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Blackening-treated steel plate

A steel plate, black technology, applied in the field of black steel plate, can solve discoloration and other problems

Inactive Publication Date: 2007-01-03
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through this method, although the aforementioned problems can be effectively solved, the problem that it exists is that when the curing of the coating film is insufficient, if the surface is wiped with a solvent such as alcohol, the color will change.

Method used

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  • Blackening-treated steel plate
  • Blackening-treated steel plate
  • Blackening-treated steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0071] The present invention will be described in detail below by way of examples.

example 1～29

[0073] On the following steel plates A~C of carrying out blackening treatment to the Zn-Ni plated steel plate, the following water-based paint composition is coated with a roll coater, and the water-based paint composition is obtained by adding the following water-soluble organic resin A ~D, 5 metal salts (metal ion types A~I), acids A~E, organic acids A~C, water-dispersible organic resins A~C and glycoluril resins A~D are added according to the ratio shown in Table 1 It was mixed with deionized water (total concentration of 20% by mass), heated for 15 seconds to bring the temperature of the steel plate to 170° C., dried and solidified to form a coating film with a predetermined film thickness, and made into a test piece of a black steel plate.

[0074] Black steel plates A~C:

[0075] Plate A: Anodized electrolytically treated steel plate (plate thickness: 0.7mm)

[0076] Plate B: Cathodic treatment steel plate (plate thickness: 0.7mm)

[0077] Plate C: alternately electrol...

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Abstract

A black steel sheet comprising a Zn-Ni plated steel sheet having undergone a blackening treatment and, superimposed on the surface thereof, a coating formed by application of a coating composition comprising (a) metal ions, (b) a water soluble organic resin, (c) a water dispersible organic resin, (d) a glycoluril resin and (e) an acid.

Description

technical field [0001] The present invention relates to a black steel plate, particularly to a coating composition that does not contain chromium, and has excellent corrosion resistance, and does not cause color changes such as yellowing, greening or whitening and low gloss, scratch resistance, and corrosion resistance. Black steel plate with excellent fingerprint resistance, solvent resistance, and electromagnetic wave shielding properties. Background technique [0002] Recently, black steel sheets with a blackened surface are widely used in office supplies such as personal computers and copiers, home appliances such as air conditioners, automotive parts, and interior building materials. Black steel sheets are generally produced by coating black paint on the surface of galvanized steel sheets, or performing blackening treatments such as anodic electrolysis, cathodic treatment, alternating electrolysis, and anodic oxidation on the plating surface of Zn-Ni-plated steel sheets...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08C23C22/07C09D161/26H05K9/00B05D7/24B05D7/16C09D5/08
CPCY10T428/12799Y10T428/12569B05D2350/65H05K9/0092H05K9/0088B05D7/16Y10T428/12937C09D5/08B32B15/08
Inventor 中丸裕树大塜勇三尾形浩行海野茂多田千代子
Owner JFE STEEL CORP
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