CN103451480A - Aluminum alloy round bar and production method thereof - Google Patents
Aluminum alloy round bar and production method thereof Download PDFInfo
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- CN103451480A CN103451480A CN2013103508270A CN201310350827A CN103451480A CN 103451480 A CN103451480 A CN 103451480A CN 2013103508270 A CN2013103508270 A CN 2013103508270A CN 201310350827 A CN201310350827 A CN 201310350827A CN 103451480 A CN103451480 A CN 103451480A
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Abstract
The invention discloses an aluminum alloy round bar and a production process thereof. The aluminum alloy round bar comprises the following chemical components in percentage by weight: 0.2-0.5% of copper, 0.1-0.3% of iron, 0.02-0.05% of silicon, 0-0.02% of titanium, 0-0.02% of potassium, no more than 0.001% of zinc, no more than 0.001% of manganese, no more than 0.0003% of magnesium and the balance of aluminum. The production process sequentially comprises the following steps: electrolyzing a primary aluminum solution, performing component analysis, adding copperon, electromagnetically stirring, determining copper and iron contents in the aluminum liquid, adjusting the temperature, purifying in a furnace, standing in the furnace, purifying outside the furnace, performing on-line degassing, continuously casting, shearing a blank, continuously rolling, cooling, and inspecting to obtain the finished round aluminum bar. The aluminum alloy round bar disclosed by the invention is mainly used for processing of high-conductivity aluminum alloy cables. Compared with copper core cables, the cables produced from the aluminum alloy round bar have better corrosion resistance and creep resistance, the elasticity is reduced by 40%, and the flexibility is increased by 30%; and the cables produced from the aluminum alloy round bar have no memory effect, and are favorable in heat stability.
Description
Technical field
The present invention relates to the aluminum alloy materials technical field, particularly a kind of aluminium alloy round bar and production method thereof.
Background technology
China makes at present electric wire and mainly adopts the fine aluminium round aluminum rod to process, because fine aluminium round aluminum rod intensity is low, tensile strength≤140MPa, usually all to add steel core and form the guiding principle core aluminum stranded wire when making electric wire, this will make the electric wire deadweight increase, resistance increases, erosion resistance reduces, cause electric pole heavy burden increase, line losses increasing, the lost of life, be unfavorable for realizing the high voltage power transmission of large span, high carrying capacity.The high-strength alloy aluminium conductor has good heat resistance, characteristics that current capacity is large, high pressure, ultra-high voltage and and the bus of following voltage level on use can reduce materials consumption, reduce investment outlay, simplify bus structure simultaneously, subtract the metal joint on bus, improve reliability of operation, therefore in generating and power transmission and transformation field, wide prospect of the application is arranged.Particularly after the southern freezing disaster of 2008, National Development and Reform Committee has proposed the paces to the electrical network upgrading, high strength alloy round aluminium rod can be used on high voltage transmission line, for the transformation of urban network increase-volume and the circuit of heavy icing area and the circuit in the narrow hallways of outskirts of a town, also has advantage preferably.So the high strength alloy round aluminium rod product more and more is subject to the attention of power system, Net Frame of Electric Network construction now all trends towards adopting the aldural wire gradually at large overhead crossing engineering, heavy icing area and high current-carrying capacity circuit.
The main performance index of high strength alloy round aluminium rod is: resistivity≤35n Ω m, tensile strength >=150MPa, unit elongation >=10%.But domestic maturation and industrialization are produced the producer of high strength alloy round aluminium rod and are not still existed, even the highest round aluminium bar production line of current domestic equipment is exactly packet header Chinalco 2005 from Italian Continuus company, introduce with two continuous casting and rolling production lines introducing from magnesium state Southwire Co. (Southwire) in 2002 of aluminium Guizhou branch office, do not purchase the alloy formula technology while introducing due to equipment, later stage is not carried out deep research and development to the high strength alloy round aluminium rod production technique yet, former capital can't produce high strength alloy round aluminium rod, fine aluminium round aluminum rod product can only be provided on market.
Summary of the invention
The object of the invention just is to overcome above-mentioned deficiency, and a kind of alloy round aluminum rod and production method thereof are provided.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of aluminium alloy round bar, its chemical component weight proportioning is as follows: copper 0.2～0.5%, iron 0.1～0.3%, silicon 0.02～0.05%, titanium 0～0.02%, potassium 0～0.02%, zinc<=0.001%, manganese<=0.001%, magnesium<=0.0003%, surplus is aluminium.
A kind of production method of aluminium alloy round bar, carry out according to the following steps:
1) electrolysis primary aluminum liquid, analyzed primary aluminum liquid composition;
2) adding content in smelting furnace is the aluminium liquid more than 99.5%, and temperature is controlled between 760～800 ℃; Add copper and chalybeate, content is controlled as copper 0.2～0.5%, iron 0.1～0.3%; First copper and ferrous metal are added into to melting in smelting furnace, keep at the temperature of 760～800 ℃ 30～40 minutes, and with induction stirring thoroughly, uniform stirring half an hour, through on-the-spot sample analysis, determine that in chemical composition, each constituent content meets the requirements;
3) the aluminium solution prepared, be blown into refining treatment in melt with nitrogen by the powder refining agent, and the refining agent consumption is 1.2 kg/tonnes, and passing into nitrogen pressure is 0.05～0.4Mpa, thereby obtain the higher aluminium solution of clarity;
4) the aluminium solution that composition is qualified, temperature is qualified carries out standing, and the time is controlled at 20～40 minutes;
5) in chute, the speed with 150mm/ minute adds aluminium titanium boron wire to carry out online grain refining processing to the aluminium solution, by online degasification and filter cleaner, makes its composition more even, and temperature of aluminum liquid is controlled to 650～750 ℃;
6) in horizontal cast aluminum liquid enters the film chamber of four roller strap wheel compositions, and pass into water coolant at the interior outside, the upper and lower sides four direction of crystallizer, the total pressure of water coolant is 250KPa, and total flux is 1000L/min, and temperature is less than or equal to 35 ℃;
7) strand mills the oxide film of upper surface through edge milling machines, enters the line-frequency induction heat temperature raising, controls into rolling 480～550 ℃ of temperature, carries out continuous rolling;
8) round bar that rolling is good carries out the solution strengthening processing through the atomization quench channel;
9) the aluminium alloy round bar that gets product after the assay was approved.
Preferably, described aluminium alloy round bar chemical component weight proportioning is as follows: copper 0.3%, and iron 0.2%, silicon 0.05%, titanium 0.02%, potassium 0.01%, zinc 0.001%, manganese 0.001%, magnesium 0.0003%, surplus is aluminium.
Preferably, described step 8) temperature is controlled at 200～250 ℃.
The invention has the beneficial effects as follows: aluminium alloy round bar of the present invention is mainly used in processing the aluminium alloy cable of high conductivity, the cable of this kind of aluminum alloy round aluminium bar making has stronger anticorrosion creep-resistant property than copper core cable, the elastic wall copper core cable is little by 40%, flexility is higher by 24% than copper core cable, and memory-less effect, Heat stability is good.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, in illustrative examples and the explanation of this invention, is used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1
A kind of aluminium alloy round bar, its chemical component weight proportioning is as follows: copper 0.3%, iron 0.2%, silicon 0.05%, titanium 0.02%, potassium 0.01%, zinc 0.001%, manganese 0.001%, magnesium 0.0003%, surplus is aluminium.
A kind of production method of aluminium alloy round bar, carry out according to the following steps:
1) electrolysis primary aluminum liquid, analyzed primary aluminum liquid composition;
2) adding content in smelting furnace is the aluminium liquid more than 99.5%, and temperature is controlled between 760 ℃; Add copper and chalybeate, content is controlled as copper 0.3%, iron 0.2%; First copper and ferrous metal are added into to melting in smelting furnace, keep at the temperature of 760 ℃ 30 minutes, and with induction stirring thoroughly, uniform stirring half an hour, through on-the-spot sample analysis, determine that in chemical composition, each constituent content meets the requirements;
3) the aluminium solution prepared, be blown into refining treatment in melt with nitrogen by the powder refining agent, and the refining agent consumption is 1.2 kg/tonnes, and passing into nitrogen pressure is 0.05Mpa, thereby obtain the higher aluminium solution of clarity;
4) the aluminium solution that composition is qualified, temperature is qualified carries out standing, and the time is controlled at 40 minutes;
5) in chute, the speed with 150mm/ minute adds aluminium titanium boron wire to carry out online grain refining processing to the aluminium solution, by online degasification and filter cleaner, makes its composition more even, and temperature of aluminum liquid is controlled to 700 ℃;
6) in horizontal cast aluminum liquid enters the film chamber of four roller strap wheel compositions, and pass into water coolant at the interior outside, the upper and lower sides four direction of crystallizer, the total pressure of water coolant is 250KPa, and total flux is 1000L/min, and temperature is 30 ℃;
7) strand mills the oxide film of upper surface through edge milling machines, enters the line-frequency induction heat temperature raising, controls into rolling 500 ℃ of temperature, carries out continuous rolling;
8) round bar that rolling is good carries out the solution strengthening processing through the atomization quench channel, and temperature is controlled at 200 ℃;
9) the aluminium alloy round bar that gets product after the assay was approved.
Embodiment 2
A kind of aluminium alloy round bar, its chemical component weight proportioning is as follows: copper 0.2%, iron 0.1%, silicon 0.02%, titanium 0.01%, potassium 0.01%, zinc 0.001%, manganese 0.001%, magnesium 0.0003%, surplus is aluminium.
A kind of production method of aluminium alloy round bar, carry out according to the following steps:
1) electrolysis primary aluminum liquid, analyzed primary aluminum liquid composition;
2) adding content in smelting furnace is the aluminium liquid more than 99.5%, and temperature is controlled between 800 ℃; Add copper and chalybeate, content is controlled as copper 0.2%, iron 0.1%; First copper and ferrous metal are added into to melting in smelting furnace, keep at the temperature of 800 ℃ 40 minutes, and with induction stirring thoroughly, uniform stirring half an hour, through on-the-spot sample analysis, determine that in chemical composition, each constituent content meets the requirements;
3) the aluminium solution prepared, be blown into refining treatment in melt with nitrogen by the powder refining agent, and the refining agent consumption is 1.2 kg/tonnes, and passing into nitrogen pressure is 0.4Mpa, thereby obtain the higher aluminium solution of clarity;
4) the aluminium solution that composition is qualified, temperature is qualified carries out standing, and the time is controlled at 20 minutes;
5) in chute, the speed with 150mm/ minute adds aluminium titanium boron wire to carry out online grain refining processing to the aluminium solution, by online degasification and filter cleaner, makes its composition more even, and temperature of aluminum liquid is controlled to 650 ℃;
6) in horizontal cast aluminum liquid enters the film chamber of four roller strap wheel compositions, and pass into water coolant at the interior outside, the upper and lower sides four direction of crystallizer, the total pressure of water coolant is 250KPa, and total flux is 1000L/min, and temperature is 35 ℃;
7) strand mills the oxide film of upper surface through edge milling machines, enters the line-frequency induction heat temperature raising, controls into rolling 480 ℃ of temperature, carries out continuous rolling;
8) round bar that rolling is good carries out the solution strengthening processing through the atomization quench channel, and temperature is controlled at 200 ℃;
9) the aluminium alloy round bar that gets product after the assay was approved.
Embodiment 3
A kind of aluminium alloy round bar, its chemical component weight proportioning is as follows: copper 0.5%, iron 0.3%, silicon 0.05%, titanium 0.02%, potassium 0.02%, zinc 0.001%, manganese 0.001%, magnesium 0.0002%, surplus is aluminium.
A kind of production method of aluminium alloy round bar, carry out according to the following steps:
1) electrolysis primary aluminum liquid, analyzed primary aluminum liquid composition;
2) adding content in smelting furnace is the aluminium liquid more than 99.5%, and temperature is controlled between 780 ℃; Add copper and chalybeate, content is controlled as copper 0.5%, iron 0.3%; First copper and ferrous metal are added into to melting in smelting furnace, keep at the temperature of 780 ℃ 35 minutes, and with induction stirring thoroughly, uniform stirring half an hour, through on-the-spot sample analysis, determine that in chemical composition, each constituent content meets the requirements;
3) the aluminium solution prepared, be blown into refining treatment in melt with nitrogen by the powder refining agent, and the refining agent consumption is 1.2 kg/tonnes, and passing into nitrogen pressure is 0.4Mpa, thereby obtain the higher aluminium solution of clarity;
4) the aluminium solution that composition is qualified, temperature is qualified carries out standing, and the time is controlled at 30 minutes;
5) in chute, the speed with 150mm/ minute adds aluminium titanium boron wire to carry out online grain refining processing to the aluminium solution, by online degasification and filter cleaner, makes its composition more even, and temperature of aluminum liquid is controlled to 700 ℃;
6) in horizontal cast aluminum liquid enters the film chamber of four roller strap wheel compositions, and pass into water coolant at the interior outside, the upper and lower sides four direction of crystallizer, the total pressure of water coolant is 250KPa, and total flux is 1000L/min, and temperature is 30 ℃;
7) strand mills the oxide film of upper surface through edge milling machines, enters the line-frequency induction heat temperature raising, controls into rolling 550 ℃ of temperature, carries out continuous rolling;
8) round bar that rolling is good carries out the solution strengthening processing through the atomization quench channel, and temperature is controlled at 250 ℃;
9) the aluminium alloy round bar that gets product after the assay was approved.
Summary, the described aluminium alloy round bar of embodiment 1 and production method thereof are preferred embodiment of the present invention, when this kind of aluminium alloy round bar is processed into the aluminium alloy cable of high conductivity, when the sectional area of conductor increase to the copper conductor sectional area 150% the time, its electric property is consistent, and the density of this kind of aluminium alloy only has 30% of copper conductor, even therefore sectional area increases to copper conductor sectional area 150%, the weight of aluminium alloy conductor only has 45% of copper conductor.Simultaneously, the aluminium alloy cable that the present embodiment makes has stronger anticorrosion creep-resistant property than copper core cable, and elasticity is less by 40% than copper core cable, and flexility is higher by 30% than copper core cable, and memory-less effect, thermally-stabilised more excellent.
Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, and the technology distortion that every technical scheme according to the present invention is made, within all falling into protection scope of the present invention.
Claims (4)
1. an aluminium alloy round bar, is characterized in that aluminium alloy round bar chemical component weight proportioning is as follows: copper 0.2～0.5%, iron 0.1～0.3%, silicon 0.02～0.05%, titanium 0～0.02%, potassium 0～0.02% ， Xin<=0.001% Meng<=0.001% ， Mei<=0.0003%, surplus is aluminium.
2. the production method of an aluminium alloy round bar is characterized in that carrying out according to the following steps:
1) electrolysis primary aluminum liquid, analyzed primary aluminum liquid composition;
2) adding content in smelting furnace is the aluminium liquid more than 99.5%, and temperature is controlled between 760～800 ℃; Add copper and chalybeate, content is controlled as copper 0.2～0.5%, iron 0.1～0.3%; First copper and ferrous metal are added into to melting in smelting furnace, keep at the temperature of 760～800 ℃ 30～40 minutes, and with induction stirring thoroughly, uniform stirring half an hour, through on-the-spot sample analysis, determine that in chemical composition, each constituent content meets the requirements;
3) the aluminium solution prepared, be blown into refining treatment in melt with nitrogen by the powder refining agent, and the refining agent consumption is 1.2 kg/tonnes, and passing into nitrogen pressure is 0.05～0.4Mpa, thereby obtain the higher aluminium solution of clarity;
4) the aluminium solution that composition is qualified, temperature is qualified carries out standing, and the time is controlled at 20～40 minutes;
5) in chute, the speed with 150mm/ minute adds aluminium titanium boron wire to carry out online grain refining processing to the aluminium solution, by online degasification and filter cleaner, makes its composition more even, and temperature of aluminum liquid is controlled to 650～750 ℃;
6) in horizontal cast aluminum liquid enters the film chamber of four roller strap wheel compositions, and pass into water coolant at the interior outside, the upper and lower sides four direction of crystallizer, the total pressure of water coolant is 250KPa, and total flux is 1000L/min, and temperature is less than or equal to 35 ℃;
7) strand mills the oxide film of upper surface through edge milling machines, enters the line-frequency induction heat temperature raising, controls into rolling 480～550 ℃ of temperature, carries out continuous rolling;
8) round bar that rolling is good carries out the solution strengthening processing through the atomization quench channel;
9) the aluminium alloy round bar that gets product after the assay was approved.
3. aluminium alloy round bar according to claim 1, it is characterized in that: described aluminium alloy round bar chemical component weight proportioning is as follows: copper 0.3%, iron 0.2%, silicon 0.05%, titanium 0.02%, potassium 0.01%, zinc 0.001%, manganese 0.001%, magnesium 0.0003%, surplus is aluminium.
4. the production method of aluminium alloy round bar according to claim 2, it is characterized in that: described step 8) temperature is controlled at 200～250 ℃.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028961A (en) * | 2014-06-11 | 2014-09-10 | 远东电缆有限公司 | Intermediate-strength aluminum alloy wire and process for manufacturing same |
| CN104064254A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Aluminum alloy cable core and production technology of aluminum alloy cable core |
| CN104561862A (en) * | 2014-07-23 | 2015-04-29 | 安徽四翔铝业有限公司 | Aluminum alloy heat treatment process |
| CN105671369A (en) * | 2014-11-21 | 2016-06-15 | 富阳科信经济信息咨询有限公司 | Production process for alloy round aluminum rod |
| CN110310757A (en) * | 2019-07-17 | 2019-10-08 | 天津市津和双金属线材有限公司 | A kind of preparation method of the dedicated aluminium bar of aluminum enameled wire |
| CN112853160A (en) * | 2020-12-31 | 2021-05-28 | 蔚然（南京）动力科技有限公司 | Motor rotor cast aluminum alloy and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101492783A (en) * | 2009-02-27 | 2009-07-29 | 云南铝业股份有限公司 | Formulating method for Al-Cu alloy round aluminum rod |
| CN101956103A (en) * | 2010-10-20 | 2011-01-26 | 云南铝业股份有限公司 | High strength alloy round aluminium rod and production method thereof |
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- 2013-08-13 CN CN2013103508270A patent/CN103451480A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492783A (en) * | 2009-02-27 | 2009-07-29 | 云南铝业股份有限公司 | Formulating method for Al-Cu alloy round aluminum rod |
| CN101956103A (en) * | 2010-10-20 | 2011-01-26 | 云南铝业股份有限公司 | High strength alloy round aluminium rod and production method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028961A (en) * | 2014-06-11 | 2014-09-10 | 远东电缆有限公司 | Intermediate-strength aluminum alloy wire and process for manufacturing same |
| CN104064254A (en) * | 2014-07-08 | 2014-09-24 | 国家电网公司 | Aluminum alloy cable core and production technology of aluminum alloy cable core |
| CN104561862A (en) * | 2014-07-23 | 2015-04-29 | 安徽四翔铝业有限公司 | Aluminum alloy heat treatment process |
| CN105671369A (en) * | 2014-11-21 | 2016-06-15 | 富阳科信经济信息咨询有限公司 | Production process for alloy round aluminum rod |
| CN110310757A (en) * | 2019-07-17 | 2019-10-08 | 天津市津和双金属线材有限公司 | A kind of preparation method of the dedicated aluminium bar of aluminum enameled wire |
| CN112853160A (en) * | 2020-12-31 | 2021-05-28 | 蔚然（南京）动力科技有限公司 | Motor rotor cast aluminum alloy and preparation method thereof |
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Application publication date: 20131218 |