Verfahren zum Aufbringen eines UEberzugs

Water-wet metal articles are coated with organic film-forming material by electrodeposition from an aqueous composition containing the material by first treating the articles with aqueous coating composition to displace water and form a film of coating composition thereon prior to the start of electrodeposition. The articles may be so treated prior to insertion into the electrodeposition bath or they may be immersed in the latter for at least 10 seconds before the start of electrodeposition. Typically the coating bath contains an aqueous dispersion of a pigmented alkyd resin stabilized by ammonia and of a viscosity of 15 cp. at 25 DEG C. After coating the articles may be drained and stored at 200 DEG C. Other suitable film forming materials are ammoniated maleinised oils, water soluble vinyl polymers, and acid salts of polyamide resins.