CN102134693A - Annealing method of rare earth-iron-aluminum alloy conductor material for cables - Google Patents
Annealing method of rare earth-iron-aluminum alloy conductor material for cables Download PDFInfo
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- CN102134693A CN102134693A CN 201110060732 CN201110060732A CN102134693A CN 102134693 A CN102134693 A CN 102134693A CN 201110060732 CN201110060732 CN 201110060732 CN 201110060732 A CN201110060732 A CN 201110060732A CN 102134693 A CN102134693 A CN 102134693A
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Abstract
The invention discloses an annealing method of a rare earth-iron-aluminum alloy conductor material for cables, wherein the annealing is carried out under the conditions of 280-360DEG C and 3-30h or 361-420DEG C and 2-20h; and the rare earth iron-aluminum alloy material comprises the following components in percentage by weight: 0.20-1.5wt/% of Fe, 0.005-5wt/% of rare earth element, other elements less than 0.5wt/% and the balance of A1. After smelting, casting, hot rolling, cold drawing and twisting, an aluminum alloy conductor core is obtained; and after annealing treatment, the aluminum alloy conductor core has excellent electric property, extension property and flexibility and is suitable for wire and cable conductor cores.
Description
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Technical field
The invention belongs to electric wire and make the field, be specifically related to the method for annealing of a kind of cable with rare earth ferro-aluminium conductor material.
Background technology
Copper conductor annealing need just can be carried out in the device of a sealing, otherwise copper is easy under hot conditions oxidation take place, thereby changes the electrical property of copper, and is therefore very high to the requirement of equipment.Along with the rapid growth of electric wire demand, the consumption of copper heightens day by day, and existing copper ore resource reserves do not satisfy the demand to copper far away, and the overwhelming majority needs dependence on import, therefore is badly in need of seeking a kind of substitute products.The rare earth ferro-aluminium just has good conductivity, can replace copper conductor, but because mechanical properties not as copper, therefore needs by handling, to improve the performance of alloy, wherein anneal is exactly the key link.But because rare earth ferro-aluminium conductor is a kind of novel material, not relevant annealing report and patented technology about alloy.
Summary of the invention
The purpose of this invention is to provide the method for annealing of a kind of cable with rare earth ferro-aluminium conductor material, effectively solve the aluminium alloy conductor core rolling, draw and strand system process in influence that the conductor performance is caused, make aluminium alloy conductor have excellent electric performance and mechanical property.
The objective of the invention is to realize in the following manner, through melting, casting, hot rolling, cold drawn, the stranded and aluminium alloy conductor core made, conductor thread core carries out anneal under 280 ~ 360 ℃ * 3 ~ 30h/361 ~ 420 ℃ * 2 ~ 20h, how many annealing times is adjusted according to conductor thread core sabot amount.Carry out anneal under 361 ~ 420 ℃ * 2 ~ 20h, annealing furnace need vacuumize, and charges into nitrogen protection.
Used annealing device is well formula annealing furnace, box-annealing furnace, bench vehicle type electrical resistance furnace or bell-jar annealing furnace among the present invention.
It is the Fe of 0.20 ~ 1.5wt%, the rare earth element of 0.005 ~ 5wt% by percentage to the quality that rare earth ferro-aluminium conductor material among the present invention is formed, and content of impurities≤0.5wt% remains and is Al.
The aluminium alloy conductor core need be through the processing of 3 ~ 30h 280 ~ 360 ℃ of annealing among the present invention, and anneal at 361 ~ 420 ℃ need be in order to guarantee that carrying out anneal under different temperature satisfies electric property and the mechanical property that has excellence as conductor thread core through the processing of 2 ~ 20h like this.Carry out anneal under 361 ~ 420 ℃, annealing furnace need vacuumize, and charges into nitrogen protection, and this is that aluminum alloy materials is easy to not only be had influence on the electrical property of aluminium alloy by oxidation in the air, and can have influence on the work-ing life of aluminium alloy because at high temperature.
Method for annealing of the present invention is applicable to that alloy composition is: the Fe of 0.20 ~ 1.5wt%, the rare earth element of 0.005 ~ 5wt%, other element total contents are no more than 0.5wt%, remain to be Al.Rare earth element can be elementary composition by in 17 kinds of elements one or more.
Beneficial effect:
1, by the aluminium alloy conductor core after this method for annealing processing, because anneal can be eliminated the internal stress that conductor produces in rolling, drawing and stranded process, improve because the lattice defect that the external force effect causes, improve the crystalline structure structure, and anneal can reduce the solid solubility of Fe in aluminium base, reduce iron therein to the influence of electrical property, play the purpose that improves the conductor electrical property, make the electrical property of conductor thread core can reach 61%IACS.
2, rare earth has the effect of good crystal grain thinning and Zhi Jing, since the existence of rare earth can be effectively further refinement crystalline structure, suppress the thick rich iron phase of sheet (T2 phase) appearance in the aluminium alloy, the thick massive phase that former intracrystalline is distributed disappears, form spherical phase, crystal boundary place strip and chunky shape compound obviously reduce.And because the electronegativity of rare earth is bigger, relatively more active, in the time of in being dissolved in aluminium liquid, very easily fill up the surface imperfection of alloy phase, thereby reduce the surface tension on the new and old two-phase interface, make the speed of nucleus growth increase, also between crystal grain and alloy liquid, form surface-active film simultaneously, stop the grain growth that generates, make the alloy structure refinement.Anneal makes alloy generation recrystallization, crystal changes into coarse grain by thin crystalline substance, thick crystal grain helps reducing alloy intermolecular slippage when stressed, the resistance that reduces to be out of shape, thereby make alloy plasticity strengthen, and crystal grain is big more, and plasticity is good more, the tensile property of alloy is also just good more, and tensile strength is just low more.Thereby anneal makes that original mechanical property of aluminium alloy is improved greatly, and the elongation at break of aluminium alloy surpasses 10%, and tensile strength is between 90 ~ 160MPa.
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Embodiment
Embodiment 1:
The rare earth ferro-aluminium comprises: the Fe of 0.20 ~ 1.5wt%, the rare earth element of 0.005 ~ 5wt%, content of impurities≤0.5wt% remains and is Al.Rare earth element can by in 17 kinds of elements any one or multiple elementary composition.
Through melting, casting, hot rolling, cold drawn, the stranded and aluminium alloy conductor core made, conductor thread core carries out anneal at 280 ~ 360 ℃ * 3 ~ 30h or under 361 ~ 420 ℃ * 2 ~ 20h, how many annealing times is adjusted according to conductor thread core sabot amount.When carrying out anneal under 361 ~ 420 ℃ * 2 ~ 20h, annealing furnace need vacuumize, and charges into nitrogen protection.
Used annealing device is well formula annealing furnace, box-annealing furnace, bench vehicle type electrical resistance furnace or bell-jar annealing furnace among the present invention.
Annealed electric conductivity 〉=the 61%IACS that handles the back conductor thread core, the elongation at break of medullary ray 〉=10%, tensile strength 〉=90MPa.As shown in table 1.
Table 1
Claims (5)
1. a cable is with the method for annealing of rare earth ferro-aluminium conductor material; comprise conventional melting, casting, hot rolling, cold drawn, stranded, annealing operation; it is characterized in that: the parameter during annealing is controlled to be: 280 ~ 360 ℃ * 3 ~ 30h or adopt in a vacuum 361 ~ 420 ℃ * 2 ~ 20h under the nitrogen protection.
2. cable according to claim 1 is characterized in that with the method for annealing of rare earth ferro-aluminium conductor material annealing time is adjusted according to the sabot amount of conductor thread core.
3. cable according to claim 1 is characterized in that with the method for annealing of rare earth ferro-aluminium conductor material annealing is carried out in well formula annealing furnace, box-annealing furnace, bench vehicle type electrical resistance furnace or bell-jar annealing furnace.
4. the cable according to claim 1 method for annealing of rare earth ferro-aluminium conductor material, it is characterized in that, described cable is formed with rare earth ferro-aluminium conductor material: the Fe of 0.20 ~ 1.5wt%, the rare earth element of 0.005 ~ 5wt%, foreign matter content≤0.5wt% remains and is Al.
5. cable according to claim 4 is characterized in that with the method for annealing of rare earth ferro-aluminium conductor material, and described rare earth element is by any one or multiple composition the in 17 kinds of rare earth elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060732 CN102134693A (en) | 2011-03-15 | 2011-03-15 | Annealing method of rare earth-iron-aluminum alloy conductor material for cables |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060732 CN102134693A (en) | 2011-03-15 | 2011-03-15 | Annealing method of rare earth-iron-aluminum alloy conductor material for cables |
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| CN102134693A true CN102134693A (en) | 2011-07-27 |
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| CN 201110060732 Pending CN102134693A (en) | 2011-03-15 | 2011-03-15 | Annealing method of rare earth-iron-aluminum alloy conductor material for cables |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864344A (en) * | 2012-08-30 | 2013-01-09 | 安徽太平洋电缆集团有限公司 | Rare-earth aluminum alloy conductor for cable and manufacturing method thereof |
| CN102969087A (en) * | 2012-12-04 | 2013-03-13 | 四川明星电缆股份有限公司 | Manufacturing method for interlocked armored aluminum alloy flat cable |
| CN103397286A (en) * | 2013-07-22 | 2013-11-20 | 浙江凯萨特电缆有限公司 | Aluminum alloy cable conductor annealing process |
| CN104264003A (en) * | 2014-09-26 | 2015-01-07 | 国网河南省电力公司周口供电公司 | Stretch-proof energy-saving aluminum alloy conductor and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1057152A (en) * | 1963-06-12 | 1967-02-01 | Furukawa Electric Co Ltd | Aluminium alloys for electric conductors |
| CN101525709A (en) * | 2009-04-24 | 2009-09-09 | 安徽欣意电缆有限公司 | High-elongation aluminum alloy material and preparation method thereof |
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
-
2011
- 2011-03-15 CN CN 201110060732 patent/CN102134693A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1057152A (en) * | 1963-06-12 | 1967-02-01 | Furukawa Electric Co Ltd | Aluminium alloys for electric conductors |
| CN101525709A (en) * | 2009-04-24 | 2009-09-09 | 安徽欣意电缆有限公司 | High-elongation aluminum alloy material and preparation method thereof |
| CN101886198A (en) * | 2010-07-13 | 2010-11-17 | 安徽欣意电缆有限公司 | High-conductivity aluminum alloy material for cable and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864344A (en) * | 2012-08-30 | 2013-01-09 | 安徽太平洋电缆集团有限公司 | Rare-earth aluminum alloy conductor for cable and manufacturing method thereof |
| CN102969087A (en) * | 2012-12-04 | 2013-03-13 | 四川明星电缆股份有限公司 | Manufacturing method for interlocked armored aluminum alloy flat cable |
| CN102969087B (en) * | 2012-12-04 | 2015-05-20 | 四川明星电缆股份有限公司 | Manufacturing method for interlocked armored aluminum alloy flat cable |
| CN103397286A (en) * | 2013-07-22 | 2013-11-20 | 浙江凯萨特电缆有限公司 | Aluminum alloy cable conductor annealing process |
| CN104264003A (en) * | 2014-09-26 | 2015-01-07 | 国网河南省电力公司周口供电公司 | Stretch-proof energy-saving aluminum alloy conductor and preparation method thereof |
| CN104264003B (en) * | 2014-09-26 | 2016-09-07 | 国网河南省电力公司周口供电公司 | A kind of energy-saving aluminium alloy wire of stretch-proof and preparation method thereof |
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Application publication date: 20110727 |