Title:
METHOD FOR REMOVING DISCHARGE SURFACE TREATMENT FILM
Document Type and Number:
WIPO Patent Application WO/2023/203797
Kind Code:
A1
Abstract:
This method for removing a discharge surface treatment film (14) coated on the surface of a component (12) comprises a main washing step (S10) for performing main washing on a discharge surface treatment film (14) by using a main washing liquid containing a sodium permanganate and a primary alkali metal hydroxide, wherein the discharge surface treatment film (14) contains chromium.
Inventors:
ITO KAZUKI (JP)
Application Number:
PCT/JP2022/041029
Publication Date:
October 26, 2023
Filing Date:
November 02, 2022
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
C23G1/20; B08B3/08; C23C26/00
Domestic Patent References:
| WO2009101690A1 | 2009-08-20 | |||
| WO2018087945A1 | 2018-05-17 |
Foreign References:
| JPH0860194A | 1996-03-05 | |||
| JP2007186786A | 2007-07-26 | |||
| JP2003193276A | 2003-07-09 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
Download PDF: