The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2020
Filed:
Sep. 08, 2015
Jfe Steel Corporation, Chiyoda-ku, Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Masaki Morino, Toyota, JP;
Hideaki Kobiki, Tokyo, JP;
Tatsuya Nakagaito, Tokyo, JP;
Yuichi Tokita, Tokyo, JP;
Toru Minote, Tokyo, JP;
Yoshikiyo Tamai, Tokyo, JP;
JFE STEEL CORPORATION, Chiyoda-ku, Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi, JP;
Abstract
A method for manufacturing a hot press formed part, includes: preparing a hot press forming object comprising a single-ply portion and a two-ply portion; heating the hot press forming object to a temperature range from an Actransformation temperature of a base steel sheet of the first coated steel sheet to 1000° C.; press forming the hot press forming object to obtain a formed body, the press forming being started upon temperatures of the single-ply portion and of the two-ply portion being no higher than solidification points of Zn—Ni coating layers of the first and second coated steel sheets and no lower than an Artransformation temperature of the base steel sheet of the first coated steel sheet; and quenching the formed body to thereby obtain a hot press formed part, in which the hot press forming object has a thickness ratio from 1.4 to 5.0.