Title:
ANODIC OXIDATION FILM FORMING METHOD FOR ALUMINUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2023/226631
Kind Code:
A1
Abstract:
The present invention relates to the technical field of metal material surface treatment, in particular to an anodic oxidation film forming method for an aluminum alloy. The method comprises the following steps: basket unloading and upper discharging – degreasing – water washing - alkali washing - water washing – neutralization - water washing - anodic oxidation - water washing - hole sealing - water washing - and lower discharging. During the anodic oxidation process, the solution in an anode tank is a mixed solution containing sulfuric acid and Al3+, with the concentration of H2SO4 being 150-170 g/L, and the concentration of Al3+ being less than or equal to 18 g/L; during the hole sealing process, the content of Ni2+ in a hole sealing tank is 0.9-1.1 g/L, and the pH of the solution in the hole sealing tank is 5.4-5.6. The aluminum alloy photovoltaic profile anodic oxide film is put into a hole sealing tank solution for hole sealing; the aluminum alloy photovoltaic profile anodic oxide film, which has been subjected to hole sealing, is then put into a tap water tank for cleaning; and the cleaned aluminum alloy photovoltaic profile anodic oxide film is then put into a heated deionized water tank for cleaning, such that the advantages of two hole sealing processes of high-temperature hole sealing and low-temperature hole sealing are combined.
Inventors:
WANG QI (CN)
LI XIAOJING (CN)
SHENG JINGWEI (CN)
ZHU ZHU (CN)
LI XIAOJING (CN)
SHENG JINGWEI (CN)
ZHU ZHU (CN)
Application Number:
PCT/CN2023/089103
Publication Date:
November 30, 2023
Filing Date:
April 19, 2023
Export Citation:
Assignee:
YONZ TECH CO LTD (CN)
International Classes:
C25D11/16; C25D11/08; C25D11/18
Foreign References:
| CN114921829A | 2022-08-19 | |||
| CN114990661A | 2022-09-02 | |||
| CN106835236A | 2017-06-13 | |||
| CN101634042A | 2010-01-27 | |||
| CN108796580A | 2018-11-13 | |||
| JP2016145383A | 2016-08-12 |
Other References:
YAN, SHU: "Main Factors Influencing The Low-Temperature Pore Blocking Quality Of Aluminum", NONFERROUS METALS PROCESSING, vol. 30, no. 6, 31 December 2001 (2001-12-31), pages 47 - 49, XP009550776, ISSN: 1671-6795
"Metal Anti-corrosion Technology", 30 September 1998, METALLURGICAL INDUSTRY PRESS,, CN, ISBN: 9787502421892, article WU, JIXUN: "Aluminum Anodizing Process", pages: 196 - 199, XP009550787
"Metal Anti-corrosion Technology", 30 September 1998, METALLURGICAL INDUSTRY PRESS,, CN, ISBN: 9787502421892, article WU, JIXUN: "Aluminum Anodizing Process", pages: 196 - 199, XP009550787
Attorney, Agent or Firm:
SUZHOU HUABO INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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