Production method for hot press molded articles, press molded article, die mold, and mold set

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12179246
APP PUB NO 20210114074A1
SERIAL NO

17044194

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of producing a hot press-formed product includes subjecting an Al-plated steel sheet having a zinc compound layer or a metallic zinc layer, as an outermost layer, provided on an Al plating layer to hot press forming using a die. The die includes a hard layer having a skewness (Rsk), as measured in a direction from the outside of a die hole toward the inside of the die hole, of 1.3 or less and a hardness Hv_Die of HV 2,000 or more, over the entirety of a region of a steel sheet contact surface that is adjacent to a die shoulder portion. The steel sheet contact surface is a surface located outside of the die hole and configured to contact the Al-plated steel sheet that is to be subjected to the hot press forming.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 1008071 JAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fuda, Masahiro Tokyo, JP 34 173
Fujita, Soshi Tokyo, JP 33 87
Irikawa, Hideaki Tokyo, JP 15 30
Kubo, Masahiro Tokyo, JP 197 1346
Nakazawa, Yoshiaki Tokyo, JP 110 578

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