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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 9797025 B1

PDFFull Text
Date of Patent:
Oct. 24, 2017

Filed:

Jan. 18, 2017

Method for manufacturing austenite-ferrite stainless steel with improved machinability

Applicants:

Arcelormittal, Luxembourg, LU;

Ugitech, Ugine, FR;

Inventors:

Jerome Peultier, Autun, FR;

Amelie Fanica, Cersot, FR;

Nicolas Renaudot, Albertville, FR;

Christophe Bourgin, Alberville, FR;

Eric Chauveau, Alberville, FR;

Marc Mantel, Mercury, FR;

Assignees:

ArcelorMittal, Luxembourg, LU;

Ugitech, Ugine, FR;

Attorneys:

Davidson, Davidson & Kappel, LLC

Jennifer L. O'Connell

William C. Gehris

Primary Examiner:

Alexander Polyansky

Int. Cl.
CPC ...
C21D 8/00 (2006.01); C21D 9/52 (2006.01); B22D 11/00 (2006.01); C21D 1/613 (2006.01); C21D 1/60 (2006.01); C21D 9/46 (2006.01); C21D 8/02 (2006.01); C21D 8/06 (2006.01); C22C 38/60 (2006.01); C22C 38/58 (2006.01); C22C 38/54 (2006.01); C22C 38/52 (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); B21B 3/02 (2006.01); B21C 1/00 (2006.01); B21J 1/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/525 (2013.01); B21B 3/02 (2013.01); B21C 1/003 (2013.01); B21J 1/02 (2013.01); B22D 11/002 (2013.01); C21D 1/60 (2013.01); C21D 1/613 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 8/065 (2013.01); C21D 9/46 (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 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C22C 38/60 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01);
Abstract

A method for manufacturing a plate, a band, or a coil of hot-rolled steel is provided. The method includes providing an ingot or a slab of steel with a desired composition and a microstructure composed of austenite and 35 to 65% ferrite by volume and hot rolling the ingot or slab at a temperature between 1150 and 1280° C. to obtain a plate, a band or a coil. A method for manufacturing a hot-rolled bar or wire of steel, a steel profile and a forged steel piece are also provided.

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