Hot-press molding method and hot-press molded product

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United States of America Patent

PATENT NO 12091726
APP PUB NO 20210340643A1
SERIAL NO

17378898

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Abstract

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A hot-press molding method of the present disclosure includes a first heating process in which a steel plate is heated and the entire steel plate becomes austenite, a first cooling process in which a cooling rate of the steel plate after the first heating process is partially changed, a first region which is a part of the steel plate is transformed into martensite, and a second region other than the first region remains as austenite, a second heating process in which the entire steel plate is reheated and the first region becomes tempered martensite, and a second cooling process in which the entire steel plate after the second heating process is cooled. At least one of the first cooling process and the second cooling process is performed during a molding process in which the steel plate is press-molded on a molding die.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHATOYOTA-SHI AICHI-KEN 471-8571

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ihara, Tomoaki Toyota, JP 21 18
Okuma, Shinobu Toyota, JP 5 4
Ota, Eiichi Nagakute, JP 3 5
Yogo, Yasuhiro Nagakute, JP 2 1

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