The method and product for the corrosion control treatment of metal surfaces, particularly steel surfaces

A process for corrosion protection treatment of bare metal surfaces, which are at least partially steel surfaces, wherein the metal surfaces with an acidic aqueous solution of a fluoro complex of at least one element M selected from the group B, Si, Ti, Zr and Hf, into contact, rinsed with Wasswer and then coated with a cathodic electrodeposition paint, wherein a) the aqueous solution contains not more than 1 mg / l of an organic polymer with allylamine or vinylamine monomers b additionally contains,) the aqueous solution of at least one further component selected from: contain nitrate ions, copper ions, silver ions, vanadium or vanadate ions, bismuth ions, magnesium ions, zinc ions, manganese ions, cobalt ions, nickel ions, tin ions, buffer systems for the pH range of 2.5 to 5.5, aromatic carboxylic acids having at least two groups containing donor atoms , silica particles having an average particle size below v on 1 micron, and c) the metal surface is not dried with the electrodeposition paint before coating; acidic chromium-free aqueous solution of a Flouoro complex of at least one element M selected from the group B, Si, Ti, Zr and Hf, having a pH value in the range from 2 to 5.5 for treating metal surfaces, which in addition one or more components selected from: tin ions, bismuth ions, buffer systems for the pH range of 2.5 to 5.5, aromatic carboxylic acids having at least two groups ...