CN102912193A - High-conductivity creep-resistant aluminum-alloy conductor and manufacturing method thereof - Google Patents
High-conductivity creep-resistant aluminum-alloy conductor and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to a high-conductivity creep-resistant aluminum-alloy conductor and a manufacturing method thereof. The high-conductivity creep-resistant aluminum-alloy conductor comprises the following chemical compositions in percentage by weight: 0.05-0.30% of Cu, 0.25-1.00% of Fe, 0.001-0.22% of Mg, 0.001-0.15% of Si, 0.001-0.10% of Zn, 0.001-0.04% of B, and the balance of Al and other unavoidable impurity elements; the content of each element in the other unavoidable impurity elements is not more than 0.30%; and the total content of the other unavoidable impurity elements is not more than 0.10%. The impurity content of aluminum ingot is strictly controlled through boronizing and secondary refining, the electric conductivity and creep-resistant performance of aluminum-alloy round bars are ensured, the performance requirements for aluminum-alloy in the industry are satisfied, and the high-conductivity creep-resistant aluminum-alloy conductor is particularly suitable for manufacturing high-conductivity creep-resistant cables.
Description
Technical field
The present invention relates to a kind of aluminium alloy conductor, be specifically related to a kind of electrician and use high conduction creep resistance aluminium alloy conductor and manufacture method thereof.
Background technology
The electrician who is used for power transmission at present adopts copper material mostly with electro-conductive material, but because internal copper resource scarcity, the supply of copper ore concentrates is less than 30%, there is the ratio that surpasses more than 70% all to need import, and climbing up and up along with the World Copper valency, so that the cost of investment of electro-conductive material is more and more higher, also excessive to the resource consumption of copper material.China is the countries of the few copper of many aluminium, putting domestic a large amount of bauxite resource need not, be great waste.Country advocates and builds a conservation-minded society now, is also encouraging employing with " aluminium joint copper " in the industry.
General aluminium alloy conductor electric conductivity commonly used is all less than 53%IACS at present; The LY4 type electrician circle aluminum steel that meets GB/T 3955-2009 regulation commonly used, its electric conductivity is 61%IACS, and tensile strength is 95～125MPa, and elongation at break is generally less than 15%, and it in the high temperature pressure situation creep strain more than 10% can occur.Because the electrician is low with the electric conductivity of pure aluminium vire material, yield strength is low, and the creep strain amount is large, the elongation less, when being used for power transmission, can because larger creep strain occurs behind long-term operation or the current overload, joint is loosening, contact resistance increases thereby cause, and produces safety problem.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide that a kind of creep-resistant property is good, unit elongation is high, good bending property is easy to machine-shaping, and a kind of electrician that can guarantee to be electrically connected stability is with high conduction creep resistance aluminium alloy conductor.
The second purpose of the present invention is to provide a kind of manufacture method of high conduction creep resistance aluminium alloy conductor.
A kind of high conduction creep resistance aluminium alloy conductor of the present invention, its chemical composition and mass percent thereof: Cu:0.05～0.30%, Fe:0.25～1.00%, Mg:0.001～0.22%, Si:0.001～0.15%, Zn:0.001～0.10%, B:0.001～0.04%, all the other are Al and inevitable other impurity element, and the content of every kind of element all is no more than 0.03% in described inevitably other impurity element, and inevitably the total amount of other impurity element is no more than 0.10%.
According to the present invention, the weight percent of preferred each component is: Cu:0.15～0.30%, Fe:0.35～0.80%, Mg:0.001～0.05%, Si:0.001～0.10%, Zn:0.001～0.05%, B:0.001～0.04%, all the other are Al and inevitable other impurity element, and the content of every kind of element all is no more than 0.03% in described inevitably other impurity element, and inevitably the total amount of other impurity element is no more than 0.10%.
Described preparation method comprises: the stabilizing annealing of the continuous casting and rolling of the refining of fine aluminium ingot high temperature melting, aluminum solutions " boronation " processing, aluminum solutions, the Alloying Treatment of aluminum solutions and secondary refining, aluminium alloy rod, drawing aluminium alloy single line, aluminium alloy single line is processed.
Described fine aluminium liquid needs " boronation " to process, it is after the aluminium liquid through high melt is cooled to 700～750 ℃ and samming that described boronation is processed, add making it of Al-B master alloy clear, increase molten aluminium temperature to 780～900 ℃, be incubated 10～40 minutes, then molten aluminium be cooled to 700～750 ℃ again.
The refining of described aluminium liquid is that the aluminium liquid after boronation is processed adds an amount of refining agent, and passes into dry argon gas (Ar) aluminium liquid is carried out refining, and leaves standstill insulation 20～40 minutes.
Aluminium liquid after " boronation " processing of described process and refining and the Alloying Treatment need to carry out secondary refining, further reduces air content and inclusion in the molten aluminium, improves subsequently conductivity and the mechanical property of prepared aluminium alloy round bar.
Described aluminium alloy melt through secondary refining prepares the aluminium alloy round bar of diameter 8～20mm by the mode of direct water-cooling continuous casting continuous rolling.
The aluminium alloy single line of described drawing need carry out stabilizing annealing to be processed, and annealing temperature is incubated 5-48 hour and is advisable with 280-330 ℃.
Beneficial effect of the present invention is:
Aluminium alloy conductor of the present invention is compared with existing pure aluminum material, increased substantially heatproof resistance to compression creep properties, its creep elongation under normal temperature and high temperature is far below electrician's aluminium conductor, close to copper conductor, therefore when this wire during at long-time running and long term overloading, can guarantee the stability of electrical connection.
Aluminium alloy conductor elongation at break of the present invention is much better than electrician's circle aluminum steel, and its resistance to bend(ing) can be better than aluminium conductor and copper conductor, and bounce-back property is convenient to product processing and mounting and installation far below copper conductor.
Description of drawings
Fig. 1 is manufacturing flow chart of the present invention.
Embodiment
The electrician sees Table 1 with the specific embodiment composition of high conduction creep resistance aluminium alloy conductor, and the preparation diameter is 3.0mm aluminum alloy round single line.
Table 1 electrician uses the high creep resistance al alloy component (unit: wt%) that conducts electricity
| Example | Cu | Fe | Mg | Si | Zn | B | Do not protect and avoid impurity (single) | Do not protect and avoid impurity (total amount) | Al |
| Example 1 | 0.21 | 0.46 | 0.01 | 0.08 | 0.02 | 0.01 | ≤0.01 | ≤0.08 | Surplus |
| Example 2 | 0.22 | 0.43 | 0.01 | 0.07 | 0.02 | 0.02 | ≤0.01 | ≤0.06 | Surplus |
Embodiment 1:
As shown in Figure 1, prepare according to following steps:
1, fine aluminium ingot high temperature melting: 99.7% required by a certain percentage weighing of GB remelted aluminum ingot is good, put into smelting furnace and carry out high temperature melting, after aluminium liquid occurring, add surface dopant, prevent aluminium liquid oxidation and air-breathing.Etc. whole aluminium ingotizations clear after, rising molten aluminium temperature to 870～900 ℃, insulation is 30 minutes under this temperature, then molten aluminium is cooled to 700 ℃, removes the insulating covering agent on aluminium liquid surface and the slag of generation.
2, " boronation " of aluminum solutions processed: load weighted high-purity Al-B master alloy is added in the aluminium liquid, carry out " boronation " and process, wait the Al-B master alloyization clear after, again add insulating covering agent and the temperature of aluminum liquid to 800 ℃ of raising, be incubated 30 minutes, be cooled to subsequently 700 ℃ and samming 10 minutes.
3, the refining of aluminium liquid: the insulating covering agent on aluminium liquid surface and the slag of generation are taken off after will covering boronation and processing, and add an amount of refining agent, and pass into dry argon gas (Ar) aluminium liquid is carried out refining.After refining finished, aluminium liquid left standstill 30 minutes, then the refining agent on aluminium liquid surface and the scum silica frost of generation was taken off.
4, the Alloying Treatment of aluminum solutions and secondary refining: with load weighted Al-Cu, Al-Fe and Al-Mg master alloy add in the aluminium liquid after the refining successively.After the interpolation master alloyization was clear, rising temperature of aluminum liquid to 800 ℃ was incubated 40 minutes, then reduced temperature of aluminum liquid to 700 ℃, again carried out aluminium alloy melt refining removal of impurities degassed.
5, the continuous casting and rolling of aluminium alloy rod: the aluminium alloy melt that reaches the composition requirement to finishing alloying, refining and acquisition carries out direct water-cooling continuous casting, process milling train continuous rolling, and the preparation diameter is the aluminium alloy round bar of 9.5mm.
6, draw the aluminium alloy single line: under lubricated condition, the aluminium alloy round bar use multimode non-sliding type aluminum alloy drawing machine to continuous casting and rolling carries out the multi-pass multimode and draws, and is pulled to the aluminium alloy single line that requires size, and the drawing unit elongation is 5-20%.
7, the stabilizing annealing of aluminum alloy line is processed: the aluminium alloy single line that draws is carried out anneal, and annealing temperature is 300 ℃, and the annealing insulation is 18 hours.
Embodiment 2:
The alloying constituent of embodiment 2 in the reference list 1 prepares according to following steps:
1, fine aluminium ingot high temperature melting: 99.7% required by a certain percentage weighing of GB remelted aluminum ingot is good, put into smelting furnace and carry out high temperature melting, after aluminium liquid occurring, add surface dopant, prevent aluminium liquid oxidation and air-breathing.Etc. whole aluminium ingotizations clear after, rising molten aluminium temperature to 870～900 ℃, insulation is 30 minutes under this temperature, then molten aluminium is cooled to 730 ℃, removes the insulating covering agent on aluminium liquid surface and the slag of generation.
2, " boronation " of aluminum solutions processed: load weighted high-purity Al-B master alloy is added in the aluminium liquid, carry out " boronation " and process, wait the Al-B master alloyization clear after, again add insulating covering agent and the temperature of aluminum liquid to 850 ℃ of raising, be incubated 30 minutes, be cooled to subsequently 730 ℃ and samming 10 minutes.
3, the refining of aluminium liquid: the insulating covering agent on aluminium liquid surface and the slag of generation are taken off after will covering boronation and processing, and add an amount of refining agent, and pass into dry argon gas (Ar) aluminium liquid is carried out refining.After refining finished, aluminium liquid left standstill 30 minutes, then the refining agent on aluminium liquid surface and the scum silica frost of generation was taken off.
4, the Alloying Treatment of aluminum solutions and secondary refining: with load weighted Al-Cu, Al-Fe and Al-Mg master alloy add in the aluminium liquid after the refining successively.After the interpolation master alloyization was clear, rising temperature of aluminum liquid to 850 ℃ was incubated 40 minutes, then reduced temperature of aluminum liquid to 730 ℃, again carried out aluminium alloy melt refining removal of impurities degassed.
5, the continuous casting and rolling of aluminium alloy rod: the aluminium alloy melt that reaches the composition requirement to finishing alloying, refining and acquisition carries out direct water-cooling continuous casting, process milling train continuous rolling, and the preparation diameter is the aluminium alloy round bar of 9.5mm.
6, draw the aluminium alloy single line: under lubricated condition, the aluminium alloy round bar use multimode non-sliding type aluminum alloy drawing machine to continuous casting and rolling carries out the multi-pass multimode and draws, and is pulled to the aluminium alloy single line that requires size, and the drawing unit elongation is 5-20%.
7, the stabilizing annealing of aluminum alloy line is processed: the aluminium alloy single line that draws is carried out anneal, and annealing temperature is 280 ℃, and the annealing insulation is 20 hours.
The end properties test result that table 2 is made for embodiment 1-2.
Table 2 diameter is that 3.0mm electrician uses high conduction creep resistance aluminium alloy conductor and electrician's pure aluminium vire performance comparison
Above content is in conjunction with concrete preferential embodiment further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.Should be understood that; for the general technical staff of the technical field of the invention; under the prerequisite that does not break away from the principle of the invention; can also make some alternative or obvious modification that are equal to; and performance or purposes are identical, then also should be considered as belonging to the protection domain that claims that the present invention submits to are determined.
Claims (8)
1. one kind high conduction creep resistance aluminium alloy conductor and manufacture method thereof, it is characterized in that: chemical composition and the mass percent thereof of described high conduction creep resistance aluminium alloy conductor: Cu:0.05～0.30%, Fe:0.25～1.00%, Mg:0.001～0.22%, Si:0.001～0.15%, Zn:0.001～0.10%, B:0.001～0.04%, all the other are Al and inevitable other impurity element, the content of every kind of element all is no more than 0.03% in described inevitably other impurity element, and inevitably the total amount of other impurity element is no more than 0.10%.
2. high conduction creep resistance aluminium alloy conductor according to claim 1 and manufacture method thereof, it is characterized in that: chemical composition and the mass percent thereof of described high conduction creep resistance aluminium alloy conductor: Cu:0.15～0.30%, Fe:0.35～0.80%, Mg:0.001～0.05%, Si:0.001～0.10%, Zn:0.001～0.05%, B:0.001～0.04%, all the other are Al and inevitable other impurity element, the content of every kind of element all is no more than 0.03% in described inevitably other impurity element, and inevitably the total amount of other impurity element is no more than 0.10%.
3. high conduction creep resistance aluminium alloy conductor according to claim 1 and 2 and manufacture method thereof, it is characterized in that: described preparation method comprises: fine aluminium ingot high temperature melting, aluminum solutions " boronation " are processed, the continuous casting and rolling of the Alloying Treatment of the refining of aluminum solutions, aluminum solutions and secondary refining, aluminium alloy rod, the stabilizing annealing that draws aluminium alloy single line, aluminium alloy single line are processed.
4. high conduction creep resistance aluminium alloy conductor according to claim 3 and manufacture method thereof, it is characterized in that: described fine aluminium liquid needs " boronation " are processed, it is after the aluminium liquid through high melt is cooled to 700～750 ℃ and samming that described boronation is processed, add making it of Al-B master alloy clear, increase molten aluminium temperature to 780～900 ℃, be incubated 10～40 minutes, then molten aluminium be cooled to 700～750 ℃ again.
5. high conduction creep resistance aluminium alloy conductor according to claim 3 and manufacture method thereof, it is characterized in that: the refining of described aluminium liquid is that the aluminium liquid after boronation is processed adds an amount of refining agent, and pass into dry argon gas (Ar) aluminium liquid is carried out refining, and leave standstill insulation 20～40 minutes.
6. high conduction creep resistance aluminium alloy conductor according to claim 4 and manufacture method thereof, it is characterized in that: the aluminium liquid after " boronation " processing of described process and refining and the Alloying Treatment, need to carry out secondary refining, further reduce air content and inclusion in the molten aluminium, improve subsequently conductivity and the mechanical property of prepared aluminium alloy round bar.
7. high conduction creep resistance aluminium alloy conductor according to claim 3 and manufacture method thereof, it is characterized in that: described aluminium alloy melt through secondary refining prepares the aluminium alloy round bar of diameter 8～20mm by the mode of direct water-cooling continuous casting continuous rolling.
8. high conduction creep resistance aluminium alloy conductor according to claim 3 and manufacture method thereof, it is characterized in that: the aluminium alloy single line of described drawing need carry out stabilizing annealing to be processed, and annealing temperature is incubated 5-48 hour and is advisable with 280-330 ℃.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276257A (en) * | 2013-06-20 | 2013-09-04 | 深圳深缆科技有限公司 | Aluminum alloy conductor rod for electrician |
| CN103397226A (en) * | 2013-07-22 | 2013-11-20 | 浙江凯萨特电缆有限公司 | Aluminum alloy pole material |
| CN103854807A (en) * | 2014-02-26 | 2014-06-11 | 远东电缆有限公司 | High-conductivity hard aluminum wire and preparing technology thereof |
| CN104264014A (en) * | 2014-10-17 | 2015-01-07 | 湖南创元铝业有限公司 | Aluminum alloy rod and processing method thereof |
| CN104561862A (en) * | 2014-07-23 | 2015-04-29 | 安徽四翔铝业有限公司 | Aluminum alloy heat treatment process |
| CN105316535A (en) * | 2015-01-31 | 2016-02-10 | 安徽华纳合金材料科技有限公司 | Copper-containing ferro-aluminum alloy wire and fabrication method thereof |
| CN107974581A (en) * | 2017-12-12 | 2018-05-01 | 河南胜华电缆集团有限公司 | A kind of cable High-conductivity creep-resistant aluminum-alloy conductor and preparation method thereof |
| CN109487100A (en) * | 2018-11-29 | 2019-03-19 | 长江师范学院 | A kind of cond aluminium bar continuous casting and tandem rolling and borax treatment method and device |
| CN109564790A (en) * | 2016-07-21 | 2019-04-02 | 希库蒂米魁北克大学 | Aluminium conductor alloy with improved creep resistance |
| CN110358955A (en) * | 2019-08-07 | 2019-10-22 | 安庆市泽烨新材料技术推广服务有限公司 | A kind of high conductivity aluminium alloy and preparation method thereof |
| CN114807702A (en) * | 2022-03-23 | 2022-07-29 | 山东博源精密机械有限公司 | Al-Mg-Fe system motor rotor alloy and preparation method and application thereof |
| CN116435003A (en) * | 2023-05-24 | 2023-07-14 | 中天科技海缆股份有限公司 | Modified aluminum alloy conductor, production process thereof and modified aluminum alloy conductor cable |
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| CN102021444A (en) * | 2010-12-09 | 2011-04-20 | 北京科技大学 | High-conductive heat-resistant aluminium alloy conductor and preparation method thereof |
| CN102222546A (en) * | 2011-06-24 | 2011-10-19 | 航天电工技术有限公司 | Interlocking type armored optical fiber composite low-voltage cable of creep-resistant aluminum alloy conductor |
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| US3697260A (en) * | 1969-12-30 | 1972-10-10 | Aluminum Co Of America | Aluminum conductor wire |
| CN102021444A (en) * | 2010-12-09 | 2011-04-20 | 北京科技大学 | High-conductive heat-resistant aluminium alloy conductor and preparation method thereof |
| CN102222546A (en) * | 2011-06-24 | 2011-10-19 | 航天电工技术有限公司 | Interlocking type armored optical fiber composite low-voltage cable of creep-resistant aluminum alloy conductor |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103276257A (en) * | 2013-06-20 | 2013-09-04 | 深圳深缆科技有限公司 | Aluminum alloy conductor rod for electrician |
| CN103397226A (en) * | 2013-07-22 | 2013-11-20 | 浙江凯萨特电缆有限公司 | Aluminum alloy pole material |
| CN103854807B (en) * | 2014-02-26 | 2016-10-19 | 远东电缆有限公司 | A kind of high-conductivity hard aluminum wire and preparation technology thereof |
| CN103854807A (en) * | 2014-02-26 | 2014-06-11 | 远东电缆有限公司 | High-conductivity hard aluminum wire and preparing technology thereof |
| CN104561862A (en) * | 2014-07-23 | 2015-04-29 | 安徽四翔铝业有限公司 | Aluminum alloy heat treatment process |
| CN104264014A (en) * | 2014-10-17 | 2015-01-07 | 湖南创元铝业有限公司 | Aluminum alloy rod and processing method thereof |
| CN105316535A (en) * | 2015-01-31 | 2016-02-10 | 安徽华纳合金材料科技有限公司 | Copper-containing ferro-aluminum alloy wire and fabrication method thereof |
| CN109564790A (en) * | 2016-07-21 | 2019-04-02 | 希库蒂米魁北克大学 | Aluminium conductor alloy with improved creep resistance |
| US11532407B2 (en) | 2016-07-21 | 2022-12-20 | Universite Du Quebec A Chicoutimi | Aluminum conductor alloys having improved creeping resistance |
| CN107974581A (en) * | 2017-12-12 | 2018-05-01 | 河南胜华电缆集团有限公司 | A kind of cable High-conductivity creep-resistant aluminum-alloy conductor and preparation method thereof |
| CN109487100A (en) * | 2018-11-29 | 2019-03-19 | 长江师范学院 | A kind of cond aluminium bar continuous casting and tandem rolling and borax treatment method and device |
| CN110358955A (en) * | 2019-08-07 | 2019-10-22 | 安庆市泽烨新材料技术推广服务有限公司 | A kind of high conductivity aluminium alloy and preparation method thereof |
| CN114807702A (en) * | 2022-03-23 | 2022-07-29 | 山东博源精密机械有限公司 | Al-Mg-Fe system motor rotor alloy and preparation method and application thereof |
| CN116435003A (en) * | 2023-05-24 | 2023-07-14 | 中天科技海缆股份有限公司 | Modified aluminum alloy conductor, production process thereof and modified aluminum alloy conductor cable |
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Application publication date: 20130206 |