CN115101240A - High-conductivity aluminum alloy conductor and preparation method thereof - Google Patents
High-conductivity aluminum alloy conductor and preparation method thereof Download PDFInfo
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- CN115101240A CN115101240A CN202210799906.9A CN202210799906A CN115101240A CN 115101240 A CN115101240 A CN 115101240A CN 202210799906 A CN202210799906 A CN 202210799906A CN 115101240 A CN115101240 A CN 115101240A
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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
- H01B7/0045—Cable-harnesses
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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
- C22C—ALLOYS
- 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
- C22C49/04—Light metals
- C22C49/06—Aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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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
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Abstract
The invention discloses a high-conductivity aluminum alloy conductor which is prepared from the following raw materials in percentage by weight: 0.3 to 1.0 percent of Si, 0.03 to 0.23 percent of carbon fiber, 0.15 to 0.18 percent of B, 0.06 to 0.14 percent of Ce0.04 to 0.12 percent of Cu, 1.2 to 3.5 percent of Ni1, ZrO and the like 2 1 to 4 percent; 0.02 to 0.05 percent of refining agent; 0.02-0.03% of slag remover; the balance being Al. The aluminum alloy conductor prepared by the inventionThe alloy has high tensile strength, high yield strength, good elongation, high conductivity and good toughness, and can meet the increasing market demand.
Description
Technical Field
The invention relates to the field of aluminum alloy wires. More particularly, the invention relates to a high-conductivity aluminum alloy wire and a preparation method thereof.
Background
With the rapid development of national economy and the continuous improvement of the living standard of people, the demand on electric power is rapidly increased, and the power transmission line is gradually developed towards a large capacity direction, so that the transmission capacity of the lead is required to be increased. The aluminum alloy conductor can meet the use requirements as a special conductor with good performance. In the process of power transmission, the conductivity of the aluminum alloy conductor material has a great determining effect on the use of the manufactured conductor. The conductivity of the conventional aluminum alloy conductor is only 50% IACS, which cannot well meet the requirement of power transmission, so that the conductivity of the aluminum alloy conductor needs to be improved.
Disclosure of Invention
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a preferred embodiment of the present invention provides a high-conductivity aluminum alloy wire, which is made from the following raw materials in percentage by weight:
in another aspect, a preferred embodiment of the present invention is a method for preparing a high-conductivity aluminum alloy wire, comprising the steps of:
s1, weighing Si, carbon fiber, B, Ce, Cu, Ni and ZrO according to the weight percentage 2 Refining agent, deslagging agent and Al for later use;
s2, firstly, placing the weighed Cu and Al into a melting furnace, heating to 1250-;
s3, continuously adding the weighed B, Ce, Si and nano ZrO into the copper-aluminum melt of the smelting furnace 2 Extracting air in the smelting furnace until the vacuum degree of the smelting furnace is reduced to 0.01-0.03MPa, and continuing to keep the temperature until all the raw materials are completely melted, and stirring to obtain alloy liquid;
s4, after stirring and mixing uniformly, gradually opening the smelting furnace, adding the weighed refining agent and slag remover, keeping the temperature until all the refining agent and slag remover are melted, stirring uniformly, and standing to obtain an alloy mixed solution;
s5, placing 1/3 of the weighed carbon fibers into a mold, pouring alloy mixed liquid into the mold to immerse and wrap the carbon fibers with the alloy liquid, carrying out forming operation to obtain a formed alloy rod, and carrying out solid solution and cold rolling wire drawing treatment to obtain an alloy wire;
and S6, twisting the rest 2/3 carbon fibers on the surface of the alloy wire, and twisting a layer of alloy wire on the surface of the carbon fibers after all the carbon fibers are twisted to obtain the high-conductivity aluminum alloy wire.
Preferably, in step S4, before the alloy mixture is allowed to stand, a modifier is added to the alloy mixture.
Preferably, the alterant is Fe.
Preferably, the heating process in step S2 is step heating, specifically:
heating to 605-;
heating to 1000 ℃ and 1100 ℃, and preserving heat for 30 min;
heating to 1250 ℃ and 1300 ℃, and keeping the temperature for 1 h.
Preferably, the cross-sectional area of the carbon fiber is the same as the cross-sectional area of the alloy wire.
Preferably, the ZrO 2 Is nano ZrO 2 。
The invention at least comprises the following beneficial effects: the aluminum alloy conductor prepared by the invention has the advantages of high tensile strength, high yield strength, good elongation, high conductivity and good toughness, and can meet the increasing market demands.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Example 1
In one aspect, a preferred embodiment of the present invention provides a high-conductivity aluminum alloy wire, which is prepared from the following raw materials in percentage by weight:
in the above embodiment, boron is added to the aluminum alloy liquid, which can react with impurity metals and impurity non-metals that are difficult to remove in the aluminum alloy to cause a boronization reaction, thereby forming a precipitate.
In another aspect, a preferred embodiment of the present invention is a method for preparing a high-conductivity aluminum alloy wire, comprising the steps of:
s1, weighing Si, carbon fiber, B, Ce, Cu, Ni and ZrO according to the weight percentage 2 Refining agent, deslagging agent and Al for later use;
s2, firstly, placing the weighed Cu and Al into a melting furnace, heating to 1250 ℃, and obtaining a copper-aluminum melt after the Cu and Al are melted;
s3, continuously adding the weighed B, Ce, Si and nano ZrO into the copper-aluminum melt of the smelting furnace 2 Extracting air in the smelting furnace until the vacuum degree of the smelting furnace is reduced to 0.02MPa, and continuing to keep the temperature until all the raw materials are completely melted and stirring to obtain alloy liquid;
s4, after stirring and mixing uniformly, gradually opening the smelting furnace, adding the weighed refining agent and slag remover, keeping the temperature until all the refining agent and slag remover are melted, stirring uniformly, and standing to obtain an alloy mixed solution;
s5, placing 1/3 of the weighed carbon fibers into a mold, pouring an alloy mixed solution into the mold to immerse and wrap the carbon fibers with the alloy solution, carrying out forming operation to obtain a formed alloy rod, and carrying out solid solution and cold rolling wire drawing treatment to the formed alloy rod to obtain an alloy wire;
and S6, twisting the rest 2/3 carbon fibers on the surface of the alloy wire, and twisting a layer of alloy wire on the surface of the carbon fibers after all the carbon fibers are twisted, so as to obtain the high-conductivity aluminum alloy wire.
In the embodiment, the deslagging agent is added, so that impurities in the deslagging agent can be removed, and the purity of the aluminum alloy liquid is kept. The rare earth elements are added, and can refine the crystal grains of the aluminum alloy, inhibit recrystallization and crystal grain growth, and improve the conductivity of the material; the copper can also react with impurity elements in the aluminum block to precipitate the impurity elements at the bottom of the furnace, so that lattice distortion caused by the impurity elements can be avoided, and collision between electrons and distorted lattice atoms in the transmission process is reduced, thereby improving the conductivity.
In one embodiment, before the alloy mixture is allowed to stand in step S4, a modifier is added to the alloy mixture. The alterant is Fe.
In the embodiment, the alterant is added into the alloy liquid, and the sodium salt alterant can refine primary crystals of the compound, is beneficial to casting and subsequent wire drawing treatment, and improves the conductivity.
In one embodiment, the heating process in step S2 is step heating, and specifically includes: heating to 750 deg.C, and maintaining the temperature for 30 min; heating to 1000 deg.C, and maintaining the temperature for 30 min; heating to 1250 ℃, and preserving heat for 1 h.
In one embodiment, the cross-sectional area of the carbon fiber is the same as the cross-sectional area of the alloy wire.
In one embodiment, the ZrO 2 Is nano ZrO 2 。
Example 2
In one aspect, a preferred embodiment of the present invention provides a high-conductivity aluminum alloy wire, which is prepared from the following raw materials in percentage by weight:
in the above embodiment, boron is added to the aluminum alloy liquid, which can react with impurity metals and impurity non-metals that are difficult to remove in the aluminum alloy to cause a boronization reaction, thereby forming a precipitate.
In another aspect, a preferred embodiment of the present invention is a method for preparing a high-conductivity aluminum alloy wire, including the steps of:
s1, weighing Si, carbon fiber, B, Ce, Cu, Ni and ZrO according to the weight percentage 2 Refining agent, deslagging agent and Al for later use;
s2, firstly, placing the weighed Cu and Al into a melting furnace, heating to 1250 ℃, and obtaining a copper-aluminum melt after the Cu and Al are melted;
s3, continuously adding the weighed B, Ce, Si and nano ZrO into the copper-aluminum melt of the smelting furnace 2 Extracting air in the smelting furnace until the vacuum degree of the smelting furnace is reduced to 0.02MPa, and continuing to keep the temperature until all the raw materials are completely melted and stirring to obtain alloy liquid;
s4, after stirring and mixing uniformly, gradually opening the smelting furnace, adding the weighed refining agent and slag remover, keeping the temperature until all the refining agent and slag remover are melted, stirring uniformly, and standing to obtain an alloy mixed solution;
s5, placing 1/3 of the weighed carbon fibers into a mold, pouring an alloy mixed solution into the mold to immerse and wrap the carbon fibers with the alloy solution, carrying out forming operation to obtain a formed alloy rod, and carrying out solid solution and cold rolling wire drawing treatment to the formed alloy rod to obtain an alloy wire;
and S6, twisting the rest 2/3 carbon fibers on the surface of the alloy wire, and twisting a layer of alloy wire on the surface of the carbon fibers after all the carbon fibers are twisted to obtain the high-conductivity aluminum alloy wire.
In the embodiment, the deslagging agent is added, so that impurities in the deslagging agent can be removed, and the purity of the aluminum alloy liquid is kept. The rare earth elements are added, and can refine the crystal grains of the aluminum alloy, inhibit recrystallization and crystal grain growth, and improve the conductivity of the material; the copper can also react with impurity elements in the aluminum block to precipitate the impurity elements at the bottom of the furnace, so that lattice distortion caused by the impurity elements can be avoided, and collision between electrons and distorted lattice atoms in the transmission process is reduced, thereby improving the conductivity.
In one embodiment, before the alloy mixture is allowed to stand in step S4, a modifier is added to the alloy mixture. The alterant is Fe.
In the embodiment, the alterant is added into the alloy liquid, and the sodium salt alterant can refine primary crystals of the compound, is beneficial to casting and subsequent wire drawing treatment, and improves the conductivity.
In one embodiment, the heating process in step S2 is step heating, specifically: heating to 605-; heating to 1000 ℃ and 1100 ℃, and preserving heat for 30 min; heating to 1250 ℃ and 1300 ℃, and keeping the temperature for 1 h.
In one embodiment, the cross-sectional area of the carbon fiber is the same as the cross-sectional area of the alloy wire.
In one embodiment, the ZrO 2 Is nano ZrO 2 。
Example 3
In one aspect, a preferred embodiment of the present invention provides a high-conductivity aluminum alloy wire, which is prepared from the following raw materials in percentage by weight:
in the above embodiment, boron is added to the aluminum alloy liquid, which can react with impurity metals and impurity non-metals that are difficult to remove in the aluminum alloy to cause a boronization reaction, thereby forming a precipitate.
In another aspect, a preferred embodiment of the present invention is a method for preparing a high-conductivity aluminum alloy wire, including the steps of:
s1, weighing Si, carbon fiber, B, Ce, Cu, Ni and ZrO according to the weight percentage 2 Refining agent, deslagging agent and Al for later use;
s2, firstly, placing the weighed Cu and Al into a melting furnace, heating to 1250 ℃, and obtaining a copper-aluminum melt after the Cu and Al are melted;
s3, continuously adding the weighed B, Ce, Si and nano ZrO into the copper-aluminum melt of the smelting furnace 2 Extracting air in the smelting furnace until the vacuum degree of the smelting furnace is reduced to 0.02MPa, and continuing to keep the temperature until all the raw materials are completely melted and stirring to obtain alloy liquid;
s4, after stirring and mixing uniformly, gradually opening the smelting furnace, adding the weighed refining agent and slag remover, keeping the temperature until all the refining agent and slag remover are melted, stirring uniformly, and standing to obtain an alloy mixed solution;
s5, placing 1/3 of the weighed carbon fibers into a mold, pouring alloy mixed liquid into the mold to immerse and wrap the carbon fibers with the alloy liquid, carrying out forming operation to obtain a formed alloy rod, and carrying out solid solution and cold rolling wire drawing treatment to obtain an alloy wire;
and S6, twisting the rest 2/3 carbon fibers on the surface of the alloy wire, and twisting a layer of alloy wire on the surface of the carbon fibers after all the carbon fibers are twisted to obtain the high-conductivity aluminum alloy wire.
In the embodiment, the deslagging agent is added, so that impurities in the deslagging agent can be removed, and the purity of the aluminum alloy liquid is kept. The rare earth elements are added, and can be used for refining the crystal grains of the aluminum alloy, inhibiting recrystallization and crystal grain growth and improving the conductivity of the material; the copper can also react with impurity elements in the aluminum block to precipitate the impurity elements at the bottom of the furnace, so that lattice distortion caused by the impurity elements can be avoided, and collision between electrons and distorted lattice atoms in the transmission process is reduced, thereby improving the conductivity.
In one embodiment, before the alloy mixture is allowed to stand in step S4, a modifier is added to the alloy mixture. The alterant is Fe.
In the embodiment, the alterant is added into the alloy liquid, and the sodium salt alterant can refine primary crystals of the compound, is beneficial to casting and subsequent wire drawing treatment, and improves the conductivity.
In one embodiment, the heating process in step S2 is step heating, specifically: heating to 605-; heating to 1000 deg.C, and maintaining the temperature for 30 min; heating to 1250 ℃, and preserving heat for 1 h.
In one embodiment, the cross-sectional area of the carbon fiber is the same as the cross-sectional area of the alloy wire.
In one embodiment, the ZrO 2 Is nano ZrO 2 。
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (7)
1. The high-conductivity aluminum alloy conductor is characterized by being prepared from the following raw materials in percentage by weight:
the balance being Al.
2. The method for preparing the high-conductivity aluminum alloy conductor as set forth in claim 1, comprising the steps of:
s1, weighing Si, carbon fiber, B, Ce, Cu, Ni and ZrO according to the weight percentage 2 Refining agent, deslagging agent and Al for later use;
s2, firstly, placing the weighed Cu and Al into a melting furnace, heating to 1250-;
s3, continuously adding the weighed B, Ce, Si and nano ZrO into the copper-aluminum melt of the smelting furnace 2 Extracting air in the smelting furnace until the vacuum degree of the smelting furnace is reduced to 0.01-0.03MPa, and continuing to keep the temperature until all the raw materials are completely melted, and stirring to obtain alloy liquid;
s4, after stirring and mixing uniformly, gradually opening the smelting furnace, adding the weighed refining agent and slag remover, keeping the temperature until all the refining agent and slag remover are melted, stirring uniformly, and standing to obtain an alloy mixed solution;
s5, placing 1/3 of the weighed carbon fibers into a mold, pouring an alloy mixed solution into the mold to immerse and wrap the carbon fibers with the alloy solution, carrying out forming operation to obtain a formed alloy rod, and carrying out solid solution and cold rolling wire drawing treatment to the formed alloy rod to obtain an alloy wire;
and S6, twisting the rest 2/3 carbon fibers on the surface of the alloy wire, and twisting a layer of alloy wire on the surface of the carbon fibers after all the carbon fibers are twisted to obtain the high-conductivity aluminum alloy wire.
3. The method of claim 2, wherein an alterant is added to the alloy mixture before the step S4.
4. The method for preparing the aluminum alloy conductor with high conductivity as claimed in claim 3, wherein the modifier is Fe.
5. The method for preparing the aluminum alloy conductor with high conductivity as claimed in claim 2, wherein the heating process in the step S2 is step heating, specifically:
heating to 605-;
heating to 1000-1100 ℃, and preserving the heat for 30 min;
heating to 1250 ℃ and 1300 ℃, and preserving the heat for 1 h.
6. The method for preparing the high-conductivity aluminum alloy wire according to claim 2, wherein the cross-sectional area of the carbon fiber is consistent with that of the alloy wire.
7. The method for producing an aluminum alloy wire with high conductivity as set forth in claim 2, wherein the ZrO 2 is added 2 Is nano ZrO 2 。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210799906.9A CN115101240A (en) | 2022-07-08 | 2022-07-08 | High-conductivity aluminum alloy conductor and preparation method thereof |
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| CN202210799906.9A CN115101240A (en) | 2022-07-08 | 2022-07-08 | High-conductivity aluminum alloy conductor and preparation method thereof |
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| CN115101240A true CN115101240A (en) | 2022-09-23 |
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| CN202210799906.9A Pending CN115101240A (en) | 2022-07-08 | 2022-07-08 | High-conductivity aluminum alloy conductor and preparation method thereof |
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