发明名称 |
Process of making long-life thin metal plate for automobile bodies, and thin plate made thereby |
摘要 |
Thin metal plate is cleaned and electrolytically pickled in an acid solution. A zinc layer is electrodeposited on one face of the plate, after which a chrome-chromic oxide coating is deposited on both faces of the plate from a sulphuric acid solution containing compounds of trivalent and exhavalent chrome. The plate is then subjected to a drying-oxidating treatment in air. The plate may be steel having a thickness between 0.1 and 2 mm. The plate may be surface treated by phosphating, and then painted. The chrome-chromic oxide coating may have a thickness between 0.05 and 5 mu m, and the zinc coating a thickness between 1 and 30 mu m.
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申请公布号 |
US4495008(A) |
申请公布日期 |
1985.01.22 |
申请号 |
US19820353444 |
申请日期 |
1982.03.01 |
申请人 |
ZINCROKSID S.P.A. |
发明人 |
BRUNO, ROBERTO;MEMMI, MASSIMO |
分类号 |
C25D5/36;C25D11/38;C25D13/20;(IPC1-7):C23F7/26 |
主分类号 |
C25D5/36 |
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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