发明名称 |
CHROMIUM-FREE SURFACE TREATING SOLUTION HAVING ENHANCED RESISTANCE TO CORROSION AND SULPHIDE STAIN AND SURFACE TREATING METHOD FOR SN-BASED ELECTROLYTICALLY COATED STEEL SHEET USING IT |
摘要 |
A chromium-free post-treating solution having enhanced resistance to corrosion and sulfide stain and a post-treating method of an electroplating steel sheet using the same are provided to include potassium zirconium carbonate and potassium carbonate so as to secure a deposit amount of a film. A post-treating solution includes 60 to 70g of potassium zirconium carbonate and 15 to 30g of potassium carbonate per 1L water. A post-treating process of an electroplated steel sheet using the solution is performed at pH 10~11 and 30~50°C. The post-treating process includes at least one of a dipping method, a spray submerging method, cathode electrolysys, and anodic electrolysis.
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申请公布号 |
KR20080058002(A) |
申请公布日期 |
2008.06.25 |
申请号 |
KR20060132012 |
申请日期 |
2006.12.21 |
申请人 |
POSCO |
发明人 |
BAE, DAE CHUL;KIM, TAE YEOB |
分类号 |
C23C22/82 |
主分类号 |
C23C22/82 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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