MANUFACTURING METHOD OF THE NANO-STRUCTURE ON GALVANIZED STEEL SURFACE

摘要

PURPOSE: A method for manufacturing a hot-dipped steel sheet with a surface nanostructure is provided to improve the adhesive force and coatability of a steel sheet by forming a nanostructure within seconds. CONSTITUTION: A method for manufacturing a hot-dipped steel sheet with a surface nanostructure is comprises a hot dipping process and a low-pressure plasma processing process. A steel sheet is hot-dipped in the hot dipping process. The low-pressure plasma processing process is performed in the steel sheet in 10-2~20 torr pressure. A nanostructure is formed on the surface of the steel sheet using inert gas and surface reforming agent.