公开(公告)号：EP3139155A4

公开(公告)日：2017-07-05

申请号：EP15818600

申请日：2015-05-14

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  INOSE MASAO

IPC: G01N21/67 ,  G01N21/73 ,  G01N33/20

CPC classification number: G01N21/67 ,  B22D11/001 ,  B22D11/108 ,  B22D11/11 ,  B22D11/16 ,  C21C7/10 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  G01N21/73 ,  G01N33/0036 ,  G01N33/203 ,  G01N33/206

Abstract: Provided are a method for analyzing nitrogen in a metal sample with which nitrogen content in a metal sample is determined accurately and at low cost, 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 for analyzing nitrogen in a metal sample according to the present invention 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.

Abstract translation: 本发明提供一种分析金属试样中的氮的方法，该方法可精确且低成本地测定金属试样中的氮含量，分析金属试样中的氮的装置，调整钢水中的氮浓度的方法及方法 用于制造钢材。 根据本发明的用于分析金属样品中的氮的方法包括：熔融过程，其中通过执行脉冲加热使含有氮成分的金属样品在氩气气氛中熔融以气化氮成分; 以及通过使用气体放电光发射方法分析在熔融过程中产生的氮气和氩气来确定金属样品中的氮含量的分析过程。 通过使用上述分析方法分析从钢水取得的样品的氮浓度，并且基于通过分析得到的氮分析值确定用于调整氮浓度的处理条件，调整钢水中的氮浓度。

公开(公告)号：EP2154531A4

公开(公告)日：2016-11-09

申请号：EP08777800

申请日：2008-06-26

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  ISHIDA TOMOHARU

IPC: G01N33/20 ,  G01N1/28

CPC classification number: G01N33/20 ,  G01N2001/4038

Abstract: A method for analyzing a metal specimen includes an electrolysis step of electrolyzing a metal specimen containing a reference element and a target element in an electrolytic solution, a sampling step of sampling a portion of the electrolytic solution, an analysis step of analyzing the sampled electrolytic solution, a concentration ratio-calculating step of calculating the concentration ratio of the target element to the reference element in the electrolytic solution on the basis of the analysis results, and a content-calculating step of calculating the content of the target element present in the form of a solid solution by multiplying the content of the reference element in the metal specimen by the obtained concentration ratio.

公开(公告)号：EP2163879A4

公开(公告)日：2017-12-20

申请号：EP08765874

申请日：2008-06-26

Applicant: JFE STEEL CORP

Inventor： ISHIDA TOMOHARU ,  KINOSHIRO SATOSHI ,  YAMADA KATSUMI ,  NORO HISATO ,  SATO KAORU

IPC: G01N1/28 ,  G01N1/40 ,  G01N5/02 ,  G01N27/42 ,  G01N33/20

CPC classification number: G01N33/20 ,  G01N5/02 ,  G01N27/42 ,  G01N2001/4088

Abstract: A method for analyzing a metallic material includes the steps of electrolyzing a metal sample in an electrolyte; removing the electrolyzed metal sample from the electrolyte; immersing the metal sample removed from the electrolyte into a dispersive solution that is different from the electrolyte to separate at least one selected from the group consisting of a precipitate and an inclusion deposited on the metal sample; and analyzing the at least one selected from the group consisting of a precipitate and an inclusion extracted into.the dispersive solution.

公开(公告)号：EP2743683A4

公开(公告)日：2014-10-22

申请号：EP12824205

申请日：2012-08-08

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  FUJIMOTO KYOKO ,  INOSE MASAO ,  ITO TOSHIYUKI

IPC: G01N21/64 ,  C21C1/02 ,  C21C7/064 ,  G01J3/44 ,  G01N1/44 ,  G01N31/12 ,  G01N33/00 ,  G01N33/20

CPC classification number: C21C1/02 ,  C21C7/064 ,  G01N21/64 ,  G01N21/643 ,  G01N33/203 ,  G01N2021/6432

公开(公告)号：EP2722405A4

公开(公告)日：2015-09-30

申请号：EP12823682

申请日：2012-08-08

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  ITO TOSHIYUKI ,  KAWABATA RYO ,  ISHIGE TOSHIRO ,  FUJIMOTO KYOKO ,  INOSE MASAO

IPC: C21C7/064 ,  C21C7/00 ,  F27D19/00 ,  F27D21/00 ,  G01N21/64 ,  G01N31/00

CPC classification number: C21C7/0645 ,  C21C1/02 ,  C21C7/0006 ,  C21C7/0037 ,  C21C7/0075 ,  C21C7/0087 ,  C21C7/06 ,  C21C7/064 ,  C21C7/10 ,  C21C2007/0093 ,  C21C2300/08 ,  F27D19/00 ,  F27D21/00 ,  G01N21/64 ,  G01N21/645 ,  G01N33/0042 ,  Y02A50/248

Abstract: There are provided a method for desulfurizing molten steel, characterized in that a sample taken out from molten steel after the tapping from a converter or during the secondary refining is analyzed rapidly in a high accuracy by a method comprising a high frequency induction heating step wherein the sample is combusted and oxidized under the high frequency induction heating in a pure oxygen atmosphere to convert S in the sample into SO 2 and an analyzing step wherein SO 2 -containing gas produced in the high frequency induction heating step is analyzed through an ultraviolet fluorescence method to quantify S concentration of the sample, whereby S concentration of molten steel after the tapping from the converter can be controlled in a high accuracy to prevent failure of S concentration and also desulfurization time in the secondary refining can be shortened and the amount of the desulfurizer or the like used can be reduced, and a method of manufacturing molten steel by using such a method.

公开(公告)号：EP2538213A4

公开(公告)日：2013-07-10

申请号：EP11744428

申请日：2011-02-17

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  HANADA KAZUTOSHI ,  FUJIMOTO KYOKO

IPC: G01N21/64 ,  G01N21/78 ,  G01N31/00 ,  G01N31/12

CPC classification number: G01N33/203 ,  G01N21/643 ,  G01N31/12 ,  Y10T436/188

公开(公告)号：EP2453032A4

公开(公告)日：2014-06-25

申请号：EP10797090

申请日：2010-06-29

Applicant: JFE STEEL CORP

Inventor： NAKAGAWA KOICHI ,  YOKOTA TAKESHI ,  SETO KAZUHIRO ,  KINOSHIRO SATOSHI ,  TANAKA YUJI ,  YAMADA KATSUMI ,  MEGA TETSUYA ,  NAKAJIMA KATSUMI

IPC: C22C38/00 ,  C21D9/46 ,  C22C38/14 ,  C22C38/38

CPC classification number: C22C38/02 ,  C21D8/0226 ,  C21D8/0273 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/24 ,  C22C38/28 ,  Y10T428/12229

公开(公告)号：EP2360469A4

公开(公告)日：2012-11-14

申请号：EP08878444

申请日：2008-12-25

Applicant: JFE STEEL CORP

Inventor： KINOSHIRO SATOSHI ,  ISHIDA TOMOHARU

IPC: G01N33/20 ,  G01N31/02

CPC classification number: G01N31/02 ,  G01N33/20

公开(公告)号：EP2177640A4

公开(公告)日：2012-01-18

申请号：EP08792282

申请日：2008-07-31

Applicant: JFE STEEL CORP

Inventor： NAKAGAWA KOICHI ,  YOKOTA TAKESHI ,  NAKAMURA NOBUYUKI ,  SETO KAZUHIRO ,  KINOSHIRO SATOSHI ,  YAMADA KATSUMI

IPC: C22C38/14 ,  C21D8/02 ,  C21D9/46 ,  C22C38/38

CPC classification number: C22C38/04 ,  C21D8/0426 ,  C21D9/48 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/24 ,  C22C38/28