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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 10415112 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Jul. 23, 2015

Method for producing a high strength steel piece

Applicant:

Arcelormittal, Luxembourg, LU;

Inventor:

Artem Arlazarov, Maizieres-les-Metz, FR;

Assignee:

ARCELORMITTAL, Luxembourg, LU;

Attorney:

Davidson, Davidson & Kappel, LLC

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 1/22 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C23C 2/02 (2006.01); C21D 1/18 (2006.01); C21D 1/26 (2006.01); C21D 6/00 (2006.01); C22C 38/34 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/58 (2006.01); C23C 2/06 (2006.01); C23C 2/40 (2006.01); C21D 9/573 (2006.01); C21D 11/00 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 1/18 (2013.01); C21D 1/22 (2013.01); C21D 1/26 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/34 (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); C23C 2/02 (2013.01); C23C 2/06 (2013.01); C23C 2/40 (2013.01); C21D 9/573 (2013.01); C21D 11/00 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01);
Abstract

A method for producing a high strength steel piece having desired mechanical properties, obtainable by a reference heat treatment comprising a first reference treatment and a final reference treatment comprising at least an overaging, The method comprising a step of heat treating on an equipment comprising at least an overaging means for which it is possible to set at least one operating point, the final treatment comprising an overaging for which it is possible to calculate two final treatment parameters OAP1 and OAP2 depending on an operating point of the overaging means. A minimum OAP1 min and a maximum OAP2 max final treatment parameters are determined in order to obtain the desired properties, at least one operating points of the overaging section means is determined such that OAP1≥OAP1 min and OAP2≤OAP2 max. The piece is heat treated accordingly. The parameters are with T (t) the temperature at QT time t Formula (I).

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