Nippon Steel Corporation

Ryo Kuroda

Takashi Miyagi

Yasuharu Tanaka

Misao Ogawa

Toshimitsu Aso

Hiroyuki Tanoue

This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness T, a minimum thickness T, and a maximum thickness Tof the outward flange satisfy Equation 1 and Equation 2.0.8×  (Equation 1)≤1.2×  (Equation 2)

Press-formed article, press-forming method, and press-forming apparatus

A method for manufacturing a press-formed article () includes a first step for forming a base sheet portion, a first rising portion, and a first strip portion from a sheet-shaped workpiece having a first edge portion and a second edge portion; and a second step for forming a second rising portion by causing a strip-shaped first zone including the second edge portion to be disposed between a first upper die and a first lower die from both sides, causing a second zone adjacent to the first zone to be disposed between a second upper die and a second lower die from both sides, and moving the first upper die and the first lower die relative to the second upper die and the second lower die, wherein, in the second step, a part of the second rising portion which is connected to a vertical ridge line () is shear-deformed.

Method for manufacturing press-formed article, press-formed article, and press-forming apparatus

This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness T, a minimum thickness T, and a maximum thickness Tof the outward flange satisfy Equation 1 and Equation 2.0.8&#x2003;&#x2003;(Equation 1)&#x2264;1.2&#x2003;&#x2003;(Equation 2)

This press-formed article includes: a top sheet portion; a sidewall continuing to the top sheet portion via a convex ridge line portion; a flange continuing to the sidewall via a concaved ridge line portion; and an outward flange continuing from an edge portion of the top sheet portion to an edge portion of the flange, via an edge portion of the convex ridge line portion, an edge portion of the sidewall, and an edge portion of the concaved ridge line portion, wherein in the same unit, an average thickness T, a minimum thickness T, and a maximum thickness Tof the outward flange satisfy Equation 1 and Equation 2.0.8&#xd7;&#x2003;&#x2003;(Equation 1)&#x2264;1.2&#xd7;&#x2003;&#x2003;(Equation 2).

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Nagoya, Japan

Ryo Kuroda