| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treatment method enabling quick formation of an oxide film layer.SOLUTION: A surface treatment method is based on removing grease on the surface of a metal product, removing and neutralizing the substance used in removal of grease, cleaning the metal product and surface-treating the cleaned metal product and includes a solution spraying step of spraying a surface treatment solution obtained by mixing at least ethanol, acetone and water or alcohols onto the surface of the cleaned metal product and an oxide film layer formation step of forming an oxide film layer on the surface of the metal product by burning, directly or indirectly, the metal product treated in the solution spraying step. |
