Denso Corporation

Uacj Corporation

Other

Nippondenso Co., Ltd.

Kobe Steel, Ltd.

Somar Corporation

Harima Chemicals, Incorporated

Mitsubishi Aluminum Company, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Shoei Teshima

Naoki Yamashita

Michiyasu Yamamoto

Hayaki Teramoto

Ichiro Taninaka

Hirokazu Tanaka

Makoto Ando

Masaki Harada

Shimpei Kimura

Yoshiharu Hasegawa

Takahiro Izumi

Yuji Hisatomi

Tatsuhiko Nonoyama

Taichi Asano

Toshikazu Tanaka

Yuji Shibuya

Manabu Hasegawa

Shusuke Otsuki

Kouji Hiragami

Tomohiro Shoji

Hiroshi Ogawa

Yoshiyuki Yamauchi

Kotaro Kitawaki

Hiroshi Ikeda

Akihiro Tsuruno

Jun Abei

Akira Itoh

Takashi Murase

Ken Muto

Masaki Shimizu

Osamu Hakamata

Masakazu Edo

Takeshi Iguchi

Shohei Iwao

Koji Hirao

Kouta Hagihara

Masakazu Morimoto

Akira Yanagida

Wataru Narita

Haruhiko Otsuka

Yuusuke Kitoh

Tomoaki Akazawa

Tetsushi Takata

Yasuyuki Tanaka

Masaki Teruse

Kinya Yamamoto

Satoshi Asai

Masumi Kuroyama

Tsutomu Usami

Hikaru Shibata

Kouichi Nakashita

Ryoko Fujimura

Shigeki Nakanishi

Kazuyoshi Nakashima

An aluminum alloy fin material for a heat exchanger in the present invention comprises an aluminum alloy having a composition containing Mn: 1.2 to 2.0%, Cu: 0.05 to 0.20%, Si: 0.5 to 1.30%, Fe: 0.05 to 0.5%, and Zn: 1.0 to 3.0% by mass and a remainder comprising Al and an unavoidable impurity, further containing one or two or more of Ti: 0.01 to 0.20%, Cr: 0.01 to 0.20% and Mg: 0.01 to 0.20% by mass as desired, and, after heating in brazing, has a tensile strength of 140 MPa or more, a proof stress of 50 MPa or more, an electrical conductivity of 42% IACS or more, an average grain diameter of 150 &#x3bc;m or more and less than 700 &#x3bc;m, and a potential of &#x2212;800 mV or more and &#x2212;720 mV or less.

Aluminum alloy fin material for heat exchanger excellent in strength, electrical conductivity, and brazeability, method for manufacturing aluminum alloy fin material for heat exchanger, and heat exchanger comprising aluminum alloy fin material for heat exchanger

An aluminum alloy clad material includes a core material, one side being clad with cladding material, the other side being clad with cladding material, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, the cladding materialincluding an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding materialincluding an aluminum alloy that includes 3 to 13% of Si, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding materialand the Si content Y (%) in the cladding materialsatisfy the value (Y&#x2212;X) is &#x2212;1.5 to 9%.

Aluminum alloy cladding material for heat exchanger

Provided is an aluminum alloy clad material including an aluminum alloy core material, an intermediate layer material that is clad on one surface of the core material, and a first brazing filler metal that is clad on a surface of the intermediate layer material, the surface not being on the core material side, wherein the core material, the intermediate layer material, and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al&#x2014;Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 &#x3bc;m inclusive in the intermediate layer material before brazing heating is at least 1.0&#xd7;10pieces/mm, and the existence density of Al&#x2014;Mn based intermetallic compounds having a circle-equivalent diameter between 0.1 and 1.0 &#x3bc;m inclusive in the intermediate layer material after brazing heating is at least 1.0&#xd7;10pieces/mm. Further provided is a method for producing the aluminum alloy clad material.

Aluminum alloy cladding material and manufacturing method therefor

Provided is an aluminum alloy clad material including an aluminum alloy core material and a first brazing filler metal that is clad on one surface or both surfaces of the core material, wherein the core material and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of Al&#x2014;Mn based intermetallic compounds having a circle-equivalent diameter of at least 0.1 &#x3bc;m in the first brazing filler metal before brazing heating is at least 1.0&#xd7;10pieces/mm, and the existence density of Al&#x2014;Mn based intermetallic compounds having a circle-equivalent diameter of at least 2 &#x3bc;m in the first brazing filler metal after brazing heating is at least 300 pieces/mm. Further provided are a method for producing the aluminum alloy clad material and a heat exchanger employing the aluminum alloy clad material.

Aluminum alloy cladding material, manufacturing method therefor, and heat exchanger using said aluminum alloy cladding material

This brazed structure includes a brazing sheet that has been brazed and that comprises: a core material comprising an aluminum alloy which contains 0.3-1.0 mass %, excluding 0.3 mass %, Si, 0.6-2.0 mass %, excluding 0.6 mass %, Mn, 0.3-1.0 mass %, excluding 0.3 mass %, Cu, and 0.15-0.5 mass %, excluding 0.15 mass %, Mg, with the remainder comprising Al and unavoidable impurities, and has an average crystal grain diameter of 50 &#x3bc;m or larger and in which an Mg&#x2014;Si intermetallic compound and an Al&#x2014;Mg&#x2014;Si&#x2014;Cu intermetallic compound account for 40% or less of the grain boundaries; and, clad to the core material, a brazing material comprising an Al&#x2014;Si alloy.

Brazed structure

A brazing sheet formed of an aluminum alloy and exhibiting excellent post-brazing strength, corrosion resistance and brazability with a thickness of less than 200 &#x3bc;m is provided. The brazing sheet includes a core layer, a filler layer of an Al&#x2014;Si based alloy on one side of the core layer, and a sacrificial layer on the other side of the core layer. The core layer includes more than 1.5 mass % and 2.5 mass % or less of Cu, 0.5 mass % to 2.0 mass % of Mn, Al, and inevitable impurities. The sacrificial layer includes 2.0 mass % to 7.0 mass % of Zn, more than 0.10 mass % and 3.0 mass % or less of Mg, Al, and inevitable impurities. The filler layer and the sacrificial layer each have a thickness of 15 &#x3bc;m to 50 &#x3bc;m. A total clad rate of the filler layer and the sacrificial layer is equal to or less than 50%.

Brazing sheet formed of aluminum alloy

An aluminum alloy clad material includes a core material, an inner cladding material, and a sacrificial anode material, one side of the core material being clad with the inner cladding material, the other side of the core material being clad with the sacrificial anode material, the core material being formed of an Al&#x2014;Mn alloy that includes 0.6 to 2.0 mass % of Mn and 0.4 mass % or less of Cu, with the balance being aluminum and unavoidable impurities, the inner cladding material being formed of an Al&#x2014;Mn&#x2014;Cu alloy that includes 0.6 to 2.0 mass % of Mn and 0.2 to 1.5 mass % of Cu, with the balance being aluminum and unavoidable impurities, and the sacrificial anode material being formed of an Al&#x2014;Zn alloy that includes 0.5 to 10.0 mass % of Zn, with the balance being aluminum and unavoidable impurities.

Aluminum alloy clad material and heat exchanger that includes tube obtained by forming the clad material

The disclosed method relates to manufacturing a heat exchanger which causes no brazing defects, and a heat exchanger manufactured by the method. The method relates to manufacturing a heat exchanger having an aluminum alloy tube defining a cooling-medium flowing passage and a copper alloy tube defining a water flowing passage, wherein a heat exchange is carried out between a cooling medium flowing through the cooling-medium flowing passage and water flowing through the water flowing passage. The aluminum alloy tube and the copper alloy tube are brazed to each other at a temperature of less than 548&#xb0; C.

Manufacturing method of heat exchanger, and heat exchanger manufactured by such manufacturing method

A paste composition for aluminum brazing of the invention contains 40 to 65% by weight of a metal powder for brazing (a), 5 to 35% by weight of a fluoride type flux (b), 1 to 10% by weight of a methacrylic acid ester type polymer (c), and 10 to 40% by weight of an organic solvent (d); and the component (d) is a hydrocarbon type organic solvent having no aromatic ring and no hydroxyl group and the composition is in a paste-like state having a viscosity of 6,000 to 200,000 mPa&#xb7;s at 23&#xb0; C. and accordingly, the storage stability and applicability (practically, discharge property and pressure stability by using a dispenser) and brazing property can be improved in good balance.

Paste composition for aluminum brazing

A multi-layered adhesive sheet is provided, including a metal sheet and at least two thermosetting resin layers having different functions on at least one side of the metal sheet.

Multi-layered adhesive sheet, material for forming heat exchanger, and heat exchanger

A heat-exchanging plate member has a pair of heat-exchanging plates, each of which has projection ribs and fluid passage forming portions arranged alternately. The pair of plates are connected to each other in a manner that the projection ribs formed in the plates, respectively, face outwardly with each other, and the projection ribs formed in one of the plates are connected to the fluid passage forming portions formed in the other of the plates, respectively, at a temperature where the strength of material is not lowered in a connecting process.

Heat exchanger having projecting fluid passage

An aluminum extruded multi-cavity flat tube for use in an automotive heat exchanger having excellent brazing characteristics. At least one of the flat surfaces of said aluminum extruded multi-cavity flat tube is coated with a flux composition comprising a brazing flux and a synthetic resin based, as its main constituent, on a methacrylate homopolymer or a methacrylate copolymer or, alternatively, with a brazing composition comprising a brazing flux, brazing metals, and said synthetic resin. In a preferred embodiment, such a coating is provided by applying to a surface of an aluminum extruded multi-cavity flat tube, said compositions as added to an organic solvent and having a molecular structure wherein the atomic ratio of carbon to oxygen is between 2 and 3, by a roll-transfer printing technique.

Aluminum-extruded multi-cavity flat tube having excellent brazing characteristics for use in automotive heat exchanger and manufacturing method therefor

A brazing composition for aluminum materials capable of functioning as a flux and a brazing material with a single component and providing a solid brazed joint exhibiting little local fusion. The brazing composition for aluminum materials which has the function of removing the oxide film on the surface of the aluminum material to be joined at a temperature lower than the melting point of the aluminum material and forming a eutectic aluminum alloy braze which fuses at such a low temperature by reaction with the aluminum materials, wherein the brazing composition comprises a first powder comprising at least one or more M&mdash;Si&mdash;F compounds comprising, in addition to at least Si and F, hydrogen or an alkaline metal or hydrates thereof or comprises this first powder as an component.

Brazing composition for aluminum material, aluminum material for brazing, and method of brazing aluminum material

The present invention is a water-based binder used when manufacturing aluminum brazed products such as engine radiators, condensers for car air conditioners, and the like. The water-based binder is obtained by saponifying an ester methacrylate polymer that has an acid value and a glass transition temperature within specified ranges. In the presence of an alcohol that is water soluble and volatile and has a flash point higher than a specified temperature, the brazing composition, in which this binder and flux and the like are mixed, does not have the risk of catching on fire or exploding and also has excellent wettability and can be uniformly coated onto an aluminum material. Furthermore, when a binder in which polyoxirane or polyoxazoline is added as a sub component to this ester methacrylate polymer, which is the main component, the room temperature adhesion of the brazing composition onto the aluminum materials is further improved, and thickening of this composition during coating or storage is also prevented.

Water-base binder for aluminum material brazing, brazing composition, and method of brazing with the composition

A brazing sheet for vacuum brazing is provided wherein the sheet is cladded with an aluminum alloy brazing filler metal having a content of Mg sufficient for vacuum brazing but less than 1.2 wt. % and wherein the Mg.sub.2 Si particle size among Mg contained in the metal is not more than 5 .mu.m as a typical value.

Brazing sheet for vacuum brazing

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Kariya, Japan

Shoei Teshima