CN102888542A - Preparation method of copper-aluminum alloy electric conductor - Google Patents
Preparation method of copper-aluminum alloy electric conductor Download PDFInfo
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Abstract
The invention relates to a preparation method of a copper-aluminum alloy electric conductor. The copper-aluminum alloy electric conductor is prepared from the following raw materials in percentage by mass: 5.5-10.0% of copper, 0.1-0.5% of silver, 0.20-0.4% of magnesium, 0.1-0.3% of lanthanum and the balance of aluminum. The purities of the components are respectively higher than 99.99%. The preparation method comprises the following steps: smelting the component metals, casting to obtain an alloy bar, carrying out annealing treatment on the bar at 250-350 DEG C for 15-25 hours; after annealing, carrying out wire drawing at 363-420 DEG C in a protective atmosphere, wherein the wire drawing is carried out many times; and carrying out annealing treatment at 350-380 DEG C for 1-2 hours before the last wire drawing, thereby obtaining the electric conductor with the diameter of 1.0-2.0mm, wherein the last wire drawing is carried out at 380-400 DEG C at the rate of 6-10 m/min. The electric conductor has the advantages of high electric conductivity and high mechanical strength.
Description
Technical field
The present invention relates to a kind of X alloy cable conductor material preparation method.
Background technology
Cable conductor is most at present adopts copper conductor, because the copper valency is high, copper conductor accounts for more than 70% of copper cable cost.And larger creep occurs in the use fine aluminium behind long-time running or the current overload, causes contact resistance too large, easily cause accident, and bending property is bad, and is easy to crack or fracture, equally easily accidents caused.
The electric conductivity of now widely used aluminum alloy wire cable is 61%IACS, and resistivity is 2.830 * 10-8, is necessary to develop that a kind of electric conductivity is high, resistivity is low, the aluminium alloy electrical conductor of good mechanical property.
Summary of the invention
The invention provides a kind of X alloy electrical conductor preparation method, the conductivity of the conductor material that provides and mechanical property all are significantly increased and are cheap.
Technical solution problem of the present invention adopts following technical scheme:
X alloy electrical conductor preparation method of the present invention is characterized in that raw material constitutes by mass percentage: copper 5.5-10.0%, silver 0.1-0.5%, magnesium 0.20-0.4%, lanthanum element 0.1-0.3%, surplus is aluminium, and wherein each composition alloy purity is more than 99.99%; Mentioned component Metal Melting, casting are obtained alloy bar material, bar is carried out anneal, annealing temperature is 250-350 ℃, and the time is 15-25h; Wire drawing after the annealing, wherein wire-drawing temperature is 363-420 ℃, wire drawing is carried out under protective atmosphere, through the multi-pass wire drawing; Carry out anneal before last passage wire drawing, annealing temperature 350-380 ℃, the time is 1-2h, and drawing speed is 6-10m/min during last one wire drawing, and wire-drawing temperature is 380-400 ℃, obtains diameter 1.0-2.0mm electrical conductor.
Can add the mixture that refining agent is muriate and fluorochemical in the fusion process, Repone K 15-20% wherein, magnesium chloride 10-15%, sodium-chlor 15-20%, Sodium Fluoride 15-30%, Potassium monofluoride 20-40%, aluminum fluoride is 20-40%, and wherein the summation of various moietys is 100%.
The aluminum bronze silver magnesium-rare earth alloy material of gained of the present invention has following advantage:
1, copper is between 5.5-10.0% among the present invention, and copper can improve the physical strength of electrical conductor, improves tensile strength and improves elongation, the thermostability of resistance when copper can also improve high temperature.
2, silver element is between 0.1-0.5% among the present invention, and silver can improve the physical strength of electrical conductor, improves electric conductivity.
3, magnesium elements is between 0.20-0.4% among the present invention, and magnesium is carried heavy alloyed corrosion resistance nature, and magnesium forms slag, eliminates intercrystalline impurity, thereby improves the intensity of electrical conductor.
4, lanthanum element is 0.1-0.3% among the present invention, and the electric conductivity of electrical conductor is exerted an influence, and is conducive to improve the electric conductivity of aluminium alloy.
Among the preparation method of the present invention, under 380-400 ℃ wire-drawing temperature, the alloy grain that the drawing speed of 6-10m/min forms is better, and impurity is few between crystal boundary, and unit elongation is good, and the circular tolerance of the electrical conductor that wire drawing forms reduces.
Electrical conductor electric conductivity of the present invention be at least 62%IACS and more than, improve at least 1% than the common aluminum alloy electro-conductive material.
Embodiment
Material composition sees Table 1, and being prepared into diameter is the 1.0-2.0mm electrical conductor, and unit is mass percent %.
| Copper | Silver | Magnesium | Lanthanum element | Aluminium | |
| Embodiment 1 | 5.5 | 0.5 | 0.2 | 0.1 | Surplus |
| Embodiment 2 | 6.0 | 0.5 | 0.2 | 0.2 | Surplus |
| Embodiment 3 | 7.0 | 0.4 | 0.3 | 0.2 | Surplus |
| Embodiment 4 | 8.0 | 0.4 | 0.3 | 0.2 | Surplus |
| Embodiment 5 | 9.0 | 0.2 | 0.4 | 0.3 | Surplus |
| Embodiment 6 | 10.0 | 0.1 | 0.4 | 0.3 | Surplus |
| Comparative Examples 1 | 5.0 | 0.5 | 0.2 | 0.2 | Surplus |
| Comparative Examples 2 | 10.5 | 0.1 | 0.1 | 0.2 | Surplus |
Table 1
Embodiment 1:
Alloying constituent by embodiment in the table 11 obtains alloy bar material with mentioned component Metal Melting, casting, and bar is carried out anneal, and annealing temperature is 250-350 ℃, and the time is 15-25h; Wire drawing after the annealing, wherein wire-drawing temperature is 363-420 ℃, wire drawing is carried out under protective atmosphere, through the multi-pass wire drawing; Carry out anneal before last passage wire drawing, annealing temperature 350-380 ℃, the time is 1-2h, and drawing speed is 6m/min during last one wire drawing, and wire-drawing temperature is 380 ℃, and the electrical conductor diameter that wire drawing obtains is 1.0mm.
Embodiment 2:
Press the alloying constituent of embodiment 2 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.0mm, and wherein wire-drawing temperature is 8m/min, and wire-drawing temperature is 390 ℃.
Embodiment 3
Press the alloying constituent of embodiment 3 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.2mm, and wherein wire-drawing temperature is 9m/min, and wire-drawing temperature is 390 ℃.
Embodiment 4
Press the alloying constituent of embodiment 4 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.4mm, and wherein wire-drawing temperature is 9m/min, and wire-drawing temperature is 390 ℃.
Embodiment 5
Press the alloying constituent of embodiment 5 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.6mm, and wherein wire-drawing temperature is 10m/min, and wire-drawing temperature is 390 ℃.
Embodiment 6
Press the alloying constituent of embodiment 6 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 2.0mm, and wherein wire-drawing temperature is 10m/min, and wire-drawing temperature is 400 ℃.
Comparative Examples 1
Press the alloying constituent of Comparative Examples 1 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.0mm, and wherein wire-drawing temperature is 6m/min, and wire-drawing temperature is 380 ℃.
Comparative Examples 2
Press the alloying constituent of Comparative Examples 2 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 2.0mm, and wherein wire-drawing temperature is 10m/min, and wire-drawing temperature is 400 ℃.
Comparative Examples 3
Press the alloying constituent of embodiment 1 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.0mm, and wherein wire-drawing temperature is 4m/min, and wire-drawing temperature is 340 ℃.
Comparative Examples 4
Press the alloying constituent of embodiment 1 in the table 1, the preparation method is identical with embodiment 1.The electrical conductor diameter that wire drawing obtains is 1.0mm, and wherein wire-drawing temperature is 11m/min, and wire-drawing temperature is 420 ℃.
Table 2 is the performance test results of 2.55mm aluminum steel for the diameter of embodiment 1-6, Comparative Examples 1-2 preparation.
Table 2
Table 3 shows the variation of roundness tolerance under different heating and the wire-drawing temperature.
| Roundness tolerance | |
| Embodiment 1 | 5μm |
| Comparative Examples 3 | 21μm |
| Comparative Examples 4 | 18μm |
Table 3
As can be seen from Table 2, the electrical conductor electric conductivity of embodiment 1-6 can both reach 62.0%IACS, and resistivity is less than 2.680 * 10
-8Tension set is not less than 14.0%, and the electrical conductor of preparation has excellent electrical property and mechanical property thus, can be applicable to electric wire and cable conductor.
As can be seen from Table 3, the roundness tolerance among the embodiment 1 is 5 μ m, is far smaller than Comparative Examples 3 and Comparative Examples 4.
Existing common aluminum alloy electrical conductor electric conductivity be 61%IACS, electrical conductor electric conductivity of the present invention be at least 62%IACS and more than.Can learn in the circuit that by calculating because resistance losses can reduce by 2%, energy-saving effect is obvious.The tensile strength of electrical conductor of the present invention is at least 136MPa simultaneously, meets the requirement of national standard fully.Adopt simultaneously electrical conductor preparation method of the present invention, roundness tolerance is little.
Above content is the further description of the present invention being done in conjunction with concrete optimal technical scheme, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. an X alloy electrical conductor preparation method is characterized in that raw material constitutes by mass percentage: copper 5.5-10.0%, silver 0.1-0.5%, magnesium 0.20-0.4%, lanthanum element 0.1-0.3%, surplus is aluminium, and wherein the preferred purity of each composition alloy is more than 99.99%; Mentioned component Metal Melting, casting are obtained alloy bar material, bar is carried out anneal, annealing temperature is 250-350 ℃, and the time is 15-25h; Wire drawing after the annealing, wherein wire-drawing temperature is 363-420 ℃, wire drawing is carried out under protective atmosphere, through the multi-pass wire drawing; Carry out anneal before last passage wire drawing, annealing temperature 350-380 ℃, the time is 1-2h, and drawing speed is 6-10m/min during last one wire drawing, and wire-drawing temperature is 380-400 ℃, obtains diameter 1.0-2.0mm electrical conductor.
2. alloy is headed direct for method as claimed in claim 1, it is characterized in that to add described refining agent in the fusion process, comprise Repone K 15-20%, magnesium chloride 10-15%, sodium-chlor 15-20%, Sodium Fluoride 15-30%, Potassium monofluoride 20-40%, aluminum fluoride is 20-40%, and wherein the summation of various moietys is 100%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264006A (en) * | 2014-09-28 | 2015-01-07 | 国网河南省电力公司周口供电公司 | Low-resistance aluminium-alloy conductor and preparation method thereof |
| CN104726749A (en) * | 2015-03-19 | 2015-06-24 | 苏州欢颜电气有限公司 | Aluminum alloy conductor material |
| CN105463275A (en) * | 2015-12-30 | 2016-04-06 | 合肥星辰电线电缆股份有限公司 | High-wear-resistance and high-electric-conductivity rear earth copper-aluminum alloy used for cables |
| CN108014543A (en) * | 2018-01-02 | 2018-05-11 | 关险峰 | A kind of ormolu water process filter wire and preparation method thereof |
| CN108060319A (en) * | 2018-01-11 | 2018-05-22 | 谢石华 | A kind of efficiently pure aluminum alloy ring protects refining agent and its manufacturing method |
| CN108130442A (en) * | 2018-01-11 | 2018-06-08 | 谢石华 | A kind of smokeless aluminium alloy environmental protection refining agent of no sodium and its manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219094C (en) * | 2003-12-30 | 2005-09-14 | 上海交通大学 | High strength casting heat resisting aluminium alloy containing rare earth cerium |
| CN101880799A (en) * | 2010-07-13 | 2010-11-10 | 安徽欣意电缆有限公司 | Al-Fe-Zn-Mg rare earth alloy wire and preparation method thereof |
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2012
- 2012-10-25 CN CN201210410809.2A patent/CN102888542B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264006A (en) * | 2014-09-28 | 2015-01-07 | 国网河南省电力公司周口供电公司 | Low-resistance aluminium-alloy conductor and preparation method thereof |
| CN104726749A (en) * | 2015-03-19 | 2015-06-24 | 苏州欢颜电气有限公司 | Aluminum alloy conductor material |
| CN104726749B (en) * | 2015-03-19 | 2016-10-12 | 苏州欢颜电气有限公司 | A kind of aluminium alloy conductor material |
| CN105463275A (en) * | 2015-12-30 | 2016-04-06 | 合肥星辰电线电缆股份有限公司 | High-wear-resistance and high-electric-conductivity rear earth copper-aluminum alloy used for cables |
| CN108014543A (en) * | 2018-01-02 | 2018-05-11 | 关险峰 | A kind of ormolu water process filter wire and preparation method thereof |
| CN108060319A (en) * | 2018-01-11 | 2018-05-22 | 谢石华 | A kind of efficiently pure aluminum alloy ring protects refining agent and its manufacturing method |
| CN108130442A (en) * | 2018-01-11 | 2018-06-08 | 谢石华 | A kind of smokeless aluminium alloy environmental protection refining agent of no sodium and its manufacturing method |
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| CN102888542B (en) | 2016-08-17 |
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