Production method for producing a press-formed product

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United States of America Patent

PATENT NO 10807137
APP PUB NO 20180009017A1
SERIAL NO

15544054

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Abstract

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A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R2 and an interior angle formed by the pair of flat sections is θ2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R1 and an interior angle is θ1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R1, θ1, R2 and θ2 satisfy the conditions of Formulae (1) to (3) below:

description='In-line Formulae' end='lead'1.05<A1/A2  (1);description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'1.0<R1/R2  (2);description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'A1/A2<6.0/(R1/R2)  (3),description='In-line Formulae' end='tail'

    where, A1, A2 represents the supplementary angle of the interior angle θ1, θ2, respectively.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONTOKYO JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakazawa, Yoshiaki Takarazuka, JP 110 578
Nishimura, Ryuichi Kimitsu, JP 40 138
Otsuka, Kenichiro Tokai, JP 77 298
Saito, Masahiro Tokai, JP 202 1407

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