CN114664489A - Rare earth aluminum alloy cable and preparation method thereof - Google Patents
Rare earth aluminum alloy cable and preparation method thereof Download PDFInfo
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- CN114664489A CN114664489A CN202210425871.2A CN202210425871A CN114664489A CN 114664489 A CN114664489 A CN 114664489A CN 202210425871 A CN202210425871 A CN 202210425871A CN 114664489 A CN114664489 A CN 114664489A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 84
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 72
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 33
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 29
- 239000004917 carbon fiber Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 29
- -1 aluminum-titanium-carbon Chemical compound 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052796 boron Inorganic materials 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 8
- 239000011777 magnesium Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000011701 zinc Substances 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 34
- 238000003723 Smelting Methods 0.000 claims description 23
- 238000000137 annealing Methods 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 15
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 229910052684 Cerium Inorganic materials 0.000 claims description 10
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical group [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000007872 degassing Methods 0.000 claims description 10
- 229910052746 lanthanum Inorganic materials 0.000 claims description 10
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 10
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 5
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000012856 weighed raw material Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- 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
-
- 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
-
- 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
- H01B13/02—Stranding-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a rare earth aluminum alloy cable which comprises wire cores and an outer sheath, wherein at least three wire cores are arranged inside the outer sheath, and a carbon fiber rod is arranged in the center of the outer sheath; the wire core is wrapped outside the carbon fiber rod and comprises a conductor and an insulating layer, and the insulating layer is wrapped outside the conductor; the conductor is formed by twisting rare earth aluminum alloy monofilaments. The rare earth aluminum alloy monofilament comprises the following components in percentage by mass: 0.8-1.3% of rare earth, 1.0-1.5% of iron, 0.03-0.08% of silicon, 0.02-0.08% of copper, 0.01-0.05% of magnesium, 0.01-0.05% of boron, 0.01-0.05% of zinc, 1.1-1.8% of graphene, 1.5-2.5% of carbon fiber, 0.9-1.2% of aluminum-titanium-carbon, less than or equal to 0.1% of the total content of impurities and the balance of aluminum. The invention also discloses a preparation method of the rare earth aluminum alloy cable. The rare earth aluminum alloy cable and the preparation method thereof can solve the problems of high brittleness and poor conductivity of the conventional aluminum alloy cable.
Description
Technical Field
The invention relates to the technical field of aluminum alloy cables, in particular to a rare earth aluminum alloy cable and a preparation method thereof.
Background
Copper is often used as a conductor in electric wires and cables because of its good electrical conductivity. Due to the shortage of copper resources in China, the price of the wire and the cable is higher; aluminum alloy cables have found use due to their low weight and price. The aluminum alloy cable is mostly processed by adopting 8000 series aluminum alloy wires, the processed aluminum alloy has high brittleness, the twisted conductor is easy to crack, and cracks generate heat and corrode, so that the aluminum alloy cable is an important reason of fire, is a fatal reason which cannot be widely applied to the market, and limits the application of the aluminum alloy cable.
Disclosure of Invention
The invention aims to provide a rare earth aluminum alloy cable, which solves the problems of high brittleness and poor conductivity of the existing aluminum alloy cable. The invention also aims to provide a preparation method of the rare earth aluminum alloy cable.
In order to achieve the purpose, the invention provides a rare earth aluminum alloy cable which comprises wire cores and an outer sheath, wherein at least three wire cores are arranged inside the outer sheath, and a carbon fiber rod is arranged in the center of the outer sheath; the wire core is wrapped outside the carbon fiber rod and comprises a conductor and an insulating layer, and the insulating layer is wrapped outside the conductor; the conductor is formed by twisting rare earth aluminum alloy monofilaments;
the rare earth aluminum alloy monofilament comprises the following components in percentage by mass: 0.8-1.3% of rare earth, 1.0-1.5% of iron, 0.03-0.08% of silicon, 0.02-0.08% of copper, 0.01-0.05% of magnesium, 0.01-0.05% of boron, 0.01-0.05% of zinc, 1.1-1.8% of graphene, 1.5-2.5% of carbon fiber, 0.9-1.2% of aluminum-titanium-carbon, less than or equal to 0.1% of the total content of impurities and the balance of aluminum.
Preferably, the conductor comprises a central cylindrical monofilament, the outer part of the cylindrical monofilament is wrapped with sector-ring-shaped monofilaments, and the sector-ring-shaped monofilaments are distributed on the outer part of the cylindrical monofilament in a circumferential array.
Preferably, the inside of oversheath is provided with the wrapping of non-woven fabrics, wraps up in the outside of sinle silk around the wrapping, and the packing has insulating stopping between sinle silk and the wrapping.
Preferably, the outer sheath is a polyethylene sheath, and the insulating layer is a polyethylene layer.
Preferably, the rare earth aluminum alloy monofilament comprises the following components in percentage by mass: 1.0% of rare earth, 1.3% of iron, 0.05% of silicon, 0.05% of copper, 0.02% of magnesium, 0.03% of boron, 0.03% of zinc, 1.5% of graphene, 2% of carbon fiber, 0.9-1.2% of aluminum-titanium-carbon, less than or equal to 0.1% of the total content of impurities and the balance of aluminum.
Preferably, the rare earth element is cerium, lanthanum or a mixture of cerium and lanthanum.
The preparation method of the rare earth aluminum alloy cable comprises the following steps:
s1, preparing materials, and weighing the raw materials according to set chemical components for later use;
s2, melting aluminum ingots, namely putting the aluminum ingots with the purity higher than 99.8% into a melting furnace for melting, wherein the melting temperature is 750-;
s3, smelting, namely adding weighed raw materials into the heat-preserved aluminum liquid according to the component design into a smelting furnace for smelting, refining and degassing, and preserving heat after uniform smelting to obtain aluminum alloy liquid;
s4, casting and forming, namely, degassing the smelted aluminum alloy liquid, then pouring, and casting into an aluminum strip;
s5, rolling, namely rolling the cast aluminum strip by a rolling mill to form a rare earth aluminum alloy rod with phi 9 mm;
s6, drawing, namely drawing the rare earth aluminum alloy rod into round or fan-ring-shaped monofilaments by using a thirteen-die drawing machine;
s7, twisting the single wire on the frame into a cylindrical conductor by adopting a special-shaped twisted wire die;
and S7, performing heat treatment, namely putting the conductor into an annealing furnace for annealing, wrapping an insulating layer outside the conductor after cooling to form a wire core, placing a carbon fiber rod in the center of the wire core, placing a filling material outside the adjacent wire core, sequentially wrapping a layer of non-woven fabric on a cabling machine from inside to outside, and extruding the outer sheath by using polyethylene to obtain the rare earth aluminum alloy cable.
Preferably, in the step S7, the annealing temperature is 300 ℃ ± 10 ℃, and the annealing time is 6-9 h;
preferably, in step S7, the insulating layer is a single-layer or three-layer co-extruded crosslinked polyethylene.
The rare earth aluminum alloy cable and the preparation method thereof have the advantages and positive effects that:
1. the conductor comprises a central cylindrical monofilament and peripheral special-shaped fan-shaped annular monofilaments, the fan-shaped annular monofilaments are tightly arranged outside the cylindrical monofilaments and are formed in a special-shaped pressing and stranding mode, and the monofilaments in the conductor are tightly arranged, so that the strength of the conductor is improved, and the number of the monofilaments in a unit area is increased.
2. The center of sinle silk is provided with the carbon fiber stick, adopts the carbon fiber stick to fill the gap between the sinle silk, is favorable to improving the intensity of cable.
3. The rare earth elements are added into the aluminum alloy monofilament, and the rare earth elements can refine the crystal grains of the aluminum alloy, so that the comprehensive mechanical property of the aluminum alloy is improved. The rare earth elements can reduce gas elements in the alloy, reduce the number of air holes in the alloy, reduce the content of impurity elements in the alloy and have a purifying effect on the aluminum alloy.
4. The graphene has excellent strength, conductivity and heat conductivity, and the carbon fiber has the properties of light weight, high strength, high elasticity, low temperature resistance and corrosion resistance, so that the addition of the graphene and the carbon fiber in the aluminum alloy monofilament is beneficial to improving the electrical performance of the aluminum alloy monofilament.
5. The aluminum-titanium-carbon intermediate alloy not only enables the aluminum alloy to obtain more and finer equiaxed crystals, can improve the strength and toughness of the material, but also can improve the conductivity and the elongation of the material, and can effectively reduce the resistivity of the aluminum alloy conductor.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a rare earth aluminum alloy cable and a preparation method thereof according to an embodiment of the invention.
Reference numerals
1. An outer sheath; 2. wrapping a covering; 3. a carbon fiber rod; 4. a conductor; 5. an insulating layer; 6. and (3) a filling material.
Detailed Description
The technical scheme of the invention is further explained by the attached drawings and the embodiment.
The rare earth aluminum alloy cable comprises wire cores and an outer sheath, wherein at least three wire cores are arranged inside the outer sheath. The sinle silk is 4 in this application, and 4 inseparable contacts of sinle silk are laminated together. The center of oversheath is provided with the carbon fiber stick, and the carbon fiber stick not only can improve the intensity of cable, but also is favorable to improving the electric conductive property of cable. The outer sheath is a polyethylene sheath and has good insulativity. The sinle silk parcel is in the outside of carbon fiber stick, and carbon fiber stick closely laminates with the sinle silk. The sinle silk includes conductor and insulating layer, and the insulating layer parcel is in the outside of conductor. The insulating layer is a polyethylene layer. The conductor is formed by twisting rare earth aluminum alloy monofilaments.
The conductor comprises a central cylindrical monofilament, fan-ring-shaped monofilaments wrap the outside of the cylindrical monofilament, the fan-ring-shaped monofilaments are distributed on the outside of the cylindrical monofilament in a circumferential array, and the cylindrical monofilament and the fan-ring-shaped monofilaments are tightly attached together. The fan-shaped monofilaments can be tightly wrapped outside the cylindrical monofilaments, and the monofilaments in the conductor are tightly arranged, so that the tightness of the conductor is improved, and the strength of the conductor is improved; and is advantageous for increasing the number of monofilaments per unit area.
The inside of oversheath is provided with the wrapping of non-woven fabrics, wraps up in the outside of sinle silk around the wrapping, carries out inseparable fixing with sinle silk and carbon fiber stick together around the wrapping. And insulating filling materials are filled between the wire core and the wrapping layer. The filler can be polyethylene filler.
Example 1
The rare earth aluminum alloy monofilament preferably comprises the following components in percentage by mass: 0.95% of rare earth, 1.25% of iron, 0.04% of silicon, 0.04% of copper, 0.016% of magnesium, 0.027% of boron, 0.027% of zinc, 1.45% of graphene, 1.92% of carbon fiber, 0.95% of aluminum-titanium-carbon, 0.12% of total impurity content and the balance of aluminum.
The rare earth element is cerium, lanthanum or a mixture of cerium and lanthanum.
The preparation method of the rare earth aluminum alloy cable comprises the following steps:
s1, preparing materials, and weighing the raw materials according to set chemical components for later use;
s2, melting aluminum ingots, namely putting the aluminum ingots with the purity higher than 99.8% into a smelting furnace for melting, wherein the melting temperature is 750 ℃, and preserving heat after melting;
s3, smelting, namely adding weighed raw materials into a smelting furnace according to component design in the heat-insulated aluminum liquid for smelting, refining and degassing, and preserving heat after uniform smelting to obtain aluminum alloy liquid;
s4, casting and forming, namely degassing the smelted aluminum alloy liquid, then casting, and casting into aluminum strips;
s5, rolling, namely rolling the cast aluminum strip by a rolling mill to form a rare earth aluminum alloy rod with phi 9 mm;
s6, drawing, namely drawing the rare earth aluminum alloy rod into round or fan-ring-shaped monofilaments by using a thirteen-die drawing machine;
s7, twisting the single wire on the frame into a cylindrical conductor by adopting a special-shaped twisted wire die;
and S7, performing heat treatment, namely putting the conductor into an annealing furnace for annealing, wherein the annealing temperature is 300 +/-10 ℃, and the annealing time is 8 h. And after cooling, wrapping an insulating layer outside the conductor to form a wire core, wherein the insulating layer is single-layer or three-layer co-extrusion crosslinked polyethylene. And placing a carbon fiber rod in the center of each wire core, placing a filler outside each adjacent wire core, sequentially wrapping a layer of non-woven fabric on a cabling machine from inside to outside, and extruding the outer sheath by using polyethylene to obtain the rare earth aluminum alloy cable.
The rare earth aluminum alloy cable conductor prepared by the method has the tensile strength of 250MPa, the yield strength of 80MPa, the elongation of 32 percent, the electric conductivity of 61.5 percent IACS and the service life of 40 years.
Example 2
The rare earth aluminum alloy monofilament preferably comprises the following components in percentage by mass: 1.03% of rare earth, 1.33% of iron, 0.06% of silicon, 0.055% of copper, 0.025% of magnesium, 0.033% of boron, 0.032% of zinc, 1.56% of graphene, 2.03% of carbon fiber, 1.18% of aluminum-titanium-carbon, 0.11% of total impurity content and the balance of aluminum.
The rare earth element is cerium, lanthanum or a mixture of cerium and lanthanum.
The preparation method of the rare earth aluminum alloy cable comprises the following steps:
s1, preparing materials, and weighing the raw materials according to set chemical components for later use;
s2, melting aluminum ingots, namely putting the aluminum ingots with the purity higher than 99.8% into a smelting furnace for melting, wherein the melting temperature is 780 ℃, and preserving heat after melting;
s3, smelting, namely adding weighed raw materials into the heat-preserved aluminum liquid according to the component design into a smelting furnace for smelting, refining and degassing, and preserving heat after uniform smelting to obtain aluminum alloy liquid;
s4, casting and forming, namely, degassing the smelted aluminum alloy liquid, then pouring, and casting into an aluminum strip;
s5, rolling, namely rolling the cast aluminum strip by a rolling mill to form a rare earth aluminum alloy rod with phi 9 mm;
s6, drawing, namely drawing the rare earth aluminum alloy rod into round or fan-ring-shaped monofilaments by using a thirteen-die drawing machine;
s7, twisting the single wire on the frame into a cylindrical conductor by adopting a special-shaped twisted wire die;
and S7, performing heat treatment, namely putting the conductor into an annealing furnace for annealing, wherein the annealing temperature is 300 +/-10 ℃, and the annealing time is 6 hours. And after cooling, wrapping an insulating layer outside the conductor to form a wire core, wherein the insulating layer is single-layer or three-layer co-extrusion crosslinked polyethylene. And placing a carbon fiber rod in the center of each wire core, placing a filler outside each adjacent wire core, sequentially wrapping a layer of non-woven fabric on a cabling machine from inside to outside, and extruding the outer sheath by using polyethylene to obtain the rare earth aluminum alloy cable.
The rare earth aluminum alloy cable conductor prepared by the method has the tensile strength of 245MPa, the yield strength of 78MPa, the elongation of 35 percent, the electric conductivity of 62.4 percent IACS and the service life of 42 years.
Example 3
The rare earth aluminum alloy monofilament preferably comprises the following components in percentage by mass: 1.0% of rare earth, 1.30% of iron, 0.05% of silicon, 0.05% of copper, 0.02% of magnesium, 0.03% of boron, 0.03% of zinc, 1.50% of graphene, 2.0% of carbon fiber, 1.10% of aluminum-titanium-carbon, 0.1% of the total content of impurities and the balance of aluminum.
The rare earth element is cerium, lanthanum or a mixture of cerium and lanthanum.
The preparation method of the rare earth aluminum alloy cable comprises the following steps:
s1, preparing materials, and weighing the raw materials according to set chemical components for later use;
s2, melting aluminum ingots, namely putting the aluminum ingots with the purity higher than 99.8% into a smelting furnace for melting, wherein the melting temperature is 800 ℃, and preserving heat after melting;
s3, smelting, namely adding weighed raw materials into a smelting furnace according to component design in the heat-insulated aluminum liquid for smelting, refining and degassing, and preserving heat after uniform smelting to obtain aluminum alloy liquid;
s4, casting and forming, namely, degassing the smelted aluminum alloy liquid, then pouring, and casting into an aluminum strip;
s5, rolling, namely rolling the cast aluminum strip by a rolling mill to form a rare earth aluminum alloy rod with phi 9 mm;
s6, drawing, namely drawing the rare earth aluminum alloy rod into round or fan-ring-shaped monofilaments by using a thirteen-die drawing machine;
s7, twisting the single wire on a frame into a cylindrical conductor by adopting a special-shaped wire twisting die;
and S7, performing heat treatment, namely putting the conductor into an annealing furnace for annealing, wherein the annealing temperature is 300 +/-10 ℃, and the annealing time is 8 h. And after cooling, wrapping an insulating layer outside the conductor to form a wire core, wherein the insulating layer is single-layer or three-layer co-extrusion crosslinked polyethylene. And placing a carbon fiber rod in the center of each wire core, placing a filler outside each adjacent wire core, sequentially wrapping a layer of non-woven fabric on a cabling machine from inside to outside, and extruding the outer sheath by using polyethylene to obtain the rare earth aluminum alloy cable.
The rare earth aluminum alloy cable conductor prepared by the method has the tensile strength of 240MPa, the yield strength of 75MPa, the elongation of 40 percent, the conductivity of 63.0 percent IACS and the service life of 45 years.
Therefore, the rare earth aluminum alloy cable and the preparation method thereof can solve the problems of high brittleness and poor conductivity of the conventional aluminum alloy cable.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
1. A rare earth aluminum alloy cable is characterized in that: the cable comprises cable cores and an outer sheath, wherein at least three cable cores are arranged inside the outer sheath, and a carbon fiber rod is arranged in the center of the outer sheath; the wire core is wrapped outside the carbon fiber rod and comprises a conductor and an insulating layer, and the insulating layer is wrapped outside the conductor; the conductor is formed by twisting rare earth aluminum alloy monofilaments;
the rare earth aluminum alloy monofilament comprises the following components in percentage by mass: 0.8-1.3% of rare earth, 1.0-1.5% of iron, 0.03-0.08% of silicon, 0.02-0.08% of copper, 0.01-0.05% of magnesium, 0.01-0.05% of boron, 0.01-0.05% of zinc, 1.1-1.8% of graphene, 1.5-2.5% of carbon fiber, 0.9-1.2% of aluminum-titanium-carbon, less than or equal to 0.1% of the total content of impurities and the balance of aluminum.
2. The rare earth aluminum alloy cable according to claim 1, wherein: the conductor comprises a cylindrical monofilament at the center, the outer part of the cylindrical monofilament is wrapped with fan-shaped monofilaments, and the fan-shaped monofilaments are distributed on the outer part of the cylindrical monofilament in a circumferential array.
3. The rare earth aluminum alloy cable according to claim 1, wherein: the inside of oversheath is provided with the wrapping of non-woven fabrics, wraps up in the outside of sinle silk around the wrapping, and the sinle silk is filled with insulating stopping with between the wrapping.
4. The rare earth aluminum alloy cable according to claim 1, wherein: the outer sheath is a polyethylene sheath, and the insulating layer is a polyethylene layer.
5. A rare earth aluminium alloy cable according to claim 1, wherein: the rare earth aluminum alloy monofilament comprises the following components in percentage by mass: 1.0% of rare earth, 1.3% of iron, 0.05% of silicon, 0.05% of copper, 0.02% of magnesium, 0.03% of boron, 0.03% of zinc, 1.5% of graphene, 2% of carbon fiber, 0.9-1.2% of aluminum-titanium-carbon, less than or equal to 0.1% of the total content of impurities and the balance of aluminum.
6. A rare earth aluminium alloy cable according to claim 1, wherein: the rare earth element is cerium, lanthanum or a mixture of cerium and lanthanum.
7. A method for preparing a rare earth aluminium alloy cable according to any one of claims 1 to 6, comprising the steps of:
s1, preparing materials, and weighing the raw materials according to set chemical components for later use;
s2, melting aluminum ingots, namely putting the aluminum ingots with the purity higher than 99.8% into a melting furnace for melting, wherein the melting temperature is 750-;
s3, smelting, namely adding weighed raw materials into the heat-preserved aluminum liquid according to the component design into a smelting furnace for smelting, refining and degassing, and preserving heat after uniform smelting to obtain aluminum alloy liquid;
s4, casting and forming, namely, degassing the smelted aluminum alloy liquid, then pouring, and casting into an aluminum strip;
s5, rolling, namely rolling the cast aluminum strip by a rolling mill to form a rare earth aluminum alloy rod with phi 9 mm;
s6, drawing, namely drawing the rare earth aluminum alloy rod into a round or fan-shaped monofilament by using a thirteen-die drawing machine;
s7, twisting the single wire on the frame into a cylindrical conductor by adopting a special-shaped twisted wire die;
and S7, performing heat treatment, namely putting the conductor into an annealing furnace for annealing, wrapping an insulating layer outside the conductor after cooling to form a wire core, placing a carbon fiber rod in the center of the wire core, placing a filling material outside the adjacent wire core, sequentially wrapping a layer of non-woven fabric on a cabling machine from inside to outside, and extruding the outer sheath by using polyethylene to obtain the rare earth aluminum alloy cable.
8. The method for preparing a rare earth aluminum alloy cable according to claim 7, wherein: in the step S7, the annealing temperature is 300 +/-10 ℃, and the annealing time is 6-9 h.
9. The method for preparing a rare earth aluminum alloy cable according to claim 7, wherein: in the step S7, the insulating layer is single-layer or three-layer co-extruded crosslinked polyethylene.
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| CN202210425871.2A CN114664489A (en) | 2022-04-21 | 2022-04-21 | Rare earth aluminum alloy cable and preparation method thereof |
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| CN202210425871.2A CN114664489A (en) | 2022-04-21 | 2022-04-21 | Rare earth aluminum alloy cable and preparation method thereof |
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| CN202210425871.2A Pending CN114664489A (en) | 2022-04-21 | 2022-04-21 | Rare earth aluminum alloy cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612780A (en) * | 2023-11-10 | 2024-02-27 | 广东腾跃通电缆有限公司 | Rare earth zinc alloy cold-resistant cable and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
| CN103474153A (en) * | 2013-08-07 | 2013-12-25 | 武汉宏联电线电缆有限公司 | Rare earth aluminum alloy power cable and production technology thereof |
| CN105039795A (en) * | 2015-09-01 | 2015-11-11 | 无锡华能电缆有限公司 | Graphene strengthened aluminum alloy and preparing method and preparing device of graphene strengthened aluminum alloy |
| CN107230508A (en) * | 2017-04-21 | 2017-10-03 | 安徽南洋新材料科技股份有限公司 | A kind of graphene rare earth aluminium alloy height leads the preparation method of material cable |
| TWI634565B (en) * | 2017-07-14 | 2018-09-01 | 林智雄 | Cable wire graphene composite |
| CN211529645U (en) * | 2019-12-17 | 2020-09-18 | 华远高科电缆有限公司 | Super flexible mineral substance fireproof cable |
| CN111816353A (en) * | 2020-07-24 | 2020-10-23 | 广东欣意电缆有限公司 | Rare earth high-iron aluminum alloy cable and preparation method thereof |
| CN114203333A (en) * | 2021-12-16 | 2022-03-18 | 广东欣意电缆有限公司 | High-conductivity high-strength rare earth alloy overhead insulated cable and preparation method thereof |
-
2022
- 2022-04-21 CN CN202210425871.2A patent/CN114664489A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
| CN103474153A (en) * | 2013-08-07 | 2013-12-25 | 武汉宏联电线电缆有限公司 | Rare earth aluminum alloy power cable and production technology thereof |
| CN105039795A (en) * | 2015-09-01 | 2015-11-11 | 无锡华能电缆有限公司 | Graphene strengthened aluminum alloy and preparing method and preparing device of graphene strengthened aluminum alloy |
| CN107230508A (en) * | 2017-04-21 | 2017-10-03 | 安徽南洋新材料科技股份有限公司 | A kind of graphene rare earth aluminium alloy height leads the preparation method of material cable |
| TWI634565B (en) * | 2017-07-14 | 2018-09-01 | 林智雄 | Cable wire graphene composite |
| CN211529645U (en) * | 2019-12-17 | 2020-09-18 | 华远高科电缆有限公司 | Super flexible mineral substance fireproof cable |
| CN111816353A (en) * | 2020-07-24 | 2020-10-23 | 广东欣意电缆有限公司 | Rare earth high-iron aluminum alloy cable and preparation method thereof |
| CN114203333A (en) * | 2021-12-16 | 2022-03-18 | 广东欣意电缆有限公司 | High-conductivity high-strength rare earth alloy overhead insulated cable and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612780A (en) * | 2023-11-10 | 2024-02-27 | 广东腾跃通电缆有限公司 | Rare earth zinc alloy cold-resistant cable and preparation method thereof |
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