CA2467584A1 - Product and method for low temperature fluxless brazing - Google Patents

Product and method for low temperature fluxless brazing Download PDF

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Publication number
CA2467584A1
CA2467584A1 CA002467584A CA2467584A CA2467584A1 CA 2467584 A1 CA2467584 A1 CA 2467584A1 CA 002467584 A CA002467584 A CA 002467584A CA 2467584 A CA2467584 A CA 2467584A CA 2467584 A1 CA2467584 A1 CA 2467584A1
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CA
Canada
Prior art keywords
layer
brazing
product according
aluminum
zinc
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
Application number
CA002467584A
Other languages
French (fr)
Other versions
CA2467584C (en
Inventor
Kostas F. Dockus
Brian E. Cheadle
Robert H. Krueger
Feng Liang
Mark S. Kozdras
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Dana Canada Corp
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2467584A1 publication Critical patent/CA2467584A1/en
Application granted granted Critical
Publication of CA2467584C publication Critical patent/CA2467584C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • 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
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/002—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of light metal
    • 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
    • B23K35/0233—Sheets, foils
    • B23K35/0238—Sheets, foils layered
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
    • C25D5/44—Aluminium
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/12764—Next to Al-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component

Abstract

A family of low temperature brazing alloys wherein the alloy is utilized in the form of a filler metal or shim and consists of electroplated nickel on zinc shimstock, wherein the zinc shimstock includes zinc, aluminum and silicon, with or without a small amount of lead, tantalum or bismuth. The use of the brazing alloys for the joining aluminum parts together or an aluminum part to a part of another metal, such as brass. Further, metallic coating could be thermally spray coated and powder metals could be utilized as the filler materials with equally acceptable brazing techniques. Using these techniques, the brazing could be accomplished at a temperature in the range of 750 to 1050 ~F.

Claims (22)

1. A brazing product for low temperature, fluxless brazing, comprising:
(a) a temperature modifier layer comprised of at least 50% of a metal selected from the group comprising zinc, aluminum and copper; and (b) a braze promoting layer comprising one or more metals selected from the group comprising nickel and cobalt;
wherein, during brazing, the temperature modifier layer and the braze-promoting layer form a filler metal having a liquidus temperature in the range from about 730 to 1130°F.
2. The brazing product according to claim 1, wherein the temperature modifier layer further comprises one or more metals selected from the group comprising nickel, silicon and magnesium.
3. The brazing product according to claim 1, wherein the temperature modifier layer is comprised of zinc; zinc and nickel; zinc and aluminum; zinc, aluminum and silicon;
aluminum and silicon; aluminum, silicon and magnesium; or aluminum, zinc, silicon and magnesium.
4. The brazing product according to claim 1, wherein the temperature modifier layer comprises aluminum in an amount up to about 100 percent, preferably 90 percent; zinc in an amount of up to about 100 percent; and silicon in an amount of up to about 18 percent.
5. The brazing product according to claim 1, wherein the temperature modifier layer comprises aluminum in an amount up to about 65 percent; zinc in an amount of about 25 to 100 percent; and silicon in an amount of up to about 18 percent.
6. The brazing product according to claim 1, wherein the temperature modifier layer comprises aluminum in an amount of up to about 10 percent; zinc in an amount of about 90 to 100 percent; and silicon in an amount of up to about 14 percent.
7. The brazing product according to claim 1, wherein the liquidus temperature of the filler metal is about 750 to 1050°F.
8. The brazing product according to claim 1, wherein the liquidus temperature of the filler metal is about 790 to 1050°F.
9. The brazing product according to claim 1, wherein the temperature modifier layer is aluminum-based and wherein the product further comprises a bonding layer between the temperature modifier layer and the braze-promoting layer.
10. The brazing product according to claim 9, wherein the bonding layer is comprised of one or more metals selected from the group comprising zinc, tin, lead, bismuth, nickel, antimony, magnesium, lithium and thallium.
11. The brazing product according to claim 1, comprising a brazing preform.
12. The brazing product according to claim 1, further comprising a core layer which is covered by the temperature modifier layer, the core having a melting temperature above 1130°F so that it does not substantially melt during brazing.
13. The brazing product according to claim 12, wherein the core layer is comprised of aluminum or an aluminum alloy.
14. The brazing product according to claim 12, wherein the core layer is comprised of an aluminum alloy selected from the group comprising AA3000, AA5000, AA6000, AA2000, AA8000 and AA7000 series alloys.
15. The brazing product according to claim 12, wherein the core layer is comprised of a metal selected from the group comprising titanium, titanium alloys, bronze, brass, copper, high strength steel, low carbon steel, stainless steel, nickel, nickel alloy steel, coated titanium, coated stainless steel or coated steel.
16. The brazing product according to claim 12, further comprising a barrier coating applied between the core layer and the temperature modifier layer.
17. The brazing product according to claim 16, wherein the barrier coating comprises nickel, nickel-lead, nickel-bismuth, copper, copper-lead, copper-bismuth, aluminum or silicon.
18. The brazing product according to claim 16, further comprising a bonding layer applied directly on top of the core layer, and wherein the barrier coating is applied between the bonding layer and the temperature modifier layer.
19. The brazing product according to claim 12, comprising a brazing sheet.
20. The brazing sheet according to claim 12, wherein the temperature modifier layer is applied to the core by a method selected from the group comprising roll bonding, hot dipping, arc spraying, thermal spraying, low temperature kinetic energy metallization, high velocity low pressure coating, electroplating, physical vapor deposition, chemical vapor deposition, and roll compaction of a powder metal mixture or application of a powder mixture as a paste, preform, or coating with suitable bind or flow promoter.
21. The brazing product according to claim 16, wherein the barrier layer comprises an interlayer between the core layer and a clad layer on the core.
22. A brazing product for low temperature, fluxless brazing, comprising:
(a) a temperature modifier layer comprised of at least 50% of a metal selected from the group comprising zinc, aluminum and copper; and (b) a braze promoting layer comprising one or more metals selected from the group comprising nickel, cobalt and iron;
wherein, during brazing, the temperature modifier layer and the braze-promoting layer and perhaps the substrate interact to form a filler metal.
CA2467584A 2001-11-21 2002-11-21 Product and method for low temperature fluxless brazing Expired - Fee Related CA2467584C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/990,507 US6815086B2 (en) 2001-11-21 2001-11-21 Methods for fluxless brazing
US09/990,507 2001-11-21
PCT/CA2002/001763 WO2003045619A1 (en) 2001-11-21 2002-11-21 Alloy composition and method for low temperature fluxless brazing

Publications (2)

Publication Number Publication Date
CA2467584A1 true CA2467584A1 (en) 2003-06-05
CA2467584C CA2467584C (en) 2010-08-17

Family

ID=25536230

Family Applications (5)

Application Number Title Priority Date Filing Date
CA2779474A Expired - Fee Related CA2779474C (en) 2001-11-21 2002-11-21 Improvements in fluxless brazing
CA2467621A Expired - Fee Related CA2467621C (en) 2001-11-21 2002-11-21 Improvements in fluxless brazing
CA2467583A Expired - Fee Related CA2467583C (en) 2001-11-21 2002-11-21 Fluxless brazing method and compositions of layered material systems for brazing aluminum or dissimilar metals
CA2467584A Expired - Fee Related CA2467584C (en) 2001-11-21 2002-11-21 Product and method for low temperature fluxless brazing
CA2736641A Expired - Fee Related CA2736641C (en) 2001-11-21 2002-11-21 Products and compositions of layered material systems for fluxless brazing of aluminum or dissimilar metals

Family Applications Before (3)

Application Number Title Priority Date Filing Date
CA2779474A Expired - Fee Related CA2779474C (en) 2001-11-21 2002-11-21 Improvements in fluxless brazing
CA2467621A Expired - Fee Related CA2467621C (en) 2001-11-21 2002-11-21 Improvements in fluxless brazing
CA2467583A Expired - Fee Related CA2467583C (en) 2001-11-21 2002-11-21 Fluxless brazing method and compositions of layered material systems for brazing aluminum or dissimilar metals

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA2736641A Expired - Fee Related CA2736641C (en) 2001-11-21 2002-11-21 Products and compositions of layered material systems for fluxless brazing of aluminum or dissimilar metals

Country Status (10)

Country Link
US (4) US6815086B2 (en)
EP (5) EP1446262B9 (en)
JP (3) JP4339690B2 (en)
CN (4) CN1323798C (en)
AT (2) ATE449660T1 (en)
AU (3) AU2002342469A1 (en)
CA (5) CA2779474C (en)
DE (2) DE60237534D1 (en)
HU (1) HUP0500112A2 (en)
WO (3) WO2003045618A1 (en)

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