CN1081245C - Preparation of boronic aluminium alloy with high conductivity - Google Patents
Preparation of boronic aluminium alloy with high conductivity Download PDFInfo
- Publication number
- CN1081245C CN1081245C CN99104364A CN99104364A CN1081245C CN 1081245 C CN1081245 C CN 1081245C CN 99104364 A CN99104364 A CN 99104364A CN 99104364 A CN99104364 A CN 99104364A CN 1081245 C CN1081245 C CN 1081245C
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- Prior art keywords
- aluminium
- boron
- high conductivity
- temperature
- present
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 62
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000004411 aluminium Substances 0.000 claims abstract description 56
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052796 boron Inorganic materials 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 12
- 239000004020 conductor Substances 0.000 abstract description 9
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000011261 inert gas Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000007872 degassing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- -1 Si≤0.08% wherein Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- FGUJWQZQKHUJMW-UHFFFAOYSA-N [AlH3].[B] Chemical compound [AlH3].[B] FGUJWQZQKHUJMW-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Conductive Materials (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The present invention relates to a manufacturing technology of high-conductivity aluminium alloy containing boron, which is suitable for the manufacturing process of aluminium bars in the field of electric wires and electric cables. The present invention adds 0.05% to 0.13% of boron to 99.5% to 99.7% of industrial pure aluminium for making bars and then carries out annealing or self annealing of (200 to 320 DEG C)*(1.5 to 3h), and moreover, the present invention is matched with the purification treatment of aluminium liquid by inert gas and the filtering technology of foam ceramics so as to cause the specific resistance of an aluminium conductor to reach (2.72 to 2.74)*10<-8>omega m, the strength of the aluminium conductor is maintained to be equivalent to the strength level of industrial pure aluminium, and the plasticity of the aluminium conductor is 10 to 20% higher than that of industrial pure aluminium. The strength is matched with the plasticity well so as to cause the alloy to have good comprehensive mechanical property.
Description
The invention belongs to the manufacture method of conductive aluminum in the metal material field, be specially adapted to the manufacturing processed of aluminium bar in the electric wire field.
In the research and manufacturing processed of conductive aluminum, reduce the resistivity of aluminium, improve its electroconductibility, be the target that people constantly pursue always.At present, the electric conductivity standard of the commercial-purity aluminium of Gong Rening is 61%IACS in the world, and the electric conductivity of regulation aluminium only is 59.45% in China's standard.In the various factors that influence aluminium electroconductibility, chemical ingredients is one of important factor.Electroconductibility with the method raising aluminium that adds alloying element has two kinds of approach at present, the one, in aluminium, add rare earth, the research of this respect has obtained certain progress, but also exist many contradiction, as " rare earth is to the influence of aluminium conductor electroconductibility " paper that " China YouSe Acta Metallurgica Sinica " the 1st phase in 1992 delivers, think that rare earth does not reduce the effect of the resistivity of aluminium.From the feedback information that aluminium bar manufacturers such as Guizhou Aluminum Factory, Jilin huge rock aluminium manufacturer receive, therefore the result of use instability holds a negating attitude to the effect of rare earth.The 2nd, in aluminium, add boron, normally in aluminium, add≤0.05% boron at present, it is called as boronation and handles as a kind of industrial removal of impurities means, is employed.As the conductive aluminum 1350E of the U.S., be exactly in 99.5% aluminium, to add≤0.05% boron, its electric conductivity reaches 62%IACS.In the article of " handle improve the electrical aluminum rod electric conductivity with the aluminium liquid boronation " delivered in " electric wire " second phase in 1984, Shengyang Electrical Cable Factory and Shanghai Electrical Cable Research Institute cooperation have been introduced, with the method that adds potassium fluoborate multiple import, homemade aluminium are carried out the result of study that boronation is handled, the electric conductivity that various aluminium can reach after boronation is handled is all between 61%～62%IACS.
The method that the objective of the invention is to invent a kind of process stabilizing, can produce the higher aluminium conductor of electric conductivity to improve the power transmission efficiency of transmitting line, reduces meaningless energy consumption in the transmission of electricity process.
Technical scheme of the present invention is by self-annealing or annealing process after adding 0.05%～0.13% boron and making bar, and cooperates purification, the filter process of aluminium liquid, improves the electroconductibility of aluminium.
Specific embodiment of the present invention is as follows:
Implementation condition is an aluminium bar continuous casting and tandem rolling production line, in the middle part of the chute of preceding case, be provided with purifying treatment groove and filter vat at smelting furnace or maintenance stove, the filter vat size should be complementary with rolling mill speed, and the purification tank size is design in 8～15 minutes by aluminium liquid treatment time in groove.Be provided with insulation kiln or stay-warm case in milling train closing quotation place.
(1) original aluminum liquid composition requires: purity is 99.5%～99.7% aluminium, Si≤0.08% wherein, and Fe≤0.20%, (Cr+Ti+V)≤0.03%.
(2) aluminium liquid carries out rough purification and handles in holding furnace, and makes temperature be controlled at 750～800 ℃, adds the Al-B master alloy, makes to add the boron amount and account for 0.05%～0.13% of aluminium liquid.
(3) stir 2～5min after adding the Al-B master alloy, static 5～20min comes out of the stove.
When (4) aluminium liquid is flowed through the purifying treatment groove, it is carried out purification handle.Purifying treatment adopts double-deck paddle---and argon bottom-blowing refining plant, argon flow amount are 15～20L/min, and the paddle rotating speed is 450～700r/min.
(5) aluminium liquid flows into filter vat after degassing and purifying, and the aluminum oxide foam ceramic filter plate that 20 thick～30PPI of 50mm (PPI is meant the hole count that is had on the per inch length) is housed in the filter vat filters.
(6) case entered continuous caster before the aluminium liquid after the filtration treatment flowed into.
(7) controlled chilling intensity makes aluminium bar closing quotation temperature at 200～320 ℃, directly enters in the stay-warm case that is incubated kiln or insulating lining is housed after the closing quotation of aluminium bar and is incubated 1.5～3h, carries out self-annealing; Or the 1.5～3h that in heat treatment furnace, under 280 ℃～300 ℃ conditions, anneals.
Below provide optimum implementation of the present invention:
Described in specification sheets: in holding furnace to 99.7% fine aluminium, adjust temperature, make it remain on 750～800 ℃, add aluminium boron master alloy, make aluminium liquid boron-containing quantity in 0.05%～0.09% scope, stirred 2～5 fens, and static 10～20 minutes, came out of the stove, aluminium liquid flow to purification tank, use double-deck paddle---the degasification of argon bottom-blowing refining plant, argon flow amount 15～20L/min, 20PPI foam ceramic filter.700 ± 10 ℃ of teeming temperatures, 450～480 ℃ of breaking down temperature, strand speed 2.3～2.7m/min, 260～300 ℃ of closing quotation temperature, closing quotation back aluminium bar directly enters the continous way insulation kiln that the bottom is covered with track, and insulation 2h carries out self-annealing.The aluminium bar resistivity of producing can reach (2.72～2.74) * 10
-8Ω m, σ
b=100～108MPa, δ=14～20%.
Effect of the present invention is that the resistivity that makes aluminium conductor is reduced to (2.72～2.74) * 10
-8Ω m, the level of rafifinal near 99.99%, and intensity has kept the strength level of commercial-purity aluminium; The plasticity ratio commercial-purity aluminium exceeds 10～20%.Use this aluminium conductor in transmitting line, its economic benefit is mainly reflected in and reduces a large amount of electric energy losses that electrical network causes because of resistivity is too high.According to statistics, at a 100KM, on the ultra-high-tension power transmission line of 50KV, the every reduction by 1% of resistivity, the electric energy that can save every year is 45.2 ten thousand degree.The aluminium conductor replacement resistivity of producing with the technology of the present invention is international standard value 2.8264 * 10
-8The aluminium conductor of Ω m, resistivity have reduced (2～3) %, and in above-mentioned such circuit, the electric energy that can save every year is (90～135) ten thousand degree.
Claims (2)
1. the manufacture method of a high conductivity boracic aluminium alloy, it is characterized in that: be to add boron in the melting process of commercial-purity aluminium, it adds the boron amount is 0.05%～0.13%; The molten aluminium that adds behind the boron must be through purifying and filtering, be provided with double-deck paddle argon bottom-blowing refining plant in its purification tank, argon flow amount is 15～20L/min, and the paddle rotating speed is 450～700r/min, and the thick 20～30PPI aluminum oxide foam ceramic filter plate of 50mm is installed in the filter vat; Molten aluminium is made the aluminium bar through continuous casting and rolling, and the closing quotation temperature of aluminium bar is 200～320 ℃, and is incubated 1～3h under this temperature.
2. the manufacture method of the described a kind of high conductivity boracic aluminium alloy of claim 1, its feature also is: in the continuous casting and rolling process, the closing quotation temperature of control aluminium bar is 200～320 ℃, directly puts into the insulation kiln after the closing quotation of aluminium bar or stay-warm case is incubated 1.5～3h, carries out self-annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99104364A CN1081245C (en) | 1999-04-15 | 1999-04-15 | Preparation of boronic aluminium alloy with high conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99104364A CN1081245C (en) | 1999-04-15 | 1999-04-15 | Preparation of boronic aluminium alloy with high conductivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271024A CN1271024A (en) | 2000-10-25 |
| CN1081245C true CN1081245C (en) | 2002-03-20 |
Family
ID=5271657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99104364A Expired - Fee Related CN1081245C (en) | 1999-04-15 | 1999-04-15 | Preparation of boronic aluminium alloy with high conductivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081245C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011035A (en) * | 2010-12-04 | 2011-04-13 | 江苏南瑞淮胜电缆有限公司 | Heat-resistant all aluminum alloy conductor and manufacturing method thereof |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300356C (en) * | 2004-12-03 | 2007-02-14 | 云南冶金集团总公司 | High conductivity aluminium base material containing rare-earth and boron and preparing method |
| CN101345098B (en) * | 2008-08-22 | 2010-12-08 | 远东电缆有限公司 | Aluminum conductor for overhead conductor |
| CN101419849B (en) * | 2008-10-21 | 2011-03-09 | 无锡华能电缆有限公司 | High conductivity flexible aluminum wire and manufacturing method thereof |
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
| CN102146539A (en) * | 2011-03-18 | 2011-08-10 | 常州鸿泽澜线缆有限公司 | Aluminum alloy conductor used for high-voltage cable and preparation method thereof |
| CN102682872B (en) * | 2011-03-18 | 2014-03-26 | 上海电缆研究所 | Semihard aluminum wire, overhead wire and preparation method thereof |
| CN102554192B (en) * | 2012-01-11 | 2013-10-23 | 沈阳铸造研究所 | Manufacturing method of highly-conductive and heat-resisting electrode cross beam component |
| CN102744256A (en) * | 2012-06-25 | 2012-10-24 | 江苏南瑞淮胜电缆有限公司 | Continuous casting and rolling production method for high-conductivity aluminium rod |
| CN103667788B (en) * | 2012-09-14 | 2016-12-21 | 北京工业大学 | A kind of titanium alloy and Technology for Heating Processing |
| CN103215477B (en) * | 2013-05-07 | 2015-07-08 | 山东大学 | Preparation method of calcium-hexaboride-reinforced aluminum matrix composite |
| CN104779718A (en) * | 2015-04-13 | 2015-07-15 | 湖南天能电机制造有限公司 | Super-efficient motor provided with boron aluminum alloy rotor |
| CN105671372B (en) * | 2016-01-25 | 2017-11-28 | 华北电力大学 | A kind of duralumin conductor material of 63%IACS and preparation method thereof |
| CN109468478A (en) * | 2018-12-18 | 2019-03-15 | 云南云铝涌鑫铝业有限公司 | A kind of preparation method of aluminium ingot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922156A (en) * | 1982-07-27 | 1984-02-04 | Koito Mfg Co Ltd | Composite function device |
| DE4308612A1 (en) * | 1993-03-18 | 1994-09-22 | Peak Werkstoff Gmbh | Aluminium-alloy contg. boron and process for mfr. thereof |
-
1999
- 1999-04-15 CN CN99104364A patent/CN1081245C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922156A (en) * | 1982-07-27 | 1984-02-04 | Koito Mfg Co Ltd | Composite function device |
| DE4308612A1 (en) * | 1993-03-18 | 1994-09-22 | Peak Werkstoff Gmbh | Aluminium-alloy contg. boron and process for mfr. thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011035A (en) * | 2010-12-04 | 2011-04-13 | 江苏南瑞淮胜电缆有限公司 | Heat-resistant all aluminum alloy conductor and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1271024A (en) | 2000-10-25 |
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Granted publication date: 20020320 Termination date: 20110415 |