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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 11261503 B1

PDFFull Text
Date of Patent:
Mar. 01, 2022

Filed:

Sep. 13, 2017

Method for producing a flat steel product made of a manganese-containing steel, and such a flat steel product

Applicant:

Salzgitter Flachstahl Gmbh, Salzgitter, DE;

Inventors:

Peter Palzer, Liebenburg, DE;

Thomas Evertz, Peine, DE;

Manuel Otto, Cremlingen, DE;

Kai Köhler, Nordstemmen, DE;

Assignee:

Salzgitter Flachstahl GmbH, Salzgitter, DE;

Attorney:

Henry M. Feiereisen LLC

Primary Examiner:

Coris Fung

Assistant Examiner:

Danielle Carda

Int. Cl.
CPC ...
C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/60 (2006.01); C21D 6/00 (2006.01); C22C 38/04 (2006.01); C22C 38/16 (2006.01); C22C 38/12 (2006.01); C22C 38/18 (2006.01); C22C 38/14 (2006.01); C22C 38/10 (2006.01); C22C 38/00 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/30 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01);
U.S. Cl.
CPC ...
C21D 8/0268 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 8/0236 (2013.01); C21D 8/0242 (2013.01); C21D 8/0273 (2013.01); C21D 9/46 (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 38/10 (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 38/30 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C22C 38/60 (2013.01); C21D 8/0205 (2013.01); C21D 2201/02 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01);
Abstract

The invention relates to a method for producing a flat steel product made of a medium manganese steel having a TRIP/TWIP effect. The aim of the invention is to achieve an improvement in the yield strength when a sufficient residual deformability of the produced flat steel product is obtained. This aim is achieved by the following steps: cold rolling a hot or cold strip, annealing the cold-rolled hot or cold strip at 500 to 840° C. for 1 minute to 24 hours, temper rolling or finishing the annealed hot or cold strip to form a flat steel product having a degree of deformability between 0.3% and 60%. The invention further relates to a flat steel product produced according to said method and to a use thereof.

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