CN105088035B - A kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material and preparation method - Google Patents
A kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material and preparation method Download PDFInfo
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Abstract
The invention discloses highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of one kind and preparation method thereof.Belong to electrical material preparing technical field.The aluminum-alloy conductor material is mainly made up of aluminium, magnesium, copper, iron and boron and inevitable impurity element.Its preparation method is to melt technical pure aluminium ingot, is added into melt after the intermediate alloy of magnesium, copper, iron and boron, agitated, refining, stokehold fast analyzing constituent, composition adjustment, standing, and continuous casting and rolling is into circular aluminium alloy rod.Electrical conductivity >=59.2%IACS of the aluminum-alloy conductor material, tensile strength >=240MPa, elongation percentage >=2.0%.Instant component reasonable mixture ratio, preparation technology are simple, and continuous casting and rolling is to obtain the nonheat-treatable aluminum alloy conductor material with high conductance and preferable tensile strength；Continuous production is easy to implement, can effectively lower production cost and the energy resource consumption of aluminium alloy conductor, manufacture efficiency is high, remarkable in economical benefits, suitable for industrial applications.
Description
Technical field
The present invention relates to electric wire conductor material, a kind of highly conductive middle intensity nonheat-treatable aluminum alloy is specifically referred to
Conductor material and preparation method, belong to electrical material preparing technical field.
Background technology
With the development of Chinese national economy, electricity needs is continuously increased, and the requirement of electric power energy in the transmission is more next
Higher, " the strong intelligent grid " built based on super, extra high voltage line is of increasing concern." transferring electricity from the west to the east, north and south it is mutual
For, it is on national network " strategic plan under, " the two of " resource-conserving, environmentally friendly and new technology, new material, new technology "
Type three is new " under the demand of power grid construction, intensity, elongation percentage and the electrical conductivity of transmission pressure are improved, high-pressure trend, Large Copacity is set up
Change, long distance ionization transmission pressure turns into the developing direction of aluminium alloy conductor.But the intensity of aluminum-alloy conductor material and electrical conductivity
It is conflict body, both are often absorbed in shifting predicament, how preferably takes into account both indexs and sent out as aluminium alloy
The key of exhibition.Nonheat-treatable aluminium conductor material has higher intensity and preferable electric conductivity, can exempt heat treatment step,
Manufacturing cost is reduced, manufacture efficiency is improved, with significant energy-conserving and environment-protective and economic benefit meaning.
Microalloying be improve alloy property effective means, such as Chinese patent CN102816960B, CN101770828B,
CN102363849B, is, by microalloying means, to realize the preparation of nonheat-treatable aluminium conductor material.Its Patent
The elongation percentage of the non-heat-treatable aluminum alloy conductor material of CN102816960B exploitations has reached 2%, but the conductance of material is only
57.5%IACS is reached, tensile strength is 225MPa.Patent CN101770828B is by adjusting alloying component and improving processing work
Skill obtains the aluminum-alloy conductor material that conductance is more than 60%IACS, but the tensile strength of material only reaches 171MPa, and
And without the elongation percentage of report material.The highly conductive aluminum-alloy conductor material of nonheat-treatable disclosed in patent CN102363849B
Conductance is more than 61%IACS, and elongation percentage is more than 2.0%, but the tensile strength of material only has 160-170MPa.With full aluminium
The popularization of alloy twisted wire, the intensity index to aluminum alloy materials requires more and more higher, how in of a relatively high conductance situation
The intensity index of lower lifting material turns into the focus that cable worker studies.
The content of the invention
It is an object of the invention to overcome the deficiency of prior art and to provide a kind of reasonable mixture ratio of components, preparation technology simple
Highly conductive middle intensity nonheat-treatable aluminum alloy conductor material and preparation method.Aluminum-alloy conductor material prepared by the present invention,
Intensity is high, conductance is higher, elongation percentage is larger, is not required to heat treatment and achieves that tensile strength is 240MPa, elongation percentage is
2.0%, conductance is 59.2%IACS.
A kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the invention, including following components, by quality hundred
Divide than composition：
0.10~0.20wt% of Mg,
0.20~0.30wt% of Cu,
0.15~0.30wt% of Fe,
0.05~0.10wt% of B,
Inevitable impurity silicone content is less than 0.05%, and impurity titanium, vanadium, chromium, the content summation of manganese are less than 0.01%；Aluminium is
Surplus.
A kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the invention also contains niobium, and the quality percentage of niobium contains
Amount is more than 0 and is less than or equal to 0.20%.
A kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the invention also contains erbium, and the quality percentage of erbium contains
Amount is more than 0 and is less than or equal to 0.10%.
A kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the present invention, is the aluminium by design
Conductor material component proportioning chooses technical pure aluminium ingot, magnesium, copper, iron, the intermediate alloy of boron respectively；Purity is more than to 99.7% work
Industry fine aluminium ingot is melted, and magnesium, copper, iron, the intermediate alloy of boron are added into melt, in 740 DEG C~760 DEG C insulations, treats intermediate alloy
After being completely melt, after agitated, refining, stokehold fast analyzing constituent, composition adjustment, standing, continuous casting and rolling is into circular aluminium alloy
Bar.
A kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the present invention, the magnesium, copper,
Iron, the intermediate alloy of boron are aluminium base magnesium, copper, iron, boron intermediate alloy.
A kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the present invention, intermediate alloy is complete
After fusing, niobium and/or weight/mass percentage composition of the weight/mass percentage composition more than 0 less than or equal to 0.20% are added into alloy molten solution big
It is less than or equal to 0.10% erbium in 0；The niobium and/or erbium are added with intermediate alloy.
A kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the present invention, casting and rolling process
Parameter is：Enter to roll 480 DEG C -530 DEG C of temperature, 200 DEG C -280 DEG C of finishing temperature, total deformation >=90%；Preferably enter to roll temperature
For 480-510 DEG C, finishing temperature is 200-240 DEG C, total deformation >=93%.
Highly conductive middle intensity nonheat-treatable aluminum alloy conductor material of the present invention, using copper, magnesium, iron microalloying,
Effectively increase the intensity of the cond aluminium；The micro alloying element boron of addition, effectively improves the conduction of the cond aluminium
Property；Compound addition niobium and/or erbium, can effectively refine the crystal grain of the cond aluminium, improve the heat resistance of alloy and purify base
Body.The present invention using above-mentioned multicomponent trace alloying element addition, by the synergy of each constituent element, realize it is highly conductive in
The preparation of intensity nonheat-treatable aluminum alloy conductor material, prepared aluminum alloy materials conductance reaches 59.2%IACS, resists
Tensile strength be more than 240MPa, elongation percentage be more than 2.0%, compared with prior art prepare nonheat-treatable aluminum alloy conductor material it is strong
Degree, plasticity are high, and electric conductivity is suitable.
Beneficial effects of the present invention are：The present invention provides a kind of new material with Material Field for electric wire and cable conductor.This
Invention is by the combined microalloying of almag, aluminium copper and alfer, strength aluminium alloy in acquisition, basic herein
On, by adding aluminium boron and Al-Er alloy, effectively control impurity profiles and quantity；By adding aluminium niobium alloy, reach that refinement is closed
The crystal grain of gold, then, carries out continuous casting and rolling, and it is 480 DEG C -530 DEG C to control into temperature is rolled, and finishing temperature is 200 DEG C -280 DEG C, always
Deflection >=90%, it is final to obtain the high aluminum alloy materials of intensity height, good toughness, conductance.The aluminium that the present invention is prepared is closed
Golden materials conductive rate reaches 59.2%IACS, and tensile strength is more than 240MPa, and elongation percentage is more than 2.0%, is prepared compared with prior art
The intensity of nonheat-treatable aluminum alloy conductor material, plasticity it is high, electric conductivity is suitable.Use the full aluminium of material manufacture of the present invention
Alloy twisted wire, can be produced using continuous casting and rolling mode with directly, can exempt heat treatment step, it is not necessary to alloy pig material or alloy
Bar carries out Homogenization Treatments, eliminates the ageing treatment process of high-strength aluminum alloy, therefore can solve due to heat treatment
The reduction manufacturing cost that quantity-produced bottleneck problem reduces aluminium alloy conductor is unable to, production efficiency is improved, with notable
Energy-conserving and environment-protective and economic benefit meaning.
In summary, instant component reasonable mixture ratio, preparation technology are simple, and continuous casting and rolling is to obtain to have high conductance
And the nonheat-treatable aluminum alloy conductor material of preferable tensile strength；Continuous production is easy to implement, can effectively lower aluminium alloy
The production cost of wire and energy resource consumption, manufacture efficiency are high, remarkable in economical benefits, suitable for industrial applications.
Brief description of the drawings
Accompanying drawing 1 is the as-cast structure metallograph of alloy prepared by the embodiment of the present invention 2.
Accompanying drawing 2 is the X ray diffracting spectrum of alloy prepared by the embodiment of the present invention 2.
As shown in Figure 1：The as-cast structure of alloy prepared by embodiment 2 is in the shaft-like dendrite distribution such as typical, crystal grain chi
It is very little at 200 μm or so.
As shown in Figure 2：The diffraction maximum without the second phase occurs in alloy prepared by embodiment 2, shows alloying element in matrix
In it is main exist in the form of solid solution state, or exist in the form of minority specioz, but laboratory apparatus be difficult to identification its whether
In the presence of.
Embodiment
Embodiment 1
It is more than 99.7% technical pure aluminium ingot (wherein Si ＜ 2.5 × 10 with purity-3%), closed in the middle of Al-11.07%Mg
Gold, Al-37.41%Cu intermediate alloys, Al-5.0%Fe intermediate alloys and Al-2.5%B intermediate alloys are raw material, first by industry
Fine aluminium is put into melt in furnace, and aluminium alloy adds magnalium intermediate alloy, aluminum bronze intermediate alloy, ferro-aluminum in 740 DEG C of -760 DEG C of insulations
Intermediate alloy and aluminium boron intermediate alloy, the mass percent for making each element is：Magnesium is 0.11%, and copper is 0.21%, and iron is
0.17%, boron is 0.059%, and control impurity silicone content reaches 0.034%, control titanium, vanadium, chromium, manganese impurity content summation
0.0058% is reached, aluminium is surplus.After intermediate alloy is completely melt, agitated, refining, stokehold fast analyzing constituent, composition
After adjustment, standing, continuous casting and rolling is into circular aluminium alloy rod, wherein it is 500 DEG C to enter to roll temperature, finishing temperature is 240 DEG C, rolling
Deflection is 90.3%.Conductance and strength character test are carried out to aluminium conductor material, as a result as shown in table 1.
The aluminum-alloy conductor material comprehensive performance evaluation table of table 1
Embodiment 2
It is more than 99.7% technical pure aluminium ingot (wherein Si ＜ 2.5 × 10 with purity-4%), closed in the middle of Al-11.07%Mg
In the middle of gold, Al-37.41%Cu intermediate alloys, Al-5.0%Fe intermediate alloys, Al-2.5%B intermediate alloys and Al-9.53%Er
Alloy is raw material, and commercial-purity aluminium first is put into melt in furnace, and aluminium alloy is added in the middle of magnalium and closed in 740 DEG C of -760 DEG C of insulations
Gold, aluminum bronze intermediate alloy, ferro-aluminum intermediate alloy, aluminium boron intermediate alloy and aluminium erbium intermediate alloy, make the mass percent of each element
For：Magnesium is 0.13%, and copper is 0.23%, and iron is 0.16%, and boron is 0.087%, and erbium is 0.079%, and control impurity silicone content reaches
To 0.028%, control titanium, vanadium, chromium, manganese impurity content summation reach 0.0071%, and aluminium is surplus.Treat that intermediate alloy is complete
After fusing, after agitated, refining, stokehold fast analyzing constituent, composition adjustment, standing, continuous casting and rolling into circular aluminium alloy rod, its
In enter to roll temperature for 530 DEG C, finishing temperature is 280 DEG C, and the deflection of rolling is 90.8%.Conductance is carried out to aluminium conductor material
Tested with strength character, as a result as shown in table 2.
The aluminum-alloy conductor material comprehensive performance evaluation table of table 2
Embodiment 3
It is more than 99.7% technical pure aluminium ingot (Si ＜ 2.5 × 10 with purity-4%), Al-11.07%Mg intermediate alloys, Al-
37.41%Cu intermediate alloys, Al-5.0%Fe intermediate alloys, Al-2.5%B intermediate alloys, Al-9.53%Er intermediate alloys and
Al-9.02%Nb intermediate alloys are raw material, and commercial-purity aluminium first is put into melt in furnace, and aluminium alloy is incubated at 740 DEG C -760 DEG C,
Add in magnalium intermediate alloy, aluminum bronze intermediate alloy, ferro-aluminum intermediate alloy, aluminium boron intermediate alloy, aluminium erbium intermediate alloy and aluminium niobium
Between alloy, the mass percent for making each element is：Magnesium is 0.17%, and copper is 0.22%, and iron is 0.21%, and boron is 0.091%, erbium
For 0.029%, niobium is 0.13%, and control impurity silicone content reaches 0.03%, control titanium, vanadium, chromium, manganese impurity content summation
0.0063% is reached, aluminium is surplus.After intermediate alloy is completely melt, agitated, refining, stokehold fast analyzing constituent, composition
After adjustment, standing, continuous casting and rolling is into circular aluminium alloy rod, wherein it is 480 DEG C to enter to roll temperature, finishing temperature is 200 DEG C, rolling
Deflection is 91.3%.Conductance and strength character test are carried out to aluminium conductor material, as a result as shown in table 3.
The aluminum-alloy conductor material comprehensive performance evaluation table of table 3
It was found from the data that embodiment 1-3 is obtained：The aluminum alloy materials conductance that the present invention is prepared reaches 59.2%
IACS, tensile strength is more than 240MPa, and elongation percentage is more than 2.0%, the nonheat-treatable aluminum alloy conductor prepared compared with prior art
Intensity, the plasticity of material are high, and electric conductivity is suitable.
Claims (5)
1. a kind of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material, including following components, are constituted by mass percentage：
0.10 ~ 0.20wt% of Mg,
0.20 ~ 0.30wt% of Cu,
0.15 ~ 0.30wt% of Fe,
0.05 ~ 0.10wt% of B,
Nb is more than 0 and is less than or equal to 0.20%；Or
0.10 ~ 0.20wt% of Mg,
0.20 ~ 0.30wt% of Cu,
0.15 ~ 0.30wt% of Fe,
0.05 ~ 0.10wt% of B,
Er is more than 0 and is less than or equal to 0.10%；Or
0.10 ~ 0.20wt% of Mg,
0.20 ~ 0.30wt% of Cu,
0.15 ~ 0.30wt% of Fe,
0.05 ~ 0.10wt% of B,
Nb is more than 0 and is less than or equal to 0.20%,
Er is more than 0 and is less than or equal to 0.10%；
Inevitable impurity silicone content is less than 0.05%, and impurity titanium, vanadium, chromium, the content summation of manganese are less than 0.01%；Aluminium is remaining
Amount；The aluminum-alloy conductor material conductance reaches 59.2%IACS, and tensile strength is more than 240MPa, and elongation percentage is more than 2.0%.
2. preparing a kind of method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material as claimed in claim 1, it is
Technical pure aluminium ingot, magnesium, copper, iron, the intermediate alloy of boron are chosen respectively by the aluminium conductor material component proportioning of design；Purity is more than
99.7% technical pure aluminium ingot fusing, magnesium, copper, iron, the intermediate alloy of boron are added into melt, in 740 DEG C ~ 760 DEG C insulations, are treated
After intermediate alloy is completely melt, after agitated, refining, stokehold fast analyzing constituent, composition adjustment, standing, continuous casting and rolling Cheng Yuan
Shape aluminium alloy rod.
3. a kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material according to claim 2,
It is characterized in that：The magnesium, copper, iron, the intermediate alloy of boron are aluminium base magnesium, copper, iron, boron intermediate alloy.
4. a kind of preparation side of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material according to Claims 2 or 3
Method, it is characterised in that：After intermediate alloy is completely melt, into alloy molten solution, addition weight/mass percentage composition is less than or equal to more than 0
0.20% niobium and/or weight/mass percentage composition is more than 0 erbium for being less than or equal to 0.10%；The niobium and/or erbium are added with intermediate alloy
Enter.
5. a kind of preparation method of highly conductive middle intensity nonheat-treatable aluminum alloy conductor material according to claim 4,
It is characterized in that：Casting and rolling process parameter is：Enter to roll 480 DEG C -530 DEG C of temperature, 200 DEG C -280 DEG C of finishing temperature, total deformation
Amount >=90%.
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| CN105369077B (en) * | 2015-11-27 | 2017-05-10 | 贵州航天风华精密设备有限公司 | Aluminum alloy conductor material and preparation method thereof |
| CN107460378B (en) * | 2017-08-07 | 2019-01-29 | 中南大学 | A kind of Al-Si-Fe-Mg-Cu alloy conductor material and preparation method thereof |
| CN107805748A (en) * | 2017-10-30 | 2018-03-16 | 天津市津和双金属线材有限公司 | A kind of high heat-resisting electrical aluminum rod formula |
| CN108231238B (en) * | 2018-01-09 | 2020-05-12 | 北京有色金属研究总院 | Aluminum alloy cable for railway and preparation method thereof |
| CN109207759B (en) * | 2018-10-31 | 2021-03-19 | 远东电缆有限公司 | Non-aging type high-strength high-conductivity aluminum alloy overhead conductor and preparation method thereof |
| CN109778030B (en) * | 2019-03-19 | 2022-03-04 | 苏州铭恒金属科技有限公司 | Novel aluminum alloy material and preparation thereof |
| CN115011821B (en) * | 2022-04-25 | 2023-05-16 | 昆明理工大学 | High-conductivity aluminum-based alloy and preparation method thereof |
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