发明名称 |
Pickling agent for the chemical conversion coating of heat exchanger, method of pickling heat exchanger |
摘要 |
The present invention relates to a pickling agent for the chemical conversion coating of a heat exchanger which is capable of cleaning the complicated structure comprising fins and tubes of a heat exchanger in preparation for the successful formation of a chemical conversion film, a method of pickling a heat exchanger, a method of treating a heat exchanger comprising said pickling method, and a heat exchanger produced by using said treating method. The present invention provides pickling agent for the chemical conversion coating of a heat exchanger which comprises an acidic aqueous solution containing nitric acid and/or sulfuric acid and at least one metal and/or metal oxoanion salt derived from any metal selected from the group consisting of iron, nickel, cobalt, molybdenum and cerium.
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申请公布号 |
US2001018965(A1) |
申请公布日期 |
2001.09.06 |
申请号 |
US20000726420 |
申请日期 |
2000.12.01 |
申请人 |
MATSUKAWA MASAHIKO;SAITO KENTARO;INBE TOSHIO;YAMASOE KATSUYOSHI |
发明人 |
MATSUKAWA MASAHIKO;SAITO KENTARO;INBE TOSHIO;YAMASOE KATSUYOSHI |
分类号 |
C23C22/78;C23G1/12;F28F13/18;F28F19/02;(IPC1-7):F25B29/00 |
主分类号 |
C23C22/78 |
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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