CN102773626A - Corrosion-resistant aluminum alloy soldering material - Google Patents
Corrosion-resistant aluminum alloy soldering material Download PDFInfo
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- CN102773626A CN102773626A CN2012102402556A CN201210240255A CN102773626A CN 102773626 A CN102773626 A CN 102773626A CN 2012102402556 A CN2012102402556 A CN 2012102402556A CN 201210240255 A CN201210240255 A CN 201210240255A CN 102773626 A CN102773626 A CN 102773626A
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Abstract
The invention relates to a soldering material, in particular to a corrosion-resistant aluminum alloy soldering material. The material contains, by weight, the following components: 1.0-5.0% of Si, 0.6-1.8% of Mn, 0.15-0.35% of Fe, 0.1-0.3% of Sr, 1-2% of Cu, 1.5-2.5% of Cr, 0.05-0.2% of Ti and Al in balance. The inventive corrosion-resistant aluminum alloy soldering material is excellent in corrosion resistance and good in post-soldering hardness.
Description
Technical field
The present invention relates to brazing material, especially a kind of anticorrosion aluminium brazing material.
Background technology
Soldering is generally used for assembling the labyrinth that is made by the aluminum or aluminum alloy parts, for example heat-exchange devices such as radiator, condenser, oil cooler.These heat-exchange devices receive the serious erosion of external corrosion property medium through regular meeting; As the aluminium alloy brazing material that constitutes these heat-exchange device important component parts; Hardness must possess simultaneously after excellent corrosion resistance and the good soldering, yet does not occur such aluminium alloy brazing material as yet in the prior art.
CN 100503134C discloses a kind of lithium and aluminium alloy brazing material of calcic not of being substantially free of, and it has the following composition of representing with weight %: Si 5.0-14.0; Fe 0.1-0.7; Mn 0.2-1.5; Mg maximum 2.0; Zn maximum 1.0; Optional wetting agent and surplus Al and the unavoidable impurities of 1 weight % at the most as alloy element.
CN 1100889C discloses the aluminium alloy that is used for brazed assembly of a kind of, plate or extrusion form, and it has following composition (wt.%): Si＜0.15, and Mn 0.7-1.5, Mg is the highest by 0.8; Cu 0.5-1.5, Fe＜0.4, Cr＜0.30, Ti＜0.30; V＜0.30, Zr＜0.30, other element every kind＜0.05; Total amount＜0.15, surplus be aluminium and, said aluminium alloy provides with aging state.
CN 100581700C discloses a kind of aluminum alloy strip or sheet that is used for solder brazing, and it comprises the yttrium of at least 80 weight % aluminium and 0.01-0.5% and/or the bismuth of 0.05-0.5%, and this band or sheet are coated with hard soldering alloys at least one face.Said band or sheet are used for the production of the product of fluxless welding.
Summary of the invention
The object of the invention is the deficiency to prior art, and a kind of anticorrosion aluminium brazing material is provided, and it possesses hardness after splendid corrosion resistance and the good soldering simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si 1.0-5.0wt%, Mn 0.6-1.8wt%; Fe 0.15-0.35wt%; Sr 0.1-0.3wt%, Cu 1-2wt%, Cr 1.5-2.5wt%; Ti 0.05-0.2wt%, surplus Al.
The amount of said Si is selected in a usual manner, to provide alloy required brazing property.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Si is 1.0-5.0wt%, for example can be 1.0-3.0wt%, 1.2-2.5wt%, 1.5-4.0wt%, 2.0-3.5wt%; 2.7-5.0wt%, 1.0wt%, 1.1wt%, 1.5wt%, 1.8wt%, 2.0wt%; 2.3wt%, 2.5wt%, 2.75wt%, 3.0wt%, 3.05wt%; 3.4wt%, 3.5wt%, 3.64wt%, 3.9wt%, 4.0wt%; 4.4wt%, 4.5wt%, 4.68wt%, 4.8wt%, 5.0wt%; Be preferably 2.0-4.0wt%; Most preferably be 2.5-3.5wt%.
Said Mn is for obtaining the main alloy element that desired corrosion resistance and strength level are added.Too much or the very few corrosion resistance that all is unfavorable for improving brazing material of the amount of Mn.And in the coating or packing layer that contain higher Si content, for the corrosivity of improving the brazing material that solidifies once more in the brazing product, Mn can play significant effect.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Mn is 0.6-1.8wt%, for example can be 0.6-1.0wt%, 0.7-1.5wt%, 0.9-1.2wt%, 1.0-1.6wt%; 1.2-1.8wt%, 0.6wt%, 0.71wt%, 0.85wt%, 0.9wt%, 1.0wt%; 1.03wt%, 1.15wt%, 1.2wt%, 1.25wt%, 1.3wt%; 1.4wt%, 1.44wt%, 1.5wt%, 1.52wt%, 1.58wt%; 1.6wt%, 1.65wt%, 1.7wt%, 1.76wt%, 1.8wt%; Be preferably 0.8-1.6wt%; Most preferably be 1.0-1.4wt%.
Said Fe exists in all known commodity aluminium alloys, and in anticorrosion aluminium brazing material according to the present invention, Fe is not a kind of desired alloying element and deliberately adding, and the amount of Fe mainly relies on the alloy material source.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Fe is 0.15-0.35wt%, for example can be 0.15-0.25wt%, 0.18-0.28wt%, 0.2-0.25wt%, 0.22-0.3wt%; 0.21-0.35wt%, 0.15wt%, 0.16wt%, 0.17wt%, 0.18wt%, 0.19wt%; 0.20wt%, 0.21wt%, 0.22wt%, 0.23wt%, 0.24wt%, 0.25wt%; 0.26wt%, 0.27wt%, 0.28wt%, 0.29wt%, 0.30wt%; 0.31wt%, 0.32wt%, 0.33wt%, 0.34wt%, 0.35wt%; Be preferably 0.2-0.3wt%; Most preferably be 0.22-0.28wt%.
Said Sr adds in the brazing material on a small quantity can improve corrosion resistance.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Sr is 0.1-0.3wt%, for example can be 0.1-0.2wt%, 0.12-0.15wt%, 0.17-0.24wt%, 0.19-0.22wt%; 0.21-0.3wt%, 0.1wt%, 0.11wt%, 0.15wt%, 0.17wt%, 0.18wt%; 0.2wt%, 0.21wt%, 0.22wt%, 0.23wt%, 0.24wt%, 0.25wt%; 0.26wt%, 0.27wt%, 0.28wt%, 0.29wt%, 0.3wt%; Be preferably 0.15-0.25wt%; Most preferably be 0.18-0.22wt%.
Intensity said Cu can improve soldering when content is higher after.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Cu is 1-2wt%, for example can be 1.0-1.5wt%, 1.2-1.6wt%, 1.3-1.4wt%, 1.25-1.75wt%; 1.8-2.0wt%, 1.0wt%, 1.01wt%, 1.1wt%, 1.16wt%, 1.2wt%; 1.25wt%, 1.3wt%, 1.39wt%, 1.4wt%, 1.45wt%; 1.5wt%, 1.52wt%, 1.6wt%, 1.64wt%, 1.7wt%; 1.78wt%, 1.8wt%, 1.83wt%, 1.9wt%, 2.0wt%; Be preferably 1.2-1.8wt%; Most preferably be 1.3-1.5%.
Said Cr can improve intensity and the sagging resistance after the soldering.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Cr is 1.5-2.5wt%, for example can be 1.5-2.0wt%, 1.7-2.3wt%, 1.8-2.2wt%, 1.6-1.9wt%, 2.1-3.0wt%; 1.5wt%, 1.51wt%, 1.57wt%, 1.6wt%, 1.65wt%, 1.7wt%, 1.8wt%; 1.95wt%, 2.0wt%, 2.05wt%, 2.1wt%, 2.12wt%, 2.2wt%, 2.3wt%; 2.36wt%, 2.4wt%, 2.5wt%, 2.58wt%, 2.6wt%, 2.65wt%; 2.7wt%, 2.8wt%, 2.84wt%, 2.9wt%, 2.95wt%, 3.0wt%; Be preferably 1.6-2.3wt%; Most preferably be 1.8-2.1wt%.
Said Ti is that brazing material provides the tiny and uniform matrix; This not only can improve the intensity of aluminium alloy brazing material; Can also guarantee that aluminium alloy carries out uniform plastic deformation, avoid stress or strain in the deformation process to concentrate, help the raising of aluminium alloy toughness.
In anticorrosion aluminium brazing material of the present invention, the percentage by weight of said Ti is 0.05-0.2wt%, for example can be 0.05-0.1wt%, 0.07-0.15wt%, 0.09-0.18wt%, 0.11-0.13wt%; 0.12-0.2wt%, 0.05wt%, 0.06wt%, 0.07wt%, 0.08wt%, 0.09wt%; 0.1wt%, 0.11wt%, 0.12wt%, 0.13wt%, 0.14wt%, 0.15wt%; 0.16wt%, 0.17wt%, 0.18wt%, 0.19wt%, 0.2wt%; Be preferably 0.08-0.18wt%; Most preferably be 0.1-0.15wt%.
In sum, optimized technical scheme of the present invention is:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si 2.0-4.0wt%, Mn 0.8-1.6wt%; Fe 0.2-0.3wt%; Sr 0.15-0.25wt%, Cu 1.2-1.8wt%, Cr 1.6-2.3wt%; Ti 0.08-0.18wt%, surplus Al.
The most preferred technical scheme of the present invention is:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si 2.5-3.5wt%, Mn 1.0-1.4wt%; Fe 0.22-0.28wt%; Sr 0.18-0.22wt%, Cu1.3-1.5wt%, Cr 1.8-2.1wt%; Ti 0.1-0.15wt%, surplus Al.
Preferably, be substantially free of other impurity in the anticorrosion aluminium brazing material of the present invention.Term " is substantially free of " to refer to and does not have the amount of adding significant this component in the alloy composition wittingly to here; Level for example＜0.005%; More preferably do not have, be appreciated that in desired final products, to have subsidiary element of trace and/or impurity.
" comprising " of the present invention, mean it except that said component, can also contain other components, these other components are given said anticorrosion aluminium brazing material with different characteristic.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... process ".No matter which kind of composition anticorrosion aluminium brazing material according to the invention comprises, the percentage by weight sum of said anticorrosion aluminium brazing material is 100%.
Further, the present invention also provides the product that is suitable for soldering, and it has the matrix (core) and the clad lower than said matrix of the fusing point on said matrix of aluminum or aluminum alloy, and wherein clad is to be processed by anticorrosion aluminium brazing material of the present invention.
Compared with prior art, anticorrosion aluminium brazing material of the present invention possesses hardness after splendid corrosion resistance and the good soldering simultaneously.
Below in conjunction with embodiment the present invention is done further explain, but each following embodiment only is a simple and easy example of the present invention, does not represent or limit rights protection scope of the present invention that interest field of the present invention is as the criterion with claims.
The specific embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical case of the present invention but non-restrictive example is following:
Embodiment 1:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si3.5wt%, Mn1.0wt%, Fe0.28wt%, Sr0.18wt%, Cu1.5wt%, Cr1.8wt%, Ti0.15wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 575 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 450MPa after the soldering.
Embodiment 2:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si2.5wt%, Mn1.4wt%, Fe0.22wt%, Sr0.22wt%, Cu1.3wt%, Cr2.1wt%, Ti0.1wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 576 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 445MPa after the soldering.
Embodiment 3:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si4.0wt, Mn0.8wt%, Fe0.3wt%, Sr0.15wt%, Cu1.8wt%, Cr1.6wt%, Ti0.18wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 574 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 440MPa after the soldering.
Embodiment 4:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si2.0wt%, Mn1.6wt%, Fe0.2wt%, Sr0.25wt%, Cu1.2wt%, Cr2.3wt%, Ti0.08wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 574.5 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 438MPa after the soldering.
Embodiment 5:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si 5.0wt%, Mn 0.6wt%, Fe 0.35wt%, Sr 0.1wt%, Cu 2wt%, Cr 1.5wt%, Ti 0.2wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 575.5 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 430MPa after the soldering.
Embodiment 6:
A kind of anticorrosion aluminium brazing material, it comprises the following component of representing with percentage by weight wt%: Si 1.0wt%, Mn 1.8wt%, Fe 0.15wt%, Sr 0.3wt%, Cu 1wt%, Cr 2.5wt%, Ti 0.05wt%, surplus Al.
The melt temperature (beginning fusion) of the anticorrosion aluminium brazing material that present embodiment obtains is 572 ℃, is exposed in the NaCl solution of 3wt%, and 24h does not see corrosion; 0.2% yield strength is 431MPa after the soldering.
All expression constituent contents that in specification and claims, use all are appreciated that the modification that adds term " about " in all cases.Therefore, only if point out on the contrary, the character that given numerical value can hope according to the present invention to obtain in specification and claims different and changing.At bottom line, and be not used in the scope that the application of equivalent principle is defined as claim, the value that each numerical value all should be accordinged to the significant digits of being reported at least makes an explanation through using common rounding method.And all scopes in this announcement all are appreciated that starting point and the end point values that comprises scope, comprise arbitrarily and all are included in wherein among a small circle.For example, certain scope " 1-10 " should be considered to comprise any of (being included) between minimum of a value 1 and the maximum 10 with all among a small circle; Promptly all are initial with the minimum of a value more than or equal to 1, and be less than or equal to that 10 maximum finishes all among a small circle, 5-10 for example, 3.3-6.7, or 1.5-8.8.All lists of references of in this file, being mentioned all are appreciated that all to include and are used for reference.
Should be noted that and understand, under the situation that does not break away from the desired the spirit and scope of the present invention of accompanying Claim, can make various modifications and improvement the present invention of above-mentioned detailed description.Therefore, the scope of the technical scheme of requirement protection does not receive the restriction of given any specific exemplary teachings.
Applicant's statement, above content are to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. an anticorrosion aluminium brazing material is characterized in that, comprises the following component of representing with percentage by weight wt%: Si 1.0-5.0wt%; Mn 0.6-1.8wt%, Fe 0.15-0.35wt%, Sr 0.1-0.3wt%; Cu 1-2wt%; Cr 1.5-2.5wt%, Ti 0.05-0.2wt%, surplus Al.
2. anticorrosion aluminium brazing material according to claim 1 is characterized in that, the percentage by weight of said Si in said brazing material is 2.0-4.0wt%, is preferably 2.5-3.5wt%.
3. anticorrosion aluminium brazing material according to claim 1 and 2 is characterized in that, the percentage by weight of said Mn in said brazing material is 0.8-1.6wt%, is preferably 1.0-1.4wt%.
4. according to the described anticorrosion aluminium brazing material of one of claim 1-3, it is characterized in that the percentage by weight of said Fe in said brazing material is 0.2-0.3wt%, is preferably 0.22-0.28wt%.
5. according to the described anticorrosion aluminium brazing material of one of claim 1-4, it is characterized in that the percentage by weight of said Sr in said brazing material is 0.15-0.25wt%, is preferably 0.18-0.22wt%.
6. according to the described anticorrosion aluminium brazing material of one of claim 1-5, it is characterized in that the percentage by weight of said Cu in said brazing material is 1.2-1.8wt%, is preferably 1.3-1.5wt%.
7. according to the described anticorrosion aluminium brazing material of one of claim 1-6, it is characterized in that the percentage by weight of said Cr in said brazing material is 1.6-2.3wt%, is preferably 1.8-2.1wt%.
8. according to the described anticorrosion aluminium brazing material of one of claim 1-7, it is characterized in that the percentage by weight of said Ti in said brazing material is 0.08-0.18wt%, is preferably 0.1-0.15wt%.
9. according to the described anticorrosion aluminium brazing material of one of claim 1-8, it is characterized in that said brazing material comprises the following component of representing with percentage by weight wt%: Si 2.0-4.0wt%; Mn 0.8-1.6wt%, Fe 0.2-0.3wt%, Sr 0.15-0.25wt%; Cu 1.2-1.8wt%; Cr 1.6-2.3wt%, Ti 0.08-0.18wt%, surplus Al;
Preferably, said brazing material comprises the following component of representing with percentage by weight wt%: Si 2.5-3.5wt%, Mn 1.0-1.4wt%; Fe 0.22-0.28wt%; Sr 0.18-0.22wt%, Cu 1.3-1.5wt%, Cr 1.8-2.1wt%; Ti 0.1-0.15wt%, surplus Al.
10. product that is suitable for soldering has the matrix and the clad lower than said matrix of the fusing point on said matrix of aluminum or aluminum alloy, it is characterized in that said clad is by processing according to the described anticorrosion aluminium brazing material of one of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240255.6A CN102773626B (en) | 2012-07-11 | 2012-07-11 | Corrosion-resistant aluminum alloy soldering material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240255.6A CN102773626B (en) | 2012-07-11 | 2012-07-11 | Corrosion-resistant aluminum alloy soldering material |
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| CN102773626A true CN102773626A (en) | 2012-11-14 |
| CN102773626B CN102773626B (en) | 2014-12-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264238A (en) * | 2013-05-22 | 2013-08-28 | 慈溪市宜美佳电器有限公司 | Anti-corrosion aluminum alloy brazing filler metal and preparation method thereof |
| CN106624441A (en) * | 2016-12-29 | 2017-05-10 | 安徽华众焊业有限公司 | High-strength aluminum-base brazing filler metal and preparing method thereof |
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| CN1726113A (en) * | 2002-12-13 | 2006-01-25 | 克里斯铝轧制品有限公司 | Brazing sheet product and method of its manufacture |
| CN101358311A (en) * | 2007-07-19 | 2009-02-04 | 古河Sky株式会社 | Aluminum alloy brazing sheet having high-strength and production method therefore |
| WO2011034496A2 (en) * | 2009-09-17 | 2011-03-24 | Sapa Heat Transfer Ab | Aluminium brazing sheet |
| CN102112269A (en) * | 2008-06-02 | 2011-06-29 | 艾尔坎国际有限公司 | Aluminum alloy strips for brazed heat exchanger tubes |
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| US3917151A (en) * | 1973-02-08 | 1975-11-04 | Kaiser Aluminium Chem Corp | Vacuum brazing process |
| CN1390266A (en) * | 1999-11-17 | 2003-01-08 | 克里斯铝轧制品有限公司 | Aluminium brazing alloy |
| CN1726113A (en) * | 2002-12-13 | 2006-01-25 | 克里斯铝轧制品有限公司 | Brazing sheet product and method of its manufacture |
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| CN103264238A (en) * | 2013-05-22 | 2013-08-28 | 慈溪市宜美佳电器有限公司 | Anti-corrosion aluminum alloy brazing filler metal and preparation method thereof |
| CN106624441A (en) * | 2016-12-29 | 2017-05-10 | 安徽华众焊业有限公司 | High-strength aluminum-base brazing filler metal and preparing method thereof |
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| CN102773626B (en) | 2014-12-03 |
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