CN105483476A - High-strength, high-conductivity and high-heat-resisting aluminum alloy and preparation method thereof - Google Patents
High-strength, high-conductivity and high-heat-resisting aluminum alloy and preparation method thereof Download PDFInfo
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- CN105483476A CN105483476A CN201610056044.5A CN201610056044A CN105483476A CN 105483476 A CN105483476 A CN 105483476A CN 201610056044 A CN201610056044 A CN 201610056044A CN 105483476 A CN105483476 A CN 105483476A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The invention discloses high-strength, high-conductivity and high-heat-resisting aluminum alloy and a preparation method thereof. The aluminum alloy is prepared from, by mass, 5.2%-6.4% of Zn, 0.5%-1.0% of Mg, 0.8%-1.4% of Sn, 0.3%-1.0% of Si, 0.03% of P or less, 0.02%-0.12% of B, 0.02%-0.13% of V, 0.02%-0.15% of Zr and the balance aluminum. A crucible is placed in a resistance furnace to be heated to 380 DEG C to 420 DEG C, and pure aluminum is added; the temperature is raised to 700 DEG C to 740 DEG C, and slagging off is carried out; the temperature is risen to 750 DEG C to 770 DEG C, pure magnesium and Al-Si intermediate alloy are added for heat preservation, and Al-B intermediate alloy is added for heat preservation; dross is removed, then Al-Zn intermediate alloy, Al-Sn intermediate alloy, Al-P intermediate alloy, Al-V intermediate alloy and Al-Zr intermediate alloy are added, heat preservation is carried out, and the high-strength, high-conductivity and high-heat-resisting aluminum alloy is obtained through refining, standing, casting forming and aging treatment. According to the prepared aluminum alloy for a wire, the strength is larger than 200 MPa, the conductivity is larger than 50% IACS, and the long-term running temperature reaches 140 DEG C. Raw material ingredients are simple, the preparation process is easy to operate, production cost is low, and the aluminum alloy is suitable for industrial production.
Description
Technical field
The present invention relates to technical field of alloy, specifically a kind of high-strength highly-conductive heat-resisting aluminium alloy and preparation method thereof.
Background technology
Alloy is the material with metallic character synthesized by two or more metal and metal or the certain method of nonmetal warp.Generally obtain by fusing into uniform liquid and solidify.The maximum alloy of current application is aluminium alloy.Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, widely applies in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry.The develop rapidly of industrial economy, increasing to the demand of Welded structural part, make the Research on Weldability of aluminium alloy also thereupon deeply.Aluminium alloy density is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, can be processed into various section bar, has excellent electroconductibility, thermal conductivity and corrosion stability, industrially widely uses, and usage quantity is only second to steel.But lower for traditional high-strength line aluminium alloy electric conductivity of wire, thermotolerance is not enough, and heat-resisting line aluminium alloy resists the shortcoming of vertical arc poor performance to manifest gradually.
Summary of the invention
The object of the present invention is to provide high-strength highly-conductive heat-resisting aluminium alloy that a kind of feed composition is simple, preparation technology is easy to operate, production cost is low and preparation method thereof, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:5.2-6.4%, Mg:0.5-1.0%, Sn:0.8-1.4% according to the component of mass percent, Si:0.3-1.0%, P :≤0.03%, B:0.02-0.12%, V:0.02-0.13%, Zr:0.02-0.15%, all the other are aluminium.
As the further scheme of the present invention: described high-strength highly-conductive heat-resisting aluminium alloy, be Zn:5.5-6.0% according to the component of mass percent, Mg:0.6-0.8%, Sn:0.9-1.2%, Si:0.4-0.8%, P :≤0.03%, B:0.03-0.08%, V:0.03-0.1%, Zr:0.03-0.10%, all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 380-420 DEG C, add fine aluminium;
2) resistance furnace is warming up to 700-740 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off;
3) resistance furnace is warming up to 750-770 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 30-60min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 10-30min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 20-50min, every 10min stirs once;
4) resistance furnace is cooled to 700-720 DEG C, takes out crucible, pass into dry argon gas to melt refining 3-8min;
5) again crucible is put into resistance furnace, leave standstill 8-12min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
As the further scheme of the present invention: step 1) in crucible is placed in resistance furnace, be warming up to 400 DEG C.
As the further scheme of the present invention: step 2) in resistance furnace is warming up to 720 DEG C.
As the further scheme of the present invention: step 4) resistance furnace is cooled to 720 DEG C, take out crucible, pass into dry argon gas to melt refining 3-5min.
As the further scheme of the present invention: step 5) in again crucible is put into resistance furnace, leave standstill 10min.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adds Sn, P, B, V and Zr on the basis of high-strength system Al-Mg-Si alloy, utilizes the interaction between each element, reduces impurity content, realizes cleaning molten; Again by refining and ageing treatment, preparing intensity is greater than 200MPa in fact, and electric conductivity is greater than 50%IACS, and long-time running temperature reaches the aluminium alloy used for wire of 140 DEG C.Feed composition is simple, preparation technology is easy to operate, and production cost is low, is suitable for suitability for industrialized production.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:5.2%, Mg:0.5%, Sn:0.8%, Si:0.3%, P:0.03%, B:0.02%, V:0.02%, Zr:0.02% according to the component of mass percent, and all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 380 DEG C, adds fine aluminium.
2) resistance furnace is warming up to 700 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off.
3) resistance furnace is warming up to 750 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 30min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 10min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 20min, every 10min stirs once.
4) resistance furnace is cooled to 700 DEG C, takes out crucible, pass into dry argon gas to melt refining 3min.
5) again crucible is put into resistance furnace, leave standstill 8min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
Embodiment 2
In the embodiment of the present invention, a kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:6.4%, Mg:1.0%, Sn:1.4%, Si:1.0%, P:0.025%, B:0.12%, V:0.13%, Zr:0.15% according to the component of mass percent, and all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 420 DEG C, adds fine aluminium.
2) resistance furnace is warming up to 740 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off.
3) resistance furnace is warming up to 770 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 60min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 30min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 50min, every 10min stirs once.
4) resistance furnace is cooled to 720 DEG C, takes out crucible, pass into dry argon gas to melt refining 8min.
5) again crucible is put into resistance furnace, leave standstill 12min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
Embodiment 3
In the embodiment of the present invention, a kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:5.5%, Mg:0.6%, Sn:0.9%, Si:0.4%, P:0.02%, B:0.03%, V:0.03%, Zr:0.03% according to the component of mass percent, and all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 390 DEG C, adds fine aluminium.
2) resistance furnace is warming up to 710 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off.
3) resistance furnace is warming up to 755 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 40min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 15min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 30min, every 10min stirs once.
4) resistance furnace is cooled to 705 DEG C, takes out crucible, pass into dry argon gas to melt refining 7min.
5) again crucible is put into resistance furnace, leave standstill 9min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
Embodiment 4
In the embodiment of the present invention, a kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:6.0%, Mg:0.8%, Sn:1.2%, Si:0.8%, P:0.02%, B:0.08%, V:0.1%, Zr:0.10% according to the component of mass percent, and all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 410 DEG C, adds fine aluminium.
2) resistance furnace is warming up to 730 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off.
3) resistance furnace is warming up to 765 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 50min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 25min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 40min, every 10min stirs once.
4) resistance furnace is cooled to 715 DEG C, takes out crucible, pass into dry argon gas to melt refining 6min.
5) again crucible is put into resistance furnace, leave standstill 11min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
Embodiment 5
In the embodiment of the present invention, a kind of high-strength highly-conductive heat-resisting aluminium alloy is Zn:5.7%, Mg:0.7%, Sn:1.0%, Si:0.6%, P:0.03%, B:0.05%, V:0.07%, Zr:0.07% according to the component of mass percent, and all the other are aluminium.
The preparation method of described high-strength highly-conductive heat-resisting aluminium alloy, comprises the steps:
1) crucible is placed in resistance furnace, is warming up to 400 DEG C, adds fine aluminium.
2) resistance furnace is warming up to 720 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off.
3) resistance furnace is warming up to 760 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 45min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 20min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 35min, every 10min stirs once.
4) resistance furnace is cooled to 720 DEG C, takes out crucible, pass into dry argon gas to melt refining 4min.
5) again crucible is put into resistance furnace, leave standstill 10min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (7)
1. a high-strength highly-conductive heat-resisting aluminium alloy, is characterized in that, is Zn:5.2-6.4%, Mg:0.5-1.0% according to the component of mass percent, Sn:0.8-1.4%, Si:0.3-1.0%, P :≤0.03%, B:0.02-0.12%, V:0.02-0.13%, Zr:0.02-0.15%, all the other are aluminium.
2. high-strength highly-conductive heat-resisting aluminium alloy according to claim 1, it is characterized in that, be Zn:5.5-6.0%, Mg:0.6-0.8%, Sn:0.9-1.2% according to the component of mass percent, Si:0.4-0.8%, P :≤0.03%, B:0.03-0.08%, V:0.03-0.1%, Zr:0.03-0.10%, all the other are aluminium.
3. a preparation method for the high-strength highly-conductive heat-resisting aluminium alloy as described in as arbitrary in claim 1-2, is characterized in that, comprise the steps:
1) crucible is placed in resistance furnace, is warming up to 380-420 DEG C, add fine aluminium;
2) resistance furnace is warming up to 700-740 DEG C, after fine aluminium all melts, takes bath surface oxidation sludge off;
3) resistance furnace is warming up to 750-770 DEG C, adds preheated pure magnesium and Al-Si master alloy, and be incubated 30-60min, every 10min stirs once; Add preheated Al-B master alloy afterwards, and be incubated 10-30min, every 10min stirs once; Add preheated Al-Zn master alloy, Al-Sn master alloy, Al-P master alloy, Al-V master alloy and Al-Zr master alloy after taking off removing dross, and be incubated 20-50min, every 10min stirs once;
4) resistance furnace is cooled to 700-720 DEG C, takes out crucible, pass into dry argon gas to melt refining 3-8min;
5) again crucible is put into resistance furnace, leave standstill 8-12min, the oxide compound of removing bath surface, then cast molding, then carry out ageing treatment and namely obtain high-strength highly-conductive heat-resisting aluminium alloy.
4. the preparation method of high-strength highly-conductive heat-resisting aluminium alloy according to claim 3, is characterized in that, in step 1), crucible is placed in resistance furnace, is warming up to 400 DEG C.
5. the preparation method of high-strength highly-conductive heat-resisting aluminium alloy according to claim 3, is characterized in that, step 2) in resistance furnace is warming up to 720 DEG C.
6. the preparation method of high-strength highly-conductive heat-resisting aluminium alloy according to claim 3, is characterized in that, resistance furnace is cooled to 720 DEG C by step 4), takes out crucible, passes into dry argon gas to melt refining 3-5min.
7. the preparation method of high-strength highly-conductive heat-resisting aluminium alloy according to claim 3, is characterized in that, again crucible is put into resistance furnace in step 5), leaves standstill 10min.
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Cited By (2)
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| CN106834834A (en) * | 2017-02-27 | 2017-06-13 | 东莞市铝美铝型材有限公司 | A kind of use for electronic products high-strength aluminum alloy and preparation method thereof |
| CN113430429A (en) * | 2021-06-01 | 2021-09-24 | 烟台南山学院 | Multi-element heat-deformation-resistant rare earth aluminum alloy and preparation method thereof |
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| CN106834834A (en) * | 2017-02-27 | 2017-06-13 | 东莞市铝美铝型材有限公司 | A kind of use for electronic products high-strength aluminum alloy and preparation method thereof |
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| CN113430429A (en) * | 2021-06-01 | 2021-09-24 | 烟台南山学院 | Multi-element heat-deformation-resistant rare earth aluminum alloy and preparation method thereof |
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Application publication date: 20160413 |