-base material round bar, using room temperature multi pass drawing at diameter be 2mm aluminium base conducting wire list
Silk, be subsequently placed in temperature be 170 DEG C under conditions of ageing treatment 480min up to high strength and high conductivity rate aluminium base conducting wire；
The performance test results of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment are as shown in table 1,
Table 1
As known from Table 1, the conductivity of the aluminium base conducting wire of high strength and high conductivity rate manufactured in the present embodiment is 60.2%IACS, is resisted
Tensile strength is 298.18MPa, elongation 5.7%.
Claims (4)
1. a kind of aluminium base conducting wire of high strength and high conductivity rate, which is characterized in that be made by following metallic element and nonmetalloid: aluminium
Quality be calculated as 1, yttrium 0.3 ~ 0.4%, germanium 0.2 ~ 0.5%, erbium 0.2 ~ 0.4%, copper 0.3 ~ 0.5%, magnesium 0.5 ~ 0.6%, boron 0.2 ~
0.4%, silicon 0.5 ~ 0.8%, iron 0.5 ~ 0.8%.
2. the preparation method of the aluminium base conducting wire of high strength and high conductivity rate as described in claim 1, which is characterized in that specific steps are such as
Under:
(1) aluminium ingot heating is fused into aluminum water；
(2) aluminium germanium intermediate alloy is added under the conditions of being higher than the temperature of aluminium fusing point, in aluminum water obtained by step (1), aluminium erbium centre is closed
Gold, aluminium yttrium intermediate alloy, aluminum bronze intermediate alloy, aluminium boron intermediate alloy, iron, silicon are simultaneously uniformly dispersed, and are added after keeping the temperature 10 ~ 15min
Magnesium, then 10 ~ 15min is kept the temperature, it is passed through nitrogen after sequentially adding slagging agent, 2 ~ 5min of refining agent stirring, standing skims to obtain aluminium conjunction
Golden liquid；
(3) aluminum alloy melt obtained by step (2) is stood, casting obtains alumina-base material under the conditions of temperature is 700 ~ 800 DEG C；
(4) by alumina-base material obtained by step (3) be sequentially placed into Homogenization Treatments 240 under conditions of temperature is 470 ~ 510 DEG C ~
600min, temperature are 30 ~ 120min of solution treatment under conditions of 500 ~ 555 DEG C, obtain heat-treated aluminum sill；
(5) heat-treated aluminum sill obtained by step (4) is subjected to multi-pass sequence rolling deformation and obtains alumina-base material round bar, then passed through
Room temperature multi pass drawing obtains aluminium base conducting wire monofilament, be subsequently placed in temperature be 170 ~ 180 DEG C under conditions of ageing treatment 240 ~
480min up to high strength and high conductivity rate aluminium base conducting wire.
3. the preparation method of the aluminium base conducting wire of high strength and high conductivity rate according to claim 2, it is characterised in that: in step (2)
The additional amount of slagging agent is 5 ~ 10g, and the additional amount of refining agent is 5 ~ 10g.
4. the preparation method of the aluminium base conducting wire of high strength and high conductivity rate according to claim 2, it is characterised in that: the step
(5) temperature that enters to roll of multi-pass sequence rolling deformation is 500 ~ 580 DEG C in, and rolling temperature out is 350 ~ 400 DEG C.
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| CN102312135A (en) * | 2010-06-30 | 2012-01-11 | 通用汽车环球科技运作有限责任公司 | Improved y alloy y |
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