Process for producing grooves in metallic bodies

Details Process for producing grooves in metallic bodies Process for producing grooves in metallic bodies

1975-02-24

1976-05-04

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

156 8, B29C 1708, C25F 300

Patent

active

039545822

ABSTRACT:
This invention relates to a process for producing helical oil grooves in a spherical metallic body, for example for a spiral groove bearing, which comprises exposing a photographic lacquer on the surface of said body to light under a pattern, developing the resulting image, and electrochemically etching and then chemically etching grooves in said body in the non-image areas, whereby pressure-building spiral grooves are produced having a planar groove bottom, straight walls, sharply right-angled edges, and a depth in the range of about 1 to 20 microns.

REFERENCES:
patent: 2848401 (1958-08-01), Hartley
patent: 3179543 (1965-04-01), Marcelis
patent: 3453159 (1969-07-01), Vandersteen
patent: 3560357 (1971-02-01), Shaw
patent: 3843501 (1974-10-01), King

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