CN103757494A - Al-Fe-Cu-Mg-Ti aluminum alloy for an automobile wire, and a wiring harness thereof - Google Patents
Al-Fe-Cu-Mg-Ti aluminum alloy for an automobile wire, and a wiring harness thereof Download PDFInfo
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Abstract
The invention discloses an Al-Fe-Cu-Mg-Ti aluminum alloy for an automobile wire, a preparation method thereof, and an automobile wiring harness prepared by the Al-Fe-Cu-Mg-Ti aluminum alloy. The Al-Fe-Cu-Mg-Ti aluminum alloy for the automobile wire comprises following components in percentage by weight: 0.2-1.4% of Fe, 0.01-0.5% of Cu and Mg, 0.001-0.2% of Ti, and the balance of Al and inevitable impurities. The mechanical strength and tensile performance of the alloy can be improved by adding the Fe element, the anti-creepage property and fatigue resistance property can be obviously enhanced through the Fe, the added Ti can play a role on the micronization material of ingots in casting, the processing tensile property of the alloy can be enhanced, and the anti-creepage property can be improved, especially the stability with a connecting terminal can be enhanced.
Description
Technical field
The present invention relates to a kind of wire harness that can be used as store battery cable, wire harness or the engine cable in mobile vehicle, belong to field of aluminum alloys.
Background technology
In world wide, automobile industry development is rapid at present, automotive industry not only becomes the U.S., the mainstay industry of the developed countries such as Japan, also become the mainstay industry of some developing countries including China, as the automotive line of one of important auxiliary products of automobile, no matter in scale output or kind demand, all there are good market outlook.
Automobile is to miniaturization, lightweight future development simultaneously, and the pilot circuit of various electronicss increases, and increase the distribution position in motor vehicle, in order to reach energy-saving and cost-reducing object, requires the performance future development of low tension cables for automobiles to minification.Therefore,, for weight reduction, attempted the aluminium electric wire that uses conductor to be made by aluminum.
The aluminium electric wire that conductor is made by alumina-base material is due to lightweight and excellent electric conductivity, thereby routinely for the power industry field of overhead electric power transmission line is set.Aluminium alloy more and more for the conductor of aluminium electric wire to improve intensity and resistance to bend(ing), day by day deficient along with copper resource in addition, and the content of aluminium is very abundant, with aluminium substitution copper, received investigator's concern, therefore aluminium alloy becomes the focus of research as cable conductor.
For example, Japanese Patent Laid-Open 2006-19163 communique discloses a kind of aluminium conductor, it is the twisted wire by aluminium alloy wires twisted is made, the Si of the Fe that described aluminium alloy wires contains 1.10-1.50 quality %, the Mg of 0.03-0.25 quality %, 0.02-0.06% quality %, surplus is Al and inevitable impurity.A kind of hard wire drawing line during aluminium alloy wires that this piece of patent mentioned, thus although described wire intensity increases, extend rate variance, and this causes resistance to bend(ing) and shock-resistance to decline.
Japanese Patent car aluminum electric wire and manufacture method thereof (application number: the conductor providing 200820111739.2) has tensile strength more than 110MPa, more than 15% elongation at break and specific conductivity more than 58%IACS, but this piece of patent do not embody the good effect of improving for the creep resistance of conductor.
But as the conductor of the electric wiring body of moving body, wherein a most important problem is exactly the requirement to resistance to creep properties.Because approximately 140 ℃ of the envrionment temperatures of the easy creep of aluminium, and the thermal environment of moving body such as the engine chamber of automobile, drive and just easily reach in full summer this temperature by these parts of engine.In addition, the electric wiring body electric wire of moving body is riveted on terminal, if there is creep, has the hidden danger coming off.
Therefore, the exploitation of the aluminium conductor of resistance to creep properties excellence is necessary.In addition, for preventing infinitely repeatedly under repeated load effect, the conductor of the electric wiring body as moving body being damaged, the raising of resistance to fatigue is also necessary.
Summary of the invention
The object of the present invention is to provide a kind of light weight, have excellent electric conductivity, automotive line Al-Fe-Cu-Mg-Ti aluminium alloy of tensile strength, processibility, creep-resistant property and preparation method thereof and preparation thereof and automotive wire bundle.
Above-mentioned purpose realizes by following scheme:
A kind of automotive line Al-Fe-Cu-Mg-Ti aluminium alloy, comprises following composition:
Fe, content is 0.2-1.4wt%,
Cu+Mg, content is 0.01-0.5wt%,
Ti, content is 0.001-0.2wt%,
Surplus is Al and inevitable impurity.
Described alloy also contains the Si that is no more than 0.1wt%.
The RE that also contains 0.1-0.3wt% in described alloy, wherein Ce, La account for the more than 50% of total amount of rare earth.
Described aluminium alloy resistance rate is not more than 0.028264 Ω mm
2/ m, elongation at break is not less than 10%, and under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 1 × 10
-3(%/h) or lower, and the tired bending of 90 degree number of times reach 30 or higher.
The preparation method of Al-Fe-Cu-Mg-Ti aluminium alloy for described automotive line, forms aluminium alloy rod by melting, casting, rolling.
The described automotive wire bundle that utilizes automotive line Al-Fe-Cu-Mg-Ti aluminium alloy and make, forms aluminium alloy rod by melting, casting, rolling, then through drawing, bundle strand, the softening aluminium alloy conductor core that forms, conductor thread core extrudes one deck insulation outward and makes.
Described conductor thread core is formed by the filament tow strand of 10-1000 root 0.2-0.5mm.
Described insulation layer extrudes one deck sheath outward; Described insulation and sheath material adopt polyvinyl chloride, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene or polypropylene material.
Under can be used for-40-150 of described automotive wire bundle ℃ environment.
Described automotive wire bundle can be used as store battery cable, wire harness or the engine cable in moving body carrier.
Method for the preparation of aluminium alloy of the present invention comprises the following steps:
A) by molten aluminium alloy is cast and is obtained cast material: add the melting processing at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Cu ingot, Al-Ti ingot or pure metal ingot by formula rate; 680 ℃ of following temperature are cast;
B) ingot casting step a) being obtained carries out solution treatment and ageing treatment, rerolls and makes rod of metal alloy;
C) rod of metal alloy step b) being rolled into is through cold-drawn, stranded, softening, and extruded insulation is made alloy wiring.
Preferably, for the preparation of the method for alloy wiring of the present invention, comprise the following steps:
A) by molten aluminium alloy is cast and is obtained cast material: add the melting processing at 700 ℃ or higher temperature of Al ingot, Al-Fe ingot, Al-Mg ingot, Al-Cu ingot, Al-Ti ingot, Al-RE ingot or pure metal ingot by formula rate; 680 ℃ of following temperature are cast;
B) ingot casting step a) being obtained carries out solution treatment and ageing treatment, rerolls and makes rod of metal alloy;
C) rod of metal alloy step b) being rolled into is through cold-drawn, stranded, softening, and extruded insulation is made alloy wiring.
After conductor thread core annealing of the present invention, compressed with one heart, by the filament tow strand of 10～1000 0.2mm～0.5mm, formed.
Beneficial effect of the present invention is: the preferred Fe of the present invention, Cu, Mg, Ti are as the interpolation element of alloy, by adding Fe element, can improve physical strength and the tensile property of alloy, Fe can also significantly improve high-temperature creep resistance, and carry heavy alloyed anti-fatigue performance, adding of Cu has certain solid solution strengthening effect, in addition the CuAl2 of Precipitation has obvious ageing strengthening effect, in alloy, copper content is at 0.01%-0.3% optimum, if exceed this scope, can weaken its timeliness strengthening effect and corrosion stability thereof.Add and the silicon of Mg can form aluminium silicon magnesium and be associated gold, strengthening phase is MgSi, can improve alloy strength, then excessive Mg can make alloy become fragile, micro-be pulled through journey in wire rod easy fracture, therefore, by being added within the scope of 0.01%-0.5% of reasonably combined Cu, Mg, can, when carrying heavy alloyed intensity and high temperature creep property, improve its anti-fatigue performance.
Ti be added in founding time the miniaturization material of ingot bar is worked, carry heavy alloyed processing tensile property, and improve creep-resistant property, particularly improve and the stability of splicing ear.
The present invention has done restriction to the content of Si, is because too much Si can cause tensile property to reduce, and have influence on the processing characteristics of cable, and may reduce the tired bending property of conductor, and too much Si also can reduce electrical property.
In the present invention, Fe content is 0.2-1.4wt%, Cu+Mg content is 0.01-0.05wt%, Ti content is 0.001-0.2wt%, and content is no more than the Si of 0.1wt% and the RE that contains 0.1-0.3wt%, wherein Ce, La accounts for the more than 50% of total amount of rare earth, by such formulation alloy formula, both can improve the performance of alloy, be unlikely to again the performance of the alloy that too much amount can worsen, particularly electrical property and extension property, by rational proportion relation, well ensure the Performance Match of alloy, the preferred RE element of the present invention, wherein Ce, La account in RE total content more than 50%, rare earth can significantly improve the electrical property of alloy, middle-weight rare earths of the present invention adds in aluminium alloy, while making aluminum alloy melt casting, increase constitutional supercooling, crystal grain thinning, reduce secondary intergranular distance, reduce the gas in alloy and be mingled with, and make to be mingled with and be tending towards mutually nodularization.Also can reduce smelt surface tension, increase mobility, be conducive to be cast into ingot, processing performance is had to obvious impact, can also play the effect that improves the tired bending property of Alloy Anti, extended the work-ing life of cable, preferably Ce and La, be because these two kinds of elements in the present invention effect compared with other rare earth elements, to improve effect more obvious.Simultaneously aluminum alloy materials by melting, casting, solid solution and ageing treatment, rolling technology after, make aluminium alloy resistance rate be not more than 0.028264 Ω mm
2/ m, elongation at break is not less than 10%, and under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 1 × 10
-3(%/h) or lower, and the tired bending of 90 degree number of times reach 30 or higher.
The automotive wire bundle being prepared from by the present invention, both realized as the necessary electric property of conductor, overcome again the deficiency of aluminium alloy as processing characteristics, creep-resistant property and the anti-fatigue performance aspect of the existence of automotive wire bundle conductor, and realized the desired lightweight problem as automotive wire bundle, aspect technical economic benefit, have very important significance.
Embodiment
To the technical scheme in the embodiment of the present invention be clearly and completely described below, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu+Mg | Ti | Si | RE | Al |
| Weight (Kg) | 2 | 0.1 | 0.01 | / | / | 997.89 |
| Weight percent (%) | 0.2 | 0.01 | 0.001 | / | / | 99.789 |
In above-mentioned aluminum alloy materials, be preferably added with a certain amount of Ti, Ti be added in founding time the miniaturization material of ingot bar is worked, carry heavy alloyed processing tensile property, and improve creep-resistant property, particularly improve and the stability of splicing ear.Preferably add a certain amount of Cu, have certain solid solution strengthening effect, in addition the CuAl of Precipitation
2have obvious ageing strengthening effect, in alloy, copper content, at 0.01%-0.3% optimum, if exceed this scope, can weaken its timeliness strengthening effect and corrosion stability thereof.Add and the silicon of Mg can form aluminium silicon magnesium and be associated gold, strengthening phase is MgSi, can improve alloy strength, then excessive Mg can make alloy become fragile, micro-be pulled through journey in wire rod easy fracture, therefore, by being added within the scope of 0.01%-0.5% of reasonably combined Cu, Mg, can, when carrying heavy alloyed intensity and high temperature creep property, improve its anti-fatigue performance.
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy is by material, and after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy resistance rate obtaining is 0.028034 Ω mm
2/ m, electric conductivity 61.5%IACS, elongation at break is 18%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.94 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 31.
Embodiment 2
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
In above-mentioned aluminum alloy materials, content by Si compares, and appropriate Si is improved the effect of recrystallization temperature and crystal grain thinning, exceedes certain content and can reduce its conductivity, and in implementation process, find the too much sample easy fracture in drawing process of Si content.
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy is by material, and after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy resistance rate of the sample 1 obtaining is 0.027853 Ω mm
2/ m, electric conductivity 61.9%IACS, elongation at break is 16%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.93 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 32; The aluminium alloy resistance rate of sample 2 is 0.030354 Ω mm
2/ m, electric conductivity 56.8%IACS, elongation at break is 8%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 1.25 × 10
-3(%/h), the tired bending of 90 degree number of times reaches 25.Therefore, in the technical program, Si content is defined as and is not more than 0.1wt%.
Embodiment 3
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu+Mg | Ti | Si | RE | Al |
| Weight (Kg) | 12.0 | 5.0 | 2.0 | 0.50 | 2.5 | 978.00 |
| Weight percent (%) | 1.20 | 0.50 | 0.20 | 0.05 | 0.25 | 97.80 |
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy is by material, and after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy resistance rate obtaining is 0.027237 Ω mm
2/ m, electric conductivity 63.3%IACS, elongation at break is 17%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.84 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 35.
Embodiment 4
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu+Mg | Ti | Si | RE | Al |
| Weight (Kg) | 8.0 | 4.0 | 1.0 | 0.70 | 2.3 | 984.00 |
| Weight percent (%) | 0.80 | 0.40 | 0.10 | 0.07 | 0.23 | 98.40 |
In above-mentioned aluminum alloy materials, preferably add a certain amount of RE element, wherein Ce, La account in RE total content more than 50%, rare earth can significantly improve the electrical property of alloy, and middle-weight rare earths of the present invention adds in aluminium alloy, increases constitutional supercooling while making aluminum alloy melt casting, crystal grain thinning, reduce secondary intergranular distance, reduce the gas in alloy and be mingled with, and make to be mingled with and be tending towards mutually nodularization.Also can reduce smelt surface tension, increase mobility, be conducive to be cast into ingot, processing performance is had to obvious impact, can also play the effect that improves the tired bending property of Alloy Anti, extended the work-ing life of cable, preferably Ce and La, be because these two kinds of elements in the present invention effect compared with other rare earth elements, to improve effect more obvious.
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy is by material, and after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy resistance rate obtaining is 0.027194 Ω mm
2/ m, electric conductivity 63.4%IACS, elongation at break is 15%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.84 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 37.
Embodiment 5
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu+Mg | Ti | Si | RE | Al |
| Weight (Kg) | 12 | 4.8 | 1.2 | 0.40 | 1.6 | 980.00 |
| Weight percent (%) | 1.2 | 0.48 | 0.12 | 0.04 | 0.16 | 98.00 |
In above-mentioned aluminum alloy materials, preferably add a certain amount of RE element, wherein Ce, La account in RE total content more than 60%, rare earth can significantly improve the electrical property of alloy, and middle-weight rare earths of the present invention adds in aluminium alloy, increases constitutional supercooling while making aluminum alloy melt casting, crystal grain thinning, reduce secondary intergranular distance, reduce the gas in alloy and be mingled with, and make to be mingled with and be tending towards mutually nodularization.Also can reduce smelt surface tension, increase mobility, be conducive to be cast into ingot, processing performance is had to obvious impact, can also play the effect that improves the tired bending property of Alloy Anti, extended the work-ing life of cable, preferably Ce and La, be because these two kinds of elements in the present invention effect compared with other rare earth elements, to improve effect more obvious.
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy is by material, and after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy resistance rate obtaining is 0.027498 Ω mm
2/ m, electric conductivity 62.7%IACS, elongation at break is 15%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.56 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 32.
Embodiment 6
A kind of automotive line aluminium alloy, the weight percent following (gross weight: 1T) of component and each component:
| Component | Fe | Cu+Mg | Ti | Si | RE | Al |
| Weight (Kg) | 14.0 | 3.0 | 0.87 | 0.5 | 2.0 | 979.63 |
| Weight percent (%) | 1.4 | 0.3 | 0.087 | 0.05 | 0.2 | 97.963 |
In above-mentioned aluminum alloy materials, preferably add a certain amount of RE element, wherein Ce, La account in RE total content more than 60%, rare earth can significantly improve the electrical property of alloy, and middle-weight rare earths of the present invention adds in aluminium alloy, increases constitutional supercooling while making aluminum alloy melt casting, crystal grain thinning, reduce secondary intergranular distance, reduce the gas in alloy and be mingled with, and make to be mingled with and be tending towards mutually nodularization.Also can reduce smelt surface tension, increase mobility, be conducive to be cast into ingot, processing performance is had to obvious impact, can also play the effect that improves the tired bending property of Alloy Anti, extended the work-ing life of cable, preferably Ce and La, be because these two kinds of elements in the present invention effect compared with other rare earth elements, to improve effect more obvious.
Apply above-mentioned aluminum alloy materials and prepare the method for aluminium alloy core, concrete steps are as follows:
A, founding: add according to the above ratio al alloy component, after melting is processed at 730 ℃, at 670 ℃, carry out ingot casting, then be rolled into rod of metal alloy through solution treatment and ageing treatment, the ageing treatment here is preferably carried out at 140 ℃ or higher temperature,
B, wire drawing: the rod of metal alloy being obtained by a is carried out to temperature 150-180 ℃, and the process annealing of 4-6 hour, when this is the intensity in order to guarantee alloy, improves its tensile property, resistance to bend(ing) energy, strengthens alloy plasticity-, improves subsequent technique efficiency.Here we by rod of metal alloy wire drawing the alloy filaments to Ф 0.2mm.
C, annealing: by after the filament tow strand being made by b in annealing furnace, at 280-320 ℃, be incubated 5-8 hour, annealing time reaches after requirement, the time of being down to 100 ℃ from annealing temperature is more than 15 minutes, like this under treatment condition, Ti has crystal grain thinning, promotes the alloy conductor effect that recovers its electroconductibility in annealing process, and the Fe of sosoloid form amount is few in addition, the conductivity excellence of the conductor that makes to anneal.
Above-mentioned aluminium alloy passes through material, after melting, casting, solid solution and ageing treatment, rolling technology, the aluminium alloy electric conductivity 61.4%IACS obtaining, elongation at break is 18%, under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 0.85 × 10
-3(%/h), and the tired bending of 90 degree number of times reach 36.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing, be equal to replacement etc., within all should being included in protection scope of the present invention in protection scope of the present invention.
Claims (8)
1. an automotive line Al-Fe-Cu-Mg-Ti aluminium alloy, is characterized in that: comprise following composition:
Fe, content is 0.2-1.4wt%,
Cu+Mg, content is 0.01-0.5wt%,
Ti, content is 0.001-0.2wt%,
Surplus is Al and inevitable impurity.
2. a kind of automotive line Al-Fe-Cu-Mg-Ti aluminium alloy according to claim 1, is characterized in that: described alloy also contains the Si that is no more than 0.1wt%.
3. a kind of automotive line Al-Fe-Cu-Mg-Ti aluminium alloy according to claim 1, is characterized in that: in described alloy, also contain the RE of 0.1-0.3wt%, wherein Ce, La account for the more than 50% of total amount of rare earth.
4. according to claim 1(, deleted or 2 or 3) described a kind of automotive line Al-Fe-Cu-Mg-Ti aluminium alloy, it is characterized in that: described aluminium alloy resistance rate is not more than 0.028264 Ω mm
2/ m, elongation at break is not less than 10%, and under 140 ℃ of temperature, 120MPa stress condition, the average creep rate of 1-100 hour is 1 × 10
-3(%/h) or lower, and the tired bending of 90 degree number of times reach 30 or higher.
5. an automotive wire bundle that utilizes the aluminium alloy described in claim 4 and make, is characterized in that: described conductor thread core is formed by the filament tow strand of 10-1000 root 0.2-0.5mm.
6. wire harness according to claim 5, is characterized in that: described insulation layer extrudes one deck sheath outward, and insulation and sheath material adopt polyvinyl chloride, polyvinyl chloride-butyronitrile polymkeric substance, polymeric amide, fluorinated ethylene propylene or polypropylene material.
7. wire harness according to claim 6, is characterized in that: under can be used for-40-150 of described automotive wire bundle ℃ environment.
8. wire harness according to claim 7, is characterized in that: described automotive wire bundle can be used as store battery cable, wire harness or the engine cable in moving body carrier.
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| CN201310733450.7A CN103757494A (en) | 2013-12-26 | 2013-12-26 | Al-Fe-Cu-Mg-Ti aluminum alloy for an automobile wire, and a wiring harness thereof |
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|---|---|---|---|
| CN201310733450.7A CN103757494A (en) | 2013-12-26 | 2013-12-26 | Al-Fe-Cu-Mg-Ti aluminum alloy for an automobile wire, and a wiring harness thereof |
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