发明名称 |
METHOD FOR REGENERATING SOLUTION FOR NITRIC ACID ACTIVATION TREATMENT OF ZINC-PLATED METAL MEMBER SURFACE, AND REGENERATION TREATMENT APPARATUS USING SAME |
摘要 |
Provided is a method for regenerating a nitric acid active treatment solution comprising: adding a zinc ion-aggregating agent to a nitric acid active treatment solution for a surface of a zinc-based material plated metal member, the nitric acid active treatment solution containing zinc ions, to thereby aggregate the zinc ions in the solution as an insoluble salt; and separating and removing the insoluble salt. This regeneration method is employed instead of methods conventionally and widely conducted in zinc-based plating on a steel material such as the exchange of the entire amount of the nitric acid active treatment solution after a lapse of a certain time, and is a method for regenerating a nitric acid active treatment solution, comprising: depositing and removing zinc ions which come to be mixed in the nitric acid active treatment solution during a zinc-based plating process on a steel material, so that the quality of a trivalent chromium chemical conversion treatment can be controlled at a constant level through simplification and cost reduction of a plating control step, and the waste nitric acid can be reduced as much as possible. |
申请公布号 |
EP2848713(A4) |
申请公布日期 |
2016.02.10 |
申请号 |
EP20130787455 |
申请日期 |
2013.05.10 |
申请人 |
DIPSOL CHEMICALS CO., LTD. |
发明人 |
KASHIO RYUTA;YAMAMOTO TOMITAKA |
分类号 |
C23G1/36;C02F1/52;C02F1/54;C02F1/62;C23C22/73;C23C22/78;C25D5/48 |
主分类号 |
C23G1/36 |
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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