发明名称 |
Chemical cleaning process for metall workpieces. |
摘要 |
The cleaning process is usable especially for washing the outer faces of steam generator tubes. The surface metal oxides are removed by a complexing operation (which may be preceded by a reduction) and then dissolving of the siliceous compounds is effected by a reaction with electrophilic compounds in aqueous insertion medium or a reaction with alcohols or amines in aqueous condensation medium, the reaction being intended to weaken the bonds, in a medium ensuring the complexing of Si(OH)4. |
申请公布号 |
EP0636712(A1) |
申请公布日期 |
1995.02.01 |
申请号 |
EP19940401729 |
申请日期 |
1994.07.27 |
申请人 |
FRAMATOME |
发明人 |
SALA, BEATRICE;GELPI, ANGEL |
分类号 |
C23G1/02;C23G1/19;C23G1/24;G21F9/00 |
主分类号 |
C23G1/02 |
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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