CN105950893A - Low-cost 63% IACS high-conductivity duralumin conductor and manufacturing method thereof - Google Patents

Low-cost 63% IACS high-conductivity duralumin conductor and manufacturing method thereof Download PDF

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Publication number
CN105950893A
CN105950893A CN201610388851.7A CN201610388851A CN105950893A CN 105950893 A CN105950893 A CN 105950893A CN 201610388851 A CN201610388851 A CN 201610388851A CN 105950893 A CN105950893 A CN 105950893A
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aluminum
conductor
wire
equal
iacs
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CN201610388851.7A
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CN105950893B (en
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孔涛
徐静
汪传斌
冯砚厅
张志力
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Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Far East Cable Co Ltd
New Far East Cable Co Ltd
Far East Composite Technology Co Ltd
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Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
Far East Cable Co Ltd
New Far East Cable Co Ltd
Far East Composite Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
    • H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Conductive Materials (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

The invention discloses a low-cost 63% IACS high-conductivity duralumin conductor and a manufacturing method thereof. The method comprises the steps that firstly, electrician aluminum is smelted, wherein a 99.90% high-purity aluminum ingot is selected; secondly, rare earth treatment and boronizing treatment are conducted on molten aluminum, all elements in the molten aluminum comprise, by mass percent, smaller than or equal to 0.03 wt% of Si, smaller than or equal to 0.06 wt% of Fe, smaller than or equal to 0.005 wt% of (Cr+V+Mn+Ti), 0.01 wt%-0.03 wt% of B, 0.01 wt%-0.03 wt% of rare earth and larger than or equal to 99.88 wt% of Al, and the rare earth includes La, Y and Er; thirdly, the molten aluminum in the second step is continuously cast and rolled, an aluminum rod is produced, the aluminum rod with the diameter phi of 7.5 mm is extruded through an aluminum extruder, and aluminum wires of various shapes and specifications are formed through cold drawing and drawing; and fourthly, the aluminum wires are stranded to form the aluminum conductor according to the design requirement, wherein the tensile strength of the aluminum conductor is larger than or equal to 168 MPa, and the conductor resistance rate is smaller than or equal to 0.027350 omega.mm<2>/m at the temperature of 20 DEG C. The duralumin conductor has excellent electric conduction performance, the cost of the conductor is reduced by 15%-25%, and the economic efficiency of a circuit is further improved.

Description

A kind of low cost 63%IACS high-conductivity hard aluminum wire and manufacture method thereof
Technical field
The present invention relates to a kind of low cost 63%IACS high-conductivity hard aluminum wire and manufacture method thereof.
Background technology
The feature of China's power construction development strategy is to greatly develop electric power resources in the West, it is achieved transferring electricity from the west to the east and whole nation connection Net, in order to complete above-mentioned strategic objective, State Grid's development, by the strategic plan of development of the West Regions of combining closely, is sent out energetically Exhibition electric power resources in the West.At present, along with the high speed development of national economy, power grid construction is accelerated.But, the damage of electric energy Consumption is consequently increased, and investigates according to power department, and national grid loss is more than the 8.9% of electrical grid transmission electricity, huge Electric energy loss makes China work about electric power person recognize the electric conductivity improving aluminum already, improves the importance of the transfer efficiency of electrical network And urgency.At present, high volume applications obtains electrician's aluminium conductor (including electrician's aluminium conductor that rare earth optimization processes) conductivity For 61%IACS.Along with the progress of science and technology, improve electrician's duralumin conductivity further and just become in industry New problem.Electrician's aluminium conductor conductivity is brought up to 62.5%IACS by 61%IACS, the most just becomes new period aluminium conductor The direction of research and development.
The steel core high conductivity aluminum stranded conductor of current domestic 62.5%IACS is by a plurality of line applications.In order to drop further Low energy consumption, economizes on resources to greatest extent, improves the conductivity of duralumin to 63%IACS, can subtract the most accordingly Few electric energy loss more than 3.3%, has the saving of 50,000,000,000 degree of electricity every year, thus electrician's aluminium conductor conductivity brings up to 63%IACS also will become the trend of power network development.However as the raising of aluminium conductor conductivity, its manufacturing cost also phase Should increase, the most domestic 62.5%IACS duralumin conductor many selections 99.85% aluminium ingot being made more maturation is raw material, 63%IACS duralumin conductor many selections 99.99% aluminium ingot is raw material, and 99.99% aluminium ingot is more expensive than 99.85% aluminium ingot about 8000 yuan/ton.
Summary of the invention
First purpose of the present invention is to provide the manufacture method of a kind of low cost 63%IACS high-conductivity hard aluminum wire.
The technical scheme realizing first purpose of the present invention is the system of a kind of low cost 63%IACS high-conductivity hard aluminum wire Make method, comprise the following steps:
Step one: electrician's aluminum melting: select high-purity aluminium ingot of 99.90%；
Step 2: aluminum liquid carries out RE-treated and borax treatment, in aluminum liquid, each element mass percent controls as follows: Si ≤ 0.03wt%, Fe≤0.06wt%, (Cr+V+Mn+Ti)≤0.005wt%, B:0.01～0.03wt%, rare earth: 0.01～0.03wt%, Al content >=99.88wt%；Described rare earth is La, Y, Er；
Step 3: aluminum bar is produced in the aluminum liquid continuous casting and rolling of step 2, through the aluminum bar of aluminum-extruding machine extrusion Φ 7.5mm, logical Cross cold drawing and be drawn into the aluminium wire of variously-shaped specification；
Step 4: aluminium wire is carried out being twisted into aluminum conductor according to design requirement, the tensile strength >=168MPa of aluminum conductor, Conductor resistance rate≤0.027350 Ω mm when 20 DEG C2/m。
In described step 2, the cast temperature of continuous casting and rolling is 720～740 DEG C, and entering to roll temperature is 500～520 DEG C, anti-tensile Strength control 110～120MPa, percentage elongation >=8%, conductor resistance rate≤0.027250 Ω mm when 20 DEG C2/m。
In described step 3, the temperature of aluminum-extruding machine extrusion aluminum bar is 400～450 DEG C, and compression ratio is 6～25；The Φ 7.5 of extrusion Aluminum bar tensile strength control 95～110MPa, percentage elongation >=10%, conductor resistance rate≤0.027180 when 20 DEG C Ω·mm2/m。
In described step 3, the tensile strength >=170MPa of the aluminium wire that cold drawing is drawn into, conductor resistance rate when 20 DEG C≤ 0.027300Ω·mm2/m。
Second object of the present invention is to provide a kind of low cost 63%IACS high-conductivity hard aluminum wire.
The technical scheme realizing second purpose of the present invention is a kind of low cost 63%IACS high-conductivity hard aluminum wire, its It is characterised by: include being positioned at the strengthening core at center and be positioned at the stranded aluminum single line outside strengthening core；Described stranded aluminum single line At least one layer；The aluminum single line of every layer is formed according to the aluminum conductor of preceding method manufacture is stranded by many；Described strengthening core is Steel core or aluminum Baogang core or fiber-reinforced resin base composite core.The cross sectional shape of every aluminum conductor can be circular, fan Shape or shoe etc..
After have employed technique scheme, the present invention has positive effect: the technique of (1) present invention uses cheap a lot 99.90% aluminium ingot produce the hard aluminum wire of high conductivity, cost is using the former technique of raw material 99.99% aluminium ingot On reduce 15～25%.
(2) present invention uses borax treatment and RE-treated aluminum liquid, is simultaneously introduced tri-kinds of rare earth elements of La, Y, Er and hands over Interaction, tri-kinds of rare earth elements of La, Y, Er can effectively purify aluminum liquid, with the objectionable impurities being solid-solution in aluminum after addition Form stable intermetallic compound, and separate out at crystal boundary, reduce impurity element solid solubility in aluminum, thus improve aluminum Electric conductivity.La can be combined formation high-melting-point, the compound of Specific gravity with the low melting point element such as P, Sn, As, and these are changed Compound forms aluminum slag and swims in aluminum liquid surface, removes when skimming, and meanwhile, La also helps the units such as Al, Mg, Si, Ti It is spherical or corynebacterium precipitation that element forms intermetallic compound；The magazine element such as oxygen, hydrogen, nitrogen, sulfur, ferrum in yttrium and melt Having stronger combination, play clean-up effect, yttrium solid solubility in aluminum is little, and its meeting segregation, in solid-liquid boundary region, hinders Hinder the diffusion of the solute atoms such as Zn, Mg, Cu, the effect suitably reducing crystallite dimension can be played；Y, Er are conducive to AlTiV The precipitation of intermetallic compound, the electric conductivity of aluminium conductor is endangered very big by Ti, V, by RE-treated be reduce Ti, The important channel of V.But content of rare earth is too high, impurity element can be caused to be enriched with, too low can not effectively and impurity element Reciprocal action occurs, and therefore the rare earth content of the present invention is optimum amount.
(3) hard aluminum wire of the present invention has excellent electric conductivity, considerably reduces line loss, improves remote Distance transfer efficiency, reduces electricity power engineering cost of investment, improves economy operation of power grid level.Use this technique to produce simultaneously Reduce the manufacturing cost of traditional handicraft, reduce the cost 15～25% of wire, improve the economy of circuit further.
Detailed description of the invention
(embodiment 1)
Detection raw material, selecting the trade mark is Al99.90 aluminium ingot 5T, and sampling carries out chemical analysis (composition is shown in Table 1), puts Entering the molten middle fusing of aluminium ingot melting, add the aluminum-boron alloy ingot 12kg that the trade mark is AlB8 in holding furnace, the trade mark is AlY10 Aluminum yittrium alloy ingot 12kg, the trade mark is the aluminum lanthanum alloy ingot 15kg of AlLa10, and the trade mark is the Al-Er alloy ingot of AlEr10 12kg, through uniform stirring, refine degasification, refining temperature 760～800 DEG C, refining time 30～45 minutes, removes the gred, quiet Putting, time of repose 30～40 minutes, sample analysis, according to the in good time supplementary material of composition analysis result, detection regulates and controls each unit Cellulose content (is shown in Table 2)；Then cast, cast temperature 720～740 DEG C, enter to roll temperature 500～520 DEG C, be rolled into The aluminum bar of Φ 12mm, the performance of aluminum bar such as table 3；The aluminum bar of Φ 12mm through Kang Fang aluminum-extruding machine in die cavity through high temperature friction After under 400～450 DEG C of High Temperature High Pressure extrusion obtain the aluminum bar of Φ 7.5, compression ratio is 6～25, the property of the aluminum bar of Φ 7.5 4 can be shown in Table；Use the aluminum bar cold drawing of the Φ 7.5 of extrusion, if drawing the duralumin round wires of Φ 3.22 after the mould of arterial highway, its Performance is shown in Table 5.This duralumin round wires using same quality is twisted into the wire of 400/35 through frame winch and steel core, wire Performance is shown in Table 6.
Table 1 raw material each composition situation (wt%)
Al Si Fe Cu Mg Ca Cr+V+Mn+Ti Other
Embodiment 1 99.90 0.025 0.046 0.0005 0.0013 0.0007 0.0061 0.0204
Composition situation (wt%) in table 2 stove
Table 3 Φ 12mm aluminum bar performance
Φ 7.5mm aluminum bar performance extruded by table 4
Table 5 duralumin round wires performance
The stranded rear finished product wire of table 6 and aluminum single line performance
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail Illustrate, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this Within bright protection domain.

Claims (5)

1. the manufacture method of a low cost 63%IACS high-conductivity hard aluminum wire, it is characterised in that comprise the following steps:
Step one: electrician's aluminum melting: select high-purity aluminium ingot of 99.90%；
Step 2: aluminum liquid carries out RE-treated and borax treatment, in aluminum liquid, each element mass percent controls as follows: Si ≤ 0.03wt%, Fe≤0.06wt%, (Cr+V+Mn+Ti)≤0.005wt%, B:0.01～0.03wt%, rare earth: 0.01～0.03wt%, Al content >=99.88wt%；Described rare earth is La, Y, Er；
Step 3: aluminum bar is produced in the aluminum liquid continuous casting and rolling of step 2, through the aluminum bar of aluminum-extruding machine extrusion Φ 7.5mm, logical Cross cold drawing and be drawn into the aluminium wire of variously-shaped specification；
Step 4: aluminium wire is carried out being twisted into aluminum conductor according to design requirement, the tensile strength >=168MPa of aluminum conductor, Conductor resistance rate≤0.027350 Ω mm when 20 DEG C2/m。
The manufacture method of a kind of low cost 63%IACS high-conductivity hard aluminum wire the most according to claim 1, its Being characterised by: in described step 2, the cast temperature of continuous casting and rolling is 720～740 DEG C, and entering to roll temperature is 500～520 DEG C, Tensile strength controls 110～120MPa, percentage elongation >=8%, conductor resistance rate≤0.027250 Ω mm when 20 DEG C2/m。
A kind of low cost 63%IACS high-conductivity hard aluminum wire the most according to claim 1 and manufacture method thereof, It is characterized in that: in described step 3, the temperature of aluminum-extruding machine extrusion aluminum bar is 400～450 DEG C, and compression ratio is 6～25； The aluminum bar tensile strength of Φ 7.5 of extrusion controls 95～110MPa, percentage elongation >=10%, and conductor resistance rate when 20 DEG C≤ 0.027180Ω·mm2/m。
The manufacture method of a kind of low cost 63%IACS high-conductivity hard aluminum wire the most according to claim 1, its It is characterised by: in described step 3, the tensile strength >=170MPa of the aluminium wire that cold drawing is drawn into, conductor electricity when 20 DEG C Resistance rate≤0.027300 Ω mm2/m。
5. a low cost 63%IACS high-conductivity hard aluminum wire, it is characterised in that: include the strengthening core being positioned at center With the stranded aluminum single line being positioned at outside strengthening core；Described stranded aluminum single line is at least one layer；The aluminum single line of every layer is by many Form according to the aluminum conductor of the manufacture method manufacture one of claim 1-4 Suo Shu is stranded；Described strengthening core be steel core or Aluminum Baogang core or fiber-reinforced resin base composite core.
CN201610388851.7A 2016-06-02 2016-06-02 A kind of inexpensive 63%IACS high-conductivity hard aluminum wires and its manufacture method Active CN105950893B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108376576A (en) * 2018-02-26 2018-08-07 远东电缆有限公司 A kind of big section aluminum steel production technology and the compound wire using the aluminum steel
CN109234580A (en) * 2018-08-03 2019-01-18 特变电工山东鲁能泰山电缆有限公司 A kind of high-strength conductive rate aluminium bar material and production method
WO2019112997A1 (en) * 2017-12-07 2019-06-13 NanoAL LLC 8000-series aluminum alloy
CN110819852A (en) * 2019-10-30 2020-02-21 全球能源互联网研究院有限公司 High-conductivity soft aluminum monofilament with good heat resistance and preparation method thereof
US10633725B2 (en) 2015-10-14 2020-04-28 NaneAL LLC Aluminum-iron-zirconium alloys
CN111485150A (en) * 2020-06-09 2020-08-04 天津忠旺铝业有限公司 Preparation method of high-conductivity aluminum alloy plate strip

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CN103854807A (en) * 2014-02-26 2014-06-11 远东电缆有限公司 High-conductivity hard aluminum wire and preparing technology thereof
CN104532074A (en) * 2014-12-29 2015-04-22 湖南金龙电缆有限公司 High-conductivity hard aluminum lead and manufacturing method thereof
CN104946936A (en) * 2015-05-29 2015-09-30 国网智能电网研究院 High-conductivity rare earth duralumin monofilament material for overhead conductors
CN105369073A (en) * 2015-10-15 2016-03-02 远东电缆有限公司 High-strength heat-resistant aluminum alloy single line and wire for smart power grid and processing process of single line

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WO2002044432A1 (en) * 2000-11-30 2002-06-06 Phelps Dodge Industries, Inc. Creep resistant cable wire
CN101834012A (en) * 2010-04-23 2010-09-15 无锡华能电缆有限公司 High-conductivity hard aluminum wire and manufacture method thereof
CN103730203A (en) * 2013-12-26 2014-04-16 远东电缆有限公司 Composite core high-conductivity duralumin conductor and manufacturing method thereof
CN103854807A (en) * 2014-02-26 2014-06-11 远东电缆有限公司 High-conductivity hard aluminum wire and preparing technology thereof
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10633725B2 (en) 2015-10-14 2020-04-28 NaneAL LLC Aluminum-iron-zirconium alloys
WO2019112997A1 (en) * 2017-12-07 2019-06-13 NanoAL LLC 8000-series aluminum alloy
CN108376576A (en) * 2018-02-26 2018-08-07 远东电缆有限公司 A kind of big section aluminum steel production technology and the compound wire using the aluminum steel
CN109234580A (en) * 2018-08-03 2019-01-18 特变电工山东鲁能泰山电缆有限公司 A kind of high-strength conductive rate aluminium bar material and production method
CN110819852A (en) * 2019-10-30 2020-02-21 全球能源互联网研究院有限公司 High-conductivity soft aluminum monofilament with good heat resistance and preparation method thereof
CN111485150A (en) * 2020-06-09 2020-08-04 天津忠旺铝业有限公司 Preparation method of high-conductivity aluminum alloy plate strip

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