Plating method for cylinder

Details Plating method for cylinder Plating method for cylinder

1994-09-01

1997-07-15

Tung, T.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating selected area

205148, 205151, 205271, 205273, C25D 312, C25D 502

Patent

active

056479670

ABSTRACT:
A plating liquid for forming a nickel plating layer containing a dispersed substance and phosphorus having 1.0 g/l or more of sodium is desirably utilized in the high speed plating process. Other important aspects of the invention include a plating method using the aforementioned plating liquid, characterized in that a voltage is impressed while permitting the plating liquid to flow between a surface to be plated of a workpiece at a plating liquid flow rate of 1.0-3.0 m/sec and an electric current density of 20-200 A/dm.sup.2, and an engine cylinder having a plated interior surface characterized in that the plating layer of the cylinder is formed by a high speed plating treatment using the aforementioned plating liquid.

REFERENCES:
patent: 1379050 (1921-05-01), Schulte
patent: 3362893 (1968-01-01), Amaro et al.
patent: 3922208 (1975-11-01), Cordone et al.
patent: 4160704 (1979-07-01), Kuo et al.
patent: 4222828 (1980-09-01), Zuurdeeg
patent: 4404067 (1983-09-01), Enomoto
patent: 4415423 (1983-11-01), Brooks
patent: 4786324 (1988-11-01), Rieger
patent: 4908280 (1990-03-01), Omura et al.
patent: 4990226 (1991-02-01), Byler et al.
Lowenheim, "Electroplating", p. 139, (1978).

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