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Method and agent for chemical conversion treatment and chemically conversion-treated members

A chemical conversion treatment and chemical conversion technology, which is applied in the field of chemical conversion treatment, can solve the problems such as the surface treatment of high-strength steel plates that have not been studied, and achieve the effect of sufficient substrate coverage and sufficient coating film adhesion

Inactive Publication Date: 2010-05-26
HONDA MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the zircon film-based surface treatment method of Patent Document 2, for example, surface treatment of high-strength steel sheets has not been studied.

Method used

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  • Method and agent for chemical conversion treatment and chemically conversion-treated members
  • Method and agent for chemical conversion treatment and chemically conversion-treated members

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Prepare commercially available cold-rolled steel sheets (SPCC-SD, manufactured by Nippon Testpanel, 70mm×150mm×0.8mm), galvanized steel sheets (GA, manufactured by Nippon Testpanel, 70mm×150mm×0.8mm), 6K21 aluminum sheets for automobiles (AL , manufactured by Kobe Steel Corporation, 70mm×150mm×0.8mm), high-strength steel plate (JSC590R, manufactured by Nippon Steel Corporation, 70mm×150mm×0.8mm), high-strength steel plate (JSC780T, manufactured by Nippon Steel Corporation, 70mm × 150mm × 0.8mm) and high-strength steel plate (JSC1180Y, manufactured by Nippon Steel Corporation, 70mm × 150mm × 2.3mm), as the metal structure.

[0090] [Pretreatment of metal structures before chemical conversion treatment]

[0091] [skim treatment]

[0092] Specifically, the metal structure was immersed in an aqueous solution containing 1.5% by mass of "Agent" and 0.9% by mass of "Agent" as an alkaline degreasing treatment agent "Surf Cleaner SD250 (trade name)" (manufactured by Nippon Pain...

Embodiment 2

[0106] Instead of the bis(2-hydroxyethyl)- A test panel was obtained in the same procedure as in Example 1 except that 3-aminopropyltriethoxysilane was used as the hydroxyl group-containing alkoxysilane. Table 1 shows the measurement results of the obtained test panels.

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Abstract

The invention provides a method for chemical conversion treatment by which a chemical conversion layer attaining satisfactory substrate-covering properties, adhesion to coating and corrosion resistance can be formed on any metal structure surface. A method for chemical conversion treatment by treating a metal structure with an agent for chemical conversion treatment, wherein the agent contains zirconium, fluorine, an amino -containing alkoxysilane, and a hydroxyl-containing alkoxysilane with the contents of zirconium and the amino-containing alkoxysilane being 100 to 700ppm in terms of metal and 50 to 500ppm in terms of solid matter respectively at a fluorine / zirconium molar ratio of 3.5 to 7.0 and has a pH of 2.8 to 4.5.

Description

technical field [0001] The invention relates to a chemical conversion treatment method, in particular to a chemical conversion treatment method suitable for the pre-painting treatment of general industrial products, especially automobile bodies; the invention also relates to a chemical conversion treatment method that can be used in the chemical conversion treatment method The chemical conversion treatment agent used and the chemical conversion treatment member formed by the chemical conversion treatment method. Background technique [0002] For a long time, automobile bodies have been constructed on the basis of metal structures such as bare iron, galvanized steel and other soft steel plates, or aluminum. The surface treatment technology includes, for example, zinc phosphate treatment technology, which ensures the corrosion resistance and adhesion of the coating by depositing a zinc phosphate film on the surface of the material (see Patent Document 1). [0003] However, re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34B05D3/10B05D7/14B32B15/08C09D183/04
CPCC09D183/04C23C2222/20C09D183/08C23C22/34
Inventor 四宫光男安藤克利村井康人
Owner HONDA MOTOR CO LTD
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