Invention Grant
- Patent Title: Press-formed product
-
Application No.: US14367257Application Date: 2012-12-20
-
Publication No.: US09718113B2Publication Date: 2017-08-01
- Inventor: Masahiro Nakata , Toshiya Suzuki , Tomokichi Tokuda , Masanobu Ichikawa , Nobuyuki Ichimaru
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION , TOYODA IRON WORKS CO., LTD.
- Applicant Address: JP Tokyo JP Aichi
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION,TOYODA IRON WORKS CO., LTD.
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION,TOYODA IRON WORKS CO., LTD.
- Current Assignee Address: JP Tokyo JP Aichi
- Agency: Clark & Brody
- Priority: JP2011-281465 20111222
- International Application: PCT/JP2012/083141 WO 20121220
- International Announcement: WO2013/094705 WO 20130627
- Main IPC: B21D53/88
- IPC: B21D53/88 ; B21D22/26 ; B21D24/04 ; B21D22/20 ; B21D24/06 ; B21K1/76 ; B62D29/00 ; B21D22/10

Abstract:
A press-formed product includes a body having a transverse cross section including a bottom portion and a shoulder portion contiguous to the bottom portion through an R end. In the transverse cross section, a first region from the R end to a position a distance away in a bottom portion extending direction, and a second region which is part of the bottom portion and is contiguous to the first region have a work-hardening distribution introduced by press-forming. The work-hardening distribution has an average hardness Hv1 of an area of the first region from a steel sheet surface to a depth obtained by multiplying a steel sheet thickness by 0.2 and an average hardness Hv2 of an area of the second region from the steel sheet surface to a position obtained by multiplying the steel sheet thickness by 0.2 to satisfy a relationship of Hv1>1.05×Hv2.
Public/Granted literature
- US20140356643A1 PRESS-FORMED PRODUCT Public/Granted day:2014-12-04
Information query