CN102922174A - Soldering flux for welding magnalium alloy - Google Patents
Soldering flux for welding magnalium alloy Download PDFInfo
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- CN102922174A CN102922174A CN2012104481548A CN201210448154A CN102922174A CN 102922174 A CN102922174 A CN 102922174A CN 2012104481548 A CN2012104481548 A CN 2012104481548A CN 201210448154 A CN201210448154 A CN 201210448154A CN 102922174 A CN102922174 A CN 102922174A
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- csf
- fluoride
- brazing flux
- alf
- welding
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Abstract
The invention relates to a soldering flux for welding magnalium alloy. The soldering flux is composed of the following components by mass: 97.5-99.5% of ALF3-CsF series soldering flux, 0.2-2.0% of zinc fluoride and 0.1-0.5% of stannic fluoride, wherein the molar ratio of ALF3 to CsF is 42.5: 47.5 or 41.5: 48.5.
Description
Technical field
The invention belongs to field of welding material, refer to especially the brazing material that a kind of welding of aluminum and aluminium alloy brazing are used.
Background technology
Because aluminium and aluminum alloy surface can form the stable pellumina of one deck, cause relatively difficulty of soldering.Now domestic and international brazing flux to aluminium and aluminium alloy brazing has a lot of concerns.The ALF that now generally acknowledges
3-CsF is the schematic diagram that the crystalline phase figure of brazing flux is considered to instruct aluminium and aluminum alloy brazing flux, lists ALF in this crystalline phase figure
3: CsF=42.0: 58.0 (mol ratios), fusion temperature is 471 ℃, is considered to optimal selection.Therefore, the existing brazing flux that closes in aluminium and the aluminium alloy solder flux all adopts this ratio.
Disclose the brazing flux of a kind of welding of aluminum and aluminium alloy for the patent application of CN200710029683 such as Chinese patent application number, disclosed technical scheme is for including by mass percentage the ALF of 97.0-99.9% in this application
3: CsF=42.0: 58.0 (mol ratios), the zinc fluoride of 0.1-3.0% and the tin fluoride of 0-0.5%.
But in actual production, the brazing flux that utilizes this proportioning to make can not reach optimum efficiency aspect the soldering of aluminium alloy containing magnesium.Find ALF by analyzing
3: CsF=42.0: 58.0 (mol ratios), fusion temperature is that 471 ℃ brazing flux ratio mainly is for the fine aluminium structure or does not contain magnesium or low magnalium, because although the brazing flux of this ratio has special activity to the aluminium alloy that contains magnesium, but this activity is for the high aluminium alloy of magnesium content, magnesium wherein can with brazing flux in fluorine form dystectic magnesium fluoride, cause well liquid phase of scolder, and affect the effect of soldering.
Summary of the invention
The objective of the invention is improvement of the technical scheme, a kind of brazing flux that can better adapt to the aluminium alloy containing magnesium soldering is provided.
The present invention is achieved by the following technical solutions: a kind of brazing flux that welds aluminium alloy containing magnesium, its composition includes ALF
3-CsF is brazing flux, zinc fluoride and tin fluoride; ALF wherein
3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5; Described each mass percent that forms is the ALF of 97.5-99.5%
3-CsF, the zinc fluoride of 0.2-2.0%, the tin fluoride of 0.1-0.5%.
Described zinc fluoride is 3: 1 with the mass ratio of tin fluoride.
The beneficial effect that the present invention compares with prior art is:
1, because ALF
3: CsF (mol ratio) is not the Best Point of crystalline phase figure, and its activity to magnesium descends, and therefore is conducive to the generation that zinc fluoride hinders magnesium fluoride.
2, the final face of weld of the brazing flux that utilizes the technical program to make is smooth, does not have large particle.
The specific embodiment
Below by specific embodiment technical scheme of the present invention is described, following examples are just in order to illustrate the present invention rather than to limit scope of the present invention.
A kind of brazing flux that welds aluminium alloy containing magnesium, its composition includes ALF
3-CsF is brazing flux, zinc fluoride and tin fluoride; ALF wherein
3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5; Described each mass percent that forms is the ALF of 97.5-99.5%
3-CsF, the zinc fluoride of 0.2-2.0%, the tin fluoride of 0.1-0.5%.
Described zinc fluoride is 3: 1 with the mass ratio of tin fluoride.
The manufacturing process of the technical program is identical with prior art, does not elaborate.
Still using the zinc-aluminium ratio with the scolder of its cooperation is 80: 20 scolder commonly used.
Above embodiment has illustrated technical scheme of the present invention, it will be appreciated by those skilled in the art that to be out of shape or to be equal to replacement by above-mentioned technical scheme, all can access other embodiments of the invention.
Claims (2)
1. brazing flux that welds aluminium alloy containing magnesium, its composition includes ALF
3-CsF is brazing flux, zinc fluoride and tin fluoride; It is characterized in that: ALF wherein
3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5; Described each mass percent that forms is the ALF of 97.5-99.5%
3-CsF, the zinc fluoride of 0.2-2.0%, the tin fluoride of 0.1-0.5%.
2. the brazing flux of welding aluminium alloy containing magnesium according to claim 1, it is characterized in that: described zinc fluoride is 3: 1 with the mass ratio of tin fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104481548A CN102922174A (en) | 2012-11-05 | 2012-11-05 | Soldering flux for welding magnalium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104481548A CN102922174A (en) | 2012-11-05 | 2012-11-05 | Soldering flux for welding magnalium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102922174A true CN102922174A (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104481548A Pending CN102922174A (en) | 2012-11-05 | 2012-11-05 | Soldering flux for welding magnalium alloy |
Country Status (1)
| Country | Link |
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| CN (1) | CN102922174A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659054A (en) * | 2013-10-25 | 2014-03-26 | 天津大学 | Selffluxing brazing alloy suitable for brazing of thin aluminum plates and aluminum alloys and preparation method |
| CN103909359A (en) * | 2014-03-04 | 2014-07-09 | 浙江新锐焊接材料有限公司 | Brazing aluminum steel and cesium and rubidium containing brazing flux thereof |
| CN106624462A (en) * | 2016-11-23 | 2017-05-10 | 薛亚红 | Soldering flux for welding magnesium-containing aluminum alloy |
Citations (6)
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|---|---|---|---|---|
| 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 |
| EP0785045A1 (en) * | 1996-01-22 | 1997-07-23 | Fusion Incorporated | Solder flux having low melting point |
| CN1390673A (en) * | 2002-07-05 | 2003-01-15 | 清华大学 | MgAl alloy solder without corrosive fluoride and its preparing process |
| CN101112738A (en) * | 2007-08-10 | 2008-01-30 | 广州有色金属研究院 | Soldering aluminum and brazing flux of aluminum alloy |
| CN101439449A (en) * | 2008-12-18 | 2009-05-27 | 广州有色金属研究院 | Brazing flux without corrosion for aluminum and aluminum alloy brazing |
-
2012
- 2012-11-05 CN CN2012104481548A patent/CN102922174A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP0785045A1 (en) * | 1996-01-22 | 1997-07-23 | Fusion Incorporated | Solder flux having low melting point |
| CN1390673A (en) * | 2002-07-05 | 2003-01-15 | 清华大学 | MgAl alloy solder without corrosive fluoride and its preparing process |
| CN101112738A (en) * | 2007-08-10 | 2008-01-30 | 广州有色金属研究院 | Soldering aluminum and brazing flux of aluminum alloy |
| CN101439449A (en) * | 2008-12-18 | 2009-05-27 | 广州有色金属研究院 | Brazing flux without corrosion for aluminum and aluminum alloy brazing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103659054A (en) * | 2013-10-25 | 2014-03-26 | 天津大学 | Selffluxing brazing alloy suitable for brazing of thin aluminum plates and aluminum alloys and preparation method |
| CN103659054B (en) * | 2013-10-25 | 2015-11-18 | 天津大学 | Be applicable to self-fluxing agent material and the preparation method of the soldering of thin plate Al and Alalloy |
| CN103909359A (en) * | 2014-03-04 | 2014-07-09 | 浙江新锐焊接材料有限公司 | Brazing aluminum steel and cesium and rubidium containing brazing flux thereof |
| CN103909359B (en) * | 2014-03-04 | 2016-01-06 | 浙江新锐焊接材料有限公司 | A kind of can the brazing flux containing caesium rubidium of soldering aluminum steel and aluminum bronze |
| CN106624462A (en) * | 2016-11-23 | 2017-05-10 | 薛亚红 | Soldering flux for welding magnesium-containing aluminum alloy |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |