发明名称 |
Wässrige Lösung und Verfahren zur Phosphatierung metallischer Oberflächen |
摘要 |
An aqueous, phosphate-containing solution is disclosed for generating phosphate layers on metallic surfaces made of iron, steel, zinc, zinc alloys, aluminium or aluminium alloys. The solution contains 0.3 to 5 g Zn<2+>/l and 0.1 to 3 g nitroguanidine/l, the S-value being comprised between 0.03 and 0.3 and the weight ratio Zn : P2O5 being from 1: 5 to 1: 30. Also disclosed is a phosphatising process in which the metallic surfaces are cleaned, then treated with the aqueous phosphatising solution for 5 seconds to 10 minutes at a temperature from 15 to 70 DEG C and finally rinsed with water.
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申请公布号 |
DE19634685(A1) |
申请公布日期 |
1998.03.05 |
申请号 |
DE1996134685 |
申请日期 |
1996.08.28 |
申请人 |
METALLGESELLSCHAFT AG, 60323 FRANKFURT, DE |
发明人 |
KOLBERG, THOMAS, 64646 HEPPENHEIM, DE;SCHUBACH, PETER, 61130 NIDDERAU, DE |
分类号 |
C23C22/12;C23C22/18;(IPC1-7):C23C22/12;C25D13/20 |
主分类号 |
C23C22/12 |
代理机构 |
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主权项 |
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地址 |
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