发明名称 |
Phosphating method with control in response to conductivity change |
摘要 |
A method of controlling a continuous process of phosphating metal surfaces in which an acidic zinc phosphate solution is brought to the steady state and there maintained in response to conductivity change, as phosphating proceeds, by addition of replenishments (a) acidic zinc phosphate and (b) alkali metal ion in a definite ratio of addition rates.
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申请公布号 |
US4089710(A) |
申请公布日期 |
1978.05.16 |
申请号 |
US19760678439 |
申请日期 |
1976.04.19 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
COOKE, BRIAN ALFRED |
分类号 |
C23C22/77;(IPC1-7):C23F7/10 |
主分类号 |
C23C22/77 |
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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