Process for coating metallic molding articles

Details Process for coating metallic molding articles Process for coating metallic molding articles

1997-03-21

2000-07-18

Dudash, Diana

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204471, 205210, 205217, 205219, 427327, 4274301, 4274432, C25D 534, C25D 1320, B05D 118

Patent

active

06090254&

ABSTRACT:
A process for coating a metallic molding article comprising transporting said article by conveyer means continuously and serially through a degreasing stage (1), a first water rinsing stage (2), a surface conditioning stage (3), a chemical conversion treatment stage (4), a second water rinsing stage (5), and an electrodeposition coating stage (6), wherein at least one stage of said stage (1), (2), (3), (4), (5) comprises in dipping said article in a treating bath of dipping system, at least one unit of said treating bath is provided with a vibratory agitation means, and the angles of immersion and emergence of said article with respect to said bath are not less than 25 degrees. The invention contributes to a curtailment of pre-treatment before coating and an effective elimination of adherent metal particles from the matallic article to provide a very satisfactory coating film.

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