公开(公告)号：US20220081779A1

公开(公告)日：2022-03-17

申请号：US17471625

申请日：2021-09-10

Applicant: LG ELECTRONICS INC.

Inventor： Sangheon SONG ,  Jin Woo Shim ,  Jong Hun Lim ,  Younghyun Park

IPC: C23G5/00 ,  C01B32/50 ,  C11D7/02 ,  C11D11/00 ,  C23D5/02

Abstract: The present disclosure relates to a treating method of a metal surface, and a coating method thereof using the same. A treating method of a metal surface may include grinding solid carbon dioxide and then spraying the ground solid carbon dioxide onto a metal surface. After spraying the ground solid carbon dioxide, irradiating short-wavelength ultraviolet rays on the metal surface, thereby removing foreign substances attached to the metal surface, reforming the metal surface into a hydrophilic surface and improving wettability of a coating material.