CN102360624A - Manufacturing method of aluminium alloy wire rod used for power transmission - Google Patents
Manufacturing method of aluminium alloy wire rod used for power transmission Download PDFInfo
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- CN102360624A CN102360624A CN2011102702772A CN201110270277A CN102360624A CN 102360624 A CN102360624 A CN 102360624A CN 2011102702772 A CN2011102702772 A CN 2011102702772A CN 201110270277 A CN201110270277 A CN 201110270277A CN 102360624 A CN102360624 A CN 102360624A
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- aluminium alloy
- manufacturing approach
- wire rod
- aluminium
- electric energy
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Abstract
The invention discloses a manufacturing method of an aluminium alloy wire rod used for power transmission. The alloy comprises, by weight, 0.028 to 0.030 % of Zr, 0.058 to 0.07 % of Ti, 0.01 to 0.15 % of Ta, and the balance being aluminium and unavoidable impurities. According to the method provided in the invention, on the basis of the alloy ratios, a feed metal is processed by continuous casting and is stretched into a rough blank wire; the rough blank wire is preheated by a heater, wherein a preheating temperature is 400 to 450 DEG C and a heating time is 1 to 2 hours; after the preheating process, a water cooling process is carried out; and then cold rolling processing is carried out to obtain a wire rod with diameter of 5 to 8 mm. Besides, the wire rod has a tensile strength of 22.5 to 23.5 Kg/mm2 and a conductivity of 62.5 to 64.8 IACS%; moreover, the wire rod has advantages of high conductivity and good heat resistance performance.
Description
Technical field
The present invention relates to conduct electricity manufacturing approach, specifically relate to a kind of aluminium alloy wires manufacturing approach that is used for electric energy transmitting.
Background technology
At present the most of copper that adopts of electric wire is as conductor, thereby because the copper scarcity of resources, the copper valency is too high and the high development that has limited electric wire of copper cable installation cost.Because bauxite resource is abundant and cost is low, being used for electric wire with aluminium substitution copper as conductor will be a kind of trend.But elongation, pliability and the creep-resistant property of electric wire is all relatively poor during as conductor with common electrician's aluminium, and stability safe in utilization is low, thereby uses common electrician's aluminium substitution copper can't satisfy the needs of electric wire development as conductor.
In field of power transmission, aluminium light weight, inexpensive, and conductivity is better, specific strength is high, mar proof is good, thereby occupy superiority at electrical field.At overhead transmission line, especially on supertension line and the big span line, the aluminium alloy electric cable is the material of main part of overhead power transmission cable always.
At present developed the multiple aluminium alloy electric cable that is used for electric energy transmitting, but still can not satisfy complicated natural conditions, sleet is freezing and the needs of remote territory over strait stringing, still need further improve its performance.And at home; Also there be big gap in production technology, properties of product, big span aerial cable line application technology etc. with comparing abroad; Continuous growth along with Electricity Demand; The transmission line transmission capacity constantly increases, and the overhead power transmission cable is had higher requirement, and development high-strength and high-conductivity aluminium alloy electric cable has realistic meaning very much.
The wire material production method of prior art, itself otherwise directly stretch, fracture easily, be unfavorable for continuous production.Even part enterprise adopts heater means, but its heating-up temperature is high, and is too obvious for the distortion of this alloy.
Summary of the invention
To the deficiency of prior art, the object of the present invention is to provide a kind of aluminium alloy wires manufacturing approach that is used for electric energy transmitting, comprise following components by weight percent:
Zr 0.028-0.030％
Ti 0.058-0.07％
Ta 0.01-0.15％
Surplus is aluminium and unavoidable impurities; It is characterized in that; Said manufacturing approach is: by alloy proportion feed metal is drawn into the crude green body line through continuous casting, the crude green body line preheats through heater, and pre-heating temperature is 400-450 ℃; Be 1-2s heating time, after preheating through after the water-cooled through the cold rolling wire rod that is processed into diameter 5-8mm.
Aluminium alloy wires manufacturing approach hot strength is 22.5-23.5Kg/mm
2
Conductance is 62.5-64.8IACS%.
The aluminium alloy conduction manufacturing approach that the present invention is prepared; Conductance is high; Good heat resistance, tensile strength is high, and its outstanding reason is except Zr, the Ti element; The applicant recognizes that the adding of Ta element can strengthen conductance, tensile strength and the thermal endurance of the aluminium alloy that above-mentioned two kinds of elements form, and its reason is according to the MO coupling of element itself;
Other outstanding advantage of the present invention is: through preheating step, wire rod is well stretched, and the rate of fractureing is 0, and this temperature range helps the diffusion of atom simultaneously, further optimizes the performance of this alloy.
Embodiment
Embodiment one
Zr 0.028％
Ti 0.07％
Ta 0.01％
Surplus is aluminium and unavoidable impurities,
Said manufacturing approach is: by alloy proportion feed metal is drawn into the crude green body line through continuous casting; The crude green body line preheats through heater; Pre-heating temperature is 400-450 ℃, and be 1-2s heating time, after preheating through after the water-cooled through the cold rolling wire rod that is processed into diameter 6.5mm.
Through detecting its tensile strength is 22.5Kg/mm
2, conductance is 62.5IACS%.
Embodiment two
Zr 0.030％
Ti 0.058％
Ta 0.15％
Surplus is aluminium and unavoidable impurities,
Said manufacturing approach is: by alloy proportion feed metal is drawn into the crude green body line through continuous casting; The crude green body line preheats through heater; Pre-heating temperature is 450 ℃, and be 1s heating time, after preheating through after the water-cooled through the cold rolling wire rod that is processed into diameter 8mm.
Through detecting its tensile strength is 23.8Kg/mm
2, conductance is 64.8IACS%.
Embodiment three
Zr 0.029％
Ti 0.06％
Ta 0.1％
Surplus is aluminium and unavoidable impurities,
Through detecting its tensile strength is 23.1Kg/mm
2, conductance is 63.2IACS%.
By alloy proportion with feed metal through the continuous casting be drawn into the crude green body line, the crude green body line preheats through heater, pre-heating temperature is 400 ℃, be 2s heating time, after preheating through after the water-cooled through the cold rolling wire rod that is processed into diameter 5.5mm.
Under 150 ℃, 6.5kg/mm
2Hot strength under, the creep rate of the foregoing description 1-3 is lower than 0.01%.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technological process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technological process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technological process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (5)
1. aluminium alloy wires manufacturing approach that is used for electric energy transmitting, said alloy comprises following components by weight percent:
Zr?0.028-0.030％
Ti?0.058-0.07％
Ta?0.01-0.15％
Surplus is aluminium and unavoidable impurities; It is characterized in that; Said manufacturing approach is: by alloy proportion feed metal is drawn into the crude green body line through continuous casting, the crude green body line preheats through heater, and pre-heating temperature is 400-450 ℃; Be 1-2s heating time, after preheating through after the water-cooled through the cold rolling wire rod that is processed into diameter 5-8mm.
2. the aluminium alloy wires manufacturing approach that is used for electric energy transmitting according to claim 1 is characterized in that the manufacturing approach diameter is 5.5-6.5mm.
3. the aluminium alloy wires manufacturing approach that is used for electric energy transmitting according to claim 1 is characterized in that aluminium alloy wires manufacturing approach hot strength is 22.5-23.5Kg/mm
2
4. according to the aluminium alloy wires manufacturing approach that is used for electric energy transmitting of one of claim 1-3, it is characterized in that: conductance is 62.5-64.8IACS%.
5. according to the aluminium alloy wires manufacturing approach that is used for electric energy transmitting of one of claim 1-3, it is characterized in that: under 150 ℃, 6.5kg/mm
2Hot strength under, creep rate is lower than 0.01%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102702772A CN102360624A (en) | 2011-09-13 | 2011-09-13 | Manufacturing method of aluminium alloy wire rod used for power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102702772A CN102360624A (en) | 2011-09-13 | 2011-09-13 | Manufacturing method of aluminium alloy wire rod used for power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102360624A true CN102360624A (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102702772A Pending CN102360624A (en) | 2011-09-13 | 2011-09-13 | Manufacturing method of aluminium alloy wire rod used for power transmission |
Country Status (1)
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| CN (1) | CN102360624A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695728A (en) * | 2013-12-27 | 2014-04-02 | 安徽欣意电缆有限公司 | Al-Fe-B aluminum alloy, preparation method thereof and aluminum alloy cable |
-
2011
- 2011-09-13 CN CN2011102702772A patent/CN102360624A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695728A (en) * | 2013-12-27 | 2014-04-02 | 安徽欣意电缆有限公司 | Al-Fe-B aluminum alloy, preparation method thereof and aluminum alloy cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |