CN103451498B - Intermediate strength aluminum alloy wire for overhead conductor - Google Patents
Intermediate strength aluminum alloy wire for overhead conductor Download PDFInfo
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- CN103451498B CN103451498B CN201310401911.0A CN201310401911A CN103451498B CN 103451498 B CN103451498 B CN 103451498B CN 201310401911 A CN201310401911 A CN 201310401911A CN 103451498 B CN103451498 B CN 103451498B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 134
- 239000004020 conductor Substances 0.000 title abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 121
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 121
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 57
- 239000000956 alloy Substances 0.000 claims abstract description 57
- 238000010791 quenching Methods 0.000 claims abstract description 43
- 230000032683 aging Effects 0.000 claims abstract description 30
- 230000000171 quenching effect Effects 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims description 81
- 239000007788 liquid Substances 0.000 claims description 69
- 238000005491 wire drawing Methods 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000007670 refining Methods 0.000 claims description 20
- 238000005266 casting Methods 0.000 claims description 18
- 229910000906 Bronze Inorganic materials 0.000 claims description 17
- 229910001051 Magnalium Inorganic materials 0.000 claims description 17
- PSNPEOOEWZZFPJ-UHFFFAOYSA-N alumane;yttrium Chemical compound [AlH3].[Y] PSNPEOOEWZZFPJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000010974 bronze Substances 0.000 claims description 17
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 17
- 239000000470 constituent Substances 0.000 claims description 16
- 239000011777 magnesium Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- 238000003801 milling Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 229910052727 yttrium Inorganic materials 0.000 claims description 11
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007669 thermal treatment Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- 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
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- 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
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The invention belongs to the technical field of overhead conductors of electric transmission lines, and particularly relates to an intermediate strength aluminum alloy wire for an overhead conductor. According to the intermediate strength aluminum alloy wire provided by the invention, solution treatment is effectively carried out on an aluminum alloy rod and subsequent aging treatment realizes a better effect through certain alloy composition adjustment, rolling and control of online quenching, so that the intermediate strength aluminum alloy wire with the elongation which is not less than 3.5%, the electric conductivity which is not less than 58.5%IACS (International Annealed Copper Standard) and the tensile strength which is not less than 245MPa is finally obtained. The elongation of the intermediate strength aluminum alloy wire provided by the invention is remarkably superior to that of aluminum alloy wires in the prior art. The intermediate strength aluminum alloy wire has the advantages that the wire is great in pulling weight ratio, good in sag characteristic, good in high temperature characteristic and damage- resistant in the surface. As no steel cores are available, magnetic hysteresis loss and eddy loss are avoided. In operation, the alternating current resistance of the wire is lower than that of aluminum cable steel reinforced, so that the electric energy loss is reduced. The intermediate strength aluminum alloy wire provided by the invention is used more and more in electric transmission lines and has a wider range of application.
Description
Technical field
The invention belongs to the technical field of transmitting line aerial condutor, particularly relate to strength aluminium alloy line in a kind of aerial condutor use.
Background technology
At present, middle strength aluminium alloy is mainly Aludur system, and the method manufacturing such alloy mainly contains two different operational paths, i.e. artificial aging thermal treatment type and natural aging thermal treatment type.The manufacture method of the middle strength aluminium alloy line of two kinds of different electric conductivitys is refer to respectively in patent CN102041418A and patent CN102162050A, these two kinds of methods need to carry out solution treatment and quench treatment to it after obtained aluminium alloy rod, need again to carry out artificial aging process to it after aluminium alloy rod is drawn into aluminum alloy line, what namely adopt is artificial aging thermal treatment type operational path.Middle strength aluminium alloy acquired by it linearly can be respectively: electric conductivity is not less than 57%IACS, and tensile strength is 245 MPa ~ 290MPa, and elongation is 1.8% ~ 3.0%; Electric conductivity is not less than 59%IACS, and tensile strength is 230 MPa ~ 250MPa, and elongation is 2.0%; Patent CN102766788A refer to and adopts strength aluminium alloy line in the preparation of natural aging treatment operational path, namely after obtained Aludur bar, and does not need to carry out artificial aging process after rod of metal alloy is drawn into alloy wire, only needs natural aging treatment.The middle strength aluminium alloy performance obtained is: electric conductivity is not less than 57%IACS, and tensile strength is not less than 250 MPa, and elongation is not less than 2.0%; Electric conductivity is not less than 59%IACS, and tensile strength is not less than 235 MPa, and elongation is not less than 2.0%.
Due to the characteristic of overhead transmission line, there is certain requirement to the unit elongation of wire, so that wire has certain anti-overload ability and fatigue performance.Existing technology is obviously too small in middle strength aluminium alloy line elongation.
Summary of the invention
For above-mentioned the deficiencies in the prior art part, the invention provides strength aluminium alloy line in a kind of aerial condutor use.Object is the problem for understanding strength aluminium alloy line elongation deficiency less than normal at present.
In order to realize the object of the invention, the present invention is achieved through the following technical solutions:
Strength aluminium alloy line in a kind of aerial condutor use, its technical process concrete steps are as follows:
(1) melting and alloying constituent adjustment: enter in holding furnace after aluminium ingot fusing, control temperature of aluminum liquid at 720 ~ 740 DEG C, add aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy; Obtain alloy aluminum liquid after stirring, make its each constituent content control as follows: silicon is 0.40 ~ 0.50wt%, and magnesium is 0.45 ~ 0.50wt%, and iron is 0.18 ~ 0.23wt%, and copper is 0.04 ~ 0.08wt%, and yttrium is 0.1 ~ 0.2wt%; Other impurity contents are all not more than 0.03wt%;
(2) cast: the molten aluminium alloy in holding furnace is flowed through chute, by ceramic filter plate filtration unit, adds Al-Ti-B silk online, crystal grain thinning; Aluminum alloy melt enters aluminium alloy continuous caster and casts, and aluminium liquid pouring temperature controls at 695 DEG C ~ 705 DEG C; From casting machine out time strand temperature control at 480 DEG C ~ 490 DEG C;
(3) on-line heating: by on-line heating device, makes strand temperature control at 520 DEG C ~ 530 DEG C entering milling train;
(4) rolling: roll into middle strength aluminium alloy bar by aluminium alloy continuous mill, the middle strength aluminium alloy bar temperature after rolling completes controls at 365 DEG C ~ 375 DEG C;
(5) press quenching: the middle strength aluminium alloy bar after rolling completes carries out press quenching subsequently, quench water temperature control is at 28 DEG C ~ 30 DEG C, and the temperature of the middle strength aluminium alloy bar after quenching controls at 45 DEG C ~ 55 DEG C;
(6) wire drawing: wire drawing is carried out to strength aluminium alloy bar in after quench treatment, is drawn into the aluminium alloy single line of required diameter;
(7) artificial aging process: centering strength aluminium alloy bar single line carries out artificial aging process, temperature controls at 180 DEG C ~ 200 DEG C, and time controling, at 5 ~ 6 hours, namely obtains finished product single line after taking-up.
Described middle strength aluminium alloy bar becomes diameter to be the middle strength aluminum alloy bar of 9.5mm.
Described alloying constituent is aluminium ingot, aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy.
The component requirements of described aluminium ingot is as follows: silicon≤0.07wt%, iron≤0.23wt%, magnesium≤0.02wt%, manganese+titanium+chromium+vanadium≤0.02wt%.
Other described impurity elements are manganese, titanium, chromium, vanadium.
In described aluminium silicon master alloy, silicone content is 20wt%, and in magnalium master alloy, Mg content is 50wt%, and in aluminum bronze intermediate alloy, copper content is 10wt%, and in aluminium yttrium master alloy, yttrium content is 10wt%.
Described technical process concrete steps are as follows:
Aluminium ingot is melted at smelting furnace, flows into holding furnace subsequently and be incubated; Aluminium silicon, magnalium, aluminum bronze and the aluminium yttrium master alloy amount needed for composition is added according to the aluminium liquid measure in insulation; Control temperature of aluminum liquid at 730 DEG C; Carry out the process that stirs subsequently, with refining agent, refining is carried out to aluminium liquid, adopt solid insulating covering agent to cover aluminium liquid surface simultaneously, and leave standstill and be not less than 45 minutes, the aluminum refining agent of described refining agent for market is sold;
After aluminium liquid has left standstill, adopt high speed direct-reading capacitance meter to detect the principal element in aluminium liquid, and according to detected result, carry out corresponding alloying constituent adjustment, meet the requirements of alloy aluminum liquid composition;
Subsequently the aluminium liquid in holding furnace is released, flow through chute, by ceramic filter plate filtration unit, in chute, automatically add Al-Ti-B silk, for crystal grain thinning according to the flow of aluminium liquid;
Aluminium liquid enters aluminium alloy continuous caster by casting ladle and casts, and aluminium liquid pouring temperature controls at 700 DEG C; By controlling the flow meter pressure of liquid filling machine water coolant, guarantee from casting machine out time strand temperature control at 480 DEG C;
Strand from casting machine out after, after alignment out, enter on-line heating device, make strand temperature enter milling train time control built in 520 DEG C; Described on-line heating device is intermediate frequency annealing furnace;
Strand to requiring after in temperature range through heating devices heat, enters aluminum alloy rolling unit and is rolled, controlled cooling model emulsion temperature and flow, and the aluminium alloy rod temperature after its rolling is completed controls at 370 DEG C; The middle strength aluminum alloy shank diameter that aluminium alloy continuous mill rolls into is 9.5mm;
From milling train out after aluminium bar enter press quenching device at once, quench water temperature control is at 29 DEG C; The temperature of the aluminium alloy rod after quenching controls at 50 DEG C; Aluminium bar after quenching carries out drum packaging;
Wire drawing is carried out to the aluminium alloy rod after quench treatment, is drawn into the aluminium alloy single line of required diameter.Wire-drawing equipment is conventional sliding type aluminum alloy drawing wire machine, and per pass deformation rate controls 1.25; Drawing speed is at 10 meter per seconds, and during wire drawing, lubricating oil controls below 40 DEG C;
Aluminium alloy single line good for wire drawing is carried out artificial aging process, and temperature controls at 190 DEG C, and time controling was at 5 hours; The room temps scope control of aging oven is within ± 3 DEG C; Namely middle strength aluminium alloy single line is obtained after ageing treatment is complete.
Advantageous effect of the present invention is:
Strength aluminium alloy line in the present invention, the control by the adjustment of certain alloying constituent, rolling and press quenching, its aluminium alloy rod is made to obtain effective solution treatment, follow-up ageing treatment is made to reach better effect, finally obtain elongation and be not less than 3.5%, electric conductivity is not less than 58.5%IACS, and tensile strength is not less than the middle strength aluminium alloy line of 245 MPa.In the present invention, the elongation of strength aluminium alloy line is obviously better than the elongation of the aluminium-alloy wire used in prior art.
Middle intensity all aluminum alloy conductor is a kind of aluminium alloy stranded conductor being twisted system by middle strength aluminium alloy single line.During overhead transmission line adopts, intensity all aluminum alloy conductor has the following advantages compared with the Aluminium Cable Steel Reinforced generally adopted at present: (1) wire draws anharmonic ratio large, and sag characteristic is good, can increase transmission tower span, reduces line construction investment.(2) wire high-temperature characteristic is good, runs at a higher temperature, and loss of strength is few.(3) conductive line surfaces resistant to damage.The hardness of middle strength aluminium alloy is 2 times of aluminum steel, but weight ratio Aluminium Cable Steel Reinforced is light, can reduce conductive line surfaces scratch, improve construction quality during the construction line-putting.Corona loss and radio interference level when the wire of great surface quality can reduce operation.(4) owing to not having steel core, so there is no hysteresis loss and eddy losses, operationally, its alternating current resistance is lower than Aluminium Cable Steel Reinforced, therefore energy loss reduces.Just due to these advantages, middle intensity all aluminium alloy twisted wire is using more and more on transmitting line.
Below in conjunction with the drawings and specific embodiments, the present invention is explained in detail.
Accompanying drawing explanation
Fig. 1 is manufacturing process flow schematic diagram of the present invention.
Embodiment
The present invention is strength aluminium alloy line during a kind of aerial condutor is used, and as shown in Figure 1, its technical process concrete steps are as follows
1, melting and alloying constituent adjustment: enter in holding furnace after aluminium ingot fusing, control temperature of aluminum liquid at 720 ~ 740 DEG C, add aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy.Obtain alloy aluminum liquid after stirring, make its each constituent content control as follows: silicon is 0.40 ~ 0.50wt%, and magnesium is 0.45 ~ 0.50wt%, and iron is 0.18 ~ 0.23wt%, and copper is 0.04 ~ 0.08wt%, and yttrium is 0.1 ~ 0.2wt%.
2, cast: the molten aluminium alloy in holding furnace is flowed through chute, by ceramic filter plate filtration unit, adds Al-Ti-B silk online, crystal grain thinning.Aluminum alloy melt enters aluminium alloy continuous caster and casts, and aluminium liquid pouring temperature controls at 695 DEG C ~ 705 DEG C.From casting machine out time strand temperature control at 480 DEG C ~ 490 DEG C.
3, on-line heating: by on-line heating device, makes strand temperature control at 520 DEG C ~ 530 DEG C entering milling train.
4, rolling: rolling into diameter by aluminium alloy continuous mill is strength aluminium alloy bar in 9.5mm, the middle strength aluminium alloy bar temperature after rolling completes controls at 365 DEG C ~ 375 DEG C.
5, press quenching: the middle strength aluminium alloy bar after rolling completes carries out press quenching subsequently, and quench water temperature control is at 28 DEG C ~ 30 DEG C.The temperature of the middle strength aluminium alloy bar after quenching controls at 45 DEG C ~ 55 DEG C.
6, wire drawing: wire drawing is carried out to strength aluminium alloy bar in after quench treatment, is drawn into the aluminium alloy single line of required diameter.
7, artificial aging process: centering strength aluminium alloy bar finished product single line carries out artificial aging process, and temperature controls at 180 DEG C ~ 200 DEG C, and time controling was at 5 ~ 6 hours.Namely the middle strength aluminium alloy bar finished product single line reaching inventive and can require is obtained after taking-up.
Embodiment 1:
The aluminium ingot selecting certain ingredients to require, aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy are as raw material.
The component requirements of aluminium ingot is as follows
:silicon≤0.07wt%, iron≤0.23wt%, magnesium≤0.02wt%, (manganese+titanium+chromium+vanadium)≤0.02wt%, other are often planted impurity content and are all not more than 0.03wt%.
In aluminium silicon master alloy, silicone content is 20wt%, and in magnalium master alloy, Mg content is 50wt%, and in aluminum bronze intermediate alloy, copper content is 10wt%, and in aluminium yttrium master alloy, yttrium content is 10wt%.
According to technical process shown in Fig. 1, aluminium ingot is melted at smelting furnace, flow into holding furnace subsequently and be incubated.Aluminium silicon, magnalium, aluminum bronze and the aluminium yttrium master alloy amount needed for composition is added according to the aluminium liquid measure in insulation.Control temperature of aluminum liquid at 730 DEG C.Carry out the process that stirs subsequently, with refining agent, refining is carried out to aluminium liquid, adopt solid insulating covering agent to cover aluminium liquid surface simultaneously, and leave standstill and be not less than 45 minutes, the aluminum refining agent of described refining agent for market is sold.
After aluminium liquid has left standstill, adopt high speed direct-reading capacitance meter to detect the principal element in aluminium liquid, and according to detected result, carry out corresponding alloying constituent adjustment, meet the requirements of alloy aluminum liquid composition.Its each constituent content is made to control as follows: silicon is 0.50wt%, and magnesium is 0.50wt%, and iron is 0.23wt%, and copper is 0.08wt%, and yttrium is 0.2wt%.
Subsequently the aluminium liquid in holding furnace is released, flow through chute, by ceramic filter plate filtration unit, in chute, automatically add Al-Ti-B silk, for crystal grain thinning according to the flow of aluminium liquid.
Aluminium liquid enters aluminium alloy continuous caster by casting ladle and casts, and aluminium liquid pouring temperature controls at 700 DEG C.By controlling the flow meter pressure of liquid filling machine water coolant, guarantee from casting machine out time strand temperature control at 480 DEG C.
Strand from casting machine out after, after alignment out, enter on-line heating device, make strand temperature enter milling train time control built in 520 DEG C.Described on-line heating device is intermediate frequency annealing furnace.
Strand to requiring after in temperature range through heating devices heat, enters aluminum alloy rolling unit and is rolled, controlled cooling model emulsion temperature and flow, and the aluminium alloy rod temperature after its rolling is completed controls at 370 DEG C.The middle strength aluminum alloy shank diameter that aluminium alloy continuous mill rolls into is 9.5mm.
From milling train out after aluminium bar enter press quenching device at once, quench water temperature control is at 29 DEG C.The temperature of the aluminium alloy rod after quenching controls at 50 DEG C.Aluminium bar after quenching carries out drum packaging.
Wire drawing is carried out to the aluminium alloy rod after quench treatment, is drawn into the aluminium alloy single line of required diameter.Wire-drawing equipment is conventional sliding type aluminum alloy drawing wire machine, and per pass deformation rate controls 1.25.Drawing speed is at 10 meter per seconds, and during wire drawing, lubricating oil controls below 40 DEG C.
Aluminium alloy single line good for wire drawing is carried out artificial aging process, and temperature controls at 190 DEG C, and time controling was at 5 hours.The room temps scope control of aging oven is within ± 3 DEG C.Can obtain elongation after ageing treatment is complete and be not less than 3.5%, electric conductivity is not less than 58.5%IACS, and tensile strength is not less than the middle strength aluminium alloy line single line of 245 MPa.
Embodiment 2:
The aluminium ingot selecting certain ingredients to require, aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy are as raw material.
The component requirements of aluminium ingot is as follows: silicon≤0.40wt%, iron≤0.18wt%, magnesium≤0.48wt%, and (manganese+titanium+chromium+vanadium)≤0.02wt%, other are often planted impurity content and are all not more than 0.03wt%.In aluminium silicon master alloy, silicone content is 20wt%, and in magnalium master alloy, Mg content is 50wt%, and in aluminum bronze intermediate alloy, copper content is 10wt%, and in aluminium yttrium master alloy, yttrium content is 10wt%.
According to technical process shown in Fig. 1, aluminium ingot is melted at smelting furnace, flow into holding furnace subsequently and be incubated.Aluminium silicon, magnalium, aluminum bronze and the aluminium yttrium master alloy amount needed for composition is added according to the aluminium liquid measure in insulation.Control temperature of aluminum liquid at 720 DEG C.Carry out the process that stirs subsequently, with refining agent, refining is carried out to aluminium liquid, adopt solid insulating covering agent to cover aluminium liquid surface simultaneously, and leave standstill and be not less than 45 minutes, the aluminum refining agent of described refining agent for market is sold.
After aluminium liquid has left standstill, adopt high speed direct-reading capacitance meter to detect the principal element in aluminium liquid, and according to detected result, carry out corresponding alloying constituent adjustment, meet the requirements of alloy aluminum liquid composition.Its each constituent content is made to control as follows: silicon is 0.40wt%, and magnesium is 0.45wt%, and iron is 0.18wt%, and copper is 0.04wt%, and yttrium is 0.1wt%.
Subsequently the aluminium liquid in holding furnace is released, flow through chute, by ceramic filter plate filtration unit, in chute, automatically add Al-Ti-B silk, for crystal grain thinning according to the flow of aluminium liquid.
Aluminium liquid enters aluminium alloy continuous caster by casting ladle and casts, and aluminium liquid pouring temperature controls at 695 DEG C.By controlling the flow meter pressure of liquid filling machine water coolant, guarantee from casting machine out time strand temperature control at 485 DEG C.
Strand from casting machine out after, after alignment out, enter on-line heating device, make strand temperature enter milling train time control built in 525 DEG C.Described on-line heating device is intermediate frequency annealing furnace.
Strand to requiring after in temperature range through heating devices heat, enters aluminum alloy rolling unit and is rolled, controlled cooling model emulsion temperature and flow, and the aluminium alloy rod temperature after its rolling is completed controls at 365 DEG C.The middle strength aluminum alloy shank diameter that aluminium alloy continuous mill rolls into is 9.5mm.
From milling train out after aluminium bar enter press quenching device at once, quench water temperature control is at 28 DEG C.The temperature of the aluminium alloy rod after quenching controls at 45 DEG C.Aluminium bar after quenching carries out drum packaging.
Wire drawing is carried out to the aluminium alloy rod after quench treatment, is drawn into the aluminium alloy single line of required diameter.Wire-drawing equipment is conventional sliding type aluminum alloy drawing wire machine, and per pass deformation rate controls 1.25.Drawing speed is at 10 meter per seconds, and during wire drawing, lubricating oil controls below 40 DEG C.
Aluminium alloy single line good for wire drawing is carried out artificial aging process, and temperature controls at 180 DEG C, and time controling was at 5.5 hours.The room temps scope control of aging oven is within ± 3 DEG C.Can obtain elongation after ageing treatment is complete and be not less than 3.5%, electric conductivity is not less than 58.5%IACS, and tensile strength is not less than the middle strength aluminium alloy line single line of 245 MPa.
Embodiment 3:
The aluminium ingot selecting certain ingredients to require, aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy are as raw material.
The component requirements of aluminium ingot is as follows: silicon≤0.50wt%, iron≤0.20wt%, magnesium≤0.50wt%, and (manganese+titanium+chromium+vanadium)≤0.02wt%, other are often planted impurity content and are all not more than 0.03wt%.In aluminium silicon master alloy, silicone content is 20wt%, and in magnalium master alloy, Mg content is 50wt%, and in aluminum bronze intermediate alloy, copper content is 10wt%, and in aluminium yttrium master alloy, yttrium content is 10wt%.
According to technical process shown in Fig. 1, aluminium ingot is melted at smelting furnace, flow into holding furnace subsequently and be incubated.Aluminium silicon, magnalium, aluminum bronze and the aluminium yttrium master alloy amount needed for composition is added according to the aluminium liquid measure in insulation.Control temperature of aluminum liquid at 740 DEG C.Carry out the process that stirs subsequently, with refining agent, refining is carried out to aluminium liquid, adopt solid insulating covering agent to cover aluminium liquid surface simultaneously, and leave standstill and be not less than 45 minutes, the aluminum refining agent of described refining agent for market is sold.
After aluminium liquid has left standstill, adopt high speed direct-reading capacitance meter to detect the principal element in aluminium liquid, and according to detected result, carry out corresponding alloying constituent adjustment, meet the requirements of alloy aluminum liquid composition.Its each constituent content is made to control as follows: silicon is 0.45wt%, and magnesium is 0.48wt%, and iron is 0.20wt%, and copper is 0.05wt%, and yttrium is 0.15wt%.
Subsequently the aluminium liquid in holding furnace is released, flow through chute, by ceramic filter plate filtration unit, in chute, automatically add Al-Ti-B silk, for crystal grain thinning according to the flow of aluminium liquid.
Aluminium liquid enters aluminium alloy continuous caster by casting ladle and casts, and aluminium liquid pouring temperature controls at 705 DEG C.By controlling the flow meter pressure of liquid filling machine water coolant, guarantee from casting machine out time strand temperature control at 490 DEG C.
Strand from casting machine out after, after alignment out, enter on-line heating device, make strand temperature enter milling train time control built in 530 DEG C.Described on-line heating device is intermediate frequency annealing furnace.
Strand to requiring after in temperature range through heating devices heat, enters aluminum alloy rolling unit and is rolled, controlled cooling model emulsion temperature and flow, and the aluminium alloy rod temperature after its rolling is completed controls at 375 DEG C.The middle strength aluminum alloy shank diameter that aluminium alloy continuous mill rolls into is 9.5mm.
From milling train out after aluminium bar enter press quenching device at once, quench water temperature control is at 30 DEG C.The temperature of the aluminium alloy rod after quenching controls at 55 DEG C.Aluminium bar after quenching carries out drum packaging.
Wire drawing is carried out to the aluminium alloy rod after quench treatment, is drawn into the aluminium alloy single line of required diameter.Wire-drawing equipment is conventional sliding type aluminum alloy drawing wire machine, and per pass deformation rate controls 1.25.Drawing speed is at 10 meter per seconds, and during wire drawing, lubricating oil controls below 40 DEG C.
Aluminium alloy single line good for wire drawing is carried out artificial aging process, and temperature controls at 180 DEG C, and time controling was at 5.5 hours.The room temps scope control of aging oven is within ± 3 DEG C.Can obtain elongation after ageing treatment is complete and be not less than 3.5%, electric conductivity is not less than 58.5%IACS, and tensile strength is not less than the middle strength aluminium alloy line single line of 245 MPa.
Claims (6)
1. a strength aluminium alloy line in aerial condutor use, is characterized in that: its technical process concrete steps are as follows:
(1) melting and alloying constituent adjustment: enter in holding furnace after aluminium ingot fusing, control temperature of aluminum liquid at 720 ~ 740 DEG C, add aluminium-silicon ingots, magnalium master alloy, aluminum bronze intermediate alloy and aluminium yttrium master alloy; Obtain alloy aluminum liquid after stirring, make its each constituent content control as follows: silicon is 0.40 ~ 0.50wt%, and magnesium is 0.45 ~ 0.50wt%, and iron is 0.18 ~ 0.23wt%, and copper is 0.04 ~ 0.08wt%, and yttrium is 0.1 ~ 0.2wt%; Other impurity contents are all not more than 0.03wt%;
(2) cast: the molten aluminium alloy in holding furnace is flowed through chute, by ceramic filter plate filtration unit, adds Al-Ti-B silk online, crystal grain thinning; Aluminum alloy melt enters aluminium alloy continuous caster and casts, and aluminium liquid pouring temperature controls at 695 DEG C ~ 705 DEG C; From casting machine out time strand temperature control at 480 DEG C ~ 490 DEG C;
(3) on-line heating: by on-line heating device, makes strand temperature control at 520 DEG C ~ 530 DEG C entering milling train;
(4) rolling: roll into middle strength aluminium alloy bar by aluminium alloy continuous mill, the middle strength aluminium alloy bar temperature after rolling completes controls at 365 DEG C ~ 375 DEG C;
(5) press quenching: the middle strength aluminium alloy bar after rolling completes carries out press quenching subsequently, quench water temperature control is at 28 DEG C ~ 30 DEG C, and the temperature of the middle strength aluminium alloy bar after quenching controls at 45 DEG C ~ 55 DEG C;
(6) wire drawing: wire drawing is carried out to strength aluminium alloy bar in after quench treatment, is drawn into the aluminium alloy single line of required diameter;
(7) artificial aging process: centering strength aluminium alloy bar single line carries out artificial aging process, temperature controls at 180 DEG C ~ 200 DEG C, and time controling, at 5 ~ 6 hours, namely obtains finished product single line after taking-up.
2. a kind of aerial condutor according to claim 1 with in strength aluminium alloy line, it is characterized in that: described middle strength aluminium alloy bar becomes diameter to be the middle strength aluminum alloy bar of 9.5mm.
3. strength aluminium alloy line in a kind of aerial condutor use according to claim 1, is characterized in that: the component requirements of described aluminium ingot is as follows: silicon≤0.07wt%, iron≤0.23wt%, magnesium≤0.02wt%, manganese+titanium+chromium+vanadium≤0.02wt%.
4. strength aluminium alloy line in a kind of aerial condutor use according to claim 1, is characterized in that: other described impurity elements are manganese, titanium, chromium, vanadium.
5. strength aluminium alloy line in a kind of aerial condutor use according to claim 1, it is characterized in that: in described aluminium silicon master alloy, silicone content is 20wt%, in magnalium master alloy, Mg content is 50wt%, and in aluminum bronze intermediate alloy, copper content is 10wt%, and in aluminium yttrium master alloy, yttrium content is 10wt%.
6. strength aluminium alloy line in a kind of aerial condutor use according to claim 1, is characterized in that: described technical process concrete steps are as follows:
Aluminium ingot is melted at smelting furnace, flows into holding furnace subsequently and be incubated; Aluminium silicon, magnalium, aluminum bronze and the aluminium yttrium master alloy amount needed for composition is added according to the aluminium liquid measure in insulation; Control temperature of aluminum liquid at 730 DEG C; Carry out the process that stirs subsequently, with refining agent, refining is carried out to aluminium liquid, adopt solid insulating covering agent to cover aluminium liquid surface simultaneously, and leave standstill and be not less than 45 minutes, the aluminum refining agent of described refining agent for market is sold;
After aluminium liquid has left standstill, adopt high speed direct-reading capacitance meter to detect the principal element in aluminium liquid, and according to detected result, carry out corresponding alloying constituent adjustment, meet the requirements of alloy aluminum liquid composition;
Subsequently the aluminium liquid in holding furnace is released, flow through chute, by ceramic filter plate filtration unit, in chute, automatically add Al-Ti-B silk, for crystal grain thinning according to the flow of aluminium liquid;
Aluminium liquid enters aluminium alloy continuous caster by casting ladle and casts, and aluminium liquid pouring temperature controls at 700 DEG C; By controlling the flow meter pressure of liquid filling machine water coolant, guarantee from casting machine out time strand temperature control at 480 DEG C;
Strand from casting machine out after, after alignment out, enter on-line heating device, make strand temperature enter milling train time control built in 520 DEG C; Described on-line heating device is intermediate frequency annealing furnace;
Strand to requiring after in temperature range through heating devices heat, enters aluminum alloy rolling unit and is rolled, controlled cooling model emulsion temperature and flow, and the aluminium alloy rod temperature after its rolling is completed controls at 370 DEG C; The middle strength aluminum alloy shank diameter that aluminium alloy continuous mill rolls into is 9.5mm;
From milling train out after aluminium bar enter press quenching device at once, quench water temperature control is at 29 DEG C; The temperature of the aluminium alloy rod after quenching controls at 50 DEG C; Aluminium bar after quenching carries out drum packaging;
Wire drawing is carried out to the aluminium alloy rod after quench treatment, is drawn into the aluminium alloy single line of required diameter; Wire-drawing equipment is conventional sliding type aluminum alloy drawing wire machine, and per pass deformation rate controls 1.25; Drawing speed is at 10 meter per seconds, and during wire drawing, lubricating oil controls below 40 DEG C;
Aluminium alloy single line good for wire drawing is carried out artificial aging process, and temperature controls at 190 DEG C, and time controling was at 5 hours; The room temps scope control of aging oven is within ± 3 DEG C; Namely middle strength aluminium alloy single line is obtained after ageing treatment is complete.
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| CN103451498B (en) * | 2013-09-06 | 2015-06-10 | 国家电网公司 | Intermediate strength aluminum alloy wire for overhead conductor |
| CN104715803B (en) * | 2013-12-17 | 2017-01-04 | 通用（天津）铝合金产品有限公司 | A kind of manufacture method of aluminium alloy filament |
| CN103924131B (en) * | 2014-04-28 | 2015-07-08 | 大明电缆有限公司 | Rubber jacketed flexible cable aluminum alloy conductor material and manufacturing method thereof |
| CN103952605B (en) * | 2014-04-30 | 2016-05-25 | 国家电网公司 | A kind of preparation method of middle strength aluminium alloy monofilament |
| CN104028961B (en) * | 2014-06-11 | 2017-12-22 | 远东电缆有限公司 | A kind of middle strength aluminium alloy line and its production technology |
| CN104805334A (en) * | 2015-05-13 | 2015-07-29 | 江苏亨通电力特种导线有限公司 | Moderate-intensity high-conductivity aluminium alloy material |
| CN104975211B (en) * | 2015-07-30 | 2018-01-19 | 全球能源互联网研究院 | Strength aluminum alloy conductive monofilament in a kind of high conductivity heat treatment type |
| CN105441736B (en) * | 2015-11-17 | 2017-08-01 | 国网河南省电力公司周口供电公司 | A kind of super-pressure specific complex aluminium alloy conductor |
| CN106011507A (en) * | 2016-04-12 | 2016-10-12 | 江苏大学 | Al-Mg-Si-Y rare earth aluminum alloy and preparation method thereof |
| CN106623478B (en) * | 2016-12-12 | 2018-08-31 | 远东电缆有限公司 | A kind of manufacturing method of highly conductive high-strength aluminum alloy conducting wire used for intelligent electric network |
| CN108754248B (en) * | 2018-04-26 | 2020-09-11 | 广东省工业分析检测中心 | Aluminum alloy conductor for overhead stranded wire and manufacturing method thereof |
| CN110373575A (en) * | 2019-08-07 | 2019-10-25 | 安庆市泽烨新材料技术推广服务有限公司 | A kind of cable aluminium alloy and preparation method thereof |
| CN115572870A (en) * | 2022-10-25 | 2023-01-06 | 祁阳宏泰铝业有限公司 | Enhanced 606X-series aluminum alloy, preparation method thereof and section processing method |
| CN116555643B (en) * | 2023-04-24 | 2023-12-12 | 长江师范学院 | Aluminum-magnesium intermediate alloy and preparation method thereof |
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