Invention Grant
- Patent Title: Steel sheet for hot press-forming, method for manufacturing the same, and method for producing hot press-formed parts using the same
-
Application No.: US14382664Application Date: 2013-03-04
-
Publication No.: US10253386B2Publication Date: 2019-04-09
- Inventor: Tatsuya Miyoshi , Seiji Nakajima , Satoru Ando
- 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: JP2012-049867 20120307
- International Application: PCT/JP2013/001294 WO 20130304
- International Announcement: WO2013/132816 WO 20130912
- Main IPC: B32B15/00
- IPC: B32B15/00 ; C21D8/02 ; C23C2/02 ; C23C2/06 ; C23C2/28 ; C23C2/40 ; C21D9/46 ; C22C18/00 ; C22C21/10 ; C22C38/00 ; C22C38/60 ; C21D1/673 ; B32B15/01 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/18 ; C22C38/28 ; C22C38/32 ; B21D22/02 ; C21D7/13
Abstract:
The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/m2 on the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.
Public/Granted literature
Information query
