SURFACE TREATMENT AGENT COMPOSITION FOR TIN-PLATED STEEL, AND TIN-PLATED STEEL SUBJECTED TO SURFACE TREATMENT
The purpose of the present invention is to provide a surface treatment agent composition which contains aluminum as the coating film formation component and exhibits excellent properties for removing tin ions within a treatment bath when subjecting a tin-plated steel to electrolytic surface treatmen...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The purpose of the present invention is to provide a surface treatment agent composition which contains aluminum as the coating film formation component and exhibits excellent properties for removing tin ions within a treatment bath when subjecting a tin-plated steel to electrolytic surface treatment, thereby forming a coating film exhibiting excellent corrosion resistance and yellowing resistance. This surface treatment agent composition is used for subjecting a tin-plated steel or a tin-based alloy-plated steel to electrolytic surface treatment and contains aluminum ions, fluorine ions, and polycarboxylic acid. The tin ions that eluted from the tin-plated steel are precipitated within and removed from the treatment bath by using this surface treatment agent composition. |
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