Method for manufacturing hot-press-formed article, and hot-press-formed article

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12162057
APP PUB NO 20230166314A1
SERIAL NO

17918265

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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This manufacturing method of a hot press-formed article includes a heating step of heating an Al-plated steel sheet and a forming step of obtaining a hot press-formed article using a die after the heating step, the Al-plated steel sheet has a base steel sheet, an Al plating layer, and a coating layer, the coating layer is a metal layer containing at least one metal of Mg, Ca, V, Ti, and Zn, a metal oxide layer containing an oxide of one or more of Mg, Ca, V, Ti, and Zn, or a mixed layer including the metal layer and the metal oxide layer, the die has a hard layer on a surface, HVDie that is a surface hardness of the die at a position of the hard layer is HV1500 or more and HV3800 or less, and a temperature Tm of the Al-plated steel sheet at a start of forming and an average movement velocity V of the die in the forming step satisfy 800−(HVDie/40)≤Tm≤850−(V/4)−(HVDie/100).

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONTOKYO

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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
Nomura, Naruhiko Tokyo, JP 25 44
Suzuki, Yuki Tokyo, JP 132 230

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