CN87101020A - A kind of fluoride flux and a kind of aluminium silicon type solder - Google Patents
A kind of fluoride flux and a kind of aluminium silicon type solder Download PDFInfo
- Publication number
- CN87101020A CN87101020A CN87101020.8A CN87101020A CN87101020A CN 87101020 A CN87101020 A CN 87101020A CN 87101020 A CN87101020 A CN 87101020A CN 87101020 A CN87101020 A CN 87101020A
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- aluminium
- solder
- brazing flux
- soldering
- alf
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Abstract
A kind ofly be respectively 30～50%AlF by percentage by weight
3, 50～70%K
3AlF
6With 0.5～4.2%K
2SiF
6The brazing flux that interfacial agent is prepared into except being used for aluminium and aluminium (or aluminium alloy), outside aluminium and other metal, is suitable for aluminium and stainless soldering especially.With this brazing flux with solder adapted of the present invention, the soldering better effects if, this solder is adding＜0.5%Cu in al-si alloy filler metal, 0.01～0.05%Sr has improved the mechanical performance and the corrosion resistance of soldered fitting as trace element.
Description
The present invention is a kind of aluminium and aluminium (or aluminium alloy) of being used for, and the brazing flux of aluminium and other solder bonding metal and solder, brazing flux of the present invention and solder are specially adapted to aluminium and stainless soldering.
Be used for aluminium and aluminium, the brazing flux and the solder of aluminium and other solder bonding metal have multiple product, and the brazing flux that BP 1055914 is put down in writing is aluminum fluoride (AlF
3), and potassium fluoride (KF) composition mixes.The fusing point of this brazing flux higher (570 ℃～580 ℃), thereby the scope of application is restricted, and when the preparation brazing flux, can produce toxic gas.When being mixed with water slurry with the al-si filler metal of using always with this brazing flux, generally effective in 2 hours, when being used for aluminium and other solder bonding metal, because the fusing point of two kinds of different metals, physical parameter differences such as the coefficient of expansion, the wetability that seems and mobile variation have reduced the quality of soldered fitting.The fluoride flux of UK Patent Application publication number 2119407 reports is at aluminum fluoride (AlF
3) and potassium fluoride (KF) type fluoride flux in add lithium fluoride (LiF), reduced the fusing point of brazing flux, the flowability of brazing flux and wetability when having improved soldering, this brazing flux seems when being used for aluminium and manganese-containing aluminum alloy soldering certain advantage, its fusing point is that 490 ℃～550 ℃ lower brazing fluxes of this fusing point are when being used for aluminium and stainless steel braze welding, because stainless physical parameter is mutually far short of what is expected with aluminium, so can not obtain the soldered fitting quality of being satisfied with.Above-mentioned two kinds of brazing fluxes are usually at weldering aluminium and aluminium (or aluminium alloy), when aluminium and other solder bonding metal, and adapted al-si filler metals all, this solder all is prepared into the sheet stock that adapts, bar etc. by the known joint pattern usually.The solder of being reported in the example in the UK Patent Application publication number 2119407, its composition is respectively Al-10%Si-4%Cu and Al-10%Si-4%Cu-10%Zn, and the strength of joint that this solder brazing comes out is not high, and corrosion resistance is poor, when joint is gapped, escape easily.
Brazing flux of the present invention is a base with aluminum fluoride and fluoro complex, adds a certain amount of K
2SiF
6Interfacial agent, its concrete composition are 30～50% aluminum fluoride (AlF by weight percentage
3), 50～70% fluoridize potassium aluminate (K
3AlF
6), 0.5～4.2% interfacial agent (K
2SiF
6), it is 560 ℃～568 ℃ that this brazing flux has fusing point, since added interfacial agent, at brazed aluminum and aluminium alloy, aluminium and other metal, particularly when brazed aluminum and stainless steel, wetability is good, and the mobilizing function of brazing flux is strong, and the out-of-service time is long, help evenly adhering to, prevent the generation of oxide-film at the soldering working surface.Brazing flux of the present invention in use can be with dry powder form, perhaps paste form, and perhaps water furnishing water slurry shape form is used for soldering, and is easy to use.The raw material that brazing flux of the present invention is selected, market can buy at home, and preparation is simple, does not have toxic gas to produce.
Solder of the present invention, add a certain amount of silicon and copper (also can not adding) strontium (Sr) at home in the fine aluminium of buying on the market (being equivalent to the Aoo commercial-purity aluminium) as trace element, its component is 9-12%Si by weight percentage, 0～0.5%Cu, 0.01 all the other are aluminium for～0.05%Sr, the fusing point of this solder is 575 ℃～578 ℃, when with this solder brazing aluminium and stainless steel, surface wettability is fine, therefore better to the adaptability of joint clearance of brazing, applied widely, soldered fitting has improved corrosion resistance greatly owing to the rare earth element in the solder, the mechanical strength height of joint, and solder of the present invention is in use, can be deployed into dry powder form with brazing flux of the present invention, perhaps water furnishing paste is used for soldering.
Brazing flux of the present invention can be used for the product of soldering various types during with solder adapted of the present invention.
Example 1,
Percentage by weight by following component
AlF
330.3%
K
3AlF
669%
K
2SiF
60.7%
The brazing flux of preparation and the percentage by weight of pressing following component
Si 10.5%;Cu 0.3%;
Sr 0.05%
All the other are aluminium
The solder of preparation, water is all even to be mixed, and until the paste that is sticky shape, is used for the aluminium sheet soldering at the stainless-steel pan outer bottom, and the method for welding of employing is induction brazing, the soldered fitting satisfactory mechanical property of pot at the bottom of the multiple aluminium that this soldering is come out.
Claims (6)
1, is the brazing flux that base is formed mainly, it is characterized in that adding therein K by fluoride salt and fluoro complex salt
2SiF
6Interfacial agent cooperates with fluoride salt and fluoro complex salt.
2, by the described brazing flux of claim 1, it is characterized in that the weight percentage ranges of its constituent is:
30～50%AlF
3
50～70%K
3AlF
6
0.5～4.2%K
2SiF
6
3,, it is characterized in that and to be used for soldering with dry powder form or paste form or furnishing water slurry shape form by the described brazing flux of claim 2.
4, be the aluminium alloy brazing filler metal of base mainly, it is characterized in that adding therein Cu and Sr rare earth element or the single Sr of adding rare earth element as trace element by aluminium-silicon alloys.
5, by the described solder of claim 4, it is characterized in that the weight percentage ranges of its constituent is:
9～12%Si
0～0.5%Cu
0.01～0.05%Sr
All the other are aluminium.
6, by the described solder of claim 5, it is characterized in that and to be used for soldering with dry powder form or paste form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101020.8A CN1005544B (en) | 1987-04-22 | 1987-04-22 | Flux of fluoride type and thermit of alumino-silicon type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101020.8A CN1005544B (en) | 1987-04-22 | 1987-04-22 | Flux of fluoride type and thermit of alumino-silicon type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87101020A true CN87101020A (en) | 1987-12-23 |
| CN1005544B CN1005544B (en) | 1989-10-25 |
Family
ID=4813115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87101020.8A Expired CN1005544B (en) | 1987-04-22 | 1987-04-22 | Flux of fluoride type and thermit of alumino-silicon type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005544B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998010887A1 (en) * | 1996-09-11 | 1998-03-19 | Solvay Fluor Und Derivate Gmbh | Solderless brazing of aluminium |
| CN1305078C (en) * | 2003-01-10 | 2007-03-14 | 高丽商事株式会社 | Non-magnetic stainless steel wire, overhead electric lead method of making steel wire and overhead electric lead |
| CN101378873B (en) * | 2006-02-17 | 2011-08-03 | 株式会社神户制钢所 | Flux-cored wire for different-material bonding and method of bonding different materials |
| CN102152023A (en) * | 2010-03-04 | 2011-08-17 | 兰州理工大学 | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal |
| CN102152024A (en) * | 2011-04-28 | 2011-08-17 | 浙江大学 | High-strength aluminum alloy brazing filler metal with melting point being lower than 500 DEG C and preparation method thereof |
| CN102284757A (en) * | 2010-06-18 | 2011-12-21 | 中国北车集团大连机车研究所有限公司 | Plate-type radiator and production method thereof |
| CN102513629A (en) * | 2011-12-02 | 2012-06-27 | 中国科学院等离子体物理研究所 | Welding process for mixing connectors of superconducting tokamak device feeder system cooling pipelines |
| CN102765564A (en) * | 2012-06-13 | 2012-11-07 | 宁波联合华发五金机械有限公司 | Oil heater and welding method thereof |
| CN103603002A (en) * | 2013-11-14 | 2014-02-26 | 北京航空航天大学 | Surface film removing agent capable of realizing zero-defect direct-current positive polarity welding of 6XXX-series aluminum alloy |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN104812523B (en) * | 2012-10-26 | 2017-04-05 | 株式会社Uacj | The method for welding of aluminium alloy and the aluminium alloy element for being coated with flux component |
| CN111050986A (en) * | 2017-08-03 | 2020-04-21 | 霍尼韦尔国际公司 | Free-flowing potassium aluminum fluoride flux |
| CN113478123A (en) * | 2021-08-23 | 2021-10-08 | 广东省科学院中乌焊接研究所 | Modified potassium fluoroaluminate brazing flux as well as preparation method and application thereof |
| CN114260613A (en) * | 2021-11-12 | 2022-04-01 | 浙江新锐焊接科技股份有限公司 | Brazing flux for aluminum and aluminum alloy brazing and preparation method thereof |
-
1987
- 1987-04-22 CN CN87101020.8A patent/CN1005544B/en not_active Expired
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105620C (en) * | 1996-09-11 | 2003-04-16 | 索尔微氟及衍生物有限公司 | Solderless brazing of aluminium |
| WO1998010887A1 (en) * | 1996-09-11 | 1998-03-19 | Solvay Fluor Und Derivate Gmbh | Solderless brazing of aluminium |
| CN1305078C (en) * | 2003-01-10 | 2007-03-14 | 高丽商事株式会社 | Non-magnetic stainless steel wire, overhead electric lead method of making steel wire and overhead electric lead |
| CN101378873B (en) * | 2006-02-17 | 2011-08-03 | 株式会社神户制钢所 | Flux-cored wire for different-material bonding and method of bonding different materials |
| CN102152023A (en) * | 2010-03-04 | 2011-08-17 | 兰州理工大学 | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal |
| CN102284757A (en) * | 2010-06-18 | 2011-12-21 | 中国北车集团大连机车研究所有限公司 | Plate-type radiator and production method thereof |
| CN102152024B (en) * | 2011-04-28 | 2012-10-03 | 浙江大学 | High-strength aluminum alloy brazing filler metal with melting point being lower than 500 DEG C and preparation method thereof |
| CN102152024A (en) * | 2011-04-28 | 2011-08-17 | 浙江大学 | High-strength aluminum alloy brazing filler metal with melting point being lower than 500 DEG C and preparation method thereof |
| CN102513629A (en) * | 2011-12-02 | 2012-06-27 | 中国科学院等离子体物理研究所 | Welding process for mixing connectors of superconducting tokamak device feeder system cooling pipelines |
| CN102513629B (en) * | 2011-12-02 | 2014-05-07 | 中国科学院等离子体物理研究所 | Welding process for mixing connectors of superconducting tokamak device feeder system cooling pipelines |
| CN102765564A (en) * | 2012-06-13 | 2012-11-07 | 宁波联合华发五金机械有限公司 | Oil heater and welding method thereof |
| CN104812523B (en) * | 2012-10-26 | 2017-04-05 | 株式会社Uacj | The method for welding of aluminium alloy and the aluminium alloy element for being coated with flux component |
| CN103603002A (en) * | 2013-11-14 | 2014-02-26 | 北京航空航天大学 | Surface film removing agent capable of realizing zero-defect direct-current positive polarity welding of 6XXX-series aluminum alloy |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN111050986A (en) * | 2017-08-03 | 2020-04-21 | 霍尼韦尔国际公司 | Free-flowing potassium aluminum fluoride flux |
| CN113478123A (en) * | 2021-08-23 | 2021-10-08 | 广东省科学院中乌焊接研究所 | Modified potassium fluoroaluminate brazing flux as well as preparation method and application thereof |
| CN114260613A (en) * | 2021-11-12 | 2022-04-01 | 浙江新锐焊接科技股份有限公司 | Brazing flux for aluminum and aluminum alloy brazing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1005544B (en) | 1989-10-25 |
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