ALUMINUM ALLOY SHEET EXCELLENT IN PRESS FORMABILITY AND CORROSION RESISTANCE

Japanese Patent JP2843210

B2

PURPOSE: To improve press formability and corrosion resistance by forming an Al-Mn alloy plating layer having a regulated Mn content as the outermost layer on an Al alloy sheet and specifying the coating weight of the Al-Mn alloy plating layer.
CONSTITUTION: A specified plating layer made of a single layer or consisting of two or more layers is formed on the surface of an Al alloy sheet to obtain the title Al alloy sheet. The outermost layer of the plating layer is formed with an Al-Mn alloy plating layer contg. 1-70wt.% Mn and the coating weight of the Al-Mn alloy plating layer is regulated to 1-50g/m2. The slidability of the Al alloy sheet is enhanced and the press formability is improved without deteriorating the corrosion resistance.

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MABUCHI MASAKI
UESUGI KOJI
TOTSUKA NOBUO
NAKAKOJI NAOMASA
HASHIGUCHI KOICHI

JP20231992A

January 06, 1999

July 29, 1992

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KAWASAKI SEITETSU KK
TOYOTA JIDOSHA KK
FURUKAWA DENKI KOGYO KK

B21D22/20; C25D5/30; (IPC1-7): C25D5/30; B21D22/20

JP5186893A
JP4289187A
JP426778A
JP63100192A

Nobuto Watanabe (1 person outside)

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