Metallgesellschaft Aktiengesellschaft

Chemetall Gmbh

Other

Klaus Bittner

Hardy Wietzoreck

Thomas Wendel

Thomas Kolberg

Marcus Schinzel

Toshiaki Shimakura

Norbert Maurus

Heribert Domes

Christian Jung

Werner Rausch

Peter M&uuml;ller

Gerhard Muller

Klaus Wittel

Marion Wegner

Peter Schiefer

Helmut Hulsmann

Walter Km Jansen

Klaus-Peter Mohr

Gerrit Schüllermann

A method for coating metallic surfaces with a paint or paint-like coating prior to forming.

Method for pretreating and/or coating metallic surfaces with a paint-like coating prior to forming and use of substrates coated in this way

The invention relates to a method for coating a metallic strip. The strip or optionally, the strip sections produced from said strip in the subsequent process, is/are first coated with at least one anticorrosion layer&#x2014;according to an alternative form of embodiment, this can be left out&#x2014;and then with at least one layer of a paint-like coating containing polymers. After being coated with at least one anticorrosion layer or after being coated with at least one layer of a paint-like coating, the strip is divided into strip sections. The coated strip sections are then formed, joined and/or coated with at least one (other) paint-like coating and/or paint coating. The paint-like coating is formed by coating the surface with an aqueous dispersion containing the following in addition to water: a) at least one organic film former containing at least one water-soluble or water-dispersed polymer with an acid value of 5 to 200; b) at least one inorganic compound in particle form with an average particle diameter measured on a scanning electron microscope of 0.005 to 0.3 &#x3bc;m; and c) at least one lubricant and/or at least one corrosion inhibitor. The metallic surface that is optionally coated with at least one anticorrosion layer is brought into contact with the aqueous composition and a film containing particles is formed on the metallic surface, this film then being dried and optionally also hardened, the dried and optionally, also hardened film having a layer thickness of 0.01 to 10 &#x3bc;m. The invention also relates to a corresponding aqueous composition.

Metallic surfaces are coated with an aqueous, acidic phosphate solution containing 10 to 60 g/l zinc, 0.5 to 40 g/l manganese, 50 to 300 g/l phosphate ions calculated as PO, and optionally other components.

Method for applying a phosphate covering and use of metal parts thus phospated

Pretreatment of aluminum surfaces with chrome-free solutions

Method of applying phosphate coatings to metal surfaces

Process for the phosphatising treatment of steel strip or sheet

Disclosed is a process for phosphating a galvanized surface, particularly of galvanized steel wherein the surface is contacted for up to 10 seconds with a phosphating solution which contains accelerator, particularly nitrate,

Phosphating process

Growing community of inventors

Frankfurt am Main, Germany

Klaus Bittner