CN105499827A - Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux - Google Patents

Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux Download PDF

Info

Publication number
CN105499827A
CN105499827A CN201610065943.1A CN201610065943A CN105499827A CN 105499827 A CN105499827 A CN 105499827A CN 201610065943 A CN201610065943 A CN 201610065943A CN 105499827 A CN105499827 A CN 105499827A
Authority
CN
China
Prior art keywords
aluminum
brazing flux
powder
brazing
low melting
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.)
Pending
Application number
CN201610065943.1A
Other languages
Chinese (zh)
Inventor
程方杰
何培龙
赵欢
肖兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin University
Original Assignee
Tianjin University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin University filed Critical Tianjin University
Priority to CN201610065943.1A priority Critical patent/CN105499827A/en
Publication of CN105499827A publication Critical patent/CN105499827A/en
Pending legal-status Critical Current

Links

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
    • B23K35/24—Selection of soldering or welding materials proper
    • 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
    • B23K35/40—Making wire or rods for soldering or welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetallic Welding Materials (AREA)

Abstract

The invention provides a low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and an aluminum alloy, which comprises the components: CsAlF4, Cs2AlF5 and Cs2GeF6, wherein mass percent ratios of the total contents of all elements in components are as follows: Al of 8.45-9.18%, Cs of 57.47-62.41%, F of 26.08-28.31% and Ge of 0.10-8.00%; the mass ratio of Al to Cs to F is 1 to 6.80 to 3.08. The invention also provides a preparation method of the low-melting-point intermediate-temperate aluminum brazing flux. The low-melting-point intermediate-temperate aluminum brazing flux has the beneficial effects that the melting point is 430-480 DEG C, and the brazing temperature can be controlled to be within 520 DEG C; the low-melting-point intermediate-temperate aluminum brazing flux can be used for brazing the aluminum alloy having the relatively low overburning temperature, widening the application range of brazing material, and brazing majority of heat-treatable aluminum alloy materials.

Description

Warm aluminum brazing flux and preparation method in the low melting point of soldering Aluminum-aluminum alloy
Technical field
The present invention relates to technical field of soldering materials, particularly relate to warm aluminum brazing flux and preparation method in a kind of low melting point of soldering Aluminum-aluminum alloy.
Background technology
Aluminium alloy is due to excellent physics, chemical property, and good processing, surface treatment and corrosion resisting property, occupy an important position and apply widely in the modern industry material.Soldering processes are the prefered methods realizing the connection of various Complex Aluminum Alloy device precision.In brazing process, usually adopt brazing flux to the oxide-film removing aluminium surface and the interfacial tension reduced between melt solder and mother metal.
The maximum deficiency of conventional Nocolok method application potassium aluminum fluoride flux is that brazing flux fusion temperature is too high, exceedes the burnt temperature of most of aluminium alloy as Al-Cu system, Al-Si-Mg system etc.A kind of insoluble brazing flux of middle temperature having reliability application prospect is that Suzuki is to CsF-AlF 3the application of system.Result of study for many years and knowhow all show, adopt cesium salt fluoride flux (CsF-AlF 3or KF-CsF-AlF 3) the corrosion-free soldering processes of middle temperature, be solve the most promising technique of a large amount of heat treatment reinforcement aluminium alloy (aluminium alloy containing magnesium of particularly extremely difficult soldering) component brazing.But the theoretical fusing point 471 DEG C of fluoaluminic acid cesium salt brazing flux, the matching of its melting range and conventional Zn-Al solder is bad, and brazing temperature is too high thus cause can to implement soldering by heat-treatable aluminum alloy in a large number.Thus develop corrosion-free, the brazing flux that is insoluble in water that fusing point is lower, become the importance of aluminum brazing flux development over more than ten years.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides warm aluminum brazing flux and preparation method in a kind of low melting point of soldering Aluminum-aluminum alloy, do not mate with conventional Zn-Al solder melting range to solve, brazing temperature is too high and cause can to implement the problem of soldering by heat-treatable aluminum alloy in a large number.
To achieve these goals, the technical solution adopted in the present invention is to provide warm aluminum brazing flux in a kind of low melting point of soldering Aluminum-aluminum alloy, wherein: in described low melting point, warm aluminum brazing flux component comprises CsAlF 4, Cs 2alF 5and Cs 2geF 6, in described middle temperature aluminum brazing flux component, the mass percentage content of each element total content is respectively: element aluminum (Al): 8.45% ~ 9.18%; Element caesium (Cs): 57.47% ~ 62.41%; Element fluorine (F): 26.08% ~ 28.31%; Elements germanium (Ge): 0.10% ~ 8.00%, described element aluminum (Al), element caesium (Cs) meet ratio 1:6.80:3.08 with the mass ratio of element fluorine (F).
Provide the preparation method of warm aluminum brazing flux in a kind of low melting point of soldering Aluminum-aluminum alloy simultaneously.
The invention has the beneficial effects as follows:
1, the fusing point of brazing flux of the present invention is 430 ~ 480 DEG C, and brazing temperature can control, within 520 DEG C, to can be applicable to the aluminium alloy brazing that burnt temperature is lower;
2, the activity of brazing flux of the present invention and traditional fluoaluminic acid caesium binary system brazing flux CsF-AlF 3quite active, but fusing point is further reduced, and has special active function to aluminium alloy containing magnesium;
3, the matching of the melting range of brazing flux of the present invention and conventional Zn-Al solder is better, expands the scope of application of Zn-Al solder, can the most of heat treatable aluminum alloy materials of soldering.
Detailed description of the invention
Warm aluminum brazing flux and preparation method in the low melting point of soldering Aluminum-aluminum alloy of the present invention are further illustrated in conjunction with the embodiments.
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, the design philosophy of warm aluminum brazing flux and preparation method is based on the existence of Al-Si low melting eutectics, substantially improve the high temperature active of Nocolok brazing flux, the low melting eutectics effect of Al-Ge at 420 DEG C also has certain effect for the activity improvement of cesium salt brazing flux in theory.Carry out large quantity research according to this thinking, but do not found that the Al-Ge low melting eutectics reaction in imagining occurs.But, be not intended to find a kind of new brazing flux system continuous change in brazing flux synthesis sequential process, i.e. fluogermanic acid caesium of the present invention-fluoaluminic acid caesium brazing flux system.Brazing flux system of the present invention has the temperature advantage of low melting point characteristic and not normal rule CsF-AlF 3the activity of binary brazing flux system.
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, warm aluminum brazing flux component comprises CsAlF 4, Cs 2alF 5and Cs 2geF 6, in described middle temperature aluminum brazing flux component, the mass percentage content of each element total content is respectively: element aluminum (Al): 8.45% ~ 9.18%; Element caesium (Cs): 57.47% ~ 62.41%; Element fluorine (F): 26.08% ~ 28.31%; Elements germanium (Ge): 0.10% ~ 8.00%, described element aluminum (Al), element caesium (Cs) meet ratio 1:6.80:3.08 with the mass ratio of element fluorine (F).
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, the preparation method of warm aluminum brazing flux comprises the following steps:
1) described middle temperature aluminum brazing flux is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, calculate in the ratio of the mass percent of each element total content in above-mentioned middle temperature aluminum brazing flux component, weigh above-mentioned raw-material Al (OH) 3powder, CsCO 3powder, GeO 2powder and 10% concentration hydrogen fluorspar acid solution.
2) by step 1) Al (OH) that takes 3powder puts into the plastic conical bottle filling distilled water, and water temperature remains on 80 ~ 85 DEG C, heating water bath 15min on hot type magnetic stirring apparatus.
3) by step 1) the active material GeO that takes 2dissolve with hydrofluoric acid solution, pour step 2 into) in solution, fully stir.
4) by step 1) CsCO that takes 3powder dries 30min at 300 DEG C of temperature, pours step 3 into) in solution, fully stir.
5) after 15min by step 3) solution pours in plastic culture dish, natural air drying, grinding, namely form warm aluminum brazing flux in the low melting point of described soldering Aluminum-aluminum alloy, described middle temperature aluminum brazing flux fusing point is 430 ~ 480 DEG C.
The chemical reaction process occurred in warm aluminum brazing flux preparation process in the low melting point of soldering Aluminum-aluminum alloy of the present invention is analyzed as follows:
GeO 2al (OH) is added to after powder and 10% concentration hydrogen fluoric acid react 3in solution, unstable H 2geF 6react with CsF and create cenotype Cs 2geF 6, as reaction equation (1) ~ (4).The CsAlF when CsF is a small amount of 4preferential generation (5), thus generate Cs 2alF 5amount just minimizing (6) naturally.When Ge content is enough high, in brazing flux principal phase, just no longer there is Cs 2alF 5.
GeO 2+6HF→H 2GeF 6+2H 2O(1)
Al(OH) 3+3HF→AlF 3+3H 2O(2)
Cs 2CO 3+2HF→2CsF+H 2O+CO 2(3)
2CsF+H 2GeF 6→Cs 2GeF 6+2HF(4)
AlF 3+ CsF → CsAlF 4(CsF is a small amount of) (5)
AlF 3+ 2CsF → Cs 2alF 5(CsF volume) (6)
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, warm aluminum brazing flux component comprises CsAlF 4, Cs 2alF 5and Cs 2geF 6, in described middle temperature aluminum brazing flux component, the mass percentage content of each element total content is respectively: element aluminum (Al): 8.45% ~ 9.18%; Element caesium (Cs): 57.47% ~ 62.41%; Element fluorine (F): 26.08% ~ 28.31%; Elements germanium (Ge): 0.10% ~ 8.00%, described element aluminum (Al), element caesium (Cs) meet ratio 1:6.80:3.08 with the mass ratio of element fluorine (F).When in described middle temperature aluminum brazing flux component, elements germanium (Ge) total content is 4.00 ~ 8.00%, this brazing flux is with CsAlF 4and Cs 2geF 6for principal phase, fusing point is than traditional CsF-AlF 3brazing flux has significant reduction.
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, the preparation method of warm aluminum brazing flux comprises the following steps:
1) described middle temperature aluminum brazing flux is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, calculate in ratio described in claim 1, weigh above-mentioned raw-material Al (OH) 3powder, CsCO 3powder, GeO 2powder and 10% concentration hydrogen fluorspar acid solution.
2) by step 1) Al (OH) that takes 3powder puts into the plastic conical bottle filling distilled water, and water temperature remains on 80 ~ 85 DEG C, heating water bath 15min on hot type magnetic stirring apparatus.
3) by step 1) the active material GeO that takes 2dissolve with hydrofluoric acid solution, pour step 2 into) in solution, fully stir.
4) by step 1) CsCO that takes 3powder dries 30min at 300 DEG C of temperature, pours step 3 into) in solution, fully stir.
5) after 15min by step 3) solution pours in plastic culture dish, natural air drying, grinding, namely forms warm aluminum brazing flux in the low melting point of described soldering Aluminum-aluminum alloy.
Embodiment 1:
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, warm aluminum brazing flux component is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, and the mass percentage content of each element total content is respectively: element aluminum (Al): 9.18%; Element caesium (Cs): 62.41%; Element fluorine (F): 28.31%; Elements germanium (Ge): 0.10%.
Preparation method comprises the following steps:
1) calculate by described mass percent, weigh above-mentioned raw-material Al (OH) 3powder, CsCO 3powder, GeO2 powder and 10% concentration hydrogen fluorspar acid solution.
2) by step 1) Al (OH) that takes 3powder puts into the plastic conical bottle filling distilled water, and water temperature remains on 80 ~ 85 DEG C, heating water bath 15min on hot type magnetic stirring apparatus.
3) by step 1) the active material GeO that takes 2dissolve with hydrofluoric acid solution, pour step 2 into) in solution, fully stir.
4) by step 1) CsCO that takes 3powder dries 30min at 300 DEG C of temperature, pours step 3 into) in solution, fully stir.
5) after 15min by step 3) solution pours in plastic culture dish, natural air drying, grinding, namely forms warm aluminum brazing flux in the low melting point of described soldering Aluminum-aluminum alloy.
Described middle temperature aluminum brazing flux thing phase component is CsAlF through XRD determining 4, Cs2AlF 5and Cs 2geF 6, the solid, liquid phase line of brazing flux fusing is determined as 470.8 ~ 479.6 DEG C through DSC.
Embodiment 2:
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, warm aluminum brazing flux component is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, and the mass percentage content of each element total content is respectively: element aluminum (Al): 8.82%; Element caesium (Cs): 59.97%; Element fluorine (F): 27.21%; Elements germanium (Ge): 4.00%.
Preparation method is: preparation method is identical with embodiment 1.
Described middle temperature aluminum brazing flux thing phase component is with CsAlF through XRD determining 4and Cs 2geF 6for principal phase, the solid, liquid phase line of brazing flux fusing is determined as 432.5 ~ 438.4 DEG C through DSC.
Embodiment 3:
In the low melting point of soldering Aluminum-aluminum alloy of the present invention, warm aluminum brazing flux component is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, and the mass percentage content of each element total content is respectively: element aluminum (Al): 8.45%; Element caesium (Cs): 57.47%; Element fluorine (F): 26.08%; Elements germanium (Ge): 8.00%.
Preparation method is: preparation method is identical with embodiment 1.
Described middle temperature aluminum brazing flux thing phase component is with CsAlF through XRD determining 4and Cs 2geF 6for principal phase, the solid, liquid phase line of brazing flux fusing is determined as 434.6 ~ 446.6 DEG C through DSC.

Claims (3)

1. a warm aluminum brazing flux in the low melting point of soldering Aluminum-aluminum alloy, is characterized in that: in described low melting point, warm aluminum brazing flux component comprises CsAlF 4, Cs 2alF 5and Cs 2geF 6, in described middle temperature aluminum brazing flux component, the mass percentage content of each element total content is respectively: element aluminum (Al): 8.45% ~ 9.18%; Element caesium (Cs): 57.47% ~ 62.41%; Element fluorine (F): 26.08% ~ 28.31%; Elements germanium (Ge): 0.10% ~ 8.00%, described element aluminum (Al), element caesium (Cs) meet ratio 1:6.80:3.08 with the mass ratio of element fluorine (F).
2. warm aluminum brazing flux in the low melting point of soldering Aluminum-aluminum alloy according to claim 1, is characterized in that: when in described brazing flux component, elements germanium (Ge) total content is 4.00 ~ 8.00%, described aluminum brazing flux is with CsAlF 4and Cs 2geF 6for principal phase.
3. a preparation method for warm aluminum brazing flux in the low melting point of soldering Aluminum-aluminum alloy described in claim 1, comprises the following steps:
1) described middle temperature aluminum brazing flux is to analyze the Al (OH) of pure level 3powder, CsCO 3powder, GeO 2powder and concentration 10% hydrofluoric acid solution are raw materials, calculate in ratio described in claim 1, weigh above-mentioned raw-material Al (OH) 3powder, CsCO 3powder, GeO 2powder and 10% concentration hydrogen fluorspar acid solution;
2) by step 1) Al (OH) that takes 3powder puts into the plastic conical bottle filling distilled water, and water temperature remains on 80 ~ 85 DEG C, heating water bath 15min on hot type magnetic stirring apparatus;
3) by step 1) the active material GeO that takes 2dissolve with hydrofluoric acid solution, pour step 2 into) in solution, fully stir;
4) by step 1) CsCO that takes 3powder dries 30min at 300 DEG C of temperature, pours step 3 into) in solution, fully stir;
5) after 15min by step 3) solution pours in plastic culture dish, natural air drying, grinding, namely form warm aluminum brazing flux in the low melting point of described soldering Aluminum-aluminum alloy, described middle temperature aluminum brazing flux fusing point is 430 ~ 480 DEG C.
CN201610065943.1A 2016-02-01 2016-02-01 Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux Pending CN105499827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610065943.1A CN105499827A (en) 2016-02-01 2016-02-01 Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610065943.1A CN105499827A (en) 2016-02-01 2016-02-01 Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux

Publications (1)

Publication Number Publication Date
CN105499827A true CN105499827A (en) 2016-04-20

Family

ID=55708331

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610065943.1A Pending CN105499827A (en) 2016-02-01 2016-02-01 Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux

Country Status (1)

Country Link
CN (1) CN105499827A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111039314A (en) * 2019-12-27 2020-04-21 湖南有色郴州氟化学有限公司 Preparation method of medium-temperature brazing material cesium fluoroaluminate

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101346209A (en) * 2005-12-22 2009-01-14 凯密特尔有限责任公司 Amorphous caesium aluminium fluoride complex, its production and use
JP2009220174A (en) * 2008-02-22 2009-10-01 Nisshin Steel Co Ltd Flux composition
CN102513730A (en) * 2012-01-04 2012-06-27 天津大学 Aluminum-magnesium deoxidized welding wire used for carbon dioxide arc welding and preparation method thereof
CN102935558A (en) * 2012-12-04 2013-02-20 郑州机械研究所 Self-brazing material for welding aluminum-copper member
JP2013146755A (en) * 2012-01-19 2013-08-01 Sumitomo Light Metal Ind Ltd Aluminum alloy brazing sheet and method for manufacturing the same, and method for brazing aluminum-made heat exchanger
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
WO2014128880A1 (en) * 2013-02-21 2014-08-28 住友軽金属工業株式会社 Aluminum alloy brazing sheet, method for producing same, and method for brazing heat exchanger formed of aluminum
CN104191111A (en) * 2014-08-15 2014-12-10 郑州机械研究所 Aluminum-silicon seamless flux-cored wire containing germanium and hafnium and preparing method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101346209A (en) * 2005-12-22 2009-01-14 凯密特尔有限责任公司 Amorphous caesium aluminium fluoride complex, its production and use
JP2009220174A (en) * 2008-02-22 2009-10-01 Nisshin Steel Co Ltd Flux composition
CN102513730A (en) * 2012-01-04 2012-06-27 天津大学 Aluminum-magnesium deoxidized welding wire used for carbon dioxide arc welding and preparation method thereof
JP2013146755A (en) * 2012-01-19 2013-08-01 Sumitomo Light Metal Ind Ltd Aluminum alloy brazing sheet and method for manufacturing the same, and method for brazing aluminum-made heat exchanger
CN102935558A (en) * 2012-12-04 2013-02-20 郑州机械研究所 Self-brazing material for welding aluminum-copper member
WO2014128880A1 (en) * 2013-02-21 2014-08-28 住友軽金属工業株式会社 Aluminum alloy brazing sheet, method for producing same, and method for brazing heat exchanger formed of aluminum
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
CN104191111A (en) * 2014-08-15 2014-12-10 郑州机械研究所 Aluminum-silicon seamless flux-cored wire containing germanium and hafnium and preparing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111039314A (en) * 2019-12-27 2020-04-21 湖南有色郴州氟化学有限公司 Preparation method of medium-temperature brazing material cesium fluoroaluminate

Similar Documents

Publication Publication Date Title
CN101204762B (en) Al and Al alloy soft braze welding metal displaced type unleaded welding soldering flux
CN102312104A (en) Refining agent for aluminium and aluminium alloy melting
CN103692112B (en) Be applicable to carbon steel, stainless steel, Copper and its alloy silver brazing brazing flux
CN102922163B (en) Lead-free aluminum solder wire and preparation method thereof
CN103861912A (en) Aluminum alloy pipe bend forming method
JP6169164B2 (en) Nitrate compositions containing alkali metal carbonates and their use as heat or heat storage media
CN103447715A (en) Sintered flux for use in submerged-arc welding of nickel-based alloy and preparation method
CN104889605B (en) A kind of soldering magnesium and brazing flux used for magnesium alloy and its application
CN105499827A (en) Low-melting-point intermediate-temperate aluminum brazing flux for brazing aluminum and aluminum alloy, and preparation method of low-melting-point intermediate-temperate aluminum brazing flux
CN100564557C (en) Non-sodium is flux and utilizes it to handle the method for molten aluminium alloy
CN100462187C (en) Hard soldering powder for aluminium soldering in air furnace
CN103659054B (en) Be applicable to self-fluxing agent material and the preparation method of the soldering of thin plate Al and Alalloy
Hsu et al. Effect of Cu content on interfacial reactions between Sn (Cu) alloys and Ni/Ti thin-film metallization
CN105755471A (en) Metallographic corrosive agent and corrosion method for titanium-steel composite material
CN106808108A (en) A kind of lead-free aluminum solder wire and preparation method thereof
CN105643145B (en) A kind of brazing flux for magnesium alloy brazing
CN108411122A (en) The fluxing agent of ruthenium and the recovery method of basic solvent and ruthenium are recycled from supported ruthenium series catalysts waste material
CN103589918B (en) A kind of melting technology of end cap alloy
CN105142857B (en) Solder flux composition and brazing sheet
CN107460350A (en) Metallic addition
CN106001999A (en) Soldering flux used for soldering of rare earth magnesium alloy and preparation method
CN111039314A (en) Preparation method of medium-temperature brazing material cesium fluoroaluminate
CN104148827B (en) The middle temperature brazing flux without corrosion of soldering aluminium alloy containing magnesium and preparation method
CN105572118A (en) Analysis method for chromium content in chromium iron alloy and silicon chromium alloy
CN101531951B (en) Water base reflow soldering furnace cleaning agent

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160420