| 摘要 |
PURPOSE:To form a cation electrodeposition paint film of extremely high quality on the surface of a material to be painted by applying a DC voltage between the material to be painted immersed in a paint soln. and counter electrodes consisting of sintered bodies of a conductive metallic oxide. CONSTITUTION:A paint soln. 3 is filled in a vessel which is a tank 1 made of steel plates applied with resin lining 2 on the inner side. A material to be painted (cathode) 5 and counter electrodes 4, 4 consisting of sintered bodies of a conductive metallic oxide, for example, ferrite of low conductivity are immersed in said soln. 3. In this case, two pieces of the electrodes 4, 4 are disposed symmetrically with the material to be painted 5 as a center, and are connected by means of lead wires 6. The material to be painted 5 is connected via contacts 8 to a DC power source 7 connecting to the wires 6. In said state, electricity is supplied to allow cation type paint to deposit on the surface of the material to be paint 5. According to the above-mentioned method, the inclusion of foreign matter or extraneous ions in the soln. 3 is small. |
