Mitsubishi Aluminum Kabushiki Kaisha

Mitsubishi Aluminum Company, Ltd.

Calsonic Kansei Corporation

Masami Asano

Yo Takeuchi

Ken Toma

Hajime Kudo

Yasunori Hyogo

Masayoshi Shinhama

Masaya Katsumata

Shoji Takeuchi

Noriaki Takahashi

Takumi Funatsu

Masahiro Sogabe

An aluminum alloy-based extruded multi-path flat tube having a multiple number of passageways extending internally through the flat tube in parallel with one another and adapted to be coupled to other such flat tubes to form a heat exchanger after performing a brazing operation with the flat tube having a surface layer extending inwardly from the external surface containing at least 5% non-recrystallized grains and having an inner layer extending from the surface area containing at least 30% recrystallized grains.

Aluminum alloy-based extruded multi-path flat tubes for the heat exchanger and method of manufacture thereof

A method of producing a heat exchanger comprising abutting a tube made of an aluminum material and fins made of an aluminum material, applying to the resulting abutments a flux containing zinc halide, and thereafter conducting a reaction soldering in an inert gas atmosphere. The assembled tube and fins applied with the flux may be moved in a position to enhance the formation of zinc deposited by the reaction soldering during the drying step of the flux. The heat exchanger produced by this method has a thick and uniform Zn coating at the joints with good mechanical strength and surface conditions.

Heat exchanger and method of producing same

A brazed aluminum article comprising at least two aluminum members brazed together with a filler metal, which consists essentially of:

Brazed aluminum article

A method of producing a heat exchanger comprising abutting a tube made of an aluminum material and fins made of an aluminum material, applying to the resulting abutments a flux containing zinc halide, and thereafter conducting a reaction soldering in an inert gas atmosphere. The assembled tube and fins applied with the flux may be moved into a position to enhance the formation if zinc deposited by the reaction soldering during the drying step of the flux. The heat exchanger produced by this method has a thick and uniform Zn coating at the joints with good mechanical strength and surface conditions.

Method of brazing a heat exchanger using a reaction flux

An aluminum alloy sheet as a fin material for tubes of a heat exchanger, excellent in high-temperature sagging resistance and sacrificial anode property and having a high room-temperature strength, which consists essentially of:

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Susono, Japan

Masami Asano