Title:
METHOD FOR MANUFACTURING PRESS-FORMED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2017/170533
Kind Code:
A1
Abstract:
This manufacturing method includes: an arrangement step; a first press step; and a second press step. In the arrangement step, a blank is arranged in a mold. In the first press step, a recessed ridge line (6a), a recessed region (2a), and a region adjacent to the recessed ridge line (6a) of a recess-corresponding vertical wall region adjacent are formed by bending. In the second press step, a projected ridge line (6b), a projected region (2b), and a region adjacent to the projected ridge line (6b) of a projection-corresponding vertical wall region are formed by drawing. Thus, the generation of wrinkles can be suppressed during the manufacturing of a press-formed article (1) in which a top plate (2) undulates in the longitudinal direction.
Inventors:
NISHIMURA RYUICHI (JP)
NAKAZAWA YOSHIAKI (JP)
NAKAZAWA YOSHIAKI (JP)
Application Number:
PCT/JP2017/012609
Publication Date:
October 05, 2017
Filing Date:
March 28, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21D22/26; B21D5/01
Domestic Patent References:
| WO2015046023A1 | 2015-04-02 | |||
| WO2014042067A1 | 2014-03-20 |
Foreign References:
| JP2016002560A | 2016-01-12 | |||
| JP2010064139A | 2010-03-25 |
Other References:
See also references of EP 3437751A4
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
Download PDF:
Previous Patent: IRON OXIDE PARTICLE POWDER FOR FRICTION MATERIAL
Next Patent: AEROGEL COMPOSITE POWDER
Next Patent: AEROGEL COMPOSITE POWDER