Title:
熱間プレス用金型、熱間プレス装置および熱間プレス成形品の製造方法
Document Type and Number:
Japanese Patent JP6760417
Kind Code:
B2
Abstract:
To remove effectively generation of a crack on a vertical wall of a hot press molded article having a hat-shaped or ditch-type cross section.SOLUTION: A hot press molded article 13 is produced by performing hot press molding to a blank 20 by using a mold 15 for hot press including a punch apex 15a and two punch shoulder R parts 15b, and including an inner pad 21 arranged protrusively as long as a prescribed amount from the punch apex 15a and stored in the punch apex 15a at a molding bottom dead center.SELECTED DRAWING: Figure 1
Inventors:
Kenichiro Otsuka
Yoshiaki Nakazawa
Ryuichi Nishimura
Norihiko Nomura
Toshiya Suzuki
Masahiro Kubo
Yoshiaki Nakazawa
Ryuichi Nishimura
Norihiko Nomura
Toshiya Suzuki
Masahiro Kubo
Application Number:
JP2019029574A
Publication Date:
September 23, 2020
Filing Date:
February 21, 2019
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21D24/00; B21D22/20; B21D22/26
Domestic Patent References:
| JP2012051005A | ||||
| JP2010075935A |
Foreign References:
| WO2014148618A1 |
Attorney, Agent or Firm:
Patents corporation Blitas