CN106624462A - Soldering flux for welding magnesium-containing aluminum alloy - Google Patents
Soldering flux for welding magnesium-containing aluminum alloy Download PDFInfo
- Publication number
- CN106624462A CN106624462A CN201611075819.XA CN201611075819A CN106624462A CN 106624462 A CN106624462 A CN 106624462A CN 201611075819 A CN201611075819 A CN 201611075819A CN 106624462 A CN106624462 A CN 106624462A
- Authority
- CN
- China
- Prior art keywords
- fluoride
- csf
- brazing flux
- alf
- soldering flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
Abstract
The invention relates to soldering flux for welding a magnesium-containing aluminum alloy. The soldering flux is prepared from, by mass, 97.5%-99.5% of ALF3-CsF series soldering flux, 0.2%-2.0% of zinc fluoride, 0.1%-0.5% of stannic fluoride and 0.01%-0.03% of iridium fluoride, wherein the mole ratio of ALF3:CsF is 42.5:47.5 or 41.5:48.5.
Description
Technical field
The invention belongs to field of welding material, particularly relates to the brazing material of a kind of welding aluminium and aluminium alloy brazing.
Background technology
Because aluminium and aluminum alloy surface can form one layer of stable pellumina, cause soldering relatively difficult.It is now right both at home and abroad
The brazing flux of aluminium and aluminium alloy brazing has many concerns.The ALF for now generally acknowledging3The crystalline phase figure of-CsF systems brazing flux is considered as to instruct aluminium
And the schematic diagram of aluminum alloy brazing flux, list ALF in the crystalline phase figure3: CsF=42.0: 58.0 (mol ratios), fusion temperature is
471 DEG C, it is considered to be optimal selection.Therefore, existing aluminium and the brazing flux in aluminium alloy solder flux of closing is using this ratio.
Such as Chinese Patent Application No. discloses a kind of welding aluminium for the patent application of CN200710029683 and aluminium is closed
The brazing flux of gold, in this application disclosed technical scheme is the ALF for including 97.0-99.9% by mass percentage3: 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, can not be reached in terms of the soldering of aluminium alloy containing magnesium using brazing flux obtained in this proportioning
Optimum efficiency.Found by analysis, ALF3: CsF=42.0: 58.0 (mol ratios), fusion temperature is 471 DEG C of brazing flux ratio master
If for fine aluminium structure or without magnesium or low magnalium, although because the brazing flux of this ratio has spy to the aluminium alloy containing magnesium
Different activity, but this activity is for the high aluminium alloy of magnesium content, and magnesium therein can form high-melting-point with the fluorine in brazing flux
Magnesium fluoride, cause solder can not liquid phase well, and affect the effect of soldering.
The content of the invention
The purpose of the present invention is the improvement of above-mentioned technical proposal, there is provided one kind can preferably adapt to aluminium alloy containing magnesium soldering
Brazing flux.
The present invention is achieved by the following technical solutions：
A kind of brazing flux of welding aluminium alloy containing magnesium, its composition includes ALF3- CsF systems brazing flux, zinc fluoride, tin fluoride and fluorine
Change iridium；Wherein ALF3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5；The mass percent of each composition is,
The ALF of 97.5-99.5%3The zinc fluoride of-CsF, 0.2-2.0%, the tin fluoride of 0.1-0.5% and the fluorination of 0.01-0.03%
Iridium.
The zinc fluoride is 3: 1 with the mass ratio of tin fluoride.
Present invention beneficial effect compared with the existing technology is：
1st, because ALF3: CsF (mol ratio) is not the Best Point of crystalline phase figure, its activity decrease to magnesium, therefore favorably
The generation of magnesium fluoride is hindered in zinc fluoride.
2nd, it is smooth using the final face of weld of brazing flux obtained in the technical program, without big particle.
Specific embodiment
Technical scheme is illustrated below by way of specific embodiment, following examples are simply to illustrate that the present invention
Rather than restriction the scope of the present invention.
A kind of brazing flux of welding aluminium alloy containing magnesium, its composition includes ALF3- CsF systems brazing flux, zinc fluoride, tin fluoride and fluorine
Change iridium；Wherein ALF3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5；The mass percent of each composition is,
The ALF of 97.5-99.5%3The zinc fluoride of-CsF, 0.2-2.0%, the tin fluoride of 0.1-0.5% and the fluorination of 0.01-0.03%
Iridium.
The zinc fluoride is 3: 1 with the mass ratio of tin fluoride.
The manufacturing process of the technical program is identical compared with technology, does not elaborate.
The conventional solder that zinc-aluminium ratio is 80: 20 is still used with its solder for coordinating.
Embodiment above illustrates technical scheme, it will be appreciated by those skilled in the art that can be by above-mentioned
Technical scheme deformed or equivalent, can obtain other embodiments of the invention.
Claims (2)
1. a kind of brazing flux of welding aluminium alloy containing magnesium, its composition includes ALF3- CsF systems brazing flux, zinc fluoride tin fluoride and fluorination
Iridium；It is characterized in that：Wherein ALF3: CsF (mol ratio)=42.5: 47.5 or 41.5: 48.5；The quality percentage of each composition
Than for the ALF of 97.5-99.5%3The zinc fluoride of-CsF, 0.2-2.0%, the tin fluoride of 0.1-0.5% and 0.01-0.03%'s
Fluorination iridium.
2. it is according to claim 1 welding aluminium alloy containing magnesium brazing flux, it is characterised in that：The zinc fluoride is with tin fluoride
Mass ratio is 3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075819.XA CN106624462A (en) | 2016-11-23 | 2016-11-23 | Soldering flux for welding magnesium-containing aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075819.XA CN106624462A (en) | 2016-11-23 | 2016-11-23 | Soldering flux for welding magnesium-containing aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106624462A true CN106624462A (en) | 2017-05-10 |
Family
ID=58814396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611075819.XA Pending CN106624462A (en) | 2016-11-23 | 2016-11-23 | Soldering flux for welding magnesium-containing aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624462A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102764938A (en) * | 2012-07-18 | 2012-11-07 | 熊进 | Aluminum soldering paste |
| CN102922174A (en) * | 2012-11-05 | 2013-02-13 | 虞海香 | Soldering flux for welding magnalium alloy |
| CN103192194A (en) * | 2013-03-28 | 2013-07-10 | 天津市恒固科技有限公司 | Solder wire for aluminum and aluminum alloy soldering and preparation method thereof |
| CN105618960A (en) * | 2016-03-15 | 2016-06-01 | 南京航空航天大学 | Soldering flux suitable for aluminum steel brazing |
-
2016
- 2016-11-23 CN CN201611075819.XA patent/CN106624462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102764938A (en) * | 2012-07-18 | 2012-11-07 | 熊进 | Aluminum soldering paste |
| CN102922174A (en) * | 2012-11-05 | 2013-02-13 | 虞海香 | Soldering flux for welding magnalium alloy |
| CN103192194A (en) * | 2013-03-28 | 2013-07-10 | 天津市恒固科技有限公司 | Solder wire for aluminum and aluminum alloy soldering and preparation method thereof |
| 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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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |