CN105081616A - High activity non-corrosion aluminium brazing flux - Google Patents
High activity non-corrosion aluminium brazing flux Download PDFInfo
- Publication number
- CN105081616A CN105081616A CN201410188273.3A CN201410188273A CN105081616A CN 105081616 A CN105081616 A CN 105081616A CN 201410188273 A CN201410188273 A CN 201410188273A CN 105081616 A CN105081616 A CN 105081616A
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- China
- Prior art keywords
- brazing flux
- high activity
- corrosion
- corrosion aluminium
- alf
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A high activity non-corrosion aluminium brazing flux comprises the following components by weight percentage: 43-46.3% of KF, 50-53.7% of ALF3, 0.5-4% of NaO, 0.1-1% of CoO, and 0.5-5% of Al2O3; preferably, the high activity non-corrosion aluminium brazing flux comprises the following components by weight percentage: 44-45% of KF, 51-52% of ALF3, 1-3% of NaO, 0.3-0.8% of CoO, and 0.8-4.5% of Al2O3. The high activity non-corrosion aluminium brazing flux adds NaO, Al2O3, and CoO in the brazing flux basic composition KF and AlF3, thus reducing melting point of the brazing flux, and improving brazing flux activity.
Description
Technical field
The present invention relates to a kind of welding aluminum brazing flux without corrosion, particularly a kind of high activity aluminum brazing flux without corrosion.
Background technology
Current aluminum brazing flux without corrosion is divided into two kinds substantially, potassium fluoroaluminate class and fluoaluminic acid caesium class, and the mode of production of these two kinds of products is roughly the same, all uses the recombination reaction of fluoride to generate product.But these two kinds of non-corrosiveness aluminum brazing flux fusing points existing are higher, in use the temperature of brazing flux is close with the fusion temperature of welded part, is easy to burning, causes mother metal to melt.And the brazing flux that temperature is suitable, or there is corrosivity, otherwise very expensive, if fluoaluminic acid caesium is 40 times of potassium fluoroaluminate price).Therefore obtain low temperature, highly active brazing flux without corrosion is desired by a lot of user.
Summary of the invention
The invention provides a kind of high activity aluminum brazing flux without corrosion, object solves prior art problem, provides a kind of fusing point lower and activity is higher and the aluminum brazing flux that corrosion-free price is low.
The present invention deal with problems adopt technical scheme be:
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF43 ~ 46.3%, AlF
350 ~ 53.7%, NaO0.5 ~ 4%, CoO0.1 ~ 1%, Al
2o
30.5 ~ 5%.
Preferably, each weight percentages of components is KF44 ~ 45%, AlF
351 ~ 52%, NaO1 ~ 3%, CoO0.3 ~ 0.8%, Al
2o
30.8 ~ 4.5%.
Wherein, KF, AlF
3the main component of brazing flux, NaO, Al
2o
3add the fusing point that can reduce brazing flux, improve the activity of brazing flux simultaneously.Due to CoO and Al
2o
3at high temperature can there is chemical reaction, and the appearing at reaction interface and can put forward one of highly active reason just of this situation, therefore CoO can improve the activity of brazing flux equally.
Beneficial effect of the present invention: the present invention is at brazing flux basic ingredient KF, AlF
3interior interpolation NaO, Al
2o
3, CoO, NaO, Al
2o
3, CoO add the fusing point that can reduce brazing flux, improve the activity of brazing flux simultaneously.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
Embodiment 1
High activity aluminum brazing flux without corrosion, is made up of following component, KF44.8g (44.8%), AlF
352g (52%), NaO0.5g (0.5%), CoO0.3g (0.3%), Al
2o
32.5g (2.5%).
Conventional formulation is as follows: percentage by weight, aluminum fluoride AlF3, and 53.7%, potassium fluoride KF, 47.3%.
Conventional formulation and embodiment 1 liang formula adopt same potassium fluoride aluminum fluoride raw material.
Contrast key element: surperficial welding slag color, welding process color, sprawls state after solder dissolves, solder spreading area, weld strength.
Adopt 0.1g solder, the results are shown in Table 1: which result can show high activity.
Table 1
Embodiment 2
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF44.6g, AlF
351.7g, NaO2.5g, CoO0.7g, Al
2o
30.5g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 2.
Table 2
Embodiment 3
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF45g, AlF
350.4g, NaO3g, CoO0.8g, Al
2o
30.8g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 3.
Table 3
Embodiment 4
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF44g, AlF
352g, NaO1g, CoO0.5g, Al
2o
33.5g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 4.
Table 4
Embodiment 5
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF43g, AlF
350g, NaO1g, CoO1g, Al
2o
35g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 5.
Table 5
Embodiment 6
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF43g, AlF
351g, NaO4g, CoO0.1g, Al
2o
31.9g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 6.
Table 6
Embodiment 7
High activity aluminum brazing flux without corrosion, is made up of each component of following percentage by weight, KF43g, AlF
351.5g, NaO0.8g, CoO0.2g, Al
2o
34.5g.
The existing formula of process of the test and contrast is identical with embodiment 1, obtains the result of table 7.
Table 7
Claims (2)
1. high activity aluminum brazing flux without corrosion, is characterized in that: be made up of each component of following percentage by weight, KF43 ~ 46.3%, AlF
350 ~ 53.7%, NaO0.5 ~ 4%, CoO0.1 ~ 1%, Al
2o
30.5 ~ 5%.
2. high activity aluminum brazing flux without corrosion as described in claim 1, is characterized in that: each weight percentages of components is KF44 ~ 45%, AlF
351 ~ 52%, NaO1 ~ 3%, CoO0.3 ~ 0.8%, Al
2o
30.8 ~ 4.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410188273.3A CN105081616A (en) | 2014-05-06 | 2014-05-06 | High activity non-corrosion aluminium brazing flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410188273.3A CN105081616A (en) | 2014-05-06 | 2014-05-06 | High activity non-corrosion aluminium brazing flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105081616A true CN105081616A (en) | 2015-11-25 |
Family
ID=54563424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410188273.3A Pending CN105081616A (en) | 2014-05-06 | 2014-05-06 | High activity non-corrosion aluminium brazing flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618960A (en) * | 2016-03-15 | 2016-06-01 | 南京航空航天大学 | Soldering flux suitable for aluminum steel brazing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036527A (en) * | 1989-01-27 | 1989-10-25 | 西安石油学院 | Carbide alloy and diamond compact brazing flux |
| CN1066014A (en) * | 1991-01-25 | 1992-11-11 | 艾尔坎国际有限公司 | The method of brazing metal surfaces |
| US5171377A (en) * | 1989-12-01 | 1992-12-15 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Brazing flux |
| CN101378873A (en) * | 2006-02-17 | 2009-03-04 | 株式会社神户制钢所 | Flux-cored wire for different-material bonding and method of bonding different materials |
| CN101486137A (en) * | 2008-12-25 | 2009-07-22 | 天津大学 | Novel insoluble aluminum brazing flux without corrosion and preparation method thereof |
-
2014
- 2014-05-06 CN CN201410188273.3A patent/CN105081616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036527A (en) * | 1989-01-27 | 1989-10-25 | 西安石油学院 | Carbide alloy and diamond compact brazing flux |
| US5171377A (en) * | 1989-12-01 | 1992-12-15 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Brazing flux |
| CN1066014A (en) * | 1991-01-25 | 1992-11-11 | 艾尔坎国际有限公司 | The method of brazing metal surfaces |
| CN101378873A (en) * | 2006-02-17 | 2009-03-04 | 株式会社神户制钢所 | Flux-cored wire for different-material bonding and method of bonding different materials |
| CN101486137A (en) * | 2008-12-25 | 2009-07-22 | 天津大学 | Novel insoluble aluminum brazing flux without corrosion and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618960A (en) * | 2016-03-15 | 2016-06-01 | 南京航空航天大学 | Soldering flux suitable for aluminum steel brazing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |
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| RJ01 | Rejection of invention patent application after publication |