CATHODIC MATERIAL FOR WORKING ANODICALLY-OXIDIZED FILM OR COMPOSITE MATERIAL FOR FRAME MATERIAL FOR HANGING ANODE

摘要

PURPOSE:To use cathodic material for working an anodically-oxidized film, etc., for a long period by press-fixing a Ti pipe large in corrosion resistance to a core material formed of a pipe, etc., which are made of Cu large in electric conductivity and excellent in mechanical performance and thereby forming the cathodic material, etc. CONSTITUTION:In the case of anodically oxidizing the surface of a product made of aluminum and/or titanium alloy in the aq. soln. of acid or alkali, a cathode or a hanging frame material for an anode is utilized. This cathode or the frame material is formed as a composite material by utilizing a pipe or a bar made of Cu, Al, Fe or these alloys which are large in electric conductivity and excellent in mechanical performance as a core material 12 and press- fixing a Ti pipe 11 which is low in electric conductivity but excellent in corrosion resistance thereto by mechanical work. Erosion preventive action is performed in the terminal of the composite material. Thereby the cathodic material for working an anodically-oxidized film or the hanging frame material for the anode can be utilized for a long period.