METHOD FOR MANUFACTURING PRESS-MOLDED ITEM, AND PRESS LINE

WIPO Patent Application WO/2022/075464

A1

[Solution] A method for manufacturing a press-molded item (200), the method being characterized by comprising: press-molding a metal plate into a preformed item (100) provided with a preformed bottom plate part (110), a first preformed vertical wall part (120a), a second preformed vertical wall part (120b), a preformed ridgeline part (130) located between the first preformed vertical wall part (120a) and the second preformed vertical wall part (120b), and a bulging part (140) located between the preformed bottom plate part (110) and the first preformed vertical wall part (120a)/second preformed vertical wall part (120b); and press-molding the preformed item (100) into a press-molded item (200) provided with a bottom plate part (210), a first vertical wall part (220a) adjacent to the bottom plate part (210), a second vertical wall part (220b) adjacent to the bottom plate part (210), and a ridgeline part (230) located between the first vertical wall part (220a) and the second vertical wall part (220b).

JP2015016486	THICKNESS DIFFERENCE PLATE AND PRODUCTION METHOD THEREOF
WO/2020/009171	HOT PRESS-FORMED ITEM MANUFACTURING METHOD, PRESS-FORMED ITEM, DIE, AND DIE SET

SUGAWARA MINORU (JP)
YAMAMOTO TAKASHI (JP)
TANAKA YASUHARU (JP)
MIYAGI TAKASHI (JP)
OGAWA MISAO (JP)
NATORI JUNKI (JP)

PCT/JP2021/037432

April 14, 2022

October 08, 2021

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NIPPON STEEL CORP (JP)

B21D22/26; B21D24/00

WO2021141104A1

2021-07-15

JP2002239644A	2002-08-27
JPH0866730A	1996-03-12
JP2002263762A	2002-09-17
JP2020170894A	2020-10-15
JP5708757B1	2015-04-30

See also references of EP 4227016A4

TANAI Sumio et al. (JP)

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