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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.:

US 10443110 B1

PDFFull Text
Date of Patent:
Oct. 15, 2019

Filed:

Sep. 09, 2014

High toughness and high tensile strength thick steel plate and production method therefor

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Shigeki Kitsuya, Tokyo, JP;

Katsuyuki Ichimiya, Tokyo, JP;

Kazukuni Hase, Tokyo, JP;

Teruhisa Kinugawa, Tokyo, JP;

Naoki Matsunaga, Tokyo, JP;

Kenji Hayashi, Tokyo, JP;

Masayuki Horie, Tokyo, JP;

Yusuke Terazawa, Tokyo, JP;

Shigeru Endo, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Jeffrey D Washville

Int. Cl.
CPC ...
C21D 9/46 (2006.01); C22C 38/54 (2006.01); C22C 38/50 (2006.01); C22C 38/48 (2006.01); C22C 38/46 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C21D 8/02 (2006.01); C21D 1/18 (2006.01); B22D 11/00 (2006.01); B21J 5/02 (2006.01); C22C 38/58 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/18 (2006.01); C22C 38/32 (2006.01); C21D 7/13 (2006.01); C21D 8/00 (2006.01); C21D 9/00 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B21J 5/02 (2013.01); B22D 11/001 (2013.01); C21D 1/18 (2013.01); C21D 7/13 (2013.01); C21D 8/005 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 9/0081 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/32 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01);
Abstract

A high toughness and high tensile strength thick steel plate has a plate thickness of 100 mm or more, wherein a reduction of area in a center of the plate thickness by tension in a plate thickness direction is 40% or more. Thus, a high tensile strength thick steel plate with excellent strength and toughness in a center of the plate thickness can be obtained with no need for a larger production line, even in the case of producing a high strength thick steel plate for which the addition amount of alloying element needs to be increased.

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