WO2001005552A1 - Bagues de brasage et leur procede de fabrication - Google Patents

Bagues de brasage et leur procede de fabrication Download PDF

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Publication number
WO2001005552A1
WO2001005552A1 PCT/CZ2000/000049 CZ0000049W WO0105552A1 WO 2001005552 A1 WO2001005552 A1 WO 2001005552A1 CZ 0000049 W CZ0000049 W CZ 0000049W WO 0105552 A1 WO0105552 A1 WO 0105552A1
Authority
WO
WIPO (PCT)
Prior art keywords
soldering
rings
weight
aluminium
flux
Prior art date
Application number
PCT/CZ2000/000049
Other languages
English (en)
Inventor
Jiří MIČULEK
Josefína SPÁČILOVÁ
Original Assignee
Diafrikt, S.R.O.
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 Diafrikt, S.R.O. filed Critical Diafrikt, S.R.O.
Priority to AU61465/00A priority Critical patent/AU6146500A/en
Publication of WO2001005552A1 publication Critical patent/WO2001005552A1/fr

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
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
    • B23K35/286—Al as the principal constituent
    • 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
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244—Powders, particles or spheres; Preforms made therefrom
    • 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
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • 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

Definitions

  • the present invention relates to compact composite soldering rings based on aluminium alloy containing a flux determined to be used to solder aluminium or aluminium alloy parts.
  • the prior art methods of soldering aluminium and aluminium alloy parts commonly use a method comprising the steps of applying a flux in the form of a paste, a suspension or a powder at first and then adding of a flux means, which flux means is usually in form of an aluminium or aluminium-silicon wire.
  • a flux means which flux means is usually in form of an aluminium or aluminium-silicon wire.
  • the so prepared soldering knot is then heated by a flame or in an oven, whereby, the parts determined to be soldered are heated up.
  • soldering in presence of a flux and a solder require that said solder and said flux are applied individually one after the other on the soldered surfaces.
  • This method is rather complicated, especially when soldering process automation is intended to be used.
  • Another disadvantage is that for individual soldering knots applications it is necessary to vary the flux/solder ratio as a flux shortage causes that the soldering is imperfect and a flux surplus causes that the surface appearance is imperfect, the surface is difficult to treat and also other problems are caused, e.g. that flux rests are present on the soldered surfaces. In many cases, it is necessary to remove the flux rests by a complicated process.
  • Another method is to use an Al or Al-Si wire filled with a flux core or a wire made of an Al-Si mixture or Al-Si alloys with a flux. In all such cases it is necessary to form rings, e.g. by cutting the wire to pieces and forming the pieces into said rings. Another disadvantage is that rings of accurate geometry are not obtained, what is a disadvantage in an automatic soldering process.
  • Said rings represent a homogenous composite system formed by a basic matrix which matrix takes the form of Al-Si alloy particles which Al-Si alloy particles are surrounded by particles of a selected flux.
  • Methods of powder metallurgy are used to produce compact rings of any predetermined form, whereby, the flux and the Al-Si alloy contents in the soldering composition are controlled according to the specific requirements of the particular soldered parts.
  • Any Al-Si alloy powder particle is surrounded by particles of said flux, whereby, the Al-Si alloy powder particle is protected against oxidation during the heating up process.
  • Al-Si alloy powders containing 5 to 14 % by weight of Si in the matrix, preferably 10 to 13 % by weight, preferably can be alloyed with one or more of the other optional additives, so as with Fe (iron) , Cu (copper) , Mn (manganese) , Zn (zinc) or Ti (titanium) , whereby, the Fe content is up to 0.6 % by weight, that of Cu up to 0.1 % by weight, that of Mn up to 0.5 % by weight, that of Zn up to 0.8 % by weight and that of Ti up to 0.5 % by weight.
  • Any suitable flux can be used, preferably the fluoride based K 1 -3AIF-6 (potassium fluoroalumi nates) ones or the chloride based ZnCl 2 (zinc dichloride) ones.
  • the most preferable is the eutectic composition KF-AIF3.
  • a compact composite soldering ring according to this invention can be produced by common methods of powder metallurgy, i.e. the initial powder components, specified by their grain size, are mixed in the desired ratio in a mixer.
  • the composition so obtained is then moulded to the desired shape by applying pressure 100-600 MPa, whereby, the composition can be prepared in presence of air and at the room temperature.
  • the so produced mouldings having the shape of compact rings are then deposited free in a protective atmosphere and heated up to a temperature from 360 to 600 °C. If necessary, the so treated rings can be after-treated in cold state by further moulding, calibrating or by mechanical working.
  • Figure 1 shows a compact, composite soldering ring
  • Figure 2 shows internal structure of a soldering ring which ring is made of Al-Si particles 2 surrounded by flux particles 1_.
  • a compact composite soldering ring according to this invention comprised:
  • the soldering ring was produced by the following methods of powder metallurgy: a) moulding of a homogenised composition of said AlSi alloy powder and said flux powder at the room temperature under pressure 500 MPa, whereby, contact with air was allowed, b) heating up of the so moulded compact rings up to 450 °C under a protective H 2 atmosphere, whereby the rings were loosely deposited in an oven. c) calibrating of the so thermally treated rings to the desired dimension by applying pressure 200 MPa which calibrating was carried out at the room temperature and in contact with air.
  • the so produced rings provided soldering of aluminium parts or aluminium alloy parts of an excellent quality. No defects of soldered joints and no flux rests on the surface were observed. Use of a compact composite ring did not require any rinsing of the soldered parts.
  • the soldering ring so produced exhibited an excellent solderability and satisfactory results of appearance and surface quality.
  • soldering rings according to the present invention will find use in soldering aluminium and aluminium alloy parts, which soldering is then simpler. Considering the environment protection, an advantage is that no rinsing of the soldered joints and no rinsing waste water disposal are necessary. Elements of the soldering process automation can be used, what makes the process particularly suitable for the car producing industry, as well as for production of refrigerating or air- conditioning equipment, whereby, production productivity is increased and production costs decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

Cette invention concerne des bagues de brasage utiliser de préférence pour le brasage de pièces en aluminium et en alliage d'aluminium qui sont réalisées à partir d'un alliage d'aluminium renfermant un fondant. Ces bagues de brasage sont des bagues homogènes compact faites de particules d'alliage d'aluminium AlSi (2) entourées de particules de fondant (2). Leur fabrication fait appel à des techniques de la métallurgie des poudres : on moule une composition homogénéisée dudit alliage et desdites particules de flux à l'air et à la température ambiantes sous forme de bagues, puis on chauffe les bagues déposées en vrac dans un four sous atmosphère protectrice à une température comprise entre 350 et 600 °C.
PCT/CZ2000/000049 1999-07-19 2000-07-14 Bagues de brasage et leur procede de fabrication WO2001005552A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61465/00A AU6146500A (en) 1999-07-19 2000-07-14 Soldering rings and a method of their production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2562-99 1999-07-19
CZ256299A CZ9902562A3 (en) 1999-07-19 1999-07-19 Soldering rings and process for producing thereof

Publications (1)

Publication Number Publication Date
WO2001005552A1 true WO2001005552A1 (fr) 2001-01-25

Family

ID=5465184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2000/000049 WO2001005552A1 (fr) 1999-07-19 2000-07-14 Bagues de brasage et leur procede de fabrication

Country Status (3)

Country Link
AU (1) AU6146500A (fr)
CZ (1) CZ9902562A3 (fr)
WO (1) WO2001005552A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855085A1 (fr) * 2003-05-23 2004-11-26 Fp Soudage Procede de fabrication d'un produit de brasage, produit de brasage ainsi obtenu et son utilisation
GB2447486A (en) * 2007-03-14 2008-09-17 Sandvik Osprey Ltd A brazing piece comprising a composite material including an inorganic flux
FR2938460A1 (fr) * 2008-11-19 2010-05-21 Fp Soudage Produit de brasage comprenant un melange de flux de brasage et metal d'apport et procede de fabrication
CN102941342A (zh) * 2012-12-04 2013-02-27 郑州机械研究所 自钎剂铝焊环的压制方法以及专用的冷压模具和烧结模具
CN104874800A (zh) * 2015-05-27 2015-09-02 优美科科技材料（苏州）有限公司 一种由粉末压制成焊环的制造方法
CN105081601A (zh) * 2014-05-06 2015-11-25 烟台市固光焊接材料有限责任公司 一种低温铜铝钎料的制备方法及其低温铜铝钎料

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB646377A (en) * 1947-03-11 1950-11-22 John Cockbain Briggs Improvements in and relating to soldering and brazing
GB680588A (en) * 1950-08-16 1952-10-08 Metro Cutanit Ltd Improvements relating to the brazing of metals
EP0202008A1 (fr) * 1985-04-09 1986-11-20 Cramco Solder Alloys Limited Pièces formées pour soudure contenant un flux, procédé de fabrication et utilisation
EP0563750A1 (fr) * 1992-04-01 1993-10-06 Whirlpool Europe B.V. Procédé pour la fabrication d'éléments préformés de dimensions et de forme voulues pour le soudage de pièces métalliques, notamment par soudobrasage et éléments ainsi obtenus
EP0588545A1 (fr) * 1992-09-14 1994-03-23 Showa Aluminum Corporation Méthode pour le brasage des articles en aluminium
EP0697266A1 (fr) * 1994-07-22 1996-02-21 Showa Aluminum Corporation Procédé de fabrication d'un agent de brasage en alliage d'aluminium contenant un flux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB646377A (en) * 1947-03-11 1950-11-22 John Cockbain Briggs Improvements in and relating to soldering and brazing
GB680588A (en) * 1950-08-16 1952-10-08 Metro Cutanit Ltd Improvements relating to the brazing of metals
EP0202008A1 (fr) * 1985-04-09 1986-11-20 Cramco Solder Alloys Limited Pièces formées pour soudure contenant un flux, procédé de fabrication et utilisation
EP0563750A1 (fr) * 1992-04-01 1993-10-06 Whirlpool Europe B.V. Procédé pour la fabrication d'éléments préformés de dimensions et de forme voulues pour le soudage de pièces métalliques, notamment par soudobrasage et éléments ainsi obtenus
EP0588545A1 (fr) * 1992-09-14 1994-03-23 Showa Aluminum Corporation Méthode pour le brasage des articles en aluminium
EP0697266A1 (fr) * 1994-07-22 1996-02-21 Showa Aluminum Corporation Procédé de fabrication d'un agent de brasage en alliage d'aluminium contenant un flux

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855085A1 (fr) * 2003-05-23 2004-11-26 Fp Soudage Procede de fabrication d'un produit de brasage, produit de brasage ainsi obtenu et son utilisation
GB2447486A (en) * 2007-03-14 2008-09-17 Sandvik Osprey Ltd A brazing piece comprising a composite material including an inorganic flux
US8871356B2 (en) 2007-03-14 2014-10-28 Sandvik Osprey Limited Brazing piece, a method of making a brazing piece, and a method of brazing and components made from said brazing piece
FR2938460A1 (fr) * 2008-11-19 2010-05-21 Fp Soudage Produit de brasage comprenant un melange de flux de brasage et metal d'apport et procede de fabrication
WO2010058116A1 (fr) 2008-11-19 2010-05-27 Fp Soudage Produit de brasage comprenant un mélange de flux de brasage et métal d'apport et procède de fabrication
US8696829B2 (en) 2008-11-19 2014-04-15 Fp Soudage Brazing product comprising a mixture of brazing flux and filler metal, and production method thereof
CN102941342A (zh) * 2012-12-04 2013-02-27 郑州机械研究所 自钎剂铝焊环的压制方法以及专用的冷压模具和烧结模具
CN105081601A (zh) * 2014-05-06 2015-11-25 烟台市固光焊接材料有限责任公司 一种低温铜铝钎料的制备方法及其低温铜铝钎料
CN104874800A (zh) * 2015-05-27 2015-09-02 优美科科技材料（苏州）有限公司 一种由粉末压制成焊环的制造方法

Also Published As

Publication number Publication date
CZ9902562A3 (en) 2001-06-13
AU6146500A (en) 2001-02-05

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