Chemical conversion coating agent and metal with surface treatment

A technology of chemical conversion and coating agent, which is applied in the direction of surface coating liquid device, coating, metal material coating process, etc., which can solve the problems of human hazards and wastewater treatment.

Inactive Publication Date: 2004-07-07
NIPPON PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this metal surface treatment agent contains vanadium, which is harmful to the human body and has a problem of waste water treatment, it is not preferable to use this metal surface treatment agent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-28， comparative example 5-13

[0078] Commercially available cold-rolled steel sheets (SPCC-SD, manufactured by Nippon Testpanel Co. Ltd., 70mm×150mm×0.8mm), galvanized steel sheets (GA steel sheets, manufactured by Nippon Testpanel Co.Ltd., 70mm×150mm×0.8mm), 5000 series aluminum (manufactured by Nippon Testpanel Co. Ltd., 70 mm × 150 mm × 0.8 mm) or 6000 series aluminum (manufactured by Nippon Testpanel Co. Ltd., 70 mm × 150 mm × 0.8 mm) was used as the substrate, and these materials were tested under the following conditions Pretreatment for coating.

[0079] (1) Coating pretreatment

[0080] Degreasing treatment: at 40° C., soak the metal material in 2% by mass of “SURFCLEANER EC92” (a degreasing agent produced by Nippon Paint Co., Ltd.) for 2 minutes.

[0081] Water rinsing after degreasing: Spray with running water for 30 seconds to rinse the metal material.

[0082] Chemical conversion treatment: the chemical conversion coating agent with the composition shown in Tables 1 to 3 was prepared by using...

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PUM

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Abstract

It is an object of the present invention to provide a chemical conversion coating agent which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. A chemical conversion coating agent comprising: at least one kind selected from the group consisting of zirconium, titanium and hafnium; fluorine; and an adhesion and corrosion resistance imparting agent, wherein said adhesion and corrosion resistance imparting agent is at least one kind selected from the group consisting of: 1 to 5000 ppm (metal ion concentration) of at least one kind of metal ion (A) selected from the group consisting of zinc ion, manganese ion and cobalt ion; 1 to 5000 ppm (metal ion concentration) of alkaline earth metal ion (B); 1 to 5000 ppm (metal ion concentration) of metal ion (C) of Group III in the periodic table; 0.5 to 100 ppm (metal ion concentration) of copper ion (D); and 1 to 5000 ppm (as a silicon component) of a silicon-containing compound (E).

Description

technical field [0001] This invention relates to chemical conversion coating agents and surface treated metals. Background technique [0002] When cationic electrocoating or powder coating is performed on the surface of a metal material, a chemical conversion treatment is generally performed to improve, for example, corrosion resistance or adhesion to a coating film. In order to further improve the adhesion and corrosion resistance of the coating film, chromate treatment is used in the chemical conversion treatment. However, in recent years, it has been pointed out that chromium has adverse effects, so it is necessary to develop a chemical conversion coating that does not contain chromium. agent. Then, chemical conversion treatment using zinc phosphate is widely used (see, for example, Japanese Patent Laid-Open No. 10-204649). [0003] However, since the treatment agent based on zinc phosphate has a high metal ion concentration and an acid concentration, and is active, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34
CPCC23C22/34
Inventor 松川真彦牧野一宏岛仓俊明
Owner NIPPON PAINT CO LTD
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