Brazing Or Soldering Patents (Class 228/262.51)
  • Patent number: 10307869
    Abstract: The present invention provides an aluminum alloy brazing sheet for electric resistance welding, which has high strength while being thinned and can reduce the occurrence of welding defects in the electric resistance welding. Disclosed is an aluminum alloy brazing sheet for electric resistance welding, including a core layer and a brazing filler layer cladded on at least one surface of the core layer, wherein the brazing filler layer is made of an aluminum alloy comprising Si: 5.5 to 12.0% by mass, and at least one of Na: 0.0003 to 0.0030% by mass and Sr: 0.0020 to 0.1000% by mass, with the balance being Al and inevitable impurities, wherein the brazing filler layer in a molten state at 650° C. exhibits a viscosity of 0.01 Pa·s or less.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: June 4, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Shimpei Kimura, Toshiki Ueda, Takahiro Izumi, Yuji Shibuya
  • Patent number: 10179379
    Abstract: A five layer sheet for vacuum brazing has a core layer of 3XXX aluminum alloy and two interliner layers of 5XXX aluminum alloy bonded to the core layer. Two layers of 4XXX aluminum alloy are bonded to the two interliner layers. An elevated quantity of Mg in the interliner layers can provide enhanced strength, facilitate brazing and provide corrosion protection. A low zinc composition for the sheet also facilitates vacuum brazing.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 15, 2019
    Assignee: Arconic Inc.
    Inventor: Baolute Ren
  • Patent number: 9498835
    Abstract: A brazing method is disclosed. The brazing method includes providing a substrate, providing at least one groove in the substrate, providing a support member, positioning the support member over the at least one groove in the substrate, providing a braze material, applying the braze material over the support member to form an assembly, and heating the assembly to braze the braze material to the substrate. Another brazing method includes providing a preform, providing a wire mesh, pressing the wire mesh into the preform, heating the preform to form a braze material including the wire mesh, providing a substrate, providing at least one groove in the substrate, applying the braze material over the at least one groove in the substrate, then brazing the braze material to the substrate.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: November 22, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: David Edward Schick, Srikanth Chandrudu Kottilingam, Benjamin Paul Lacy, John Wesley Harris, Jr., Brian Lee Tollison
  • Patent number: 9498834
    Abstract: A brazing method is disclosed. The brazing method includes providing a substrate, providing at least one groove in the substrate, providing a support member, positioning the support member over the at least one groove in the substrate, providing a braze material, applying the braze material over the support member to form an assembly, and heating the assembly to braze the braze material to the substrate. Another brazing method includes providing a preform, providing a wire mesh, pressing the wire mesh into the preform, heating the preform to form a braze material including the wire mesh, providing a substrate, providing at least one groove in the substrate, applying the braze material over the at least one groove in the substrate, then brazing the braze material to the substrate.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: November 22, 2016
    Assignee: General Electric Company
    Inventors: David Edward Schick, Srikanth Chandrudu Kottilingam, Benjamin Paul Lacy, John Wesley Harris, Jr., Brian Lee Tollison
  • Patent number: 9486881
    Abstract: An aluminum alloy sheet product or extruded product for fluxless brazing, including an aluminum alloy core having on at least one face an aluminum filler clad layer containing 4% to 15% of Si, the filler clad layer having an inner-surface and an outer-surface, the inner-surface is facing the aluminum alloy core and the outer-surface is facing a coating layer of 2 to 45 mg/sq·m of Bi or of a Bi-based alloy. Furthermore, a method of brazing a brazed assembly incorporating at least one member made from the brazing sheet material.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: November 8, 2016
    Assignee: ALERIS ROLLED PRODUCTS GERMANY GMBH
    Inventors: Adrianus Jacobus Wittebrood, Steven Kirkham, Achim Bürger, Klaus Vieregge
  • Patent number: 9233414
    Abstract: A method of making an aluminum airfoil includes brazing a first airfoil piece and a second airfoil piece together using a braze material that includes an element selected from magnesium and zinc, to form a braze joint between the first airfoil piece and the second airfoil piece. At least one of the first airfoil piece or the second airfoil piece has an aluminum alloy composition that includes greater than 0.8% by weight of zinc.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: January 12, 2016
    Assignee: United Technologies Corporation
    Inventors: Thomas J. Watson, Daniel A. Bales
  • Patent number: 9033206
    Abstract: In order to enable a satisfactory fluxless brazing without needing flux or vacuum facilities, a brazing object including an aluminum alloy material provided with an Al—Si—Mg brazing filler metal is joined by the Al—Si—Mg brazing filler metal without the use of flux by heating the aluminum alloy material, when raising the temperature in a brazing furnace, at least in a temperature range of 450° C. to before melting of the filler metal under a first inert gas atmosphere having an oxygen concentration of preferably 50 ppm and following by heating at least at or above a temperature at which the filler metal starts to melt under a second inert gas atmosphere having an oxygen concentration of preferably 25 ppm and a nitrogen gas concentration of preferably 10% by volume or less.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: May 19, 2015
    Assignee: MITSUBISHI ALUMINUM CO., LTD.
    Inventors: Masakazu Edo, Hideyuki Miyake, Masatoshi Akiyama, Yuji Nomura, Norihiro Nose, Hiroki Amano
  • Patent number: 9012033
    Abstract: An aluminum alloy clad sheet for heat exchangers includes a core material, a cladding material 1, and a cladding material 2, one side and the other side of the core material being respectively clad with the cladding material 1 and the cladding material 2, the core material containing 0.5 to 1.2% of Si, 0.2 to 1.0% of Cu, 1.0 to 1.8% of Mn, and 0.05 to 0.3% of Ti, with the balance being Al and unavoidable impurities, the cladding material 1 containing 3 to 6% of Si, 2 to 8% of Zn, and at least one of 0.3 to 1.8% of Mn and 0.05 to 0.3% of Ti, with the balance being Al and unavoidable impurities, and the cladding material 2 containing 6 to 13% of Si, with the balance being Al and unavoidable impurities, the cladding material 1 serving as the outer side of the aluminum alloy clad sheet during use.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: April 21, 2015
    Assignees: Denso Corporation, Sumitomo Light Metal Industries, Ltd.
    Inventors: Hiroki Matsuo, Haruhiko Miyachi, Kenji Negura, Naoki Yamashita, Yuji Hisatomi, Yasunaga Itoh
  • Patent number: 8915142
    Abstract: A ceramic component having at least one electrical feedthrough, comprising: a ceramic body, through which a bore extends; and a metal conductor, which is arranged at least sectionally in the bore and which is secured in the bore by means of an active hard solder, or braze, whereby the bore is sealed. The active hard solder fills an annular gap between the metal conductor and the ceramic body, characterized in that the active hard solder has a radially variable, chemical composition.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: December 23, 2014
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventor: Ulfert Drewes
  • Publication number: 20140272463
    Abstract: This application discloses a multilayer aluminum material having an aluminum alloy core and an aluminum alloy cladding, wherein the aluminum alloy cladding contains ?1.0 wt % Cu, ?0.5 wt % Fe, ?1.0 wt % Mn, ?15 wt % Si, ?0.15 wt % Ti, ?7 wt % Zn and at least one of Sr or Na, remainder Al. The aluminum alloy cladding can also contain one or more of ?0.2 wt % Mg or ?0.05 wt % Ni. A process for producing the material is also disclosed. The material can be produced in sheet form and is suitable for brazing application. The metal forms fabricated from the multilayer aluminum material by a process comprising brazing steps are also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: NOVELIS INC.
    Inventor: PIERRE HENRI MAROIS
  • Patent number: 8793875
    Abstract: A runner for a snowmobile ski is fabricated from flat metal plate stock and incorporates mounting features for securing the runner to the ski and a wear strip of a relatively harder material provided on and projecting from a lower surface of the runner body. A quick release mounting system is provided for attaching the runner to the ski, including quick installation and release wedge mounting systems. The thin runner blade and wear strip are of the same thickness and are joined by a brazed joint. The invention contemplates a method of fabricating the runner and a method of mounting the runner.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: August 5, 2014
    Inventor: Robert Musselman
  • Patent number: 8789743
    Abstract: A method for the joining of ceramic pieces with a hermetically sealed joint comprising brazing a continuous layer of joining material between the two pieces. The wetting and flow of the joining material is controlled by the selection of the joining material, the joining temperature, the time at temperature, the joining atmosphere, and other factors. The ceramic pieces may be aluminum nitride and the pieces may be brazed with an aluminum alloy under controlled atmosphere. The joint material is adapted to later withstand both the environments within a process chamber during substrate processing, and the oxygenated atmosphere which may be seen within the shaft of a heater or electrostatic chuck.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: July 29, 2014
    Assignee: Component Re-Engineering Company, Inc.
    Inventors: Alfred Grant Elliot, Brent Donald Alfred Elliot, Frank Balma, Richard Erich Schuster, Dennis George Rex, Alexander Veytser
  • Patent number: 8574723
    Abstract: The invention relates to a sandwich material for brazing comprising a core layer of a first aluminum alloy and a barrier layer of a second aluminum alloy characterized by that: the first alloy, constituting the core layer contains (in weight %): 0.8-2% Mn, ?1.0% Mg, 0.3-1.5% Si, ?0.3% Ti, ?0.3% Cr, ?0.3% Zr, ?1.3% Cu, ?0.5% Zn, ?0.2% In, ?0.1% Sn and ?0.7% (Fe+Ni), the balance consisting of Al and ?0.05% of each of the unavoidable impurities, and that the second alloy, constituting the barrier layer contains (in weight %): ?0.2% Mn+Cr, ?1.0% Mg, ?1.5% Si, ?0.3% Ti, ?0.2% Zr, ?0.3% Cu, ?0.5% Zn, ?0.2% In, ?0.1% Sn and ?1.5% (Fe+Ni), the balance consisting of Al and ?0.05% of each of the unavoidable impurities, The invention also concerns a method for the manufacture of the sandwich material, a brazed product, such as a heat exchanger comprising the sandwich material and the use of the brazed product at high and low temperatures.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: November 5, 2013
    Assignee: Sapa Heat Transfer AB
    Inventor: Hans-Erik Ekström
  • Patent number: 8455110
    Abstract: A brazing sheet material for CAB brazing without applying flux. The brazing sheet material including an aluminum core alloy layer provided with a first brazing clad layer material on one or both sides of the aluminum core layer and at least one second brazing clad layer material positioned between the aluminum core alloy layer and the first braze clad layer material. The second brazing clad layer material is an Al—Si alloy brazing material having 5% to 20% Si and 0.01% to 3% Mg, and the first brazing clad layer material is an Al—Si alloy brazing material having 2% to 14% Si and less than 0.4% Mg. Also disclosed is a brazed assembly manufactured in a brazing operation.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: June 4, 2013
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventors: Adrianus Jacobus Wittebrood, Theobald De Haan, Achim Bürger
  • Patent number: 8445115
    Abstract: A method of processing a brazed article includes forming a braze joint with an aluminum component comprising a nano-grained aluminum alloy.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: May 21, 2013
    Assignee: Pratt & Whitney Rocketdyne, Inc.
    Inventor: Clifford C. Bampton
  • Patent number: 8413876
    Abstract: The invention relates to a strip or sheet of aluminium alloy, comprising at least 80% by weight of aluminium and 0.01 to 0.5% yttrium and/or 0.05 to 0.5% bismuth, coated on at least one face with a brazing alloy. Said sheets and strips are used for the production of pieces by non-flux brazing.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: April 9, 2013
    Assignees: Constellium France, Constellium Rolled Products, Ravenswood, LLC
    Inventors: Sandrine Dulac, Sylvain Henry
  • Publication number: 20130062399
    Abstract: An apparatus (10) for the production of brazed aluminium products on a continuous flow basis includes, in sequence, a flux application zone (12), a tunnel furnace (14), a cooling zone (15,16) and a transportation element (25) for conveying (26) component parts or products though the apparatus, the transportation element including a closed loop conveyor having both conveying (26) and return (27) runs within the tunnel furnace.
    Type: Application
    Filed: April 11, 2011
    Publication date: March 14, 2013
    Applicant: AFC-HOLCROFT
    Inventor: Malcolm Roger McQuirk
  • Patent number: 8343635
    Abstract: Provided is a multi-layered sheet which has undergone heating corresponding to brazing, such as an aluminum-alloy radiator tube, or a multi-layered sheet such as an aluminum-alloy brazing sheet. The multi-layered sheet can have a reduced thickness and has excellent fatigue properties. The multi-layered sheet of aluminum alloys comprises a core layer (2) which has been clad at least with a sacrificial layer (3). This multi-layered sheet is a multi-layered sheet to be subjected to brazing or welding to produce a heat exchanger or is a multi-layered sheet which has undergone heating corresponding to brazing. The core layer (2) comprises a specific 3000-series composition. In this core layer (2), the average density in number of dispersed particles having a specific size has been regulated. As a result, fatigue properties, which govern cracking, can be highly improved.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: January 1, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Katsushi Matsumoto, Eiichi Tamura, Masao Kinefuchi, Toshiki Ueda, Fumihiro Koshigoe, Shimpei Kimura
  • Patent number: 8324522
    Abstract: Provided is an apparatus for performing a reflow process of a solder ball provided to a semiconductor chip. The reflow apparatus may include a coil, a support member and a moving member. The coil may receive a current from a power supply to heat the solder ball using an induced heating method. The support member may be disposed on the front or the rear of the coil and may support a printed circuit board on which a semiconductor chip is mounted. The moving member may move the printed circuit board so that the printed circuit object passes through an internal space surrounded by the coil.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minill Kim, Kwang Yong Lee, Jonggi Lee, Ji-Seok Hong
  • Patent number: 8283049
    Abstract: An aluminum brazing sheet has a core material made of an aluminum alloy and a cladding material cladded on at least one side of the core material and made of an aluminum alloy having a potential lower than that of the core material. The cladding material is made of an aluminum alloy consisting essentially of 0.4 to 0.7 mass % of Mg, 0.5 to 1.5 mass % of Si, and 0.4 to 1.2 mass % of Mn, the remainder being Al and unavoidable impurities. Zn in the amount of 6 mass % or less is added in accordance with need. An aluminum brazing sheet having not only high strength but also less pressure adhesion failure and excellent productivity can be obtained.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: October 9, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Susumu Saisho, Toshiki Ueda, Fumihiro Sato
  • Patent number: 8263233
    Abstract: A frame member for use in a two-wheeled vehicle and an all-terrain vehicle that includes a plurality of Al members each made of a 7000 series Al alloy having a high strength is provided in which weld crack sensitivity is reduced and a weld joint having an excellent strength is provided. The alloy composition of the 7000 series Al alloy, which provides the Al member, containing Cu: 0.01 to 0.50%, Mg: 0.5 to 2.1%, and Zn: 4.0 to 8.5%, with the balance being Al and inevitable impurities. Further, in the production of the frame member, the plurality of Al members are integrated by welding using a filler metal containing Mg: 5.5 to 8.0%, Cr: 0.05 to 0.25%, Ti: 0.25% or less, Si: 0.4% or less, Fe: 0.4% or less, Cu: 0.1% or less, Zr: 0.05% or less and Zn: 0.25% or less, and with the balance being Al and inevitable impurities.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: September 11, 2012
    Assignees: Sumitomo Light Metal Industries, Ltd., Honda Motor Co., Ltd.
    Inventors: Toshihiko Fukuda, Tadashi Minoda, Kyo Takahashi, Yukihide Fukuda
  • Patent number: 8247083
    Abstract: To provide an aluminum alloy brazing sheet which can improve erosion resistance while maintaining post-braze strength, brazability, formability, corrosion resistance and other properties even when Mg is added to the core material. The aluminum alloy brazing sheet comprises an Al—Si-based or Al—Si—Zn-based filler material cladded on at least one side of a core material. The core material comprises Si: 0.3 to 1.0% by mass, Mn: 0.6 to 2.0% by mass, Cu: 0.3 to 1.0% by mass, Mg: 0.15 to 0.5% by mass, Ti: 0.05 to 0.25% by mass, with the remainder being Al and inevitable impurities, and has the density of an Mg—Si-based, Al—Mg—Cu-based, Al—Cu—Mg—Si-based intermetallic compound with a particle size smaller than 0.5 ?m of 10000/mm2 or higher, or has the density of the Mg—Si-based, Al—Mg—Cu-based and Al—Cu—Mg—Si-based intermetallic compounds with a particle size of 1.0 ?m or larger lower than 5000/mm2.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: August 21, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Takahiro Izumi, Toshiki Ueda, Shimpei Kimura
  • Patent number: 8247082
    Abstract: There is provided an aluminum alloy brazing sheet having an improved brazability than in the related art while keeping the post-braze strength, workability, corrosion resistance, and the like at respective prescribed or higher levels. An aluminum alloy brazing sheet has a two-layered structure in which on one side of a core material, a brazing material is provided. The core material contains Si: 0.6 to 1.0 mass %, Cu: 0.6 to 1.0 mass %, Mn: 0.7 to 1.8 mass %, Mg: 0.1 to 0.7 mass %, and Ti: 0.06 to 0.20 mass %, and the balance including Al and inevitable impurities. The brazing material includes an aluminum alloy containing Si: 3.0 to 12.0 mass %, the gage of the aluminum alloy brazing sheet is 0.6 to 1.4 mm, and the area ratio of a {001} plane in the core material surface is 0.3 or more.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: August 21, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
  • Patent number: 8247084
    Abstract: An aluminum alloy brazing sheet includes a core material containing Si, Cu and Mn by a predetermined amount, the balance being Al and inevitable impurities, a sacrificial anode material disposed on one face side of the core material and containing Si, Zn and Mg by a predetermined amount, the balance being Al and inevitable impurities, and a brazing filler material disposed on the other face side of the core material and formed of an aluminum alloy, and the area fraction of Zn—Mg-based intermetallic compounds with 2.0 ?m or above particle size on the surface of the sacrificial anode material may be 1.0% or below. Or otherwise, in the aluminum alloy brazing sheet, the number density of Al—Cu-based intermetallic compounds with 0.5 ?m or above particle size inside the core material may be 1.0 piece/?m2 or below.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: August 21, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Shimpei Kimura, Toshiki Ueda, Takahiro Izumi
  • Patent number: 8227091
    Abstract: Disclosed is an aluminum alloy brazing sheet for heat exchangers, which has high strength after brazing, high corrosion resistance and excellent brazability. Specifically disclosed is an aluminum alloy brazing sheet (1a) for heat exchangers comprising a core member (2), a sacrificial member (3) formed on one side of the core member (2), and a brazing filler metal (4) formed on the other side of the core member (2) and composed of an Al—Si alloy. The sacrificial member (3) contains 0.03-0.30% by mass of Fe, 0.01-0.40% by mass of Mn, 0.4-1.4% by mass of Si, 2.0-5.5% by mass of Zn, not more than 0.05% by mass of Mg and the balance of Al and unavoidable impurities. In addition, the sacrificial member (3) has a crystal grain size of 100-400 & mgr;m after 5-minute heat treatment at 600 & ring;C during the brazing.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: July 24, 2012
    Assignees: Kobe Steel, Ltd., Denso Corporation
    Inventors: Toshiki Ueda, Akihiro Tsuruno, Fumihiro Koshigoe, Keiichi Okazaki, Takahiko Nagaya, Kenji Negura
  • Patent number: 8205786
    Abstract: Embodiments of a method are provided for joining an aluminum wire to a secondary wire, as are embodiments of an aluminum wire splice connector and embodiments of an electromagnetic coil assembly including an aluminum wire splice connector. In one embodiment, the method includes the steps providing a splice connector having a first blind bore and a second blind bore, inserting a segment of a coiled aluminum magnet wire into the first blind bore, and inserting a segment of the secondary wire into the second blind bore. The splice connector is soldered to the segments of the aluminum wire and the secondary wire inserted into the first and second blind bores, respectively, to electrically couple the coiled aluminum magnet wire and the secondary wire through the splice connector.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: June 26, 2012
    Assignee: Honeywell International Inc.
    Inventors: Gene Holden, Jacob Harding
  • Patent number: 8196804
    Abstract: The invention relates to a method for soldering components, in particular heat exchanger, in particular made of aluminum materials, aluminum alloys or wrought alloys, in a soldering furnace, in particular a continuous soldering furnace or a batch-type soldering furnace, which comprises a muffle, which is flushed with protective gas in order to create a protective atmosphere. In order to make the production of soldered components easier, during the soldering of the components the muffle is supplied with such a greatly increased amount of gas, in particular protective gas or reaction gas, that a low-oxygen protective atmosphere is created.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: June 12, 2012
    Assignee: Behr GmbH & Co. KG
    Inventors: Bradley David Abell, Klaus Dieter Förster, Bernd Grünenwald, Andreas Jenseit, Cord Völker
  • Patent number: 8158273
    Abstract: The invention relates to an aluminum alloy brazing sheet including: a thin covering material layer, a core material layer, and an Al—Si alloy brazing material layer as an intermediate material interposed between the thin covering material and the core material. The thin covering material and the core material being of aluminum alloys having a solidus temperature higher than a liquidus temperature of the brazing material so that the molten brazing material seeps onto a surface of the thin covering material when the brazing material is molten in a brazing operation. The Al—Si alloy brazing material contains from 0.01 to 0.09% mg, and the aluminum alloy brazing sheet has a total Mg-content of less than 0.06%.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: April 17, 2012
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventor: Adrianus Jacobus Wittebrood
  • Patent number: 8079509
    Abstract: A laminate aluminum block for forming an article includes a series of aluminum laminate plates to collectively form a tool body for forming an article in a forming operation. A series of aluminum brazing layers are formed for brazing together adjacent aluminum laminate plates. The series of aluminum laminate plates and the series of aluminum brazing layers are deoxidized. Draining apertures are formed through a plurality of the series of aluminum laminate plates. The series of aluminum laminate plates are stacked alternating with the aluminum brazing layers between adjacent aluminum laminate plates without a flux. The stacked series of alternating aluminum plates and aluminum brazing layers are pressed. The stacked series of alternating aluminum plates and aluminum brazing layers are heated in a vacuum furnace to a temperature wherein the aluminum brazing layers braze the aluminum laminate plates together and excess braze material drains from the draining apertures.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: December 20, 2011
    Assignee: FloodCooling Technologies, LLC
    Inventors: Matthew T. Lowney, Michael Wasylenko, Anthony Nicholas Tanascu
  • Patent number: 8043711
    Abstract: Disclosed herein is an aluminum alloy clad sheet for a heat exchanger including a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer including an Al—Si based alloy formed on the other surface of the core layer. The core layer includes a predetermined amount of Si, Cu, Mn, Ti, and Mg, the remainder including Al and inevitable impurities, and the sacrificial layer includes a predetermined amount of Si, Mn, and Zn, the remainder including Al and inevitable impurities. The core layer has a crystal grain size after the brazing heat treatment at 595° C. for 3 minutes of at least 50 ?m and less than 300 ?m. The filler layer and the sacrificial layer are defined for their thickness, and the number of intermetallic compounds in the core layer is also defined to a predetermined range. By such constitution, the aluminum alloy clad sheet has improved fatigue life and post-braze strength, high corrosion resistance, and excellent erosion resistance and brazeability.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: October 25, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Fumihiro Koshigoe, Toshiki Ueda, Shimpei Kimura, Masao Kinefuchi, Katsushi Matsumoto, Eiichi Tamura
  • Patent number: 7989087
    Abstract: A brazing fin material for heat exchangers includes a core material and a filler metal clad on each side of the core material, wherein the core material is an aluminum alloy including manganese, the filler metal is an aluminum alloy including 6 to 9.5 mass % of silicon, silicon particles in the filler metal have an average circle equivalent diameter of 3 ?m or less, and the brazing fin material has a thickness of 0.06 mm or less.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 2, 2011
    Assignees: Sumitomo Light Metal Industries, Denso Corporation
    Inventors: Yuji Suzuki, Yuji Hisatomi, Yoshiharu Hasegawa, Taketoshi Toyama, Masahiro Shimoya
  • Patent number: 7926701
    Abstract: The invention relates to an aluminum alloy strip or sheet with the following composition (% by weight): Si 0.3-1.0; Fe<1.0; Cu 0.3-1.0; Mn 0.3-2.0; Mg 0.3-3.0; Zn<6.0; Ti<0.1; Zr<0.3; Cr<0.3; Ni<2.0; Co<2.0; Bi<0.5; Y<0.5, other elements <0.05 each and 0.15 total, the remainder being aluminum, coated on at least one face with an aluminum brazing alloy containing 4 to 15% of silicon and 0.01 to 0.5% of at least one of the Ag, Be, Bi, Ce, La, Pb, Pd, Sb, Y elements or mischmetal. Sheets and strips according to the invention can be used particularly for fluxless brazing of heat exchangers.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: April 19, 2011
    Assignees: Alcan Rhenalu, Alcan Rolled Products—Ravenswood, LLC
    Inventors: Sandrine Dulac, Sylvain Henry
  • Patent number: 7875129
    Abstract: A method of assembling aluminum alloy products, such as sheets, strips or tubes, by means of fluxless brazing, where the absence of flux is made possible by using a prior treatment resulting in formation of a conversion layer on the surface of the products. The treatment involves using a solution containing K+ and F? ions and at least one acid in a quantity such that the pH of the solution is less than 3. The inventive method enables effective flux was brazing in industrial conditions, such as a for the production of heat exchangers used in motor vehicles.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: January 25, 2011
    Assignee: Alcan Rhenalu
    Inventors: Sylvestre Safrany, Michel Mediouni, Sylvain Henry, Sandrine Dulac
  • Patent number: 7841507
    Abstract: The invention concerns a process for joining a first member (1) comprising an aluminum alloy to a second member (2) comprising a titanium alloy and having at least one edge with a thickness e, comprising the steps of (i) chamfering said edge of said second member into a tapered truncated shape having on a first side a first tapering angle ?1, on a second side a second tapering angle ?2 and a minimum thickness t, wherein ?1 and ?2 are greater than or equal to zero, the sum of ?1 and ?2 is between 10° and 50° and t is between 0.05 e and 0.3 e, (ii) placing said first member and said chamfered edge of said second member (21) in an abutting relationship defining a geometry to be weld-brazed (3), (iii) heating the surface areas of said members adjacent the abutment to a temperature above the melting temperature of said aluminum alloy and below the melting temperature of said titanium alloy, in the presence of an inert gas (5) and of a filler metal (4) to obtain a weld-brazed joint.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: November 30, 2010
    Assignee: Engineered Products Switzerland Ltd.
    Inventors: Stefan Kempa, Urs Schuepbach
  • Patent number: 7829151
    Abstract: The invention relates to a method for modifying piece surfaces consisting in bringing pieces into contact with at least one type of a modifying agent in such a way that the modification of the surface is carried out.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: November 9, 2010
    Assignee: BEHR GmbH & Co. KG
    Inventors: Snjezana Boger, Peter Englert, Mathias Pfitzer, Ingo Trautwein, Sabine Sedlmeir
  • Publication number: 20100270361
    Abstract: The invention relates to an apparatus and a process for the preferably uneven application of flux to a material surface, in particular to the finned side of a plate of a plate-type radiator.
    Type: Application
    Filed: November 14, 2003
    Publication date: October 28, 2010
    Applicant: BEHR GMBH & CO.,
    Inventors: Peter Englert, Ingo Trautwein, Joan Ferrer, Vincenzo Sabetta
  • Patent number: 7771840
    Abstract: There are provided an aluminum alloy plate having high strength and excellent corrosion resistance even though the plate is made thinner, and a heat exchanger formed thereof. In an aluminum alloy plate having a core material and a surface material cladded on at least one side of the core material, the surface material includes 0.030-0.30% by mass of Fe, 0.40-1.9% by mass of Mn, 0.40-1.4% by mass of Si, and 2.0-5.5% by mass of Zn, the rest comprises Al and inevitably included impurities, and an area ratio of an intermetallic compound containing Al and Mn to a whole surface of the surface material is 1% or less.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: August 10, 2010
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiki Ueda, Akihiro Tsuruno, Fumihiro Koshigoe
  • Patent number: 7749613
    Abstract: A multi-layer aluminum brazing sheet including a core layer, interliner, braze clad layer and a sacrificial layer, in which the post-braze strength of the brazing sheet is optimized by controlling the manganese (Mn), silicon (Si), copper (Cu) and magnesium (Mg) contents of the core layer and the Mn, Si and Cu content of the interliner and the Mn, Si and Zn content of the sacrificial layer and the specifics of the braze thermal cycle. The brazing sheet maintains corrosion resistance, while optimizing post-braze strength, by utilizing 0.5 wt. % to 1.2 wt. % Cu in the interliner. Further, the interliner and sacrificial layer of the brazing sheet contain low or no magnesium to maintain the brazing sheet's braze-ability.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: July 6, 2010
    Assignees: Alcoa Inc., Kobe Steel Ltd.
    Inventors: Fumihiro Koshigoe, Akihiro Tsuruno, Toshiki Ueda, Stephen F. Baumann
  • Patent number: 7735718
    Abstract: A brazing product for fluxless brazing comprises a substrate and a filler metal-forming composition applied to the substrate. The substrate preferably comprises aluminum, an aluminum alloy or another metal and may include at least one layer of a ceramic, carbide or nitride. The filler metal-forming composition comprises a liquid-forming layer comprising silicon and a braze-promoting layer comprising one or more metals selected from the group comprising nickel, cobalt, palladium and iron. The liquid-forming layer comprises one or more material layers. Where the liquid-forming layer comprises a plurality of layers, it may include at least one layer consisting essentially of silicon.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: June 15, 2010
    Assignee: Dana Canada Corporation
    Inventors: Michael E. Graham, Richard A. Hoffman, Margaret Anna Hoffman, legal representative, Brian E. Cheadle, Kostas F. Dockus, Stefanija Kisielius, legal representative, Robert H. Krueger
  • Patent number: 7691489
    Abstract: An aluminum alloy, a clad or unclad material for a brazed product containing the alloy as a core, and a method for producing the material, wherein the material is used for manufacturing the brazed product from the alloy.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 6, 2010
    Assignee: Sapa Heat Transfer AB
    Inventors: Hans-Erik Ekström, Stefan Wass, Richard Westergård, Anders Oscarsson, Annika Moberg
  • Patent number: 7648776
    Abstract: A multi-layered brazing sheet with improved long life corrosion resistance achieved by balancing the Zn, Cu, Mn, Si and Mg content of the core and interliner alloy. The brazing sheet has a core of a 3xxx alloy, an inner braze cladding of a 4xxx alloy, and between core and inner braze cladding an interliner of a 3xxx alloy. The 3xxx alloy of the core has 0.55-1.0 wt % Cu, 0.7-1.8 wt % Mn, <0.3 wt % Mg, <0.4 wt % Zn. The 3xxx alloy of the interliner has <0.25 wt % Cu, 0.5-1.5 wt % Mn, <0.3 wt % Mg, 0.1-5.0 wt % Zn. A 1xxx or 7xxx alloy could be used for the interliner instead of the 3xxx alloy.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: January 19, 2010
    Assignees: Behr GmbH & Co. KG, Aleris Aluminum Koblenz GmbH
    Inventors: Klaus Vieregge, Sampath Desikan, Adrianus Jacobus Wittebrood, Mark Henrik Röger, Job Anthonius Van Der Hoeven, Andreas Eilemann, Matthias Gördeler, Matthias Traub, Matthias Türpe, Bernd Grünenwald
  • Patent number: 7624906
    Abstract: A method of ultrasonic brazing metal matrix composite, which forms a reinforced composite bond without filling welding wire with reinforcement or adding alloy element to generate ceramic phase, includes the steps of setting a filler metal; introducing ultrasonic vibration to braze in air; dissolving the base materials, and introducing ultrasonic wave again. The method performs the aluminum brazing at low temperature. The periodic time of brazing is shorter and the cost is lower than the conventional brazing methods. The strength, service temperature and dimensional stability of the joint are close to the base article.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: December 1, 2009
    Assignee: Harbin Institute of Technology
    Inventors: Jiuchun Yan, Weiwei Zhao, Huibin Xu, Dacheng Li, Zhiwu Xu, Shiqin Yang, Yang Zhang, Zhipeng Ma
  • Patent number: 7608345
    Abstract: A method of producing an aluminium alloy brazing sheet for the manufacturing of light brazed assemblies, wherein said brazing sheet has good formability, combined with a low susceptibility to core penetration in the end annealed as-produced condition after stretching, forming and/or shaping and brazing are disclosed. Assemblies made according to the method are also disclosed.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: October 27, 2009
    Assignee: Aleris Aluminum Koblenz GmbH
    Inventors: Achim Bürger, Scott W. Haller, Guy Laliberté
  • Patent number: 7485374
    Abstract: A heat exchanger which has i) a fin material comprising a triple-layer clad material constituted of a core material composed of an aluminum alloy containing from 0.5 to 1.8% by weight of Mn and from 0.5 to 3.0% by weight of Zn and, provided on both sides of the core material, a brazing filler material composed of an Al—Si alloy containing from 6.5 to 13.0% by weight of Si and from 0.15 to 0.60% by weight of Cu and ii) an aluminum alloy tube having a Zn concentrated surface; the both having been brazed with each other; wherein, after brazing, recrystallized grains of the core material have an average length of from 100 to 1,000 ?m in the lengthwise section of a fin and the recrystallized grains of the core material are 4 or less in average number in the thickness direction of that lengthwise section. This heat exchanger is improved in the durability of fin joints and fins themselves and their strength after corrosion.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: February 3, 2009
    Assignee: Furukawa-Sky Aluminum Corp.
    Inventors: Yoshikazu Suzuki, Nobuyuki Kakimoto, Junji Ninomiya, Yoshiyuki Oya
  • Patent number: 7451906
    Abstract: A brazing product for low temperature fluxless brazing comprises a filler metal-forming composition which melts in the range from about 380-575° C. The filler metal-forming composition comprises zinc optionally in combination with aluminum and/or silicon, and further comprises at least one braze promoter selected from nickel, cobalt, iron and palladium. The filler metal-forming composition may comprise a single layer or may comprise a number of distinct layers. The brazing product may take the form of a brazing preform or a brazing sheet or casting in which the filler metal-forming composition is deposited on a non-consumable substrate. The substrate may preferably comprise aluminum or an aluminum alloy, but may instead be comprised of one or more metals other than aluminum.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: November 18, 2008
    Assignee: Dana Canada Corporation
    Inventors: Stefanija Kisielius, legal representative, Brian E. Cheadle, Robert H. Krueger, Feng Liang, Mark S. Kozdras, Kostas F. Dockus
  • Publication number: 20080277455
    Abstract: The invention relates to a method for joining components made of a high-strength aluminum material, whereby at least two components of high-strength aluminum alloys are joined by soldering, both components separated from each other by at least one aluminum layer with a lower magnesium content compared with the contact surfaces before joining is carried out, and a heat exchanger produced according to this method.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 13, 2008
    Inventors: Hanskarl Hoffmann, Rahul Rajagopalan
  • Patent number: 7425765
    Abstract: A high melting point solder alloy superior in oxidation resistance, in particular a solder alloy provided with both a high oxidation resistance and high melting point suitable for filling fine through holes of tens of microns in diameter and high aspect ratios and forming through hole filling materials, comprising a zinc-aluminum solder alloy containing 0.001 wt % to 1 wt % of aluminum and the balance of zinc and unavoidable impurities.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: September 16, 2008
    Assignee: Fujitsu Limited
    Inventors: Masayuki Kitajima, Tadaaki Shono, Ryoji Matsuyama
  • Patent number: 7377418
    Abstract: When aluminium products are preheated in a preheating furnace up to about 500° C. before they are brazed with a flux in a heating furnace, a nitrogen atmosphere in the preheating furnace is made convectional by fans for improving heating efficiencies and also for having the oxygen which is brought into the preheating furnace as a disturbance thereof and scattered about in the nitrogen atmosphere, contacted to furnace inner walls of the preheating furnace which are made from carbonaceous materials, and reacted therewith so as to be changed to CO, resulting in keeping the oxygen concentration of nitrogen atmosphere low, whereby when the aluminium products are brazed by heating them in a continuous atmosphere furnace including said preheating furnace and said heating furnace, heating time thereof is shorten and the brazing is made more economically than before.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: May 27, 2008
    Assignees: Kanto Yakin Kogyo Kabushiki Kaisha, Denso Corporation
    Inventors: Masashi Fuse, Hidetaka Ikita, Shin-ichi Takahashi, legal representative, Susumu Takahashi
  • Patent number: 7374827
    Abstract: A metallurgical product consists essentially of a core aluminum alloy, purposefully tailored through chemistry and processing route to resist recrystallization during the brazing cycle to intentionally exploit the higher strengths immediately after brazing of a deformed and recovered microstructure, the core aluminum alloy being bonded on one side to an aluminum alloy interliner designed to be resistant to localized erosion, which, in turn, is bonded to a 4xxx calling alloy.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: May 20, 2008
    Assignee: Alcoa Inc.
    Inventor: Raymond J. Kilmer
  • Patent number: 7353980
    Abstract: A method for producing aluminum-containing honeycomb bodies includes providing at least partly structured aluminum-based metal foils. The at least partly structured metal foils are stacked and/or wound to form a honeycomb structure having passages. The metal foils are heated from an open end face of the passages with at least one radiant heater. The honeycomb structure is heated in at least one subregion in such a way that the at least one subregion has a temperature between approximately 450° C. and approximately 600° C. after approximately 2 seconds to approximately 30 seconds. The metal foils are connected together in the at least one subregion by technical joining.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: April 8, 2008
    Assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Simone Wilks, Arndt-Udo Rolle