Method of electrolytically marking metallic articles

Details Method of electrolytically marking metallic articles Method of electrolytically marking metallic articles

1976-11-08

1978-01-10

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20412965, 204140, 204224R, 204278, C25F 300, C25F 700

Patent

active

040677907

ABSTRACT:
In a known method of electrolytically marking metallic articles a hood having its bottom closed by a stencil with perforations is partially filled with an electrolyte and contains a cathode. An article to be marked is brought into contact with the stencil and constitutes the anode. The invention consists in maintaining the space within the hood at a partial vacuum sufficient to cause bubbles of air which have passed through the perforations in the stencil to flow upward in the hood, thus preventing electrolyte from seeping downward through said perforations.

REFERENCES:
patent: 3748239 (1973-07-01), De Lavalette
patent: 3907649 (1975-09-01), Becker

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