发明名称 |
Phosphating process for zinc-plated metals |
摘要 |
A process for phosphating zinc-plated metal articles, particularly electrolytically zinc-plated steel sheets, by treatment thereof for a short period with an acidic phosphating solution which, in addition to zinc and phosphate ions, can contain other metal cations and/or anions of oxygen-containing acids having an accelerating effect, wherein the phosphating solution has a content of Zn2+-cations of between about 1 and 2.5 g/l, a free acid content in the range from 0.8 to 3 points, and the acid ratio of total acid to free acid in the range from 5 to 10. The phosphating treatment is carried out for a period of time not in excess of about 5 seconds.
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申请公布号 |
US4497668(A) |
申请公布日期 |
1985.02.05 |
申请号 |
US19830554879 |
申请日期 |
1983.11.25 |
申请人 |
GERHARD COLLARDIN GMBH |
发明人 |
MADY, RASCHAD;HANELT, WINAND;MORLOCK, ROLAND;GERUHN, DIETER;LEYHE, LUTZ;MEYER ZU BEXTEN, JOBST H.;RICKE, FRANZ |
分类号 |
C23C22/12;C23C22/13;(IPC1-7):C23F7/08 |
主分类号 |
C23C22/12 |
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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