Flat product with a coating system and process for coating said flat product

A layer system, product technology, applied in the field of flat products

Inactive Publication Date: 2016-07-27
THYSSENKRUPP STEEL EURO AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tests on samples of corresponding coatings have shown that such applied layers do not have a permanent moisture-stable bond to the applied conversion coating

Method used

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  • Flat product with a coating system and process for coating said flat product
  • Flat product with a coating system and process for coating said flat product
  • Flat product with a coating system and process for coating said flat product

Examples

Experimental program
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Embodiment Construction

[0057] exist figure 1 shows schematically and not to scale the layer structure produced in two stages on a flat steel product according to alternative d2) of claim 7 . The core layer 1 consisting of steel material is covered here with a Zn-based protective layer 2 which protects the core layer against corrosion. A conversion coating 3 is applied to this protective layer, the adhesion-improving component of which is ZrO 2 . The firmly adhering conversion coating 3 on the protective layer 2 is covered on its side facing away from the core layer 1 by an adhesion promoter layer 4 composed of organosilanes. The conversion coating 3 and the adhesion promoter layer 4 together form a layer system B1 which ensures a permanent and secure adhesion of the polymer layer 5 applied on the side of the adhesion promoter layer 4 facing away from the conversion coating 3 . The thickness of the layer system B1 is here 25-50 nm. In the embodiments described herein, the polymer layer is a paint...

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PUM

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Abstract

A flat product according to the invention has a core layer made of a metal material and, applied to the core layer, a coating system which comprises a conversion layer with inorganic constituents, where said conversion layer improves the adhesion between the core layer and an external layer to be applied to the flat product and containing at least one polymer. In order to provide a coating system that does not create risk to the environment and that at the same time meets all requirements relating to adhesion of the polymer layer, the invention proposes that the coating system comprises an adhesion promoter component which consists of an organosilane and which provides protective covering of the adhesion-promoting inorganic constituents of the conversion layer with respect to the surroundings. The invention also provides a process for producing a flat product according to the invention.

Description

technical field [0001] The invention relates to a flat product having a core layer consisting of a metallic material and a layer system applied to the core layer, which layer system comprises a conversion coating consisting of inorganic components which optimizes the Adhesion of at least one polymer-containing outer layer applied to the flat product to the core layer. Such flat products are generally strips, plates, slabs or other flat products produced by hot or cold rolling of steel, aluminum or other metallic materials, the width of which is in each case significantly greater than its thickness. [0002] Furthermore, the invention relates to a method for producing such a flat product. Background technique [0003] In body construction, paint is usually applied to components formed from various flat products as one of the last processes. In order to achieve the optimum prerequisites for paint adhesion, especially organic coatings are applied on On flat steel products. ...

Claims

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Application Information

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IPC IPC(8): C23C22/34C23C22/83
CPCC23C22/83C23C2222/20C23C22/34B05D1/38B05D3/0466B05D7/14B05D7/24B05D7/54C23C26/00
Inventor马蒂亚斯·金佩尔托马斯·洛斯塔克
OwnerTHYSSENKRUPP STEEL EURO AG