• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1438955 Aluminium brazing fluxes ALCAN RESEARCH & DEVELOPMENT Ltd 26 July 1973 [2 Aug 1972] 36183/72 Heading C7M [Also in Division B3] Al or Al alloy components are brazed together by interposing between the components a layer of an Al alloy solder and a layer of a flux powder comprising a potassium fluoaluminate complex free of unreacted KF and containing reacted KF and AlF 3 in the weight proportions of 40-50: 60-50 and heating to melt the solder and flux. The flux may be made by fusing together Kf and AlF 3 , grinding to -100 mesh and forming an aqueous slurry or K 3 AlF 6 and KAlF 4 may be formed separately and mixed together. 0À5% hydroxymethyl cellulose and up to 5 mole % of an alkali or alkaline earth metal fluoride or ZnF may be added. The flux may be used as an aqueous dispersion, a dispersion in a water dispersible or water soluble resin or mixed with an Al solder alloy and a resin. The solder alloy may contain Al, 10-12% Si and 1-2% Zn. The process may be used in brazing closed heat exchanger assemblies such as motor vehicle radiators and evaporators for air conditioners.
    公开号:SU1094580A3
    申请号:SU731949272
    申请日:1973-08-01
    公开日:1984-05-23
    发明作者:Хрон Джозеф；Артур Иннес Роберт；Томас Тейлор Ян；Роберт Уоллак Эрик；Вильям Дьюинг Эрнест
    申请人:Алкан Рисерч Энд Девелопмент Лимитед (Фирма)；
    IPC主号:
    专利说明:

    with 4 ate
    thirty
    This invention relates to soldering, in particular to flux for soldering aluminum products.
    A known flux for aluminum soldering consisting of a mixture containing 5355% aluminum fluoride and A5-47% potassium fluoride. The components are mixed in a dry state, followed by the addition of water or potassium fluoride is added to an aqueous solution of aluminum fluoride. The resulting paste is dried at a temperature below 200 ° C t1 1.
    The disadvantages of the known flux are its hygroscopicity and the impossibility, therefore, of using it in the form of an aqueous suspension. When brazing with high temperature solder, the closed assemblies of heat exchangers cannot be used resinous binders, since they cannot be completely removed from these places. The preferred binding dim is water, so the flux should be free from this disadvantage. A hygroscopic flux containing water as a binder exerts a strong corrosive effect on the joining surfaces of the material being fed.
    The aim of the invention is to reduce the corrosivity of the flux.
    This goal is achieved in that the flux for soldering aluminum, including aluminum and potassium compounds with fluorine, taken in a ratio of 50-60 wt.% Aluminum fluoride and 40-50 wt.% Potassium fluoride, contains a pre-alloyed mixture crushed to 100-200 broom in the form of an aqueous suspension of the fluoroaluminate potassium complex SKF-AtF KFAEFj.
    The flux consists of a homogeneous mixture - and is free from unreacted KF. The purity of potassium fluoride is not critical, and a technical KF can be used to prepare the flux.
    Aluminum fluoride should be fairly clean. Best results are obtained using pure distilled. To prevent hydrolysis, these components must be dry before fusing.
    Potassium fluoride and aluminum fluoride are ground in a dry form and mixed in an appropriate proportion to obtain, after fusion, a fluoroaluminate potassium complex, free from unreacted potassium fluoride. The fusion is carried out in an oven at 625-650 ° C. The resulting material is ground and mixed with water to form a slurry.
    The advantage of the proposed flux is its use in the form of an aqueous suspension solely because of its low solubility in water with the formation of an inert precipitate. The present invention provides durable, dense, non-corrosive solder joints.
    权利要求:
    Claims (1)
    [1]
    ALGINIA SOLDERING FLUX, including aluminum and potassium compounds with fluorine, taken in an amount of 50-60 Mac.Z aluminum fluoride and 40-50 wt.% Potassium fluoride, characterized in that, in order to reduce corrosion activity, it contains a pre-alloyed mixture , crushed to 100,200 mesh, in the form of an aqueous suspension of potassium fluoroaluminate complex 3KF.A £ F 3 - KF-AEF 3 .
    next
    SP X
    1 1094580 2
    类似技术:
    公开号 | 公开日 | 专利标题
    CA1262227A|1989-10-10|Brazing flux
    US3951328A|1976-04-20|Joining of metal surfaces
    US4579605A|1986-04-01|Flux for brazing the aluminum parts and preparing method of the same
    US6432221B1|2002-08-13|Fluxing agents
    US4556165A|1985-12-03|Method of brazing aluminum employing fluoaluminate flux
    US4689092A|1987-08-25|Brazing flux
    US5232788A|1993-08-03|Aluminum brazing sheet
    SU1094580A3|1984-05-23|Flux for aluminium brazing
    US5785770A|1998-07-28|Brazing flux
    RU2145272C1|2000-02-10|BRAZING METHOD, AQUEOUS SUSPENSION OF FLUX, FLUX FOR BRAZING, PROCESS FOR MAKING FLUX AND METHOD FOR USING IRREVERSIBLY DEHYDRATED K2AlF5
    US6350424B1|2002-02-26|Low-melting potassium fluoroaluminate
    GB2241513A|1991-09-04|Brazing flux containing cystalline aluminium hydroxide or oxide
    JPWO2006104007A1|2008-09-04|Flux powder for brazing aluminum material and method for producing the flux powder
    WO2007131993A1|2007-11-22|Flux for brazing of aluminium
    JP2000015481A|2000-01-18|Brazing composition of aluminum material, aluminum material for brazing, and brazing method of aluminum material
    PL198020B1|2008-05-30|Novel use for complex fluorides
    CN103889647A|2014-06-25|Flux composition and brazing sheet
    US2867037A|1959-01-06|Composition for soldering metal and method for using same
    KR20020008410A|2002-01-30|Components coated with an aluminium-silicon alloy
    US3330028A|1967-07-11|Soldering fluxes and method of soldering with same
    CN103648709B|2016-01-20|The soldering flux of aluminium based material
    EP0225406B1|1990-03-07|Method of brazing aluminium or aluminium alloy parts
    JP2004042086A|2004-02-12|Soldering powder for soldering al material and method for soldering aluminum material using the same powder
    US6010578A|2000-01-04|Flux for brazing aluminum members
    JPH05305480A|1993-11-19|Joining method for aluminum member by torch brazing
    同族专利:
    公开号 | 公开日
    BR7305858D0|1975-03-25|
    DE2338261B2|1976-04-01|
    DE2338261A1|1975-11-27|
    AU5864973A|1975-01-30|
    CH582040A5|1976-11-30|
    ZA735010B|1975-01-29|
    GB1438955A|1976-06-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4619716A|1983-10-13|1986-10-28|Kabushiki Kaisha Toyota Chuo Kenkyusho|Method of brazing an aluminum material|
    GB9013043D0|1990-06-12|1990-08-01|Laporte Industries Ltd|Fluxes for aluminium brazing or welding|
    JPH07314177A|1994-03-28|1995-12-05|Mitsubishi Alum Co Ltd|Composition for brazing as well as al material and heat exchanger provided with composition for brazing|
    DE59907723D1|1998-03-25|2003-12-18|Solvay Fluor & Derivate|NEW FLUIDS|
    FR2779367B1|1998-06-04|2000-08-11|Martin Sa G|PROCESS FOR THE SERIAL PREPARATION OF WELDING PARTS AND FACILITIES FOR CARRYING OUT SAID METHOD|
    DE10015486A1|2000-03-30|2001-10-11|Solvay Fluor & Derivate|Flux containing alkali fluorostannate, preferably potassium and/or cesium fluorostannate and mixture of potassium and cesium fluorostannate is used for soldering and brazing aluminumparts|
    EP1808264A1|2006-01-11|2007-07-18|Akzo Nobel Coatings International B.V.|Brazing flux composition comprising a lubricant|
    EP1808255A1|2006-01-11|2007-07-18|Corus Aluminium Walzprodukte GmbH|Method of manufacturing a brazed assembly|
    PL2091686T3|2006-12-11|2017-06-30|Lucas-Milhaupt, Inc.|Low and non-silver filler metals and alloys and corresponding joinder systems and methods|
    GB2447486A|2007-03-14|2008-09-17|Sandvik Osprey Ltd|A brazing piece comprising a composite material including an inorganic flux|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB3618372A|GB1438955A|1972-08-02|1972-08-02|Brazing aluminium|
    ZA00735010A|ZA735010B|1972-08-02|1973-07-23|Improvements in or relating to brazing aluminium|
    DE19732338261|DE2338261B2|1972-08-02|1973-07-27|PROCESS FOR PRODUCING A SOLDERED JOINT BETWEEN ALUMINUM OR ALUMINUM ALLOY COMPONENTS|
    [返回顶部]