Title:
ANODIZING METHOD FOR ALUMINUM DIE CAST PRODUCT
Document Type and Number:
Japanese Patent JPS5672197
Kind Code:
A
Abstract:
PURPOSE:To form anodized film having sufficient thickness and good appearance, by heating an aluminum die cast product in a specific temp. range for a prescribed time, then by anodizing the die cast product. CONSTITUTION:A die cast product is heated at 200-360 deg.C temp. where no blister is formed, for a specific time, then by anodizing the product by usual method. This method allows to form thick anodized film, having improved corrosion resistance and hardness without deteriorating its appearance, precision, and sealing power of aluminum die cast product.
Inventors:
NAKAMURA KAZUO
Application Number:
JP14921179A
Publication Date:
June 16, 1981
Filing Date:
November 16, 1979
Export Citation:
Assignee:
SUMIHIRA SEISAKUSHO KK
International Classes:
C25D11/04; C22F1/04; C25D11/16; (IPC1-7): C25D11/04; C25D11/16
Domestic Patent References:
| JP36003665A |