CN1390673A - MgAl alloy solder without corrosive fluoride and its preparing process - Google Patents
MgAl alloy solder without corrosive fluoride and its preparing process Download PDFInfo
- Publication number
- CN1390673A CN1390673A CN 02123643 CN02123643A CN1390673A CN 1390673 A CN1390673 A CN 1390673A CN 02123643 CN02123643 CN 02123643 CN 02123643 A CN02123643 A CN 02123643A CN 1390673 A CN1390673 A CN 1390673A
- Authority
- CN
- China
- Prior art keywords
- brazing flux
- aluminium alloy
- soldering
- alloy containing
- containing magnesium
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 11
- 229910000679 solder Inorganic materials 0.000 title abstract description 16
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title abstract description 5
- 229910020068 MgAl Inorganic materials 0.000 title abstract description 3
- 229910045601 alloy Inorganic materials 0.000 title abstract description 3
- 239000000956 alloy Substances 0.000 title abstract description 3
- 238000005476 soldering Methods 0.000 claims abstract description 22
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 claims abstract description 16
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims abstract description 8
- 238000005219 brazing Methods 0.000 claims description 45
- 230000004907 flux Effects 0.000 claims description 34
- 229910000838 Al alloy Inorganic materials 0.000 claims description 31
- 229910052749 magnesium Inorganic materials 0.000 claims description 25
- 239000011777 magnesium Substances 0.000 claims description 25
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 24
- 239000011701 zinc Substances 0.000 claims description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- BHHYHSUAOQUXJK-UHFFFAOYSA-L zinc fluoride Chemical compound F[Zn]F BHHYHSUAOQUXJK-UHFFFAOYSA-L 0.000 abstract 3
- 235000001055 magnesium Nutrition 0.000 description 24
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 229910016569 AlF 3 Inorganic materials 0.000 description 5
- 229910002056 binary alloy Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910018137 Al-Zn Inorganic materials 0.000 description 2
- 229910018573 Al—Zn Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 2
- 229910008310 Si—Ge Inorganic materials 0.000 description 2
- 229910000635 Spelter Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910018134 Al-Mg Inorganic materials 0.000 description 1
- 229910018467 Al—Mg Inorganic materials 0.000 description 1
- 229910017639 MgSi Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
A fluoride solder containing MgAl alloy is prepared from cesium fluoride (38-43 wt.%), AlF3 (52-56) and ZnF2 (2-6) through proportional mixing and grinding. Its soldering temp is lower than 500 deg.C.
Description
Technical field
The invention belongs to brazing material field, particularly brazing flux without corrosion of being adopted of aluminium alloy containing magnesium soldering and preparation method thereof.
Background technology
Aluminium alloy containing magnesium mainly contains LF series rustproof aluminum alloy, LY series duralumin, LC series superduralumin, LD series wrought aluminium and ZL series Birmasil, accounts for very big ratio in aluminium alloy.Because little, the heat-conductivity conducting height of their proportion occupies critical role in the The modern industry material.Obtained using widely in departments such as Aero-Space, electronics, metallurgy, machine-building and light industry.As Al-Mg is that rustproof aluminum alloy is usually used in weldments such as the container of aviation kerosine, gasoline and lubricating oil and conduit, and duralumin is widely used in the critical components of producing on aircraft skin, propeller blade and the rocket such as liquid fuel tank.Therefore, recent two decades comes, and the interconnection technique development of aluminium alloy containing magnesium is rapid, and the convenient first-elected soldering of method of attachment of precision.
Aluminium and aluminium alloy are compared difficulty of soldering with other metals, its reason is that aluminium is very big to the affinity of oxygen, and the surface is easy to generate the Al of one deck densification and chemically stable, fusing point very high (2050 ℃)
2O
3Film, quite difficult the removal.Owing to the existence of magnesium, make mother metal surface film oxide The Nomenclature Composition and Structure of Complexes that variation all take place, in the aluminium alloy containing magnesium with LF
2(5052 or AM
r) for the aluminium alloy containing magnesium of representative when heating more than 500 ℃, Mg in the oxide-film and the content of Si heighten, and have MgO to occur mutually with MgSi.The existence of oxide-film has increased the interfacial tension between melt solder and the mother metal, hampers the wetting and combination of solder and mother metal, one of major obstacle when becoming soldering.So, not only to remove Al during the soldering aluminium alloy containing magnesium
2O
3Film also will be removed the MgO film that forms because of the existence of magnesium.When using traditional chloride brazing flux brazed aluminum alloy, postwelding need carry out strict cleaning, and cleaning is very loaded down with trivial details, otherwise will cause the structure early damage because of the serious corrosion of joint, and when magnesium content＞1.5%, relatively more difficult with the soldering of chloride brazing flux.Unusual difficulty just when using the aluminium alloy of free from corrosion promise Croker (Nocolok) brazing flux soldering magnesium content＞0.5%.In addition, because the brazing temperature that adopts promise Croker (Nocolok) brazing flux is higher than the burning temperature of fusing point and some heat treatment reinforcement aluminium alloys of most aluminium alloy containing magnesiums generally more than 590-610 ℃, cause the soldered fitting performance to descend or the soldering failure.The burning and the etching problem that exist when therefore, temperature (fusing point is lower than 500 ℃) brazing flux without corrosion is to comprehensive solution aluminium alloy containing magnesium soldering in the research have very important meaning.
The burning that domestic and international existing solution aluminium alloy containing magnesium soldering exists and the measure of etching problem are to attempt adopting CsF-AlF
3Binary system fused salt brazing flux.China units concerned had once reported the CsF-AlF of certain proportioning in nineteen eighty-two
3The fusing point of binary system fused salt is lower than the burning temperature of most of aluminium alloy containing magnesiums, be hopeful as aluminium alloy containing magnesium solder without corrosive brazing flux, the present patent application person had reported in 1998 once that this binary system fused salt brazing flux can not be used for the soldering of aluminium alloy containing magnesium because of the oxide-film that can't remove the aluminium alloy containing magnesium surface.Japan once adopted CsF-AlF in report in 1999
3Binary system fused salt brazing flux (mol ratio AlF
3: CsF=1.2) only when cooperating the Al-Zn solder, can solve aluminium alloy containing magnesium soldering problem.But, from brazing temperature, with CsF-AlF
3The zinc content of the Al-Zn solder that brazing flux can be used higher (greater than 10wt%), contain the solder of zinc because the vapour pressure of zinc is high in brazing process scaling loss very easily, cause the chemical composition and the performance of soldered fitting to descend, and higher zinc content is with the corrosion resistance and the toughness of severe exacerbation soldered fitting in the brazed seam.In addition, domestic and international existing report does not all relate to the preparation method of this binary system fluoride molten salt brazing flux.Therefore, the present brazing flux that proposes or higher because of required brazing temperature, or needing to cooperate contain the use of Zn solder, all is not suitable for the soldering of aluminium alloy containing magnesium.
Summary of the invention
The purpose of this invention is to provide and a kind of need the cooperation contain the use of Zn solder, and the lower brazing flux that is used for the aluminium alloy containing magnesium soldering of brazing temperature.
Brazing flux of the present invention is made up of cesium fluoride, aluminum trifluoride, bifluoride zinc, and its composition proportion is that cesium fluoride 38～43%, aluminum trifluoride 52～56%, bifluoride zinc 2～6% are all weight ratio, and the fusing point of this brazing flux is 450 ℃, and brazing temperature is 460～500 ℃.
The preparation method of the fluoride flux that the present invention proposes may further comprise the steps:
(1) will analyze pure CsF, AlF
3And ZnF
2Powder goes out to mix by the formula rate scale;
(2) will be set by step (1) gained mixed-powder in the platinum mortar, grind, mixed-powder becomes pastel earlier in the process of lapping, continues to be ground to pastel and becomes white dry powder, this white dry powder is brazing flux of the present invention.
The operation principle of brazing flux of the present invention is:
The constituent element CsF of brazing flux of the present invention and component A lF
3Chemical reaction takes place in process of lapping, and the product of this chemical reaction melts the 3rd constituent element ZnF of brazing flux 450 ℃ of generation eutectic reactions in the soldering heating process
2Make the MgO and the Al on aluminium alloy containing magnesium surface
2O
3Film gets loose, thereby impels the solder of fusing to sprawl and fill weld gap at the aluminium alloy containing magnesium moistened surface, and solder solidifies and forms soldered fitting in the soldering cooling procedure.This brazing flux need not to cooperate and contains the soldering problem that spelter solder can solve aluminium alloy containing magnesium, and brazing flux is nonhygroscopic, can not cause electrochemical corrosion to aluminium alloy, so needn't remove the brazing flux residue after the soldering.
Characteristics of the present invention are:
The 3rd constituent element ZnF in the brazing flux of the present invention
2Serve as stripper, thereby this brazing flux be need not and contain spelter solder and cooperate and can effectively remove the oxide-film on aluminium alloy containing magnesium surface, the braze metal zinc content is low, and the toughness of soldered fitting and corrosion resistance are significantly descended.
The said brazing flux of the present invention can need not any safeguard measure through grinding preparation in atmosphere, and operator ' s health is not had harm, and operation is simple, and preparation technology's cost is low, and the finished product brazing flux is nonhygroscopic, does not lose efficacy medium-term and long-term preservation of atmosphere.
The specific embodiment
Below with the embodiment composition of representing brazing flux of the present invention, and brazing process parameter.
The prescription of table 1 brazing flux of the present invention, brazing process parameter and result
| Brazing flux prescription (wt%) | Brazing process parameter | The soldering result | ||||
| AlF 3 | ?CsF | ?ZnF 2 | Solder | By brazing material | Brazing temperature (℃) | |
| 53.0 | ?43.0 | ?4.0 | ?Al-Si-Ge | ????LY12 | ????460 | No burning, two sides fillet are smooth |
| 55.0 | ?43.0 | ?2.0 | ?Al-Si-Ge | ????LY12 | ????460 | No burning, two sides fillet are smooth |
| 56.0 | ?38.0 | ?6.0 | ?Al-Ag-Cu | ????LF2 | ????500 | No burning, two sides fillet are smooth |
Claims (2)
1, a kind of aluminium alloy containing magnesium soldering brazing flux is characterized in that being made up of cesium fluoride, aluminum trifluoride, bifluoride zinc, and its prescription is all weight ratio for cesium fluoride 38～43%, aluminum trifluoride 52～56%, bifluoride zinc 2～6%.
2, a kind of aluminium alloy containing magnesium soldering preparation method of brazing flux is characterized in that following these steps to make:
(1) will analyze pure cesium fluoride, aluminum trifluoride, bifluoride zinc powder goes out to mix by the formula rate scale;
(2) will be set by step (1) gained mixed-powder in the platinum mortar, grind, mixed-powder becomes pastel earlier in the process of lapping, continues to be ground to pastel and becomes white dry powder, is brazing flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021236437A CN1175957C (en) | 2002-07-05 | 2002-07-05 | MgAl alloy solder without corrosive fluoride and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021236437A CN1175957C (en) | 2002-07-05 | 2002-07-05 | MgAl alloy solder without corrosive fluoride and its preparing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1390673A true CN1390673A (en) | 2003-01-15 |
| CN1175957C CN1175957C (en) | 2004-11-17 |
Family
ID=4745177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021236437A Expired - Fee Related CN1175957C (en) | 2002-07-05 | 2002-07-05 | MgAl alloy solder without corrosive fluoride and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1175957C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100496868C (en) * | 2007-09-21 | 2009-06-10 | 江苏科技大学 | Novel non-corrosion fluoride solder and preparation method |
| CN100577345C (en) * | 2007-08-10 | 2010-01-06 | 广州有色金属研究院 | Soldering aluminum and brazing flux of aluminum alloy |
| CN1968774B (en) * | 2004-06-15 | 2010-09-01 | 株式会社鲜光Ampa | Flux-containing brazing agent for use in low-temperature brazing process |
| CN102632350A (en) * | 2012-04-26 | 2012-08-15 | 广州有色金属研究院 | Corrosion-free soldering flux of soldering aluminum heat exchanger |
| CN102814601A (en) * | 2012-01-15 | 2012-12-12 | 洛阳美克金刚石有限公司 | Soldering flux for brazing diamond cemented carbide sand and preparation method for soldering flux |
| CN102922174A (en) * | 2012-11-05 | 2013-02-13 | 虞海香 | Soldering flux for welding magnalium alloy |
| CN103612029A (en) * | 2013-10-25 | 2014-03-05 | 天津大学 | Intermediate-temperature aluminum brazing flux for brazing of high-magnesium aluminum alloy and preparation method |
| CN103659055A (en) * | 2013-11-28 | 2014-03-26 | 浙江鸿峰铝业有限公司 | Soldering flux for soldering of aluminum alloy materials |
| CN104148827A (en) * | 2014-06-17 | 2014-11-19 | 天津大学 | Intermediate-temperature corrosion-free brazing flux used for brazing aluminum alloy with magnesium and preparing method for intermediate-temperature corrosion-free brazing flux |
| CN105081621A (en) * | 2014-05-06 | 2015-11-25 | 烟台市固光焊接材料有限责任公司 | Dry method fluoride non-corrosion aluminium brazing flux production method and prepared non-corrosion aluminium brazing flux |
| 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 |
| CN110076480A (en) * | 2019-04-09 | 2019-08-02 | 中国电器科学研究院股份有限公司 | Aluminium alloy middle temperature brazing brazing flux and preparation method thereof |
| CN115502604A (en) * | 2022-09-29 | 2022-12-23 | 安徽科技学院 | Brazing filler metal for magnesium alloy, using method and soldering flux thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407003B (en) * | 2008-12-02 | 2011-11-23 | 中国电子科技集团公司第十四研究所 | Formula of flux for middle temperature brazing magnesium-containing aluminum alloy |
-
2002
- 2002-07-05 CN CNB021236437A patent/CN1175957C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1968774B (en) * | 2004-06-15 | 2010-09-01 | 株式会社鲜光Ampa | Flux-containing brazing agent for use in low-temperature brazing process |
| CN100577345C (en) * | 2007-08-10 | 2010-01-06 | 广州有色金属研究院 | Soldering aluminum and brazing flux of aluminum alloy |
| CN100496868C (en) * | 2007-09-21 | 2009-06-10 | 江苏科技大学 | Novel non-corrosion fluoride solder and preparation method |
| CN102814601B (en) * | 2012-01-15 | 2015-07-01 | 河南飞孟金刚石工业有限公司 | Soldering flux for brazing diamond cemented carbide sand and preparation method for soldering flux |
| CN102814601A (en) * | 2012-01-15 | 2012-12-12 | 洛阳美克金刚石有限公司 | Soldering flux for brazing diamond cemented carbide sand and preparation method for soldering flux |
| CN102632350A (en) * | 2012-04-26 | 2012-08-15 | 广州有色金属研究院 | Corrosion-free soldering flux of soldering aluminum heat exchanger |
| 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 |
| CN102922174A (en) * | 2012-11-05 | 2013-02-13 | 虞海香 | Soldering flux for welding magnalium alloy |
| CN103612029A (en) * | 2013-10-25 | 2014-03-05 | 天津大学 | Intermediate-temperature aluminum brazing flux for brazing of high-magnesium aluminum alloy and preparation method |
| CN103659055A (en) * | 2013-11-28 | 2014-03-26 | 浙江鸿峰铝业有限公司 | Soldering flux for soldering of aluminum alloy materials |
| CN105081621A (en) * | 2014-05-06 | 2015-11-25 | 烟台市固光焊接材料有限责任公司 | Dry method fluoride non-corrosion aluminium brazing flux production method and prepared non-corrosion aluminium brazing flux |
| CN104148827A (en) * | 2014-06-17 | 2014-11-19 | 天津大学 | Intermediate-temperature corrosion-free brazing flux used for brazing aluminum alloy with magnesium and preparing method for intermediate-temperature corrosion-free brazing flux |
| CN104148827B (en) * | 2014-06-17 | 2016-03-02 | 天津大学 | The middle temperature brazing flux without corrosion of soldering aluminium alloy containing magnesium and preparation method |
| CN110076480A (en) * | 2019-04-09 | 2019-08-02 | 中国电器科学研究院股份有限公司 | Aluminium alloy middle temperature brazing brazing flux and preparation method thereof |
| CN115502604A (en) * | 2022-09-29 | 2022-12-23 | 安徽科技学院 | Brazing filler metal for magnesium alloy, using method and soldering flux thereof |
| CN115502604B (en) * | 2022-09-29 | 2023-07-18 | 安徽科技学院 | Solder for magnesium alloy, using method and soldering flux thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1175957C (en) | 2004-11-17 |
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