Invention Grant
- Patent Title: Galvanized steel sheet and method for producing the same
-
Application No.: US15122036Application Date: 2015-02-27
-
Publication No.: US10351960B2Publication Date: 2019-07-16
- Inventor: Katsuya Hoshino , Shoichiro Taira , Masayasu Nagoshi , Kazutoshi Hanada
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE Steel Corporation
- Current Assignee: JFE Steel Corporation
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JP2014-036381 20140227; JP2014-235497 20141120
- International Application: PCT/JP2015/001054 WO 20150227
- International Announcement: WO2015/129283 WO 20150903
- Main IPC: C23C22/53
- IPC: C23C22/53 ; B32B15/04 ; C23C22/83 ; C23C2/06 ; C23C2/26 ; C23C2/40 ; C25D5/00 ; C23C28/00 ; B32B15/18 ; C23C2/28

Abstract:
Provided is a method for producing a galvanized steel sheet that includes an oxide layer forming step of bringing a galvanized steel sheet into contact with an acidic solution containing sulfate ions, then holding the galvanized steel sheet in contact for 1 to 60 seconds, and then washing the galvanized steel sheet with water; and a neutralization treatment step of holding a surface of an oxide layer, which has been formed in the oxide layer forming step, in contact with an alkaline aqueous solution for 0.5 seconds or longer, and then performing washing with water and drying. The alkaline aqueous solution contains 0.1 g/L or more of carbonate ions.
Public/Granted literature
- US20170016121A1 GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME Public/Granted day:2017-01-19
Information query
IPC分类: