logo

For the Inventor, By the Inventor

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 11313008 B1

PDFFull Text
Date of Patent:
Apr. 26, 2022

Filed:

Mar. 29, 2018

Steel member and production method therefor

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Shunsuke Toyoda, Tokyo, JP;

Ichiro Sugimoto, Tokyo, JP;

Shuji Kawamura, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

RatnerPrestia

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C22C 38/00 (2006.01); C22C 38/14 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/12 (2006.01); C22C 38/16 (2006.01); C22C 38/06 (2006.01); C22C 38/54 (2006.01); C21D 9/08 (2006.01); C21D 8/02 (2006.01); C21D 8/10 (2006.01); C21D 9/46 (2006.01); C21D 9/50 (2006.01); C22C 38/60 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/08 (2006.01); C22C 38/20 (2006.01); C22C 38/40 (2006.01); C22C 38/46 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/28 (2006.01); B32B 15/01 (2006.01); C22C 38/18 (2006.01); C22C 38/48 (2006.01); C22C 38/26 (2006.01); C22C 38/50 (2006.01); B32B 1/08 (2006.01); F16L 9/17 (2006.01); F16L 9/16 (2006.01); F16L 9/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/08 (2013.01); B32B 1/08 (2013.01); B32B 15/011 (2013.01); C21D 8/021 (2013.01); C21D 8/0226 (2013.01); C21D 8/10 (2013.01); C21D 9/46 (2013.01); C21D 9/50 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/008 (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 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/40 (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 38/60 (2013.01); F16L 9/02 (2013.01); F16L 9/165 (2013.01); F16L 9/17 (2013.01); Y10T 428/12958 (2015.01); Y10T 428/12965 (2015.01); Y10T 428/12972 (2015.01);
Abstract

A steel member, a hot-rolled steel sheet to be used as a material thereof, and production methods therefor are provided. A steel member contains 0.010% to 0.120% Ti, in which 0.005% or more of Ti is precipitated as a precipitate having a particle size of 20 nm or less in the microstructure. A hot-rolled steel sheet for the steel member contains 0.010% to 0.120% Ti, in which 0.005% or more of Ti is present as dissolved Ti in the microstructure. A method for producing the steel member includes subjecting a hot-rolled steel sheet to forming processing and then performing heat treatment including heating to a temperature of higher than 550° C. and 1,050° C. or lower and then cooling at an average cooling rate of 10° C./s or more in the temperature range of 550° C. to 400° C.

Find Patent Forward Citations

Loading…