CN104046866B - A kind of preparation method of high connductivity high strength rare earth aluminium alloy transport material - Google Patents
A kind of preparation method of high connductivity high strength rare earth aluminium alloy transport material Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of high connductivity high strength rare earth aluminium alloy transport material, is this aluminum alloy materials elementary composition by following weight percent: Cu 4.2-5.5, Zn 2.4-3.6, Be 0.5-0.8, Ta 0.15-0.25, Cr 0.2-0.4, Nb 0.4-0.6, Mn 0.7-1.4, Mg 1.8-2.6, Zr 0.1-0.2, Sc 0.08-0.12, Nd 0.05-0.1, Er 0.04-0.06, surplus is Al.The aluminum alloy materials that the present invention obtains has excellent conductivity and higher tensile strength, tensile strength >=620MPa, electric conductivity >=95%IACS, has the advantages such as high-fidelity performance, corrosion-resistant, processing characteristics is excellent, the life-span is long simultaneously, can be widely used in making electronic industry transport material.
Description
Technical field
The present invention relates to a kind of preparation method of high connductivity high strength rare earth aluminium alloy transport material, belong to aluminum alloy materials processing technique field.
Background technology
Al and Alalloy has the advantages such as excellent electroconductibility, intensity are high, lightweight, be widely used in electronic industry transport material, along with the development of electronic industry and electronic signal transmission think the development of high frequency and high-speed digitization, can not meet the demands to the conductivity of aluminium alloy transport material, signal is caused damage, even form serious or complete distortion, simultaneously also more and more higher to the requirement of rare earth aluminium alloy transport material physical strength.Therefore, a kind of high connductivity high strength rare earth aluminium alloy transport material is developed too impatient to wait.
Summary of the invention
In order to solve the deficiencies in the prior art, the object of the present invention is to provide a kind of preparation method of high connductivity high strength rare earth aluminium alloy transport material, this aluminum alloy materials has excellent high-fidelity performance, electric property and mechanical property.
For achieving the above object, the technical solution used in the present invention is as follows:
A preparation method for high connductivity high strength rare earth aluminium alloy transport material, comprises the following steps:
(1) by Al-6.5wt%Cu-0.4wt%Cr-0.8wt%Be-0.3wt%Ta alloying constituent batching, then load weighted fine aluminium is added in smelting furnace, be heated to 725-745 DEG C, treat fine aluminium melting down more than 80%, temperature adjustment, to 720-740 DEG C, adds alloying constituent successively by Cu, Be, Cr, Ta, stirs, refining, skim, leave standstill, cast of coming out of the stove, teeming temperature is 700-720 DEG C, obtains Al-Cu-Cr-Be-Ta alloy;
(2) 2-3:1 gets fine aluminium and aluminium scrap adds heat fused in smelting furnace as base-material in mass ratio, when temperature reaches 730-750 DEG C, add the Al-Cu-Cr-Be-Ta alloy that step (1) is obtained, after its all fusing, temperature adjustment is to 750-770 DEG C, add Zn, Mg, Cr, Mn, Nb, the alloying constituents such as Zr, after fusing, temperature adjustment is to 735-755 DEG C, add the refining agent refining 15-20min of liquation weight 1.5-2.5%, after skimming, temperature adjustment is to 740-760 DEG C, add norium, 10-15min is stirred after fusing, sampling analysis, adjusting component, the weight percent of each elemental composition in aluminium alloy is met the following requirements: Cu4.2-5.5, Zn2.4-3.6, Be0.5-0.8, Ta0.15-0.25, Cr0.2-0.4, Nb0.4-0.6, Mn0.7-1.4, Mg1.8-2.6, Zr0.1-0.2, Sc0.08-0.12, Nd0.05-0.1, Er0.04-0.06, surplus is Al, leave standstill cast of coming out of the stove after 15-20min, teeming temperature is 715-725 DEG C, then makes required aluminum alloy materials by casting and rolling process,
(3) above-mentioned obtained aluminum alloy materials is heat-treated: be first warming up to 520-540 DEG C with 250-300 DEG C/h, insulation 0.5-1h, then high wind is air-cooled to 200-250 DEG C, insulation 2-3h, 450-480 DEG C is warming up to again with 100-150 DEG C/h, insulation 1-2h, then 240-280 DEG C is cooled to 80-120 DEG C/h, insulation 2-3h, be placed in 0-5 DEG C of frozen water again and be cooled to less than 50 DEG C, then take out and be warming up to 80-90 DEG C with 40-50 DEG C/h, insulation 15-20h, 110-130 DEG C is warming up to 50-60 DEG C/h after air cooling to room temperature, insulation 10-15h, 180-200 DEG C is warming up to again with 20-40 DEG C/h, insulation 5-10h, 65-75 DEG C is cooled to again with 60-80 DEG C/h, insulation 18-24h, air cooling is to room temperature.
The preparation method of described refining agent is as follows: a, get the raw material of following weight part: sodium-chlor 40-50, Repone K 25-35, rhombspar 10-15, agalmatolite 8-12, brucite 10-15, diatomite 5-10, Sodium sulfate anhydrous.min(99) 4-8, soda ash 3-6, cryolite powder 7-11, carnallitite powder 6-9, refractory brick bits 4-8; B, get rhombspar, agalmatolite, brucite, diatomite mixes, 1180-1240 DEG C of calcining 2-3h, shrend, pulverizes, and 80-100 mesh sieve is crossed in grinding, stand-by; B, sodium-chlor and Repone K to be mixed, be heated to 805-825 DEG C, after its whole melting, add the powder that step a is obtained, stir 3-5min, be ground into Powdered after leaving standstill condensation again, mix with remaining raw material, grinding, cross 100-150 mesh sieve.
Beneficial effect of the present invention:
The rare earth elements such as Sc, Nd, Er are added in aluminium alloy of the present invention, not only can crystalline structure in refining aluminum alloy, lower surfaceness, greatly improve electric conductivity and data transmission fidelity performance, the effect of dispersion-strengthened can also be played, impel compound strengthening phase even dispersion, improve and refined cast structure, put forward heavy alloyed physical strength.The aluminum alloy materials that the present invention obtains has excellent conductivity and higher tensile strength, tensile strength >=620MPa, electric conductivity >=95%IACS, there is the advantages such as high-fidelity performance, corrosion-resistant, processing characteristics is excellent, the life-span is long simultaneously, making electronic industry transport material can be widely used in.
Embodiment
A preparation method for high connductivity high strength rare earth aluminium alloy transport material, comprises the following steps:
(1) by Al-6.5wt%Cu-0.4wt%Cr-0.8wt%Be-0.3wt%Ta alloying constituent batching, then load weighted fine aluminium is added in smelting furnace, be heated to 735 DEG C, treat fine aluminium melting down more than 80%, temperature adjustment to 725 DEG C, adds alloying constituent successively by Cu, Be, Cr, Ta, stirs, refining, skim, leave standstill, cast of coming out of the stove, teeming temperature is 710 DEG C, obtains Al-Cu-Cr-Be-Ta alloy;
(2) 2:1 gets fine aluminium and aluminium scrap adds heat fused in smelting furnace as base-material in mass ratio, when temperature reaches 740 DEG C, add the Al-Cu-Cr-Be-Ta alloy that step (1) is obtained, after its all fusing, temperature adjustment to 760 DEG C, add Zn, Mg, Cr, Mn, Nb, the alloying constituents such as Zr, temperature adjustment to 745 DEG C after fusing, add the refining agent refining 20min of liquation weight 2%, temperature adjustment to 750 DEG C after skimming, add norium, 10min is stirred after fusing, sampling analysis, adjusting component, the weight percent of each elemental composition in aluminium alloy is met the following requirements: Cu4.2-5.5, Zn2.4-3.6, Be0.5-0.8, Ta0.15-0.25, Cr0.2-0.4, Nb0.4-0.6, Mn0.7-1.4, Mg1.8-2.6, Zr0.1-0.2, Sc0.08-0.12, Nd0.05-0.1, Er0.04-0.06, surplus is Al, leave standstill cast of coming out of the stove after 20min, teeming temperature is 720 DEG C, then makes required aluminum alloy materials by casting and rolling process,
(3) above-mentioned obtained aluminum alloy materials is heat-treated: be first warming up to 530 DEG C with 250 DEG C/h, insulation 0.5h, then high wind is air-cooled to 200 DEG C, insulation 2h, 480 DEG C are warming up to again with 150 DEG C/h, insulation 1h, then 260 DEG C are cooled to 100 DEG C/h, insulation 2h, be placed in 2 DEG C of frozen water again and be cooled to less than 50 DEG C, then take out and be warming up to 90 DEG C with 50 DEG C/h, insulation 15h, 120 DEG C are warming up to 60 DEG C/h after air cooling to room temperature, insulation 10h, 200 DEG C are warming up to again with 30 DEG C/h, insulation 5h, 65 DEG C are cooled to again with 70 DEG C/h, insulation 22h, air cooling is to room temperature.
The preparation method of described refining agent is as follows: a, get the raw material of following weight part: sodium-chlor 50, Repone K 25, rhombspar 10, agalmatolite 12, brucite 10, diatomite 10, Sodium sulfate anhydrous.min(99) 6, soda ash 4, cryolite powder 8, carnallitite powder 7, refractory brick bits 6; B, get rhombspar, agalmatolite, brucite, diatomite mixes, 1240 DEG C of calcining 2h, shrend, pulverizes, and 100 mesh sieves are crossed in grinding, stand-by; B, sodium-chlor and Repone K to be mixed, be heated to 815 DEG C, after its whole melting, add the powder that step a is obtained, stir 3min, be ground into Powdered after leaving standstill condensation again, mix with remaining raw material, grinding, cross 150 mesh sieves.
The salient features of obtained aluminum alloy materials is as shown in the table:
| Project | As a result 2--> |
| Tensile strength | 642MPa |
| Unit elongation | 12.4％ |
| Electroconductibility | 97％IACS |
Claims (2)
1. a preparation method for high connductivity high strength rare earth aluminium alloy transport material, is characterized in that comprising the following steps:
(1) by Al-6.5wt%Cu-0.4wt%Cr-0.8wt%Be-0.3wt%Ta alloying constituent batching, then load weighted fine aluminium is added in smelting furnace, be heated to 725-745 DEG C, treat fine aluminium melting down more than 80%, temperature adjustment, to 720-740 DEG C, adds alloying constituent successively by Cu, Be, Cr, Ta, stirs, refining, skim, leave standstill, cast of coming out of the stove, teeming temperature is 700-720 DEG C, obtains Al-Cu-Cr-Be-Ta alloy;
(2) 2-3:1 gets fine aluminium and aluminium scrap adds heat fused in smelting furnace as base-material in mass ratio, when temperature reaches 730-750 DEG C, add the Al-Cu-Cr-Be-Ta alloy that step (1) is obtained, after its all fusing, temperature adjustment is to 750-770 DEG C, add Zn, Mg, Cr, Mn, Nb, Zr alloying constituent, after fusing, temperature adjustment is to 735-755 DEG C, add the refining agent refining 15-20min of liquation weight 1.5-2.5%, after skimming, temperature adjustment is to 740-760 DEG C, add norium, 10-15min is stirred after fusing, sampling analysis, adjusting component, the weight percent of each elemental composition in aluminium alloy is met the following requirements: Cu4.2-5.5, Zn2.4-3.6, Be0.5-0.8, Ta0.15-0.25, Cr0.2-0.4, Nb0.4-0.6, Mn0.7-1.4, Mg1.8-2.6, Zr0.1-0.2, Sc0.08-0.12, Nd0.05-0.1, Er0.04-0.06, surplus is Al, leave standstill cast of coming out of the stove after 15-20min, teeming temperature is 715-725 DEG C, then makes required aluminum alloy materials by casting and rolling process,
(3) above-mentioned obtained aluminum alloy materials is heat-treated: be first warming up to 520-540 DEG C with 250-300 DEG C/h, insulation 0.5-1h, then high wind is air-cooled to 200-250 DEG C, insulation 2-3h, 450-480 DEG C is warming up to again with 100-150 DEG C/h, insulation 1-2h, then 240-280 DEG C is cooled to 80-120 DEG C/h, insulation 2-3h, be placed in 0-5 DEG C of frozen water again and be cooled to less than 50 DEG C, then take out and be warming up to 80-90 DEG C with 40-50 DEG C/h, insulation 15-20h, 110-130 DEG C is warming up to 50-60 DEG C/h after air cooling to room temperature, insulation 10-15h, 180-200 DEG C is warming up to again with 20-40 DEG C/h, insulation 5-10h, 65-75 DEG C is cooled to again with 60-80 DEG C/h, insulation 18-24h, air cooling is to room temperature.
2. the preparation method of a kind of high connductivity high strength rare earth aluminium alloy transport material according to claim 1, it is characterized in that, the preparation method of described refining agent is as follows: a, get the raw material of following weight part: sodium-chlor 40-50, Repone K 25-35, rhombspar 10-15, agalmatolite 8-12, brucite 10-15, diatomite 5-10, Sodium sulfate anhydrous.min(99) 4-8, soda ash 3-6, cryolite powder 7-11, carnallitite powder 6-9, refractory brick bits 4-8; B, get rhombspar, agalmatolite, brucite, diatomite mixes, 1180-1240 DEG C of calcining 2-3h, shrend, pulverizes, and 80-100 mesh sieve is crossed in grinding, stand-by; B, sodium-chlor and Repone K to be mixed, be heated to 805-825 DEG C, after its whole melting, add the powder that step a is obtained, stir 3-5min, be ground into Powdered after leaving standstill condensation again, mix with remaining raw material, grinding, cross 100-150 mesh sieve.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004111282A1 (en) * | 2003-06-06 | 2004-12-23 | Corus Aluminium Walzprodukte Gmbh | High-damage tolerant aluminium alloy product in particular for aerospace applications |
| JP2010159488A (en) * | 2008-12-09 | 2010-07-22 | Sumitomo Light Metal Ind Ltd | Method for molding 2,000 series aluminum alloy material, and formed product molded by the same |
| CN102268575A (en) * | 2011-07-20 | 2011-12-07 | 安徽欣意电缆有限公司 | Aluminum alloy material and preparation method thereof |
| CN103484731A (en) * | 2013-08-12 | 2014-01-01 | 安徽环宇铝业有限公司 | Aluminum alloy for automobile wheel hubs and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004111282A1 (en) * | 2003-06-06 | 2004-12-23 | Corus Aluminium Walzprodukte Gmbh | High-damage tolerant aluminium alloy product in particular for aerospace applications |
| JP2010159488A (en) * | 2008-12-09 | 2010-07-22 | Sumitomo Light Metal Ind Ltd | Method for molding 2,000 series aluminum alloy material, and formed product molded by the same |
| CN102268575A (en) * | 2011-07-20 | 2011-12-07 | 安徽欣意电缆有限公司 | Aluminum alloy material and preparation method thereof |
| CN103484731A (en) * | 2013-08-12 | 2014-01-01 | 安徽环宇铝业有限公司 | Aluminum alloy for automobile wheel hubs and preparation method thereof |
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