Uacj Corporation

Denso Corporation

Furukawa-sky Aluminum Corporation

Akio Niikura

Atsushi Fukumoto

Makoto Ando

Takashi Murase

Yoshiyuki Oya

Kazuko Fujita

Kenji Negura

Sadayuki Kamiya

Tatsuo Ozaki

Yoichi Kojima

Yoichiro Bekki

Masaki Harada

Toshihide Ninagawa

Keiichi Okazaki

Junichi Mochizuki

Tomohito Kurosaki

Taketoshi Toyoma

Masafumi Saito

Hiroshi Kano

Takuya Murata

Yutaka Yanagawa

Noriyuki Yamada

Sunao Fukuda

Masaki Shimizu

Kyoji Inukai

Akira Kawahara

Kazumitsu Sugano

Shota Terachi

Yoshiaki Ogiwara

Yoshihiko Kamiya

Tomohiro Ito

Kaiichi Okazaki

Keiichi c/o Denso Corporation Okazaki

Kenji c/o Denso Corporation Negura

Toshihide c/o Denso Corporation Ninagawa

Tatsuo c/o Denso Corporation Ozaki

A method for producing an aluminum alloy clad material having a core material and a sacrificial anode material clad on at least one surface of the core material, wherein the core material comprises an aluminum alloy comprising 0.050 to 1.5 mass % (referred to as '%' below) Si, 0.050 to 2.0% Fe and 0.50 to 2.00% Mn; the sacrificial anode material includes an aluminum alloy containing 0.50 to 8.00% Zn, 0.05 to 1.50% Si and 0.050 to 2.00% Fe; the grain size of the sacrificial anode material is 60 &#x3bc;m or more; and a ratio R/Ris 0.30 or less, wherein R(&#x3bc;m) is a grain size in a thickness direction and R(&#x3bc;m) is a grain size in a rolling direction in a cross section of the core material along the rolling direction; a production method thereof; and a heat exchanger using the clad.

Method for producing aluminum alloy clad material

An aluminum alloy brazing sheet which is thin but has excellent weldability and post-brazing strength. An aluminum alloy brazing sheet having a core material comprising an aluminum alloy, an Al&#x2014;Si based brazing filler metal clad on one surface of the core material and a sacrificial anode material clad on the other surface of the core material: wherein the core material comprises certain amounts of Si, Fe, Cu and Mn and certain amounts of one, two or more selected from Ti, Zr, Cr and V; the sacrificial anode material comprises certain amounts of Si, Fe, Mg and Zn; in a cross section parallel to the longitudinal direction and along the thickness direction, the interface between the core material and the sacrificial anode material includes 300 pieces/mm or less of an Al&#x2014;Mg&#x2014;Cu based intermetallic compound; and the core material and the sacrificial anode material have an unrecrystallized structure.

Aluminum alloy brazing sheet and method for producing same

An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; more than 1.0 mass % but not more than 2.0 mass % of Fe; 0.4 to 1.0 mass % of Mn; and 0.4 to 1.0 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 &#x3bc;m is less than 1&#xd7;10particles/mm, and that a density of second phase particles having a circle-equivalent diameter of 0.1 &#x3bc;m or more is 1&#xd7;10particles/mmor more, wherein a tensile strength before braze-heating, TS(N/mm), a tensile strength after braze-heating, TS(N/mm), and a fin sheet thickness, t (&#x3bc;m), satisfy: 0.4&#x2264;(TS&#x2212;TS)/t&#x2264;2.1, and wherein the sheet thickness is 150 &#x3bc;m or less; and a method of producing the same.

Aluminum alloy fin material for heat exchangers, and method of producing the same

An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; 0.1 to 1.0 mass % of Fe; 0.8 to 1.8 mass % of Mn; and 0.4 to 2.5 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 &#x3bc;m is less than 1&#xd7;10particles/mm, and that a density of second phase particles having a circle-equivalent diameter of 0.1 &#x3bc;m or more is 5&#xd7;10particles/mmor more, wherein a tensile strength before braze-heating, TS(N/mm), a tensile strength after braze-heating, TS(N/mm), and a sheet thickness of the fin material, t (&#x3bc;m), satisfy a relationship: 0.4&#x2264;(TS&#x2212;TS)/t&#x2264;2.1, and wherein the sheet thickness is 150 &#x3bc;m or less; and a method of producing the same.

An aluminum alloy brazing sheet having high corrosion resistance is provided, which develops the sacrificial anticorrosion effect in both surfaces of the sheet, which has the brazing function in one of both the surfaces, and which prevents the occurrence of preferential corrosion. A channel forming component for a vehicular heat exchanger is also provided by utilizing the aluminum alloy brazing sheet. An aluminum alloy brazing sheet having high corrosion resistance includes an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, wherein the filler material, the sacrificial anode material, and the core have respective predetermined alloy compositions. A channel forming component for a vehicular heat exchanger is manufactured using the aluminum alloy brazing sheet having high corrosion resistance.

High corrosion-resistant aluminum alloy brazing sheet and channel forming component for vehicular heat exchanger using same

Disclosed is an aluminum alloy material for a heat exchanger fin, the aluminum alloy material containing Si: 1.0% to 5.0% by mass, Fe: 0.1% to 2.0% by mass, and Mn: 0.1% to 2.0% by mass with balance being Al and inevitable impurities, wherein 250 pieces/mmor more to 7&#xd7;104 pieces/mmor less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 &#x3bc;m are present in a cross-section of the aluminum alloy material; and wherein 10 pieces/mmor more and 1000 pieces/mmor less of the Al&#x2014;Fe&#x2014;Mn&#x2014;Si-based intermetallic compounds having equivalent circle diameters of more than 5 &#x3bc;m are present in a cross-section of the aluminum alloy material. The aluminum alloy material may further contain one or more additive elements of Mg, Cu, Zn, In, Sn, Ti, V, Zr, Cr, Ni, Be, Sr, Bi, Na, and Ca.

Aluminum alloy material for heat exchanger fin, manufacturing method for same, and heat exchanger using the aluminum alloy material

An aluminum alloy brazing sheet having a good brazing property that prevents diffusion of molten filler material in a core material of the aluminum alloy brazing sheet during a brazing process and which has a superior corrosion resistance to an exhaust gas condensate water after the brazing process is disclosed. A method of manufacturing of the aluminum alloy brazing sheet also is disclosed. A high corrosion-resistant heat exchanger that employs the aluminum alloy brazing sheet also is disclosed.

High corrosion-resistant aluminum alloy brazing sheet, method of manufacturing such sheet, and corrosive-resistant heat exchanger using such sheet

A highly corrosion resistant and highly formable aluminum-alloy clad material, a method for producing the same, a heat exchanger using the same and a method for producing the same are shown. The present aluminum-alloy clad material has an aluminum alloy core material, an intermediate layer material clad on one surface of the core material and a brazing filler metal clad on the surface of the intermediate layer material that is not on the core material side, wherein a crystal grain size of the intermediate layer material before brazing heating is 60 &#x3bc;m or more, and in a cross section of the core material in a rolling direction before brazing heating, when R1 (&#x3bc;m) represents the crystal grain size in a plate thickness direction, and R2 (&#x3bc;m) represents the crystal grain size in the rolling direction, R1/R2 is 0.30 or less.

Aluminum-alloy clad material and production method therefor, and heat exchanger using said aluminum-alloy clad material and production method therefor

A highly corrosion resistant and highly formable cladded aluminum-alloy material, a method for producing the same, a heat exchanger using the same and a method for producing the same are shown. The present cladded aluminum-alloy material has an aluminum alloy core material, an intermediate layer material clad on one surface of the core material and a brazing filler metal clad on the intermediate layer material surface which is not at the core material side, wherein a crystal grain size of the intermediate layer material before brazing heating is 60 &#x3bc;m or more, and in a cross section of the core material in a rolling direction before brazing heating, when R(&#x3bc;m) represents the crystal grain size in a plate thickness direction, and R(&#x3bc;m) represents the crystal grain size in the rolling direction, R/Ris 0.30 or less.

Cladded aluminum-alloy material and production method therefor, and heat exchanger using said cladded aluminum-alloy material and production method therefor

Aluminum alloy material containing Si: 1.0 to 5.0 mass % and Fe: 0.01 to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mmor more to 7&#xd7;10pcs/mmor less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 &#x3bc;m are present in a cross-section of the aluminum alloy material, while 100 pcs/mmor more to 7&#xd7;10pcs/mmor less of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 &#x3bc;m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.

Aluminum alloy material, aluminum alloy structure, and manufacturing method for same

An aluminum alloy brazing sheet having a core material of an aluminum alloy, and a filler material cladded on the core is disclosed. The core material is an aluminum alloy having about 0.05 to about 1.2 mass Si, about 0.05-about 1.0 mass % Fe, about 0.05-about 1.2 mass % Cu, and about 0.6-about 1.8 mass % Mn, balance Al and the inevitable impurities. The filler material includes an aluminum alloy having about 2.5-about 13.0 mass % Si. Also, there is provided a method of manufacturing such an aluminum alloy brazing sheet.

High-strength aluminum alloy brazing sheet and method of manufacture

A first layer () and a second layer () are layered with an intermediate layer () therebetween. A clad material () is manufactured by heating and bonding the layered body at a temperature, at which the ratio of the mass of a liquid phase generated from the intermediate layer () is 5% or more and 35% or less, and by rolling the body. The clad material may comprise the clad material () which is a two-layer material formed of the first layer () and the second layer () as described above, as well as a third layer, a fourth layer, a fifth layer, and the like.

Method for manufacturing aluminum alloy cladding material

An aluminum alloy material contains Si: 1.0 mass % to 5.0 mass % and Fe: 0.01 mass % to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mmor more to 7&#xd7;10pcs/mmor less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 &#x3bc;m are present in a cross-section of the aluminum alloy material, while 100 pcs/mmto 7&#xd7;10pcs/mmof Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 &#x3bc;m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.

A method of bonding two members including an aluminum alloy material as one member, and an aluminum alloy material or a pure aluminum material as the other member, the method being characterized in: that the aluminum alloy material for the one member and the aluminum alloy material for the other member are composed of an aluminum alloy containing Mg of not more than 0.5 mass %; and that a bonding process is carried out in a furnace having a non-oxidizing atmosphere at a temperature, at which a ratio of a mass of liquid phases generated in the aluminum alloy material defined as the one member to the total mass of the aluminum alloy material falls within a range from 5% to 35%, on the condition that there is either a coated fluoride-based flux or a coated chloride-based flux between both of the members to be bonded.

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Tokyo, Japan

Akio Niikura