CN110706841A - High-strength high-conductivity aluminum alloy wire for electrician and manufacturing method thereof - Google Patents
High-strength high-conductivity aluminum alloy wire for electrician and manufacturing method thereof Download PDFInfo
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
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- C22C49/06—Aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
Abstract
The invention provides an aluminum alloy wire with high strength and high conductivity for electricians and a manufacturing method thereof, wherein the aluminum alloy comprises the following components in percentage by weight: 0.50-0.70%, Fe: 0.10 to 0.50%, Cu: 0.02-0.05%, Mg: 0.52-0.90%, Ti: 0.01-0.40 percent of aluminum and inevitable impurities as the balance, and the prepared aluminum alloy wire has the longitudinal tensile strength of more than or equal to 380MPa, the electric conductivity of more than or equal to 63 percent IACS at 20 ℃, the elongation of more than or equal to 4.0 percent after 250mm gauge length breaking and can be widely applied to overhead transmission lines.
Description
Technical Field
The invention relates to a manufacturing process of a brand-new electrical material for an overhead conductor, in particular to a high-strength high-conductivity aluminum alloy wire for electrical engineering and a manufacturing method thereof.
Background
At present, a large amount of common steel-cored aluminum stranded wires are used on overhead transmission lines in China. With the increasing of national power demand, especially the development of national power grids to extra-high voltage and extra-high voltage lines, the intelligent power grid demand of 'resource saving type, environment-friendly type, new technology, new material and new process' is advocated simultaneously, and novel wires made of novel materials are actively used. Aluminum core aluminum stranded conductor, aluminium package steel strand wires are because ordinary aluminium material tensile strength is low, must attach the steel core or the aluminium package steel core that have the hysteresis loss on structural design as strengthening the core, both increased wire weight, increase the cost of transportation, need higher iron tower again and more firm iron tower land can the base, and not only line corridor area is big, increases the circuit operation loss moreover, reduces transmission capacity.
Chinese patent CN201621328908 discloses an aluminum alloy core high-conductivity aluminum stranded wire, wherein the conductivity of an aluminum wire at an outer layer is only 62.5% IACS, the conductivity of an aluminum wire at an inner layer is 53% IACS 6201, although a steel core or an aluminum-coated steel core with hysteresis loss effect is avoided, the tensile strength of the aluminum wire is less than or equal to 200MPa, the tensile strength of the aluminum alloy wire is less than or equal to 330MPa, the performance resistivity and the tensile strength of the combined wire are still low, and the line loss is large.
Chinese patent CN201410774396 discloses a production method of a high-strength and high-conductivity aluminum alloy wire, but the tensile strength of the aluminum alloy wire is 330-365MPa, the conductivity is 56-58% IACS, the resistivity and the tensile strength are still low, and the line loss is large.
Disclosure of Invention
Aiming at the defects, the invention provides a brand new high-conductivity high-strength aluminum alloy wire with large transmission capacity, large pull-weight ratio, low resistance loss, good sag performance, no hysteresis loss, good ice and wind and snow coating resistance and convenient construction and a manufacturing method thereof.
The technical scheme of the invention is as follows:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.50-0.70%, Fe: 0.10 to 0.50%, Cu: 0.02-0.05%, Mg: 0.52-0.90%, Ti: 0.01 to 0.40% by weight, and the balance aluminum and inevitable impurities.
The aluminum alloy is further added with rare earth elements or graphene or short fibers, the content of the rare earth elements is 0.05-0.40%, the content of the graphene is 0.05-0.30%, and the content of the short fibers is 0.01-0.10%.
The rare earth element is Re element or Y element, and the short fiber is metal short fiber or nonmetal short fiber.
The content of each impurity in the inevitable impurities is less than or equal to 0.03 percent.
A manufacturing method of an electrical aluminum alloy wire with high strength and high conductivity comprises the following specific steps:
selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.50-0.70%, Fe: 0.10 to 0.50%, Cu: 0.02-0.05%, Mg: 0.52-0.90%, Ti: 0.01-0.40%;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to solution treatment at 500-540 ℃ for 4-10 hours, the aluminum alloy rod is placed at room temperature, natural aging is carried out for 4-2500 hours, then a round aluminum alloy wire or a round aluminum alloy wire with the diameter of 1.50-5.2 mm is drawn on a wire drawing device, the aluminum alloy wire or the round aluminum alloy wire is kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and then artificial aging treatment is carried out at the temperature of 130-200 ℃ for 1-10 hours in an aging;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
And in the second step, rare earth elements or graphene or metal short fibers or non-metal short fibers are added into the aluminum liquid.
The rare earth element is Re element or Y element, and the content of the Re element is 0.05-0.40%.
In the third step, the diameter of the aluminum alloy rod with the common specification is phi 9.5-phi 15 mm.
Compared with the prior art, the invention has the beneficial effects that: the prepared aluminum alloy wire has the longitudinal tensile strength of more than or equal to 380MPa, the electric conductivity of more than or equal to 63% IACS at 20 ℃, and the elongation of more than or equal to 4.0% after 250mm gauge length breaking, and can be widely used for overhead transmission lines.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.50%, Fe: 0.18%, Cu: 0.05%, Mg: 0.60%, Ti: 0.12%, Re: 0.20%, and the balance of aluminum and inevitable impurities.
Selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.50%, Fe: 0.18%, Cu: 0.05%, Mg: 0.60%, Ti: 0.12%, Re: 0.20 percent;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to heat preservation for 4-10 hours at 500-540 ℃, the aluminum alloy rod is placed at room temperature, is kept for natural aging for 12 hours, then is drawn into aluminum alloy round wires or molded wires with the diameter of 1.50-5.2 mm on wire drawing equipment, is kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and is subjected to heat preservation for 130 minutes in an aging furnace for artificial aging treatment at the temperature of 130-200 ℃;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
Example 2:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.55%, Fe: 0.20%, Cu: 0.03%, Mg: 0.65%, Ti: 0.01%, Re: 0.10%, the balance being aluminium and unavoidable impurities.
Selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.55%, Fe: 0.20%, Cu: 0.03%, Mg: 0.65%, Ti: 0.01%, Re: 0.10 percent;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to heat preservation for 4-10 hours at 500-540 ℃, the aluminum alloy rod is placed at room temperature, natural aging is kept for 72 hours, then aluminum alloy round wires or molded wires with the diameter of 1.50-5.2 mm are drawn on wire drawing equipment, the aluminum alloy round wires or molded wires are kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and then heat preservation is carried out in an aging furnace at the temperature of 130-200 ℃ for 140 minutes for artificial aging treatment;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
Example 3:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.60%, Fe: 0.24%, Cu: 0.025%, Mg: 0.70%, Ti: 0.20%, Re: 0.15%, and the balance of aluminum and inevitable impurities.
Selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.60%, Fe: 0.24%, Cu: 0.025%, Mg: 0.70%, Ti: 0.20%, Re: 0.15 percent;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to heat preservation for 4-10 hours at 500-540 ℃, the aluminum alloy rod is placed at room temperature, is kept for natural aging for 120 hours, then is drawn into aluminum alloy round wires or molded wires with the diameter of 1.50-5.2 mm on wire drawing equipment, is kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and is subjected to heat preservation for 150 minutes in an aging furnace for artificial aging treatment;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
Example 4:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.65%, Fe: 0.22%, Cu: 0.05%, Mg: 0.82%, Ti: 0.30%, Re: 0.30% and the balance of aluminum and inevitable impurities.
Selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.65%, Fe: 0.22%, Cu: 0.05%, Mg: 0.82%, Ti: 0.30%, Re: 0.30 percent;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to solution treatment at 500-540 ℃ for 4-10 hours, the aluminum alloy rod is placed at room temperature, natural aging is carried out for 800 hours, then a round aluminum alloy wire or a round aluminum alloy wire with the diameter of 1.50-5.2 mm is drawn on wire drawing equipment, the aluminum alloy wire or the round aluminum alloy wire is kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and then artificial aging treatment is carried out in an aging furnace at the temperature of 130-200 ℃ for 160 minutes;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
Example 5:
the high-strength high-conductivity aluminum alloy wire for electricians comprises the following components in percentage by weight: 0.70%, Fe: 0.27%, Cu: 0.04%, Mg: 0.90%, Ti: 0.08%, Re: 0.08%, and the balance of aluminum and inevitable impurities.
Selecting aluminum ingots or aluminum liquid with the impurity weight percentage content of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn and less than or equal to 0.03 percent of each other impurity;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.70%, Fe: 0.27%, Cu: 0.04%, Mg: 0.90%, Ti: 0.08%, Re: 0.08 percent;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to solution treatment at 500-540 ℃ for 4-10 hours, the aluminum alloy rod is placed at room temperature, natural aging is kept for 2000 hours, then aluminum alloy round wires or molded wires with the diameter of 1.50-5.2 mm are drawn on wire drawing equipment, the aluminum alloy round wires or molded wires are kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and then artificial aging treatment is carried out at the temperature of 130-200 ℃ in an aging furnace for 165 minutes;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
Examples 1 to 5: the raw material formulation of the aluminum alloy wire for electricians is shown in table 1, and the implementation effect is shown in table 2.
TABLE 1
Table 2:
as can be seen from tables 1 and 2, the aluminum alloy wire prepared by the invention has the longitudinal tensile strength of more than or equal to 380MPa, the electric conductivity of more than or equal to 63% IACS at 20 ℃ and the elongation of more than or equal to 4.0% after 250mm gauge length breaking, and can be widely applied to overhead transmission lines.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The high-strength high-conductivity aluminum alloy wire for the electrical engineering is characterized in that the aluminum alloy comprises the following components in percentage by weight: 0.50-0.70%, Fe: 0.10 to 0.50%, Cu: 0.02-0.05%, Mg: 0.52-0.90%, Ti: 0.01 to 0.40% by weight, and the balance aluminum and inevitable impurities.
2. The aluminum alloy wire for electrical engineering of claim 1, wherein the aluminum alloy further contains rare earth elements or graphene or short fibers, the content of the rare earth elements is 0.05-0.40%, the content of the graphene is 0.05-0.30%, and the content of the short fibers is 0.01-0.10%.
3. The high-strength high-conductivity electrical aluminum alloy wire as claimed in claim 2, wherein the rare earth element is Re element or Y element, and the short fiber is metal short fiber or non-metal short fiber.
4. A high-strength high-conductivity electrical aluminum alloy wire as claimed in claim 1, wherein the content of each of the inevitable impurities is 0.03% or less.
5. The manufacturing method of the high-strength high-conductivity aluminum alloy wire for the electrician is characterized by comprising the following specific steps of:
selecting aluminum ingots or aluminum liquid with the impurity weight percentage of less than or equal to 0.1 percent of Si, less than or equal to 0.20 percent of Fe, less than or equal to 0.01 percent of Cu, less than or equal to 0.02 percent of Ti + V + Cr + Mn, and less than or equal to 0.03 percent of each impurity in the rest;
and step two, after the aluminum ingot is melted into aluminum liquid in the vertical melting furnace or the aluminum liquid is directly transferred into a heat preservation furnace heated to 750-850 ℃ for alloying treatment, performing chemical rapid analysis on the aluminum liquid in front of the furnace, and adjusting the components of the aluminum liquid according to the weight percentage of each component in the formula after analysis, wherein the main alloy elements in the aluminum liquid are Si: 0.50-0.70%, Fe: 0.10 to 0.50%, Cu: 0.02-0.05%, Mg: 0.52-0.90%, Ti: 0.01-0.40%;
thirdly, after aluminum liquid alloying treatment, deslagging and degassing in an insulation furnace, filtering, casting, rolling, and carrying out on-line quenching to form aluminum alloy rods with the diameter of 9.0-15 mm;
step four, after the aluminum alloy rod is subjected to solution treatment at 500-540 ℃ for 4-10 hours, the aluminum alloy rod is placed at room temperature, natural aging is carried out for 4-2500 hours, then a round aluminum alloy wire or a round aluminum alloy wire with the diameter of 1.50-5.2 mm is drawn on a wire drawing device, the aluminum alloy wire or the round aluminum alloy wire is kept in an oil tank at the constant temperature of 130-200 ℃ for 20-30 minutes, and then artificial aging treatment is carried out at the temperature of 130-200 ℃ for 1-10 hours in an aging;
and step five, stranding the treated wires into the wires with the required specification on a stranding machine.
6. The method as claimed in claim 5, wherein rare earth elements or graphene or short metal fibers or short non-short metal fibers are added to the molten aluminum in the second step.
7. The method as claimed in claim 6, wherein the rare earth element is Re or Y, and the content of Re is 0.05-0.40%.
8. The method for manufacturing the high-strength high-conductivity aluminum alloy wire for the electrical engineering as claimed in claim 5, wherein in the third step, the diameter of the aluminum alloy rod with the common specification is phi 9.5-phi 15 mm.
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| CN114864136A (en) * | 2022-05-23 | 2022-08-05 | 远东电缆有限公司 | High-elongation aluminum-clad steel core aluminum stranded wire and manufacturing method thereof |
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| CN104388763A (en) * | 2014-11-04 | 2015-03-04 | 苏州经贸职业技术学院 | Aluminum alloy material and preparation method thereof |
| CN105369080A (en) * | 2015-10-13 | 2016-03-02 | 国家电网公司 | Method for preparing high-strength aluminum alloy wire for novel energy-saving wire |
| CN106929712A (en) * | 2017-04-01 | 2017-07-07 | 云南铝业股份有限公司 | The alloy round aluminum rod and its production method of intensity in a kind of low resistance |
| CN109295352A (en) * | 2018-11-27 | 2019-02-01 | 华北电力大学 | A kind of yield strength is higher than the high-conductivity aluminum alloy and preparation method thereof of 350MPa |
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| CN114864136A (en) * | 2022-05-23 | 2022-08-05 | 远东电缆有限公司 | High-elongation aluminum-clad steel core aluminum stranded wire and manufacturing method thereof |
| CN114864136B (en) * | 2022-05-23 | 2024-02-20 | 远东电缆有限公司 | High-elongation aluminum-clad steel-cored aluminum stranded wire and manufacturing method thereof |
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