Title:
CHEMICAL CONVERSION TREATMENT METHOD FOR ALUMINUM ALLOY OR MAGNESIUM ALLOY FORMED BODY
Document Type and Number:
Japanese Patent JP3778876
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a simplified chemical conversion treatment method for the formed body of an aluminum alloy or a magnesium alloy in which degreasing, etching, desmut and neutralization stages can be obviated.
SOLUTION: In the chemical conversion treatment method, the surface of the formed body of at least one kind of alloy selected from an aluminum alloy and a magnesium alloy is subjected to chemical conversion treatment before coating. The method comprises abarrel polishing stage wherein the formed body, an etching liquid of pH <7 and abrasives are charged to a barrel polishing device, and the formed body is polished until at least to 15 s after the point of time at which the pH of the etching liquid is neutralized; a stage of water-washing the formed body; a stage of forming a film on the formed body; and a stage of drying the formed body.
Inventors:
High Hidenori An
Isao Nakatsugawa
Isao Nakatsugawa
Application Number:
JP2002168632A
Publication Date:
May 24, 2006
Filing Date:
June 10, 2002
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B24B31/00; C23C22/78; C23C22/73; (IPC1-7): C23C22/78; B24B31/00; C23C22/73
Domestic Patent References:
| JP61034188A | ||||
| JP58087279A | ||||
| JP2001288580A |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation
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