CN109628774A - The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar - Google Patents

The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar Download PDF

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CN109628774A
CN109628774A CN201811623986.2A CN201811623986A CN109628774A CN 109628774 A CN109628774 A CN 109628774A CN 201811623986 A CN201811623986 A CN 201811623986A CN 109628774 A CN109628774 A CN 109628774A
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aluminium
melt
alloy
filtering
aluminium alloy
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CN109628774B (en
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贠亚琼
耿智红
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Henan Meiyade New Material Co.,Ltd.
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Henan New Material Ltd By Share Ltd
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    • 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
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • 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
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • 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
    • C22C21/16—Alloys based on aluminium with copper as the next major constituent with magnesium

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses the middle intensity non-aged aluminum alloy electrician production method of circle aluminium bar, including molten aluminum alloying, aluminium alloy melt homogenization, primary purification, double purification and standing, crystal grain refinement and filtering, purifies and cast three times, rolls.The present invention improves the intensity of the alloy by electrolytic aluminium liquid being added the copper of certain content, magnesium, boron, rare earth element, while also meeting the electric conductivity of the alloy；It is used in production method of the invention and purifies and filter three times three times, the quality of primary aluminum stick is also ensured while improving the degree of purity of melt.

Description

The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar
Technical field
The present invention relates to technical field of aluminum alloy technology, more particularly to the life of middle intensity non-aged aluminum alloy electrician circle aluminium bar Production method.
Background technique
With electric power, the sharp increase of electric appliance demand, requirement of the country to transmission line of electricity trnamission capacity is higher and higher, But current China's transmission line of electricity is still based on aerial steel-cored aluminium strand, since steel-cored aluminium strand heat resistance is poor, and conductive Rate is low, and transmission line of electricity trnamission capacity is extremely restricted.Heat-resisting aluminium alloy electrician's round bar is the important primary material of aluminium alloy conductor, warp Heat-resistant aluminum alloy wire is made after wire drawing process, has good electricity and mechanical property concurrently while with excellent heat resistance energy Energy.Heat-resisting aluminium alloy conductor be used primarily on newly-built high pressure and super-pressure overhead transmission line be used as high-capacity leads, high current ground wire, Heavy-current bus-bars inside large-span conductors and substation, in addition, also using heat-resisting aluminium alloy in old overhead transmission line transformation Conducting wire can not change steel tower height, optionally only not need to change conducting wire under conditions of line corridor, so that it may increase capacity of trunk Add 50% or more, to obtain good techno-economic effect.But bauxite resource siliceous height in China's is unfavorable for electrical aluminum rod production, The unstable product quality generally supplied, and the problem low with yield rate.
Summary of the invention
The object of the invention is that overcoming above-mentioned deficiency, the middle intensity non-aged aluminum alloy electrician life of circle aluminium bar is provided Production method.
In order to achieve the above objectives, the present invention is implemented according to following technical scheme:
The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar, comprising the following steps:
S1, molten aluminum alloying
The electrolytic aluminium liquid that aluminium content is 99.5% or more is added in smelting furnace, temperature controls between 730~760 DEG C；Then to Molten aluminum in smelting furnace adds each element of following mass fraction: copper 0.12~0.14%, magnesium 0.10~0.12%, boron 0.02~ 0.10%, rare earth 0.20~0.30%；Obtain primary aluminium alloy melt；
S2, aluminium alloy melt homogenization
It keeps temperature of smelting furnace at 730~760 DEG C, the primary aluminium alloy melt in smelting furnace is stirred into stirring with electromagnetic mixer Time is 30~40min, guarantees that solution temperature is uniform in smelting furnace and each alloy element component is uniform；Obtain aluminium alloy melt；
S3, primary purification
After the completion of step S2, common refining agent is blown to the aluminium alloy melt in smelting furnace using argon gas, is removed the gred to melt degasification； Refining agent usage amount 1.5kg/t is blown time 10min；
S4, double purification and standing
Step S3 is imported into standing furnace by the aluminium alloy melt of primary purification, using argon gas to the uniform aluminium alloy in standing furnace Melt is blown common refining agent, removes the gred to melt degasification；Refining agent usage amount 2.0kg/t is blown time 15min；Blowing terminates Afterwards, stewing process is carried out to the uniform aluminium alloy melt in standing furnace, time of repose is controlled in 20~40min；
S5, crystal grain refinement and filtering
The aluminium alloy melt of step S4 is subjected to online crystal grain refinement processing, through online degasification and filtering and removing slag after, make its at Divide more uniform；Obtain qualified aluminum alloy melt；
S6 purifies three times and casts
The obtained aluminum alloy melt of step S5 is cast, it is further to melt using birotor depassing unit in casting process Degasification slagging-off；The birotor depassing unit carries out degasification using argon gas；
S7, rolling
The aluminium alloy that step S6 has cast is sent into hot-rolling mill to roll, obtains aluminium bar；
S8, the aluminium bar rolled carry out solution strengthening processing through atomization quenching channel, carry out take-up packaging；After the assay was approved to obtain the final product Finished product justifies aluminium bar.
Preferably, the copper is obtained by addition copper wire；The magnesium that the magnesium elements are 99.9% by addition content Ingot obtains；The boron element is obtained by the aluminum-boron alloy that addition boron content is 3%；The rare earth element is dilute by adding The Al rare earth alloy that native content is 10% obtains.
Preferably, the filter process of the step S5, reaches filter effect by filtering three times.
Preferably, the filtering three times includes the first time filtering crossed using 1 × 1mm of level-one glass cross, using second level Second of filtering of 30ppi ceramic filter is filtered using the third time of the ceramic filter of three-level 50ppi.
Preferably, the revolving speed of rotor is 450r/min, argon gas dosage 20L/min in the step S6.
Action principle of the invention:
The present invention is directly produced using electrolytic aluminium liquid, and intensity is improved by alloy element, and copper, magnesium, boron, four kinds of rare earth is added Member usually improves intensity, while also meeting the electric conductivity of aluminium alloy.
The present invention is for the temperature and the phenomenon that uneven chemical components and hot-spot everywhere of melt in smelting furnace, using electromagnetism Blender is stirred the melt in smelting furnace, to guarantee the uniformity of milligram ammonia alloying component and molten aluminum temperature.
The present invention purifies melt three times, has both improved the clarity of melt, also ensures final circle aluminium bar Quality: purification terminates to lead stokehold to standing furnace in melting for the first time, is blown common refining agent using argon gas and removes the gred to melt degasification, This time melt outgassing rate is up to 10% or so；Second of purification is to be blown common refining using argon gas after melt imports standing furnace Agent is to cleaning molten, and this time melt outgassing rate is up to 23% or so；Third time purification is in casting process using birotor degasification Device removes the gred to the further degasification of melt, and this time outgassing rate is up to 50% or so.
The present invention is filtered aluminum melt using filtering three times in the filter process of step S5, by filtering three times 95% or more the oxide inclusion of 10 μ or more, the oxide inclusion 50% or so of 5 μ or more can be filtered.
Compared with prior art, the invention has the benefit that
The present invention improves the intensity of the alloy by electrolytic aluminium liquid being added the copper of certain content, magnesium, boron, rare earth element, together When also meet the electric conductivity of the alloy；It is used in production method of the invention and purifies and filter three times three times, improved The quality of primary aluminum stick is also ensured while the degree of purity of melt.
Specific embodiment
With specific embodiment, the invention will be further described below, the invention illustrative examples and illustrate to use Explain the present invention, but not as a limitation of the invention.
Embodiment 1
The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar, comprising the following steps:
S1, molten aluminum alloying
The electrolytic aluminium liquid that aluminium content is 99.5% or more is added in smelting furnace, temperature controls between 730 DEG C；Then in smelting furnace Molten aluminum add each element of following mass fraction: copper 0.12%, magnesium 0.10%, boron 0.08%, rare earth 0.20%；Primary aluminium is obtained to close Golden melt；
S2, aluminium alloy melt homogenization
Keep temperature of smelting furnace at 730 DEG C, with electromagnetic mixer to the primary aluminium alloy melt in smelting furnace into stirring, mixing time is 30min guarantees that solution temperature is uniform in smelting furnace and each alloy element component is uniform；Obtain aluminium alloy melt；
S3, primary purification
After the completion of step S2, common refining agent is blown to the aluminium alloy melt in smelting furnace using argon gas, is removed the gred to melt degasification； Refining agent usage amount 1.5kg/t is blown time 10min；
S4, double purification and standing
Step S3 is imported into standing furnace by the aluminium alloy melt of primary purification, using argon gas to the uniform aluminium alloy in standing furnace Melt is blown common refining agent, removes the gred to melt degasification；Refining agent usage amount 2.0kg/t is blown time 15min；Blowing terminates Afterwards, stewing process is carried out to the uniform aluminium alloy melt in standing furnace, time of repose is controlled in 20min；
S5, crystal grain refinement and filtering
The aluminium alloy melt of step S4 is subjected to online crystal grain refinement processing, through online degasification and filtering and removing slag after, make its at Divide more uniform；Online by filtering three times, filtering for the first time is filtered using 1 × 1mm of level-one glass cross, second of filtering makes The ceramic filter of three-level 50ppi is used with second level 30ppi ceramic filter, third time filtering；Obtain qualified aluminum alloy melt；
S6 purifies three times and casts
The obtained aluminum alloy melt of step S5 is cast, it is further to melt using birotor depassing unit in casting process Degasification slagging-off；Birotor depassing unit carries out degasification using argon gas, and the revolving speed of rotor is 450r/min, argon gas dosage 20L/min；
S7, rolling
The aluminium alloy that step S6 has cast is sent into hot-rolling mill to roll, obtains aluminium bar；
S8, the aluminium bar rolled carry out solution strengthening processing through atomization quenching channel, carry out take-up packaging；After the assay was approved to obtain the final product Finished product justifies aluminium bar.
Wherein, copper is obtained by addition copper wire；The magnesium elements are obtained by the magnesium ingot that addition content is 99.9% ?；The boron element is obtained by the aluminum-boron alloy that addition boron content is 3%；The rare earth element passes through addition content of rare earth It is obtained for 10% Al rare earth alloy.
Embodiment 2
The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar, comprising the following steps:
S1, molten aluminum alloying
The electrolytic aluminium liquid that aluminium content is 99.5% or more is added in smelting furnace, temperature controls between 760 DEG C；Then in smelting furnace Molten aluminum add each element of following mass fraction: copper 0.14%, magnesium 0.12%, boron 0.03%, rare earth 0.21%；Primary aluminium is obtained to close Golden melt；
S2, aluminium alloy melt homogenization
Keep temperature of smelting furnace at 760 DEG C, with electromagnetic mixer to the primary aluminium alloy melt in smelting furnace into stirring, mixing time is 40min guarantees that solution temperature is uniform in smelting furnace and each alloy element component is uniform；Obtain aluminium alloy melt；
S3, primary purification
After the completion of step S2, common refining agent is blown to the aluminium alloy melt in smelting furnace using argon gas, is removed the gred to melt degasification； Refining agent usage amount 1.5kg/t is blown time 10min；
S4, double purification and standing
Step S3 is imported into standing furnace by the aluminium alloy melt of primary purification, using argon gas to the uniform aluminium alloy in standing furnace Melt is blown common refining agent, removes the gred to melt degasification；Refining agent usage amount 2.0kg/t is blown time 15min；Blowing terminates Afterwards, stewing process is carried out to the uniform aluminium alloy melt in standing furnace, time of repose is controlled in 40min；
S5, crystal grain refinement and filtering
The aluminium alloy melt of step S4 is subjected to online crystal grain refinement processing, through online degasification and filtering and removing slag after, make its at Divide more uniform；Online by filtering three times, filtering for the first time is filtered using 1 × 1mm of level-one glass cross, second of filtering makes The ceramic filter of three-level 50ppi is used with second level 30ppi ceramic filter, third time filtering；Obtain qualified aluminum alloy melt；
S6 purifies three times and casts
The obtained aluminum alloy melt of step S5 is cast, it is further to melt using birotor depassing unit in casting process Degasification slagging-off；Birotor depassing unit carries out degasification using argon gas, and the revolving speed of rotor is 450r/min, argon gas dosage 20L/min；
S7, rolling
The aluminium alloy that step S6 has cast is sent into hot-rolling mill to roll, obtains aluminium bar；
S8, the aluminium bar rolled carry out solution strengthening processing through atomization quenching channel, carry out take-up packaging；After the assay was approved to obtain the final product Finished product justifies aluminium bar.
Wherein, copper is obtained by addition copper wire；The magnesium elements are obtained by the magnesium ingot that addition content is 99.9% ?；The boron element is obtained by the aluminum-boron alloy that addition boron content is 3%；The rare earth element passes through addition content of rare earth It is obtained for 10% Al rare earth alloy.
Embodiment 3
The production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar, comprising the following steps:
S1, molten aluminum alloying
The electrolytic aluminium liquid that aluminium content is 99.5% or more is added in smelting furnace, temperature controls between 745 DEG C；Then in smelting furnace Molten aluminum add each element of following mass fraction: copper 0.12%, magnesium 0.11%, boron 0.02%, rare earth 0.25%；Primary aluminium is obtained to close Golden melt；
S2, aluminium alloy melt homogenization
It keeps temperature of smelting furnace at 730~760 DEG C, the primary aluminium alloy melt in smelting furnace is stirred into stirring with electromagnetic mixer Time is 35min, guarantees that solution temperature is uniform in smelting furnace and each alloy element component is uniform；Obtain aluminium alloy melt；
S3, primary purification
After the completion of step S2, common refining agent is blown to the aluminium alloy melt in smelting furnace using argon gas, is removed the gred to melt degasification； Refining agent usage amount 1.5kg/t is blown time 10min；
S4, double purification and standing
Step S3 is imported into standing furnace by the aluminium alloy melt of primary purification, using argon gas to the uniform aluminium alloy in standing furnace Melt is blown common refining agent, removes the gred to melt degasification；Refining agent usage amount 2.0kg/t is blown time 15min；Blowing terminates Afterwards, stewing process is carried out to the uniform aluminium alloy melt in standing furnace, time of repose is controlled in 30min；
S5, crystal grain refinement and filtering
The aluminium alloy melt of step S4 is subjected to online crystal grain refinement processing, through online degasification and filtering and removing slag after, make its at Divide more uniform；Online by filtering three times, filtering for the first time is filtered using 1 × 1mm of level-one glass cross, second of filtering makes The ceramic filter of three-level 50ppi is used with second level 30ppi ceramic filter, third time filtering；Obtain qualified aluminum alloy melt；
S6 purifies three times and casts
The obtained aluminum alloy melt of step S5 is cast, it is further to melt using birotor depassing unit in casting process Degasification slagging-off；Birotor depassing unit carries out degasification using argon gas, and the revolving speed of rotor is 450r/min, argon gas dosage 20L/min；
S7, rolling
The aluminium alloy that step S6 has cast is sent into hot-rolling mill to roll, obtains aluminium bar；
S8, the aluminium bar rolled carry out solution strengthening processing through atomization quenching channel, carry out take-up packaging；After the assay was approved to obtain the final product Finished product justifies aluminium bar.
Wherein, copper is obtained by addition copper wire；The magnesium elements are obtained by the magnesium ingot that addition content is 99.9% ?；The boron element is obtained by the aluminum-boron alloy that addition boron content is 3%；The rare earth element passes through addition content of rare earth It is obtained for 10% Al rare earth alloy.
The limitation that technical solution of the present invention is not limited to the above specific embodiments, it is all to do according to the technique and scheme of the present invention Technology deformation out, falls within the scope of protection of the present invention.

Claims (5)

  1. The production method of intensity non-aged aluminum alloy electrician circle aluminium bar in 1., it is characterised in that: the following steps are included:
    S1, molten aluminum alloying
    The electrolytic aluminium liquid that aluminium content is 99.5% or more is added in smelting furnace, temperature controls between 730~760 DEG C；Then to Molten aluminum in smelting furnace adds each element of following mass fraction: copper 0.12~0.14%, magnesium 0.10~0.12%, boron 0.02~ 0.10%, rare earth 0.20~0.30%；Obtain primary aluminium alloy melt；
    S2, aluminium alloy melt homogenization
    It keeps temperature of smelting furnace at 730~760 DEG C, the primary aluminium alloy melt in smelting furnace is stirred into stirring with electromagnetic mixer Time is 30~40min, guarantees that solution temperature is uniform in smelting furnace and each alloy element component is uniform；Obtain aluminium alloy melt；
    S3, primary purification
    After the completion of step S2, common refining agent is blown to the aluminium alloy melt in smelting furnace using argon gas, is removed the gred to melt degasification； Refining agent usage amount 1.5kg/t is blown time 10min；
    S4, double purification and standing
    Step S3 is imported into standing furnace by the aluminium alloy melt of primary purification, using argon gas to the uniform aluminium alloy in standing furnace Melt is blown common refining agent, removes the gred to melt degasification；Refining agent usage amount 2.0kg/t is blown time 15min；Blowing terminates Afterwards, stewing process is carried out to the uniform aluminium alloy melt in standing furnace, time of repose is controlled in 20~40min；
    S5, crystal grain refinement and filtering
    The aluminium alloy melt of step S4 is subjected to online crystal grain refinement processing, through online degasification and filtering and removing slag after, make its at Divide more uniform；Obtain qualified aluminum alloy melt；
    S6 purifies three times and casts
    The obtained aluminum alloy melt of step S5 is cast, it is further to melt using birotor depassing unit in casting process Degasification slagging-off；The birotor depassing unit carries out degasification using argon gas；
    S7, rolling
    The aluminium alloy that step S6 has cast is sent into hot-rolling mill to roll, obtains aluminium bar；
    S8, the aluminium bar rolled carry out solution strengthening processing through atomization quenching channel, carry out take-up packaging；After the assay was approved to obtain the final product Finished product justifies aluminium bar.
  2. 2. the production method of middle intensity non-aged aluminum alloy electrician circle aluminium bar according to claim 1, it is characterised in that: The copper is obtained by addition copper wire；The magnesium elements are obtained by the magnesium ingot that addition content is 99.9%；The boron Element is obtained by the aluminum-boron alloy that addition boron content is 3%；The aluminium that the rare earth element is 10% by addition content of rare earth Rare earth alloy obtains.
  3. 3. the production method of intensity non-aged aluminum alloy electrician circle aluminium bar, feature exist according to claim 1 one In: the filter process of the step S5 reaches filter effect by filtering three times.
  4. 4. the production method of intensity non-aged aluminum alloy electrician circle aluminium bar, feature exist according to claim 3 one In: the filtering three times includes the first time filtering crossed using 1 × 1mm of level-one glass cross, using second level 30ppi ceramic filter Second of filtering of piece is filtered using the third time of the ceramic filter of three-level 50ppi.
  5. 5. the production method of intensity non-aged aluminum alloy electrician circle aluminium bar, feature exist according to claim 1 one In: the revolving speed of rotor is 450r/min, argon gas dosage 20L/min in the step S6.
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CN110732854A (en) * 2019-10-26 2020-01-31 江西江南精密科技有限公司 Production process of precision heat-dissipation copper blocks
CN115386771A (en) * 2022-10-27 2022-11-25 广州致远新材料科技有限公司 Aluminum alloy material, preparation method thereof and die-casting method of barrier gate transmission structural member
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CN104032191A (en) * 2014-06-24 2014-09-10 江苏长峰电缆有限公司 Energy-saving high-elongation soft aluminum alloy wire and preparation method thereof
CN104357721A (en) * 2014-12-12 2015-02-18 西南铝业（集团）有限责任公司 7050 aluminum alloy
CN104498747A (en) * 2014-12-25 2015-04-08 云南铝业股份有限公司 Preparation method of Al-Zr-RE alloy round aluminum rod
CN105695779A (en) * 2016-04-29 2016-06-22 永城金联星铝合金有限公司 Preparation method of high-precision and high-cleanliness aluminum alloy rod
CN105970008A (en) * 2016-05-19 2016-09-28 广东伟业铝厂集团有限公司 Alloy section material for air cylinders and production technology thereof
CN106435235A (en) * 2016-10-18 2017-02-22 山东创辉新材料科技有限公司 Preparation method for heat-resistant electrician round aluminum rod
CN106480342A (en) * 2016-11-22 2017-03-08 河南中孚铝合金有限公司 A kind of Aluminum alloy pole material with heat-resistant quality and its production method
CN108486436A (en) * 2018-06-12 2018-09-04 中铝东南材料院（福建）科技有限公司 A kind of high-performance aluminium alloy band and preparation method thereof
CN109022968A (en) * 2018-11-06 2018-12-18 阜阳力佳门业有限公司 A kind of processing method of door and window aluminium alloy

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CN110732854A (en) * 2019-10-26 2020-01-31 江西江南精密科技有限公司 Production process of precision heat-dissipation copper blocks
CN115386771A (en) * 2022-10-27 2022-11-25 广州致远新材料科技有限公司 Aluminum alloy material, preparation method thereof and die-casting method of barrier gate transmission structural member
CN115896469A (en) * 2022-12-21 2023-04-04 广东领胜新材料科技有限公司 Deep degassing, impurity removing and purifying method for electrical aluminum alloy liquid
CN115896469B (en) * 2022-12-21 2024-05-14 广东领胜新材料科技有限公司 Deep degassing, impurity removing and purifying method for electrical aluminum alloy liquid

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