Title:
ANODIC OXIDATION TREATMENT OF ALUMINUM PIPE
Document Type and Number:
Japanese Patent JP3264562
Kind Code:
B2
Abstract:
PURPOSE: To surely form an energizing part exposed with aluminum texture without causing the deformation at the end of an aluminum pipe, the contamination of a treating liquid, the contamination of the aluminum pipe surface by grinding powder, etc.
CONSTITUTION: At least a part of an elastic detaining piece 3 coated with a soft resin is detained to the surface of the aluminum pipe 1 in pressurized contact therewith by utilizing the elastic restuitive force of this detaining piece 3. The aluminum pipe 1 is subjected to an anodic oxidation treatment in this state, by which the energizing part in which an anodically oxidized film is not formed is formed in the pressurized contact part of the detaining piece of the surface of the aluminum pipe 1.
Inventors:
Masaaki Ohide
Application Number:
JP24092593A
Publication Date:
March 11, 2002
Filing Date:
September 28, 1993
Export Citation:
Assignee:
SHOWA DENKO K.K.
International Classes:
C25D11/00; (IPC1-7): C25D11/00
Domestic Patent References:
| JP63137198A | ||||
| JP6241074U | ||||
| JP248434Y2 |
Attorney, Agent or Firm:
Hisayoshi Shimizu (2 outside)
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