Method for anodizing aluminum material

Details Method for anodizing aluminum material Method for anodizing aluminum material

1997-07-01

1998-12-22

Gorgos, Kathryn L.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating moving substrate

205153, 205324, C25D 706, C25D 1104

Patent

active

058513736

ABSTRACT:
A process for the anodization of an aluminum material which can form an anodized film free from local destruction or spalling even if supplied with electric current through the surface of the anodized film in the double-power supplied electrolytic process and/or multi-stage power supply electrolytic process to secure the desired quality and properties. A process for the anodization of an aluminum material can be provided, which comprises anodizing the surface of elongated aluminum or aluminum alloy which advances through a power supply part and an electrolytic part, and then supplying electric current to the surface of said anodized web through another power supply part in such a manner that the following relationships among the current density, the electric supply time and the amount of anodized film thus produced are satisfied:

REFERENCES:
patent: 4396470 (1983-08-01), Atkinson
patent: 4554057 (1985-11-01), Mohr
patent: 4554216 (1985-11-01), Mohr
patent: 4566952 (1986-01-01), Sprintschnick et al.
patent: 4606975 (1986-08-01), Mohr
patent: 4872946 (1989-10-01), Uesugi et al.
patent: 5181997 (1993-01-01), Kaneko et al.
patent: 5207881 (1993-05-01), Kaneko et al.

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