Spot-weldable aluminum sheet and production thereof

Details Spot-weldable aluminum sheet and production thereof Spot-weldable aluminum sheet and production thereof

1992-06-11

1995-04-25

Turner, A. A.

Metal fusion bonding

Process

Mechanically joining metal/nonmetal and bonding to the metal

148240, 148269, 148272, 148275, 148254, 148285, 148415, 21912163, 228101, 428457, 428472, C25D 1104

Patent

active

054091560

ABSTRACT:
An aluminum sheet for use in spot welding has an anodic oxide film with a thickness of 50 .mu.m or less on at least one surface thereof. The anodic oxide film is preferably overlaid with a plating layer predominantly comprising at least one metal selected from the group consisting of Zn, Cr, Co, Ni, Fe, and Mn. The aluminum sheet can be produced by subjecting an aluminum or aluminum alloy sheet to anodic oxidation in an acidic solution having a pH of 4 or less conditions of from 2 to 200 V in voltage and from 0.2 to 200 seconds in duration, optionally followed by electroplating in an acidic plating bath.

REFERENCES:
patent: 4341942 (1982-07-01), Chaudhari et al.
patent: 4353951 (1982-10-01), Yukitoshi et al.
J. Ruge, "Handbuch der Schweisstechnik Bd. II", 1980, Springer-Verlag, Berlin, Heidelberg, New York.

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