CN101412299A - Aluminum alloy composite sheet having long service life - Google Patents
Aluminum alloy composite sheet having long service life Download PDFInfo
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- CN101412299A CN101412299A CNA2008102352438A CN200810235243A CN101412299A CN 101412299 A CN101412299 A CN 101412299A CN A2008102352438 A CNA2008102352438 A CN A2008102352438A CN 200810235243 A CN200810235243 A CN 200810235243A CN 101412299 A CN101412299 A CN 101412299A
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Abstract
The invention provides a long-life aluminum alloy composite thin plate, which at least comprises a core layer and a surface layer, wherein the core layer comprises Al-Mn alloy, and one side or two sides of the core layer are coated with the Al-Si alloy; the Al-Mn alloy of the core layer comprises the components by the following mass percentages: 0.05 to 0.5 weight percent of Si, 0.05 to 0.5 weight percent of Fe, 0.05 to 0.3 weight percent of Cu, 1.0 to 1.6 weight percent of Mn, 0.3 to 0.7 weight percent of Mg, 0.05 to 0.3 weight percent of Zn, and 0.05 to 0.15 weight percent of Cr, and the balance components being Al and inevitable impurities. Through selecting alloy elements preferably and controlling the texture, the prepared aluminum alloy composite thin plate has excellent corrosion resistance on the basis of keeping the alloy to have good mechanical performance, anti-sagging performance and brazing performance, thus the aluminum alloy composite thin plate is very advantageous to production and manufacturing and is a perfect material for producing heat exchanger parts.
Description
Technical field
The present invention relates to a kind of aluminium alloy, relate in particular to a kind of aluminum alloy composite sheet having long service life, belong to the non-ferrous metal technical field.
Background technology
Stand the vibration that produces in very harsh road environment influence, thermal cycle repeatedly and the life cycle in the car heat exchanger use, also often contact with corrosive mediums such as ammonia, hydrogen sulfide, hydride and acid, therefore require car heat exchanger must have good intensity, braze ability, thermal diffusivity, corrosion resistance with aluminium alloy compound plate, band, foil material, and the processing characteristics of good sink-resistance performance and excellence etc.
At present domestic enterprise's aluminium alloy compound plate, band, paper tinsel product category of being produced is less, no matter is output, or quality, bigger gap is arranged with comparing abroad, at aspects such as intensity, corrosion resistance, sink-resistance performances, can't well satisfy instructions for use.The raising that requires along with vehicle operation performance, and the calorize rate of heavy vehicle heat exchanger such as truck improves, and the heat exchanger material therefor is had higher requirement.
Research is arranged by in 3003 alloys, adding 1～2% Zn, or in the cortex alloy, add 1～2% Zn, utilize the Zn element to serve as the decay resistance that sacrificial anode improves heat exchange.But if the Zn too high levels, the fin corrosion excessive velocities can make fin lose radiating effect and reduces its service life.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of aluminum alloy composite sheet having long service life is provided, this aluminum alloy composite sheet is on the basis that keeps characteristics such as excellent mechanical performances, sink-resistance performance, brazing property and processing characteristics, having the superior corrosion resistance energy, is the ideal material that is used to make heat exchanger.
Purpose of the present invention is achieved through the following technical solutions:
A kind of aluminum alloy composite sheet having long service life comprises sandwich layer and cortex at least, and characteristics are: described sandwich layer is the Al-Mn alloy, is coated with the Al-Si alloy in the one or both sides of sandwich layer.
Further, above-mentioned a kind of aluminum alloy composite sheet having long service life, it is characterized in that: the composition quality percentage composition of described sandwich layer Al-Mn alloy is: Si 0.05～0.5wt%, Fe 0.05～0.5wt%, Cu 0.05～0.3wt%, Mn 1.0～1.6wt%, Mg 0.3～0.7wt%, Zn 0.05～0.3wt%, Cr 0.05～0.15wt%, all the other components are Al and unavoidable impurities.
Further, above-mentioned a kind of aluminum alloy composite sheet having long service life, described sandwich layer Al-Mn alloy also contain at least a in Zr, the Ti element, and total content is less than 0.1wt%.
Again further, above-mentioned a kind of aluminum alloy composite sheet having long service life, described Al-Si alloy is selected 4004 alloys or 4343 alloys for use.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
The present invention is preferred by alloying element, keeping alloy to have on the basis of performances such as excellent mechanical performances, sink-resistance performance and brazing property, has the superior corrosion resistance energy.By Microstructure Control, utilize the characteristic of prolate crystal grain to realize significantly improving of corrosion resistance, its decay resistance is better than the existing market like product.This aluminum alloy composite sheet material not only has good service life, also keeps good hot-workability simultaneously, is beneficial to very much the manufacturing, is the ideal material of producing heat exchanger component, and economic benefit and social effect are remarkable.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the big grain structure photo of prolate that the aluminum alloy composite sheet of two-sided coating elongates along rolling direction;
Fig. 2: aluminum alloy composite sheet and commercially available aluminum alloy composite sheet decay resistance comparing result schematic diagram.
The specific embodiment
For satisfying heat exchanger component desired kind of specific character of material, especially to the requirement of decay resistance, the invention provides a kind of aluminum alloy composite sheet having long service life, select the alloy compositions content of optimization, the aluminum alloy composite sheet material that obtains with suitable technology manufacturing is on the basis that keeps characteristics such as excellent mechanical performances, sink-resistance performance, brazing property and processing characteristics, have the superior corrosion resistance energy, combination property is better than the market like product.
A kind of aluminum alloy composite sheet having long service life comprises sandwich layer and cortex at least, is made of two-layer or three layers of aluminium alloy usually, and sandwich layer is the Al-Mn alloy, is coated with the aluminium alloy that is different from sandwich layer in sandwich layer Al-Mn alloy one or both sides, and promptly cortex is the Al-Si alloy.Wherein, the composition quality percentage composition of sandwich layer Al-Mn alloy is: Si 0.05～0.5wt%, Fe 0.05～0.5wt%, Cu 0.05～0.3wt%, Mn 1.0～1.6wt%, Mg 0.3～0.7wt%, Zn 0.05～0.3wt%, Cr 0.05～0.15wt%, all the other components are Al and unavoidable impurities.In addition, sandwich layer Al-Mn alloy also contains at least a in Zr, the Ti element, and total content is less than 0.1wt%.The Al-Si alloy is selected 4004 alloys, 4343 alloys or other alloys for use.The long-life corrosion resistance of this aluminum alloy composite sheet is to realize by the big crystal grain along the rolling direction elongation that exists in core alloys constituent content and the sandwich layer, the user mode of aluminum alloy composite sheet can be H24 annealed state or O annealed state, and there is the big grain structure of prolate that prolongs the rolling direction elongation in sandwich layer Al-Mn alloy.
By founding and deformation technique control, behind the finished products, there is the big grain structure of prolate that elongates along milling method in the core alloy.The prolate crystal grain that exists in the sandwich layer can reduce the number of grain boundaries, reduce in the brazing process Si element in the clad in the diffusion of core and core the Mn element to the diffusion of clad, and can suppress the Al-Mn-Si particle along crystal boundary to the sandwich layer diffusion inside, make and have the subsurface stratum that constitutes by the Al-Mn-Si particle between clad and the sandwich layer, this subsurface stratum can preferentially corrode, and effectively reduces the extent of corrosion of core alloys.
Embodiment 1:
According to the present invention, the selection wherein golden composition of a combination is tested, and the chemical composition of selected alloy is as shown in table 1.
Table 1
Make the aluminum alloy composite sheet that obtains two-sided coating, tissue signature such as Fig. 1 behind this composite sheet finished products.Carry out the decay resistance testing experiment by GB 10124-88, adopt the decay resistance quality of estimating alloy with commercially available similar alloy product comparing result, the gained comparing result is seen shown in Figure 2.
Embodiment 2:
The present embodiment alloying component is identical with table 1.
Make and obtain the aluminum alloy composite sheet that single face coats, its annealing back tissue signature is similar to two-sided metallized aluminum alloy composite sheet.Estimate its decay resistance quality by embodiment 1 method, the gained comparing result is seen Fig. 2.
In sum, the present invention is preferred by alloying element, keeping alloy to have on the basis of performances such as excellent mechanical performances, sink-resistance performance and brazing property, improves the decay resistance of alloy.By Microstructure Control, utilize the raising of the characteristic realization corrosion resistance of prolate crystal grain, its decay resistance is better than the existing market like product.This aluminum alloy composite sheet material not only has good service life, also keep characteristics such as good mechanical performance, sink-resistance performance, brazing property simultaneously, also have good hot-workability, very be beneficial to the manufacturing, be the ideal material of producing heat exchanger component, market prospects are wide.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (4)
1. an aluminum alloy composite sheet having long service life comprises sandwich layer and cortex at least, it is characterized in that: described sandwich layer is the Al-Mn alloy, is coated with the Al-Si alloy in the one or both sides of sandwich layer.
2. a kind of aluminum alloy composite sheet having long service life according to claim 1, it is characterized in that: the composition quality percentage composition of described sandwich layer Al-Mn alloy is: Si 0.05～0.5wt%, Fe 0.05～0.5wt%, Cu 0.05～0.3wt%, Mn 1.0～1.6wt%, Mg 0.3～0.7wt%, Zn0.05～0.3wt%, Cr 0.05～0.15wt%, all the other components are Al and unavoidable impurities.
3. a kind of aluminum alloy composite sheet having long service life according to claim 1 is characterized in that: described sandwich layer Al-Mn alloy also contains at least a in Zr, the Ti element, and total content is less than 0.1wt%.
4. a kind of aluminum alloy composite sheet having long service life according to claim 1 is characterized in that: described Al-Si alloy is selected 4004 alloys or 4343 alloys for use.
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| CNA2008102352438A CN101412299A (en) | 2008-11-13 | 2008-11-13 | Aluminum alloy composite sheet having long service life |
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| CNA2008102352438A CN101412299A (en) | 2008-11-13 | 2008-11-13 | Aluminum alloy composite sheet having long service life |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241170A (en) * | 2010-03-29 | 2011-11-16 | 株式会社神户制钢所 | Aluminum alloy brazing sheet |
| CN102337434A (en) * | 2011-08-18 | 2012-02-01 | 苏州有色金属研究院有限公司 | High-strength high-toughness Al-Mg-Si-Cu wrought aluminum alloy and preparation method thereof |
| CN105779824A (en) * | 2014-12-22 | 2016-07-20 | 格朗吉斯铝业（上海）有限公司 | Aluminum alloy composite and producing method thereof |
| CN105880866A (en) * | 2015-01-15 | 2016-08-24 | 江苏财发铝业股份有限公司 | Heat-resistant aluminum alloy soldering composite material and preparation method thereof |
| CN106926527A (en) * | 2017-01-20 | 2017-07-07 | 无锡市世达精密焊管制造有限公司 | Spiral heat exchanger is used and adds Si, Mg composite plate and preparation method thereof |
| CN108136546A (en) * | 2015-10-05 | 2018-06-08 | 海德鲁铝业钢材有限公司 | Aluminium composite material and its production method in the thermal bonding method of fluxless |
| CN113897519A (en) * | 2021-10-18 | 2022-01-07 | 贵州大学 | Al-Mn-Mg-Si-Ti-Sn casting alloy for realizing vacuum brazing by vacuum die casting and preparation method thereof |
| CN114457262A (en) * | 2022-01-05 | 2022-05-10 | 无锡金洋铝业有限公司 | Seawater corrosion resistant aluminum alloy material |
| CN114771049A (en) * | 2022-04-29 | 2022-07-22 | 无锡金洋铝业有限公司 | Corrosion-resistant aluminum brazing composite plate and preparation method thereof |
-
2008
- 2008-11-13 CN CNA2008102352438A patent/CN101412299A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241170A (en) * | 2010-03-29 | 2011-11-16 | 株式会社神户制钢所 | Aluminum alloy brazing sheet |
| CN102241170B (en) * | 2010-03-29 | 2013-11-06 | 株式会社神户制钢所 | Aluminum alloy brazing sheet |
| CN102337434A (en) * | 2011-08-18 | 2012-02-01 | 苏州有色金属研究院有限公司 | High-strength high-toughness Al-Mg-Si-Cu wrought aluminum alloy and preparation method thereof |
| CN102337434B (en) * | 2011-08-18 | 2013-09-25 | 苏州有色金属研究院有限公司 | High-strength high-toughness Al-Mg-Si-Cu wrought aluminum alloy and preparation method thereof |
| CN105779824A (en) * | 2014-12-22 | 2016-07-20 | 格朗吉斯铝业（上海）有限公司 | Aluminum alloy composite and producing method thereof |
| CN105880866A (en) * | 2015-01-15 | 2016-08-24 | 江苏财发铝业股份有限公司 | Heat-resistant aluminum alloy soldering composite material and preparation method thereof |
| CN108136546A (en) * | 2015-10-05 | 2018-06-08 | 海德鲁铝业钢材有限公司 | Aluminium composite material and its production method in the thermal bonding method of fluxless |
| CN106926527A (en) * | 2017-01-20 | 2017-07-07 | 无锡市世达精密焊管制造有限公司 | Spiral heat exchanger is used and adds Si, Mg composite plate and preparation method thereof |
| CN113897519A (en) * | 2021-10-18 | 2022-01-07 | 贵州大学 | Al-Mn-Mg-Si-Ti-Sn casting alloy for realizing vacuum brazing by vacuum die casting and preparation method thereof |
| CN114457262A (en) * | 2022-01-05 | 2022-05-10 | 无锡金洋铝业有限公司 | Seawater corrosion resistant aluminum alloy material |
| CN114771049A (en) * | 2022-04-29 | 2022-07-22 | 无锡金洋铝业有限公司 | Corrosion-resistant aluminum brazing composite plate and preparation method thereof |
| CN114771049B (en) * | 2022-04-29 | 2024-04-09 | 无锡金洋铝业有限公司 | Corrosion-resistant aluminum brazing composite plate and preparation method thereof |
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Application publication date: 20090422 |