Title:
METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2024/053186
Kind Code:
A1
Abstract:
A method for manufacturing a press-molded article 1 provided with at least a top plate portion 3 having a concave curved portion in a side view and a longitudinal wall portion 7 connecting from the top plate portion 3 through a punch-shoulder-radiused portion 5, the method comprising: a first molding step for press-molding an intermediate molded article 19 having an intermediate top plate portion 21 that curves in the same direction as the top plate portion 3, a step-shaped portion 17 that comprises a step formed continuous with a ridge portion 23 formed in an area corresponding to the punch-shoulder-radiused portion 5, and an outward surface portion 25 that extends outward continuous from the step-shaped portion 17 and curves in the same direction as the intermediate top plate portion 21; and a second molding step for press-molding the intermediate molded article 19 into a press-molded article 1.
Inventors:
TANAKA HIROYUKI (JP)
Application Number:
PCT/JP2023/020950
Publication Date:
March 14, 2024
Filing Date:
June 06, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
B21D22/26; B21D53/88
Domestic Patent References:
| WO2020105647A1 | 2020-05-28 | |||
| WO2014097745A1 | 2014-06-26 |
Foreign References:
| JP2017042826A | 2017-03-02 | |||
| JP2011206789A | 2011-10-20 | |||
| JP2015027698A | 2015-02-12 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: