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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 10641711 B1

PDFFull Text
Date of Patent:
May. 05, 2020

Filed:

May. 14, 2015

Method for analyzing nitrogen in metal sample, apparatus for analyzing nitrogen in metal sample, method for adjusting nitrogen concentration in molten steel, and method for manufacturing steel

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Satoshi Kinoshiro, Kawasaki, JP;

Masao Inose, Kawasaki, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Ratnerprestia

Primary Examiner:

Christine T Mui

Int. Cl.
CPC ...
G01N 21/67 (2006.01); G01N 33/205 (2019.01); G01N 21/73 (2006.01); G01N 33/2025 (2019.01); B22D 11/00 (2006.01); B22D 11/108 (2006.01); B22D 11/11 (2006.01); B22D 11/16 (2006.01); C21C 7/10 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); G01N 33/00 (2006.01); G01N 33/20 (2019.01);
U.S. Cl.
CPC ...
G01N 21/67 (2013.01); B22D 11/001 (2013.01); B22D 11/108 (2013.01); B22D 11/11 (2013.01); B22D 11/16 (2013.01); C21C 7/10 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); G01N 21/73 (2013.01); G01N 33/0036 (2013.01); G01N 33/205 (2019.01); G01N 33/2025 (2019.01);
Abstract

Provided are a method for analyzing nitrogen in a metal sample, an apparatus for analyzing nitrogen in a metal sample, a method for adjusting nitrogen concentration in molten steel, and a method for manufacturing steel. The method includes: a melting process in which a metal sample containing a nitrogen component is melted in an argon gas atmosphere by performing impulse heating to gasify the nitrogen component; and an analyzing process in which nitrogen content in the metal sample is determined by analyzing nitrogen gas generated in the melting process and the argon gas by using a gas discharge optical emission method. By analyzing the nitrogen concentration of a sample taken from molten steel by using the analysis method described above, and by determining treatment conditions for adjusting nitrogen concentration on the basis of the nitrogen analysis value derived by the analysis, nitrogen concentration in molten steel is adjusted.

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Kinoshiro, Satoshi. (2020). Method for analyzing nitrogen in metal sample, apparatus for analyzing nitrogen in metal sample, method for adjusting nitrogen concentration in molten steel, and method for manufacturing steel (U.S. Patent No. 10641711). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10641711

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