| 摘要 |
<p>An object of the present invention is to unify sealing treatment and degreasing treatment by treating an anodic oxide film of an article to be treated made from aluminum or an aluminum alloy with a strongly basic treatment liquid containing a lithium ion, and simplify a pretreatment step for painting. A method for painting the article to be treated, by forming the anodic oxide film on the article to be treated made from aluminum or the aluminum alloy, and painting the article to be treated by using the anodic oxide film as a substrate, includes a first step including anodic treatment S1 and a second step including painting treatment S3, wherein sealing treatment and degreasing treatment are conducted in a unified way with the use of a strongly basic bath containing the lithium ion.</p> |
