METHOD OF JOINING ALUMINUM ALLOYS

WIPO Patent Application WO/2011/152556

A1

[Problem] To provide a novel joining method that is highly reliable and imparts good joining characteristics in a furnace without using a joining member. [Solution] A method of joining aluminum alloys for joining a first member to be joined, which is formed from an aluminum alloy, and second member to be joined, which is formed from either an aluminum alloy material or pure aluminum, said method being characterized in that the aluminum alloys constituting the first and second members to be joined have an Mg content of 0.5mass% or less, and in that the members to be joined are joined in a furnace that has a nonoxidative atmosphere while in a state in which a fluorine- or chlorine-based flux has been coated between the joining members and at a temperature at which the ratio of the mass of the liquid phase generated within the aluminum alloy of the first member to be joined relative to the total mass of said aluminum alloy is 5-35%, inclusive.

MURASE Takashi (14-1 Sotokanda 4-chome Chiyoda-ku Tokyo, 70, 〒1018970, JP)
村瀬崇 (〒70 東京都千代田区外神田４丁目１４番１号　古河スカイ株式会社内 Tokyo, 〒1018970, JP)
FUJITA Kazuko (14-1 Sotokanda 4-chome Chiyoda-ku Tokyo, 70, 〒1018970, JP)

JP2011/062899

December 08, 2011

June 06, 2011

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FURUKAWA-SKY ALUMINUM CORP. (14-1 Sotokanda 4-chome, Chiyoda-ku Tokyo, 70, 〒1018970, JP)
古河スカイ株式会社 (〒70 東京都千代田区外神田４丁目１４番１号 Tokyo, 〒1018970, JP)
MURASE Takashi (14-1 Sotokanda 4-chome Chiyoda-ku Tokyo, 70, 〒1018970, JP)
村瀬崇 (〒70 東京都千代田区外神田４丁目１４番１号　古河スカイ株式会社内 Tokyo, 〒1018970, JP)

B23K20/00; B23K20/14; B23K20/16; B23K20/22

OHASHI Kunihiko (Hongo Sunpou Building, 6th Floor19-7 Hongo 3-chome, Bunkyo-ku, Tokyo 33, 〒1130033, JP)

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