Manufacturing method of aluminum alloy single wire and cable and aluminum alloy cable

Abstract

The invention relates to an aluminum alloy single wire and cable manufacturing method and an aluminum alloy cable, and the aluminum alloy single wire and cable manufacturing method comprises the steps that S1, Al is melted and then added into AlB5 alloy to obtain aluminum boride liquid, and the aluminum boride liquid comprises, by weight, 99.7-99.9 wt% of Al and 0.001-0.005 wt% of AlB5 alloy; s2, the aluminum boride liquid is refined, Mg, an AlSi20 alloy, an AlFe20 alloy, an AlTi12 alloy and an AlTi5B1 alloy are added into the aluminum boride liquid after refining, alloy aluminum liquid is obtained, and the alloy aluminum liquid comprises, by weight, 0.006 wt%-0.01 wt% of Mg, 0.003 wt%-0.007 wt% of the AlSi20 alloy, 0.003 wt%-0.006 wt% of the AlFe20 alloy, 0.001 wt%-0.005 wt% of the AlTi12 alloy and 0.003 wt%-0.005 wt% of the AlTi5B1 alloy; s3, refining the molten alloy aluminum, and filtering the refined molten alloy aluminum to obtain molten aluminum to be cast; s4, the molten aluminum to be cast is cast, and a blank is obtained; and S5, the aluminum alloy conducting rod is obtained after the blank is rolled. And S6, stretching the aluminum alloy conducting rod to form the aluminum alloy single wire. According to the aluminum alloy single wire, the manufacturing method of the aluminum alloy cable and the aluminum alloy cable, the tensile strength of the aluminum alloy cable can be improved, and the fracture risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of conductive rod manufacturing technology, and in particular to a method for manufacturing an aluminum alloy single wire and cable, and an aluminum alloy cable. Background Technology

[0002] Aluminum alloy cables are a common type of conductive cable, widely used in various sectors of the national economy. The conductive layer of an aluminum alloy cable typically consists of multiple aluminum alloy single wires twisted together on a supporting core. Currently, the tensile strength of commonly used aluminum alloy single wires ranges from 295MPa to 315MPa, and these single wires are made of aluminum alloy conductive rods. When aluminum alloy cables are used in windy environments, the conductive layer may break, thus affecting power transmission. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a method for manufacturing an aluminum alloy single wire and cable, and an aluminum alloy cable, which can improve the tensile strength of the aluminum alloy cable and reduce the risk of breakage.

[0004] To solve the above-mentioned technical problems, the present invention provides a method for manufacturing aluminum alloy single wire, comprising the following steps: S1: melting Al and adding AlB5 alloy to obtain aluminum boride liquid, wherein, by weight percentage, Al is 99.7-99.9 wt% and AlB5 alloy is 0.001-0.005 wt%; S2: refining the aluminum boride liquid, and then adding Mg, AlSi2O alloy, AlFe2O alloy, AlTi12 alloy and AlTi5B1 alloy to the aluminum boride liquid to obtain alloy aluminum liquid, wherein, by weight percentage, Mg is 0.006-0.005 wt%; 0.01wt%, AlSi20 alloy 0.003-0.007wt%, AlFe20 alloy 0.003-0.006wt%, AlTi12 alloy 0.001-0.005wt%, AlTi5B1 alloy 0.003-0.005wt%; S3: Refining the alloy aluminum liquid, filtering the refined alloy aluminum liquid to obtain the aluminum liquid to be cast; S4: Casting the aluminum liquid to be cast to obtain a billet; S5: Rolling the billet to obtain the aluminum alloy conductive rod; S6: Stretching the aluminum alloy conductive rod to form an aluminum alloy single wire.

[0005] In one embodiment of the present invention, in step S2, nitrogen gas is introduced and granular refining agent is added during the refining process of the aluminum boride liquid. The refining temperature is 700℃-720℃, the refining time is 25 minutes-30 minutes, and the liquid is left to stand for 25 minutes-30 minutes after refining.

[0006] In one embodiment of the present invention, in step S3, argon gas is introduced and sodium-free refining agent is added during the refining process of the alloy aluminum liquid. The refining temperature is 710℃-730℃, the refining time is 30 minutes-35 minutes, and the liquid is left to stand for 55 minutes-60 minutes after refining.

[0007] In one embodiment of the present invention, in step S4, the temperature of the molten aluminum to be cast is 750℃-770℃, and the cooling rate is 15℃ / s-20℃ / s.

[0008] In one embodiment of the present invention, during the casting process of the molten aluminum to be cast, the cooling water temperature is 15℃-20℃ during the first cooling and 28℃-32℃ during subsequent cooling. The billet temperature formed after the molten aluminum to be cast is 470℃-500℃.

[0009] In one embodiment of the present invention, in step S5, the temperature of the billet at the start of rolling is 580°C-600°C, and the temperature of the billet at the end of rolling is 280°C-300°C.

[0010] In one embodiment of the present invention, in step S5, the billet is rinsed with cooling water after rolling.

[0011] In one embodiment of the present invention, in step S6, the elongation coefficient of the aluminum alloy conductive rod during the stretching process is 1.25-1.27.

[0012] A method for manufacturing an aluminum alloy cable includes the above-mentioned method for manufacturing aluminum alloy single wires, and further includes the following steps: S7: aging treatment of the aluminum alloy single wires; S8: twisting multiple aging-treated aluminum alloy single wires onto a support core to form an aluminum alloy cable.

[0013] In one embodiment of the present invention, in step S7, the temperature during the aging treatment of the aluminum alloy single wire is 155-160°C, and the aging treatment time is at least 8 hours.

[0014] In one embodiment of the present invention, in step S8, the compression coefficient of the multiple aged aluminum alloy single wires when stranding is 0.87-0.89.

[0015] An aluminum alloy cable is manufactured using the aforementioned method for manufacturing aluminum alloy cables.

[0016] The technical solution of the present invention has the following advantages compared with the prior art:

[0017] The present invention discloses an aluminum alloy single wire, a method for manufacturing an aluminum alloy cable, and an aluminum alloy cable. This invention can improve the tensile strength of the aluminum alloy single wire, making it above 330 MPa, and the conductivity at 20°C above 53% IACS, and the elongation after fracture above 3.8%. This allows the aluminum alloy single wire to transmit electrical energy while withstanding greater conductor tension, thereby improving the tensile strength of the aluminum alloy cable and reducing the risk of breakage. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a flowchart of a method for manufacturing an aluminum alloy single wire according to the present invention;

[0020] Figure 2 This is a cross-sectional view of an aluminum alloy cable.

[0021] Explanation of the markings in the accompanying drawings: 1. Support core; 2. Conductive layer. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0023] Reference Figure 1 As shown, a method for manufacturing an aluminum alloy single wire according to the present invention includes the following steps: S1: Melting Al and adding AlB5 alloy to obtain aluminum boride liquid, wherein, by weight percentage, Al is 99.7-99.9 wt% and AlB5 alloy is 0.001-0.005 wt%; S2: Refining the aluminum boride liquid, and then adding Mg, AlSi2O alloy, AlFe2O alloy, AlTi12 alloy and AlTi5B1 alloy to the aluminum boride liquid to obtain alloy aluminum liquid, wherein, by weight percentage, Mg is 0.006-0.01 wt%. %, AlSi20 alloy 0.003-0.007wt%, AlFe20 alloy 0.003-0.006wt%, AlTi12 alloy 0.001-0.005wt%, AlTi5B1 alloy 0.003-0.005wt%; S3: Refine the alloy aluminum liquid, filter the refined alloy aluminum liquid to obtain the aluminum liquid to be cast; S4: Cast the aluminum liquid to be cast to obtain a billet; S5: Roll the billet to obtain the aluminum alloy conductive rod; S6: Stretch the aluminum alloy conductive rod to form an aluminum alloy single wire.

[0024] This embodiment of a method for manufacturing an aluminum alloy single wire can improve the tensile strength of the aluminum alloy single wire, making the tensile strength of the aluminum alloy single wire above 330MPa, and the conductivity of the aluminum alloy single wire at 20℃ above 53%IACS, and the elongation after fracture above 3.8%. This allows the aluminum alloy single wire to transmit electrical energy while withstanding greater conductor tension, thereby improving the tensile strength of the aluminum alloy cable and reducing the risk of breakage.

[0025] In this embodiment, AlSi20 alloy, AlFe20 alloy, AlTi12 alloy, AlB5 alloy and AlTi5B1 alloy are all aluminum master alloys according to the national standard GB / T27677-2017.

[0026] Step S1 includes melting Al and then adding AlB5 alloy. After melting AlB5 alloy, aluminum boride liquid is obtained. Adding AlB5 alloy can improve the conductivity of aluminum alloy single wires.

[0027] Step S2 involves refining the aluminum boride liquid. After refining, Mg, AlSi2O alloy, AlFe2O alloy, AlTi12 alloy, and AlTi5B1 alloy are added to the aluminum boride liquid to obtain an alloy aluminum liquid. Specifically, the AlTi5B1 alloy can be considered as an aluminum-titanium-boron wire, and the intermediate alloy and Al contain 0.001-0.003 wt% impurities. During the refining process of the aluminum boride liquid, nitrogen gas is introduced and a granular refining agent is added. The gas generated after the granular refining agent decomposes at high temperature reacts with hydrogen and adsorbs impurities, causing the impurities to escape from the aluminum boride liquid with the bubbles, effectively improving the purity of the aluminum boride liquid. The refining temperature of the aluminum boride liquid is 700℃-720℃, the refining time is 25-30 minutes, and the liquid is allowed to stand for 25-30 minutes after refining.

[0028] Step S3 includes refining the molten aluminum alloy, followed by filtration to obtain the molten aluminum ready for casting. Specifically, argon gas is introduced and a sodium-free refining agent is added during the refining process. The sodium-free refining agent removes hydrogen from the molten aluminum alloy and adsorbs impurities, causing the impurities to agglomerate and reside on the surface of the molten aluminum alloy. The refining temperature is 710℃-730℃, the refining time is 30-35 minutes, and the refined molten aluminum alloy is allowed to stand for 55-60 minutes. The refined molten aluminum alloy is then filtered to remove impurities from its surface, thereby improving the purity of the molten aluminum alloy.

[0029] Step S4 involves casting the molten aluminum to obtain a billet. Specifically, the temperature of the molten aluminum during casting is 750℃-770℃, the cooling rate is 15℃ / s-20℃ / s, and the casting speed is 4.5t / h-5t / h. The molten aluminum requires multiple cooling processes during casting. The cooling water temperature is 15℃-20℃ during the first cooling, and 28℃-32℃ during subsequent cooling. The billet temperature formed after casting is 470℃-500℃.

[0030] Step S5 includes: rolling the billet to obtain the aluminum alloy conductive rod. Specifically, the billet is passed through the gap between a pair of rotating rollers. The billet is squeezed by the rollers, causing the cross-sectional area of ​​the billet to gradually decrease and the length to gradually increase until the aluminum alloy conductive rod is formed. The temperature of the billet at the beginning of rolling is 580℃-600℃, and the temperature of the billet at the end of rolling is 280℃-300℃. After the billet is rolled, it is rinsed with cooling water to complete the quenching, and then the aluminum alloy rod is stored by an automatic take-up machine.

[0031] Step S6 includes: stretching the aluminum alloy conductive rod to form an aluminum alloy single wire. Specifically, in this embodiment, the diameter of the aluminum alloy rod is 9.5 mm, and the aluminum alloy rod is formed into an aluminum alloy single wire after passing through a wire drawing device. During the stretching process of the aluminum alloy conductive rod, the elongation coefficient is 1.25-1.27, thereby making the surface of the aluminum alloy single wire smooth and free from defects such as blackening and peeling.

[0032] Aluminum alloy single wires are manufactured using raw materials with different weight percentages, based on weight percentages. The refining temperature of the boronized aluminum liquid is 710℃, the refining time is 27 minutes, and the liquid is left to stand for 27 minutes after refining. The refining temperature of the alloy aluminum liquid is 720℃, the refining time is 32 minutes, and the liquid is left to stand for 57 minutes after refining. The temperature of the aluminum liquid to be cast is 760℃, the cooling rate is 17℃ / s, and the casting speed is 4.7t / h. The temperature at which the billet begins rolling is 590℃, and the temperature at which the billet finishes rolling is 290℃. Aluminum alloy single wires are manufactured according to the above manufacturing parameters, including the following examples. The manufacturing parameters are the same for each example, only the weight percentage of the raw materials is different.

[0033] Example 1: The raw materials for manufacturing aluminum alloy single wire are as follows (by weight): Mg 0.006wt%, AlSi20 alloy 0.003wt%, AlFe20 alloy 0.003wt%, AlTi12 alloy 0.001wt%, AlB5 alloy 0.001wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 331MPa, a conductivity of 54.2% IACS at 20℃, and an elongation after fracture of 3.9%.

[0034] Example 2: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.006wt%, AlSi20 alloy 0.004wt%, AlFe20 alloy 0.005wt%, AlTi12 alloy 0.003wt%, AlB5 alloy 0.002wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 333MPa, a conductivity of 54.0% IACS at 20℃, and an elongation after fracture of 3.9%.

[0035] Example 3: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.007wt%, AlSi20 alloy 0.005wt%, AlFe20 alloy 0.003wt%, AlTi12 alloy 0.003wt%, AlB5 alloy 0.001wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 338MPa, a conductivity of 53.8% IACS at 20℃, and an elongation after fracture of 4.2%.

[0036] Example 4: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.007wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.005wt%, AlTi12 alloy 0.003wt%, AlB5 alloy 0.003wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 340MPa, a conductivity of 53.6% IACS at 20℃, and an elongation after fracture of 4.3%.

[0037] Example 5: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.008wt%, AlSi20 alloy 0.006wt%, AlFe20 alloy 0.004wt%, AlTi12 alloy 0.005wt%, AlB5 alloy 0.003wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 338MPa, a conductivity of 53.7% IACS at 20℃, and an elongation after fracture of 4.3%.

[0038] Example 6: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.008wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.005wt%, AlTi12 alloy 0.003wt%, AlB5 alloy 0.003wt%, and AlTi5B1 alloy 0.004wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 342MPa, a conductivity of 53.6% IACS at 20℃, and an elongation after fracture of 4.5%.

[0039] Example 7: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.009wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.005wt%, AlTi12 alloy 0.004wt%, AlB5 alloy 0.003wt%, and AlTi5B1 alloy 0.005wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 345MPa, a conductivity of 53.55%IACS at 20℃, and an elongation after fracture of 4.6%.

[0040] Example 8: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.01wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.004wt%, AlTi12 alloy 0.005wt%, AlB5 alloy 0.002wt%, and AlTi5B1 alloy 0.002wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 345MPa, a conductivity of 53.57%IACS at 20℃, and an elongation after fracture of 4.6%.

[0041] Example 9: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.01wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.005wt%, AlTi12 alloy 0.005wt%, AlB5 alloy 0.003wt%, and AlTi5B1 alloy 0.003wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 343MPa, a conductivity of 53.55%IACS at 20℃, and an elongation after fracture of 4.7%.

[0042] Example 10: Raw material weight percentage for manufacturing aluminum alloy single wire: Mg 0.01wt%, AlSi20 alloy 0.007wt%, AlFe20 alloy 0.006wt%, AlTi12 alloy 0.005wt%, AlB5 alloy 0.005wt%, and AlTi5B1 alloy 0.005wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials has a tensile strength of 345MPa, a conductivity of 53.5%IACS at 20℃, and an elongation after fracture of 4.8%.

[0043] The aluminum alloy single wire is manufactured according to the manufacturing parameters of the above embodiments, including the following comparative examples. The comparative examples are the weight percentages of raw materials in the prior art. The manufacturing parameters of each comparative example are the same, only the weight percentages of raw materials are different.

[0044] Comparative Example 1: The raw materials used to manufacture the aluminum alloy single wire were as follows (by weight): Mg 0.1wt%, AlSi20 alloy 0.05wt%, AlFe20 alloy 0.13wt%, AlTi12 alloy 0.02wt%, AlB5 alloy 0.02wt%, and AlTi5B1 alloy 0.06wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials had a tensile strength of 312MPa, a conductivity of 49.5% IACS at 20℃, and an elongation after fracture of 3.2%.

[0045] Comparative Example 2: The raw materials used to manufacture the aluminum alloy single wire were as follows (by weight): Mg 0.18wt%, AlSi20 alloy 0.12wt%, AlFe20 alloy 0.06wt%, AlTi12 alloy 0.01wt%, AlB5 alloy 0.01wt%, and AlTi5B1 alloy 0.03wt%, with the remainder being Al and unavoidable impurities. The aluminum alloy single wire manufactured using the above raw materials had a tensile strength of 317MPa, a conductivity of 47.5% IACS at 20℃, and an elongation after fracture of 3.8%.

[0046] The test results of aluminum alloy single wires of different embodiments and different comparative examples are summarized in Table 1.

[0047] Table 1:

[0048] Tensile strength / MPa Elongation after fracture / % Conductivity at 20℃ / %IACS Example 1 331 54.2 3.9 Example 2 333 54.0 3.9 Example 3 338 53.8 4.2 Example 4 340 53.6 4.3 Example 5 338 53.7 4.3 Example 6 342 53.6 4.5 Example 7 345 53.55 4.6 Example 8 345 53.57 4.6 Example 9 343 53.55 4.7 Example 10 345 53.5 4.8 Comparative Example 1 312 49.5 3.2 Comparative Example 2 317 47.5 3.8

[0049] According to the test results of the aluminum alloy single wires in Table 1, the aluminum alloy single wires manufactured using the weight percentage of the raw materials in this invention have a tensile strength of over 330 MPa, a conductivity at 20°C of over 53% IACS, and an elongation after fracture of over 3.8%. The aluminum alloy single wires manufactured using the weight percentage of raw materials in the prior art have at least one lower value for tensile strength, elongation after fracture, and conductivity at 20°C, and the remaining test results are also lower than those of the aluminum alloy single wires manufactured in this invention.

[0050] The present invention also provides a method for manufacturing an aluminum alloy cable, including the above-mentioned method for manufacturing aluminum alloy single wires, and further including the following steps: S7: aging treatment of the aluminum alloy single wires; S8: twisting multiple aging-treated aluminum alloy single wires onto a support core 1 to form an aluminum alloy cable.

[0051] Step S7 includes: aging the aluminum alloy single wire. Specifically, the aluminum alloy single wire is aged in an aging furnace at a temperature of 155-160°C for at least 8 hours. After aging, the aluminum alloy single wire is cooled at room temperature to meet the requirements.

[0052] Step S8 includes: stranding multiple aged aluminum alloy single wires onto the support core 1 to form an aluminum alloy cable. Specifically, the compression coefficient of the multiple aged aluminum alloy single wires during stranding is 0.87-0.89. The stranding of the multiple aged aluminum alloy single wires onto the support core 1 constitutes a conductive layer 2. In this embodiment, at least two conductive layers 2 are stranded on the support core 1, wherein the compression coefficient of the outer conductive layer 2 during stranding is 0.88-0.89, and the compression coefficient of the inner conductive layer 2 during stranding is 0.86-0.87, thereby ensuring the performance of the aluminum alloy single wires is qualified.

[0053] Reference Figure 2 As shown, the present invention also provides an aluminum alloy cable, manufactured using the aforementioned method for manufacturing aluminum alloy cables. Specifically, the aluminum alloy cable includes a support core 1 and a conductive layer 2. The support core 1 is a high-strength aluminum-clad steel core made of high-strength aluminum-clad steel wire stranded together, which has high mechanical strength and corrosion resistance. The conductive layer 2 is composed of at least 7 aluminum alloy single wires stranded together, and the width of the radial cross-section of the aluminum alloy single wire gradually decreases towards the support core 1, thereby making the radial cross-section of the aluminum alloy single wire approximately trapezoidal. Depending on different requirements, the radial cross-section of the aluminum alloy single wire can also be circular or other shapes. In this embodiment, the aluminum alloy cable includes three conductive layers 2, and different numbers of conductive layers 2 can be provided according to different requirements.

[0054] The present invention discloses an aluminum alloy single wire, a method for manufacturing an aluminum alloy cable, and an aluminum alloy cable. This invention can improve the tensile strength of the aluminum alloy single wire, making its tensile strength above 330 MPa, and its conductivity at 20°C above 53% IACS, and its elongation after fracture above 3.8%. This allows the aluminum alloy single wire to transmit electrical energy while withstanding greater conductor tension, thereby improving the tensile strength of the aluminum alloy cable and reducing the risk of breakage.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method for manufacturing an aluminum alloy single wire, characterized in that, Includes the following steps: S1: Molten Al is added to AlB5 alloy to obtain aluminum boride liquid, wherein, by weight percentage, Al is 99.7-99.9 wt% and AlB5 alloy is 0.001-0.005 wt%; S2: Refining the aluminum boride liquid, then adding Mg, AlSi20 alloy, AlFe20 alloy, AlTi12 alloy, and AlTi5B1 alloy to the aluminum boride liquid to obtain an alloy aluminum liquid, wherein, by weight percentage, Mg 0.006-0.01wt%, AlSi20 alloy 0.003-0.007wt%, AlFe20 alloy 0.003-0.006wt%, AlTi12 alloy 0.001-0.005wt%, and AlTi5B1 alloy 0.003-0.005wt%; S3: Refine the alloy aluminum liquid, and filter the refined alloy aluminum liquid to obtain the aluminum liquid to be cast. S4: Cast the molten aluminum to be cast to obtain a billet; S5: The aluminum alloy conductive rod is obtained by rolling the billet; S6: The aluminum alloy conductive rod is stretched to form an aluminum alloy single wire.

2. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S2, nitrogen gas is introduced and granular refining agent is added during the refining process of the aluminum boride liquid. The refining temperature is 700℃-720℃, the refining time is 25 minutes-30 minutes, and the liquid is left to stand for 25 minutes-30 minutes after refining.

3. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S3, argon gas is introduced and sodium-free refining agent is added during the refining process of the alloy aluminum liquid. The refining temperature is 710℃-730℃, the refining time is 30 minutes-35 minutes, and the liquid is left to stand for 55 minutes-60 minutes after refining.

4. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S4, the temperature of the molten aluminum to be cast is 750℃-770℃, and the cooling rate is 15℃ / s-20℃ / s.

5. The method for manufacturing aluminum alloy single wire according to claim 4, characterized in that: During the casting process of the molten aluminum, the cooling water temperature is 15℃-20℃ during the first cooling and 28℃-32℃ during subsequent cooling. The billet temperature formed after the molten aluminum is cast is 470℃-500℃.

6. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S5, the temperature of the billet at the start of rolling is 580℃-600℃, and the temperature of the billet at the end of rolling is 280℃-300℃.

7. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S5, the billet is rinsed with cooling water after rolling.

8. The method for manufacturing aluminum alloy single wire according to claim 1, characterized in that: In step S6, the elongation coefficient of the aluminum alloy conductive rod during the stretching process is 1.25-1.

27.

9. A method for manufacturing an aluminum alloy cable, characterized in that, The method for manufacturing aluminum alloy single wire according to any one of claims 1-8 further includes the following steps: S7: Perform an aging treatment on the aluminum alloy single wire; S8: Twist multiple aged aluminum alloy single wires onto a support core to form an aluminum alloy cable.

10. The method for manufacturing an aluminum alloy cable according to claim 9, characterized in that: In step S7, the temperature during the aging treatment of the aluminum alloy single wire is 155-160℃, and the aging treatment time is at least 8 hours.

11. The method for manufacturing aluminum alloy cable according to claim 9, characterized in that: In step S8, the compression coefficient when multiple aged aluminum alloy single wires are stranded is 0.87-0.

89.

12. An aluminum alloy cable, characterized in that, The aluminum alloy cable is manufactured using the manufacturing method described in any one of claims 9-11.

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