Title:
METHOD FOR CLEANING ALUMINUM ALLOY MATERIAL WITH IMPARTING EXCELLENT FILIFORM CORROSION RESISTANCE
Document Type and Number:
Japanese Patent JP3442699
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a practicable cleaning method which is capable of improving filiform corrosion resistance by selectively removing Cu from an Al alloy material containing Cu and is capable of cleaning the Al alloy material to get rid of the dirt by rolling mill lubricants, etc,.
SOLUTION: In cleaning the surface of the Al alloy material which contains ≥0.05% Cu and is used by being coated after a chemical conversion treatment, the surface of the Al alloy material is cleaned by an aqueous solution of a compound forming a complex with Cu, by which the Cu existing on the surface of the Al alloy material is removed and the Cu content of the surface of the Al alloy material is reduced to the Cu content in the Al alloy material itself or below.
More Like This:
Inventors:
Mariko Sakata
Kasumi Yanagisawa
Hidekazu Ido
Kasumi Yanagisawa
Hidekazu Ido
Application Number:
JP29232099A
Publication Date:
September 02, 2003
Filing Date:
October 14, 1999
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C23C22/78; C23G1/22; (IPC1-7): C23G1/22; C23C22/78
Domestic Patent References:
| JP3111532A |
Attorney, Agent or Firm:
Yoshiyuki Kaji
Previous Patent: HOT STORAGE CASE
Next Patent: PRESSURE SENSOR, CONTROLLING DEVICE FOR PRESSURE SENSOR, AND PRESSURE SENSOR SYSTEM
Next Patent: PRESSURE SENSOR, CONTROLLING DEVICE FOR PRESSURE SENSOR, AND PRESSURE SENSOR SYSTEM