Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Alcoa Inc.

T.rad Co., Ltd.

Akihiro Tsuruno

Masayuki Takada

Takashi Inaba

Toshiki Ueda

Fumihiro Koshigoe

Yoshinori Kato

Tomohiro Nishimura

Makoto Morishita

Masaki Tanigawa

Yasuhiro Nishioka

Kenji Tokuda

Jitsuto Shikata

Kenji Harada

Masanori Ikeda

Naoki Sakashita

Katsuhiro Matsukado

Michiyasu Yamamoto

Hideo Fujimoto

Jun Hisamoto

Takahiro Izumi

Masao Takemoto

Hiroshi Sato

Shoei Teshima

Hayaki Teramoto

Kouki Ikeda

Stephen F Baumann

Shimpei Kimura

Shogo Yamada

Kenji Negura

Masahiro Kawaguchi

Keiichi Okazaki

Takahiro Shinoda

Shingo Oono

Yuji Shibuya

Nagisa Takee

Kenichiro Yoshida

Manabu Hasegawa

Eiki Usui

Kikuo Toyose

Takahiko Nagaya

Souichi Hayashi

Asao Mochizuki

Masamichi Aono

Toshihiro Chikada

Kikurou Toyose

Yoshikazu Miyano

Tatsuki Hashimoto

Hajime Sugito

Masayuki Makita

Arisu Fujii

Shin Takewaka

Koichi Yamamoto

Toshihide Ninagawa

Yasunori Nishioka

An aluminum alloy brazing sheet including a core material, a sacrificial material provided on one surface of the core material, a brazing filler material provided on the other surface side of the core material, and an intermediate layer provided between the core material and the brazing filler material. The core material contains Si: 0.30 to 1.00 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.60 to 1.20 mass %, Mg: 0.05 to 0.80 mass %, and Al. The sacrificial material contains Si: 0.10 to 1.20 mass %, Zn: 2.00 to 7.00 mass %, Mn: 0.40 mass % or less, and Al. The intermediate layer contains Si: 0.05 to 1.20 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.10 to 1.20 mass %, and Al.

Aluminum alloy brazing sheet

The present invention provides a brazing filler material in which the formation of coarse Si particles is suppressed, and a brazing sheet using the same. The brazing filler material includes Si: 3.5% by mass or more and 13.0% by mass or less, Ti: 0.001% by mass or more and 0.05% by mass or less, V: more than 0.0005% by mass and 0.05% by mass or less, and B: 0.001% by mass or less (excluding 0% by mass), with the balance being Al and inevitable impurities, and the value of V/Ti, which is a value obtained by dividing the V content (% by mass) by the Ti content (% by mass) is 0.05 or more and 5 or less.

Brazing filler material and brazing sheet

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

Disclosed is an aluminum alloy brazing sheet () for heat exchangers, the brazing sheet provided with a core material () and a filler material () that comprises an Al&#x2014;Si&#x2014;Zn alloy and is formed on at least one side of the core material (). The core material () has a pitting potential of &#x2212;650 mV or more (vs. Ag/AgCl). The filler material () has a zinc concentration of from 1 to 10 percent by mass; a liquid fraction X, at the brazing temperature, satisfying the relation 0.3&#x2266;X&#x2266;0.88; and a clad ratio d (%) satisfying the relation 15&#x3c;d&#x2266;30. The filler material has a product (X&#xd7;d) of the liquid fraction X and the clad ratio d (%) satisfying the relation 6&#x2266;X&#xd7;d)&#x2266;23.

Aluminum alloy brazng sheet for heat exchangers and aluminum alloy brazed article for heat exchangers

Skin material of a clad material is composed of one or more layers, each layer of the skin materials is made of a metal different from the core material in their component compositions, and at least one layer of the skin material has a cast microstructure, when the skin material is superposed on either of one or both faces of the core material.

Method for manufacturing clad material and equipment for manufacturing the same

The present invention provides an aluminum alloy material which is used as a core material for an aluminum alloy brazing sheet and has superior strength at a high temperature. The aluminum alloy material of the present invention is used as a core material Cfor an aluminum alloy brazing sheet B(or B) which has a filler alloy F formed on at least one side of the core material C. The aluminum alloy material contains more than 2.5% by mass and 3.5% by mass or less of Cu, and the balance being made of aluminum and unavoidable impurities.

Aluminum alloy material and aluminum alloy brazing sheet

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 () for heat exchangers comprising a core member (), a sacrificial member () formed on one side of the core member (), and a brazing filler metal () formed on the other side of the core member () and composed of an Al&#x2014;Si alloy. The sacrificial member () 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 () has a crystal grain size of 100-400 & mgr;m after 5-minute heat treatment at 600 & ring;C during the brazing.

Aluminum alloy brazing sheet for heat exchanger

A brazing sheet of aluminum alloy composed of a core material and a first brazing filler metal covering one surface of the core material. The core material contains as an essential component 0.2-1.0 mass % of Cu and as optional components at least one species of no more than 1.5 mass % of Si, no more than 1.8 mass % of Mn, no more than 0.35 mass % of Ti, and no more than 0.5 mass % of Mg, with the remainder being Al and inevitable impurities. The first brazing filler metal has a liquid phase ratio (X %) at 600&#xb0; C. and a thickness (Y &#x3bc;m) such that X and Y satisfy the following relationship: (1) 30&#x2266;X&#x2266;80, (2) Y&#x2267;25, and (3) 1000&#x2266;X&#xd7;Y&#x2266;24000. The brazing sheet provides good brazeability and maintains high corrosion resistance after brazing on the surface cladded with the brazing filler metal.

Brazing sheet of aluminum alloy

Equipment for manufacturing skin material of a clad material includes a casting apparatus which melts and mixes a metal for the skin material different from the core material in their component compositions, and casts the skin material; an ingot-cutting apparatus which cuts an ingot for skin material which is cast by the casting apparatus; and a conveying apparatus which conveys the ingot for skin material among each apparatus. The ingot-cutting apparatus is a slicing apparatus which slices the ingot for skin material into a predetermined thickness.

A method for manufacturing a clad material composed of a core material and one or more skin materials which are superposed on either one or both faces of the core material, includes a clad material preparation process where an ingot for core material is manufactured by dissolving and casting a metal, and an ingot for skin material is manufactured by dissolving and casting a different metal for skin material, without hot rolling. The ingot for skin material is superposed as a skin material at a predetermined position of either one or both faces of the ingot for core material and the superposed material is hot-rolled to manufacture a clad material.

A method for manufacturing a clad material composed of a core material and one or more skin materials which are superposed on either one or both faces of the core material, includes a clad material preparation process where an ingot for core material is manufactured by melting and casting a metal, and an ingot for skin material is manufactured by melting and casting a different metal for skin material, without hot rolling. The ingot for skin material is superposed as a skin material at a predetermined position of either one or both faces of the ingot for core material and the superposed material is hot-rolled to manufacture a clad material.

The present invention relates to an aluminum alloy brazing sheet () for a heat exchanger improved in a life including a fatigue in a plastic area and an aluminum alloy heat exchanger tube () using the brazing sheet, which is composed of: a core material () of an Al&#x2014;Mn series alloy; a skin material () of any one of an Al&#x2014;Zn series alloy, an Al&#x2014;Zn&#x2014;Mg series alloy, an Al&#x2014;Si&#x2014;Mn&#x2014;Zn series alloy, and an Al&#x2014;Si&#x2014;Mn&#x2014;Mg&#x2014;Zn series alloy clad on one side of the core material; and a brazing material () of an Al&#x2014;Si series alloy clad on the other side of the core material, and is adapted so that an X-ray diffraction intensity ratio of the aluminum alloy brazing sheet satisfies a relational expression of I/(I+I+I+I)&#x2267;0.4.

Aluminum alloy brazing sheet and aluminum alloy tube for heat exchanger

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.

Aluminum alloy plate and heat exchanger formed thereof

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.

Multilayer braze-able sheet

Surface-treated Al or Al alloy materials which excel in adhesive property, formability, weldability, phosphatability, paint adhesion, and post-painting corrosion resistance are provided by forming a coated layer containing Zn and Fe or one or more of Si oxides, Al oxides and Al hydroxides together therewith, on the surface of Al or Al alloy base. The surface-treated Al or Al alloy materials are useful as metallic material to be painted and used after press forming and other processing, spot or laser welding and phosphating, including panel materials for automobiles and other various vehicles, shells for housefold electrical apparatus, and building materials.

Surface treated aluminum or aluminum alloy material

Growing community of inventors

Moka, Japan

Akihiro Tsuruno