Process for galvanic deposition of a dispersion coating, applica

Details Process for galvanic deposition of a dispersion coating, applica Process for galvanic deposition of a dispersion coating, applica

1986-01-13

1987-02-24

Tufariello, T. M.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C25D 1700

Patent

active

046455809

ABSTRACT:
A process and device for galvanic deposition of a dispersion coating on the cylindrical or slightly conical inner face of a cathode workpiece effect the continuous feed of a circulating electrolyte containing metal ions and suspended, fine-grained hard particles. The cathodically polarized workpiece or its inner face is employed at least as the upper part of the outer wall of the ring-shaped electrolyte container. This inner face is fed electrolyte in the form of a rising, spiral-shaped but vortex-free stream. The process is employed for all cylindrical or slightly conical metallic inner faces which are at least open on one side, in particular for coating brake drums made of aluminum or an aluminum alloy.

REFERENCES:
patent: 3922208 (1975-11-01), Cordone
patent: 4085010 (1978-04-01), Ishimori
patent: 4174261 (1979-11-01), Pellegrino
patent: 4498967 (1985-02-01), Paulet

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