CN106736046A - Caesium rubidium brazing flux containing ceric fluoride - Google Patents
Caesium rubidium brazing flux containing ceric fluoride Download PDFInfo
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- CN106736046A CN106736046A CN201611214202.1A CN201611214202A CN106736046A CN 106736046 A CN106736046 A CN 106736046A CN 201611214202 A CN201611214202 A CN 201611214202A CN 106736046 A CN106736046 A CN 106736046A
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- fluoride
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Classifications
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- 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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention provides a kind of caesium rubidium brazing flux containing ceric fluoride, by weight percent (wt.%) meter, and chemical analysis is：0.02~0.5% rubidium fluoride RbF (RbF), 20.0~50.0% cesium fluoride (CsF), 0.01~2.0% aluminium hydroxide (Al (HO) 3), 0.01~1.0% potassium fluoride (KF), 0.001~0.05% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).Its effect is：1st, activity higher is respectively provided with aluminium alloy, Q235 steel, can simultaneously meets the brazing requirements of aluminum steel, aluminum bronze soldering and aluminium constructed of aluminium；2nd, with the addition of ceric fluoride (CeF4) and greatly reduce the usage amount of rubidium fluoride RbF (RbF)；3rd, preparation process is simple, quality controllable, stable performance.
Description
Technical field：The invention belongs to the brazing material field of nonmetallic materials class, and in particular to one kind can brazed aluminum-
The caesium rubidium brazing flux containing ceric fluoride of steel, Solder for Al-Cu Joint Welding and aluminium-aluminium.
Background technology：For the connection of aluminium-steel foreign material (i.e. two kinds different materials), soldering has more advantage.Soldering
When, can whether solder can soak on mother metal, sprawl, flowing, be the matter of utmost importance that realize mother metal " being reliably connected ", and brazing flux
It is then that can solder soak on mother metal, sprawl, flow when solving soldering, realizes the key that of the same race or foreign material is reliably connected
Material.
It is well known that the oxide of aluminum alloy surface is mainly Al2O3, MgO, MnO, CuO, SiO2 etc., the oxygen of steel surface
Compound is mainly FeO, Fe2O3, NiO, Cr2O3 etc., and the oxide of copper alloy surface is mainly CuO, Cu2O, ZnO etc..It is existing
Result of study show, want using a kind of brazing flux to be difficult while removing aluminium alloy, steel, the oxide of copper alloy surface.
The applicant has carried out literature search, and in published Chinese patent literature, such as CN201310445105.3 is pushed away
" a kind of stainless steel and the New type soldering flux of aluminium soldering " recommended, its constituent includes：Ptfe aluminum potassium+potassium hexafluoroaluminate
(KAlF4+K3AlF6) eutectic, zinc fluoride (ZnF2), copper fluoride (CuF2), tin fluoride (SnF4).CN201410076059.9
A kind of the brazing flux containing caesium rubidium of soldering aluminum steel and aluminum bronze " can " be disclosed, it is characterized in that being matched by molal quantity：0.01 mole (i.e.
Mol, similarly hereinafter)~0.56 mole of rubidium fluoride RbF (RbF), 0.15 mole~0.58 mole of cesium fluoride (CsF), 0.001 mole~
0.25 mole of aluminium hydroxide (Al (OH) 3), 0.001 mole~0.2 mole of potassium fluoride (KF), 0.002 mole~0.05 rubs
Your gallium fluoride (GaF3), 0.001 mole~0.025 mole of lithium fluoride (LiF), 0.001 mole~0.025 mole of fluorination
Boron (BF3), balance of aluminum fluoride (AlF3).Mol ratio between wherein GaF3 and LiF, BF3 is the ︰ of GaF3 ︰ LiF ︰ BF3=2 ︰ 1
1。
CN201410752345.2 discloses a kind of caesium rubidium brazing flux containing gallium oxide, it is characterised in that rubbed with one by molal quantity
You are at meter proportioning：0.12 mole~0.5 mole of rubidium fluoride RbF (RbF), 0.12 mole~0.5 mole of cesium fluoride (CsF),
0.001 mole~0.2 mole of aluminum oxide (Al2O3), 0.001 mole~0.02 mole of potassium fluoride (KF), 0.0001 mole
~0.02 mole of gallium oxide (Ga2O3), 0.159 mole~0.479 aluminum fluoride (AlF3).
CN201610145151.5 discloses a kind of caesium rubidium brazing flux containing zinc fluoroborate, and its component is by weight percent
(wt.%) meter is：0.001~0.01% rubidium fluoride RbF (RbF), 10.0~50.0% cesium fluoride (CsF), 0.01~3.0%
Aluminium hydroxide (Al (HO) 3), 0.01~5.0% potassium fluoride (KF), 0.001~0.25% zinc fluoroborate (Zn (BF4)
2), balance of aluminum fluoride (AlF3).
It is " each favourable although above-mentioned brazing flux can realize being reliably connected for " Solder for Al-Cu Joint Welding ", " aluminium-steel " and " aluminium-aluminium "
Disadvantage ", however it remains many not enough and need improvements.Therefore, a kind of activity of research and development is higher (is embodied in wetting and spreading
Can be more preferably) and be applicable to the brazing flux of " Solder for Al-Cu Joint Welding ", " aluminium-steel " and " aluminium-aluminium " soldering and seem particularly urgent, this invention " contains
The caesium rubidium brazing flux of ceric fluoride ", is to be completed under this technical background.
The content of the invention：
The purpose of this invention is to provide one kind can be while meeting aluminium-steel, Solder for Al-Cu Joint Welding soldering and can take into account " aluminium-aluminium " structure
Brazing requirements and have " more high activity " New type soldering flux.
A kind of caesium rubidium brazing flux containing ceric fluoride, it is characterised in that (wt.%) is counted by weight percent, chemical analysis is：
0.02~0.5% rubidium fluoride RbF (RbF), 20.0~50.0% cesium fluoride (CsF), 0.01~2.0% aluminium hydroxide (Al
(HO) 3), 0.01~1.0% potassium fluoride (KF), 0.001~0.05% ceric fluoride (CeF4), balance of aluminum fluoride
(AlF3)。
The present invention using commercially available rubidium fluoride RbF (RbF), cesium fluoride (CsF), aluminium hydroxide (Al (HO) 3), potassium fluoride (KF),
Ceric fluoride (CeF4), aluminum fluoride (AlF3), match, by mechanical mix techniques according to shown in the present invention, you can needed for obtaining
The product wanted.
Effect of the invention is that：1st, activity higher is respectively provided with aluminium alloy, Q235 steel, is embodied in " equivalent
" solder have bigger spreading area, can simultaneously meet the brazing requirements of aluminium-steel, Solder for Al-Cu Joint Welding soldering and aluminium-constructed of aluminium.This
Invention brazing flux coordinates Zn85-Al15 solders, spreading property of the Al88-Si12 solders on 5052 aluminium alloys, Q235 steel (to sprawl face
Product) spreading property that is superior to the existing solder suitable for given by aluminium-steel, the patent of invention of Solder for Al-Cu Joint Welding soldering (sprawls face
Product), test data is referring to Fig. 1；Additionally, in " brazed seam shear strength test data " listed by Fig. 1, being coordinated using brazing flux of the present invention
During the combination soldering of two kinds of different materials of " 5052 aluminium alloy plate+Q235 steel plates ", " 6063 aluminium alloy plate+T2 red coppers ", embodiment 1 to
Embodiment 6, to the result of the test numerical value of comparative example 3, in " the same level scope " of 130MPa~150MPa, is said with comparative example 1
The brazed seam mechanical property of bright brazing flux of the present invention is better than existing brazing flux.2nd, the technical scheme that the present invention is provided is relative to existing skill
Art, most outstanding feature (are also stated in CsAlF4 (can also be expressed as CsF-AlF3), the KCsAlF4 of existing document report
It is KF-CsF-AlF3) on the basis of brazing flux and CsF-RbF-AlF3, with the addition of ceric fluoride (CeF4) and greatly reduce fluorination
The usage amount of rubidium (RbF).The addition of ceric fluoride, is possessing CsAlF4, KCsAlF4, CsF-RbF-AlF3 and Ga2O3-
CsF-RbF-AlF3 brazing fluxes can also be provided with more excellent going on the basis of brazed aluminum-steel, Solder for Al-Cu Joint Welding, the ability of aluminium-aluminium
Except the ability of the oxide such as aluminium alloy, FeO, Fe2O3, NiO, Cr2O3 of steel surface, flux activity are higher, show solder and exist
Spreading area increase on mother metal.3rd, preparation process is simple of the present invention, quality controllable, stable performance, and activity is higher.Produce
Caesium rubidium brazing flux containing ceric fluoride, coordinates Zn85-Al15 solders, Al88-Si12 solders, use gas brazing, furnace brazing with
And the mode of heating soldering fine aluminium-fine aluminium same metal material such as induction brazing, Solder for Al-Cu Joint Welding foreign material, aluminium-steel foreign material and
During aluminium-aluminum alloy materials, solder has excellent wetting, spreading property and permeance property on mother metal, and Joint intensity is reachable
130MPa~150MPa.The whole machine industry of air-conditioning, refrigerator, the refrigeration row such as accessory industry and track traffic, energy industry can be met
The need for industry low cost, high reliability green manufacturing.Due to using brazing flux of the invention, soldering fine aluminium and aluminium alloy hold very much
Easily, in other words, can soldering Solder for Al-Cu Joint Welding, aluminium-steel brazing flux typically can soldering fine aluminium and aluminium alloy, so, the adhesion test of Fig. 1 institutes
Data do not list the brazed seam shear strength test data of fine aluminium-fine aluminium soldered fitting again.
Compared with research in the past, creativeness of the invention is：
(1) it is found that ceric fluoride (CeF4) has special " chemical reaction " wetting action.This chemical reaction wetting action
Can further improve " the striping ability " of CsF-RbF-AlF3 brazing fluxes, the wetting and spreading performance on 5052 aluminium alloys, Q235 steel
More it is better than existing similar brazing flux.
A kind of caesium rubidium brazing flux containing gallium oxide disclosed in CN201410752345.2, is, using the kelvin effect of Ga2O3, to make
Obtain Ga2O3 " quick " to flow, and then promote the flowing of CsF-RbF-AlF3 brazing fluxes, improve spreading ability and the paving of solder
Developable surface is accumulated；A kind of caesium rubidium brazing flux containing zinc fluoroborate disclosed in CN201610145151.5, Zn (BF4) 2 is by " reaction profit
It is wet " further increase the activity of CsF-RbF-AlF3 brazing fluxes.
In the present invention, it is found through experiments that, ceric fluoride (CeF4) has the performance more excellent than Zn (BF4) 2.Four
650 DEG C of cerium fluoride fusing point, in heating in vacuum to not decomposing at 800~850 DEG C, relatively stablizes.Ceric fluoride easily quiltHydrogen、Ammonia
It is with aqueous vapour reducingCerous fluoride, generation is acted on vapor during high temperatureCeria(referring tohttp:// Baike.baidu.com/item/ ceric fluorides/Physico-chemical property).Micro ceric fluoride (0.001~0.05%) is added with CsF-
During RbF-AlF3 is for the brazing flux of " matrix ", (experiment determines brazing flux fusing point at a temperature of the normal melt of CsF-RbF-AlF3 brazing fluxes
About 450 DEG C~465 DEG C), i.e., can melt, chemically react.Either gas brazing or furnace brazing, soldering is heated
Cheng Zhong, cannot avoid havingHydrogen、AmmoniaProduced with vapor (above-mentioned gas come from brazing flux, air or heating combustion gas),
And these gases for seeming " unimportant " give the chance of ceric fluoride " film reaction is removed in participation ".In present claims 1
In, 0.001% ceric fluoride can produce " notable " effect, and solder spreading area improves about 8%.But, excessive four
Cerium fluoride then can improve the fusion temperature of CsF-RbF-AlF3 brazing fluxes, be unfavorable for " weak specification " soldering of slow heat.By
Optimizing components, to add 0.05% for the upper limit is optimal.Ceric fluoride compared withAmmonium fluoroborateAnother more excellent performance is：Baidu
Encyclopaedia introduces ceric fluoride " the easy moisture absorption ", is insoluble in water；ButAmmonium fluoroborateBut it is " easy deliquescence ".Baidu " moisture absorption and deliquescence
Difference " (referring tohttps://zhidao.baidu.com/question/585116551.html), the answer for being given is " general
For, the moisture absorption is physical change, refers to the moisture in dry material absorbing air and becomes moist through, but chemical change does not occur.
And after deliquescence to refer to then dry matter absorb moisture and water there occurs that chemical reaction generates new material.”.This illustrates this power
Profit requires that 1 brazing flux formula components are more stable, and long shelf-life is unlikely to deteriorate, and this is extremely important for big industrial production
's.
(2) it is found that micro ceric fluoride has the chemical reaction mechanism of " more high activity ", theoretically explains addition four
After cerium fluoride the reason for brazing flux " activity is improved ", so that it is preferred that the addition scope of ceric fluoride and RbF is determined.
It is as follows with the reaction equation of water according to the ceric fluoride that chemical textbook and document are given：
CeF4+H2O=CeO2+4HF (1)
In above-mentioned reaction, the CeO of generation2Brazing flux residue can be entered and further react with other residues and
Play a part of " hydrotropy ", and HF then plays " catalytic action ", so that the relatively existing similar brazing flux of the brazing flux of present claims 1
(" the caesium rubidium brazing flux containing zinc fluoroborate " as disclosed in CN201610145151.5) has more preferable spreading property.HF、CeO2
And/or CeF4For CsF-AlF3The improvement of brazing flux weldering property energy, the influence for improving, have just reported in the research of early stage
Road (with reference to Xue Songbai etc., the reaction mechanism of LY12 Process on Aluminum Alloy Oxidation Film and brazing flux,《China YouSe Acta Metallurgica Sinica》, 2004,
Vol.14(4)：543-547. " ..., the high activity of brazing flux and the presence of the compound such as NH4F, NH4AlF4 and compound molten salt bath
Relevant, the presence of which can improve CsF-AlF3The striping ability of brazing flux, and the generation of HF is then to induce and accelerate reaction, improve
Dissolve the key of striping ability；There is not enrichment phenomenon at interface in rare earth element La, and micro rare earth fluoride is then played
The effect of " hydrotropy "."), but, how to be added in CsF-AlF3 brazing fluxes, especially by complicated chemical reaction process shape
Into HF, CeO2, the purpose of CsF-AlF3 flux activities is improved so as to reach, this is " creativeness " of the invention place, is just
It is " reaching the same goal by different routes ".
Additionally, RbF is added in CsF-AlF3 brazing fluxes can significantly improve the wetting and spreading performance of CsF-AlF3 brazing fluxes, but
It it is expensive (current market price of RbF is about 5-8 times of CsF) in view of RbF, addition should not be too high.In this right
It is required that in 1, the ceric fluoride (CeF4) of addition 0.001~0.05%, you can so that the content of rubidium fluoride RbF (RbF) only have 0.02~
In the case of 0.5%, brazing flux matches somebody with somebody the spreadability of Zn85-Al15 solders, Al88-Si12 solders on 5052 aluminium alloys, Q235 steel
Energy (spreading area) is superior to the spreadability of the existing solder suitable for given by aluminium-steel, the patent of invention of Solder for Al-Cu Joint Welding soldering
Can, it is in particular in that the spreading area of solder is greater than about 8% (referring to Fig. 1).
Comparative example 1 is to comparative example 3 in Fig. 1, be the embodiment 1 in CN201610145151.5 to embodiment 3, its composition is matched somebody with somebody
Than for：
The embodiment 1 of comparative example 1, a kind of caesium rubidium brazing flux containing zinc fluoroborate, its component is by weight percent (wt.%)
Meter is：0.001% rubidium fluoride RbF (RbF), 50.0% cesium fluoride (CsF), 0.01% aluminium hydroxide (Al (HO) 3), 5.0%
Potassium fluoride (KF), 0.001% zinc fluoroborate (Zn (BF4) 2), balance of aluminum fluoride (AlF3).
The embodiment 2 of comparative example 2, a kind of caesium rubidium brazing flux containing zinc fluoroborate, its component is by weight percent (wt.%)
Meter is：0.01% rubidium fluoride RbF (RbF), 10.0% cesium fluoride (CsF), 3.0% aluminium hydroxide (Al (HO) 3), 0.01%
Potassium fluoride (KF), 0.25% zinc fluoroborate (Zn (BF4) 2), balance of aluminum fluoride (AlF3).
The embodiment 3 of comparative example 3, a kind of caesium rubidium brazing flux containing zinc fluoroborate, its component is by weight percent (wt.%)
Meter is：0.005% rubidium fluoride RbF (RbF), 30.0% cesium fluoride (CsF), 1.5% aluminium hydroxide (Al (HO) 3), 2.5%
Potassium fluoride (KF), 0.05% zinc fluoroborate (Zn (BF4) 2), balance of aluminum fluoride (AlF3).
Matched by mentioned component and can be seen that ceric fluoride (CeF in present claims 14) addition, substitute fluoboric acid
In the case that zinc (Zn (BF4) 2), other compositions change less, the spreading property of brazing flux, brazed seam mechanical property have and significantly carry
Rise, absolutely prove that the present invention has significant technological progress.
According to the analysis to result of the test and the analysis of the mechanism to ceric fluoride role, the present invention further optimization
The addition scope of ceric fluoride and RbF is determined, so that brazing flux of the invention has more excellent performance.
Brief description of the drawings：
Accompanying drawing 1 is spreading property (spreading area) test data of brazed seam shear strength test data of the present invention and solder.
Specific embodiment：
The mass percent proportioning of " the caesium rubidium brazing flux containing ceric fluoride " of the invention, describes specific reality of the invention
Apply mode.
Embodiment 1：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.02% rubidium fluoride RbF (RbF), 50.0% cesium fluoride (CsF), 0.01% aluminium hydroxide (Al (HO) 3), 1.0% fluorination
Potassium (KF), 0.001% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Embodiment 2：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.5% rubidium fluoride RbF (RbF), 20.0% cesium fluoride (CsF), 2.0% aluminium hydroxide (Al (HO) 3), 0.01% fluorination
Potassium (KF), 0.05% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Embodiment 3：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.3% rubidium fluoride RbF (RbF), 40.0% cesium fluoride (CsF), 1.0% aluminium hydroxide (Al (HO) 3), 0.5% potassium fluoride
(KF), 0.02% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Embodiment 4：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.05% rubidium fluoride RbF (RbF), 35.5% cesium fluoride (CsF), 1.2% aluminium hydroxide (Al (HO) 3), 0.05% fluorination
Potassium (KF), 0.03% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Embodiment 5：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.25% rubidium fluoride RbF (RbF), 45.8% cesium fluoride (CsF), 0.6% aluminium hydroxide (Al (HO) 3), 0.7% fluorination
Potassium (KF), 0.003% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Embodiment 6：A kind of caesium rubidium brazing flux containing ceric fluoride, (wt.%) meter by weight percent, chemical analysis is：
0.45% rubidium fluoride RbF (RbF), 25.2% cesium fluoride (CsF), 1.3% aluminium hydroxide (Al (HO) 3), 0.09% fluorination
Potassium (KF), 0.025% ceric fluoride (CeF4), balance of aluminum fluoride (AlF3).
The new caesium rubidium brazing flux containing ceric fluoride that said ratio is obtained, flame pricker is carried out using propane as fuel gas
Weldering, coordinates Zn85-Al15 solders, Al88-Si12 solders, purple with 5052 aluminium alloy plate+Q235 steel plates, 6063 aluminium alloy plate+T2
Copper is combined, according to GB/T 11363-2008《Soldering joint strength test method》Tested, brazed seam shearing strength is respectively reached
130MPa~150MPa.
Claims (1)
1. a kind of caesium rubidium brazing flux containing ceric fluoride, it is characterised in that (wt.%) meter by weight percent, chemical analysis is：
0.02~0.5% rubidium fluoride RbF (RbF), 20.0~50.0% cesium fluoride (CsF), 0.01~2.0% aluminium hydroxide (Al
(HO) 3), 0.01~1.0% potassium fluoride (KF), 0.001~0.05% ceric fluoride (CeF4), balance of aluminum fluoride
(AlF3)。
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| CN201611214202.1A CN106736046A (en) | 2016-12-26 | 2016-12-26 | Caesium rubidium brazing flux containing ceric fluoride |
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| CN201611214202.1A CN106736046A (en) | 2016-12-26 | 2016-12-26 | Caesium rubidium brazing flux containing ceric fluoride |
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