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Surface treatment agent for zinc-plated steel sheets

A surface treatment agent, technology of galvanized steel sheet, applied in the direction of superimposed layer plating, coating, metal material coating process, etc. Problems such as unsatisfactory adhesion with adhesives

Active Publication Date: 2017-08-01
NIPPON STEEL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these technologies are poor in flat surface corrosion resistance, processed surface corrosion resistance, adhesion to top coat paint, and blackening resistance, and are unsatisfactory in particular in terms of adhesion to structural adhesives. , there are problems in practical

Method used

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  • Surface treatment agent for zinc-plated steel sheets
  • Surface treatment agent for zinc-plated steel sheets
  • Surface treatment agent for zinc-plated steel sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0066] Hereinafter, the present invention will be described through examples and comparative examples, but this example is merely a simple example and does not limit the present invention. The evaluation methods of the test pieces produced in Examples and Comparative Examples are as follows.

[0067] 1. Materials

[0068] The plated steel materials used are described below.

[0069] M1: molten Zn plating (coating weight 90g / m 2 )

[0070] M2: molten 11%Al-3%Mg-0.2%Si-Zn plating

[0071] (coating weight 90g / m 2 )

[0072] M3: electroplating Zn (coating weight 20g / m 2 )

[0073] M4: Electroplating 11% Ni-Zn (coating weight 20g / m 2 )

[0074] M5: molten 55% Al-1.6% Si-Zn plating

[0075] (coating weight 90g / m 2 )

[0076] 2. Treatment agent

[0077] (1) Treatment agent components

[0078] The zirconium carbonate compound (A) and other zirconium compounds used are described below.

[0079] A1: Potassium zirconium carbonate

[0080] A2: Ammonium zirconium carbonate ...

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Abstract

Provided is a surface treatment agent for zinc-plated steel sheets, said agent satisfying all of corrosion resistance, adhesiveness with top coat paints, blackening resistance, and adhesiveness with structural adhesives. The water-based surface treatment agent for zinc plated steel sheets is obtained by blending a zirconium carbonate compound, a specific acrylic resin, a vanadium compound, a phosphorous compound, and a cobalt compound.

Description

technical field [0001] The present invention relates to the treatment of the surface of a galvanized steel sheet excellent in corrosion resistance, adhesion to top coat paint, blackening resistance, and adhesion to structural adhesives. Background technique [0002] Galvanized steel sheets are used in a wide range of applications such as building materials, automobiles, and home appliances. [0003] Generally, as a technique for imparting corrosion resistance and the like by providing a coating on the surface of a galvanized steel sheet with a surface treatment agent, a method is known in which chromium is applied to a treatment solution containing chromic acid, dichromic acid, or these salts as a main component. A method of salt treatment, a method of phosphate treatment, a method of inorganic metal coating treatment, a method of organic resin coating treatment, etc., have been put into practical use. [0004] As a technique using only inorganic components, Patent Document...

Claims

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Application Information

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IPC IPC(8): C23C22/60C23C28/00
CPCC23C22/60C23C28/00C09D133/20C09D7/47
Inventor 庄司浩雅山冈育郎东新邦彦植田浩平森下敦司工藤英介内田淳一
Owner NIPPON STEEL CORP