FR2402709A1 - Methode de controle d'un procede de fabrication d'acier a des pressions reduites - Google Patents

Methode de controle d'un procede de fabrication d'acier a des pressions reduites

Info

Publication number
FR2402709A1
FR2402709A1 FR7825923A FR7825923A FR2402709A1 FR 2402709 A1 FR2402709 A1 FR 2402709A1 FR 7825923 A FR7825923 A FR 7825923A FR 7825923 A FR7825923 A FR 7825923A FR 2402709 A1 FR2402709 A1 FR 2402709A1
Authority
FR
France
Prior art keywords
reference gas
mixture
reduced pressures
control
manufacturing process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7825923A
Other languages
English (en)
Other versions
FR2402709B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Nisshin Co Ltd
Original Assignee
Nisshin Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Publication of FR2402709A1 publication Critical patent/FR2402709A1/fr
Application granted granted Critical
Publication of FR2402709B1 publication Critical patent/FR2402709B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C21C7/0685—Decarburising of stainless steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

L'invention concerne une méthode de contrôle d'un procédé de fabrication d'acier à des pressions réduites. Selon l'invention, on forme un mélange intime d'un gaz d'échappement et d'un gaz de référence, on contrôle par spectrométrie de masse un échantillon du mélange à la recherche des courants d'ionisation pour des pics choisis concernant CO, CO2 , N2 et le gaz de référence dans l'échantillon; on détermine le taux de décarburation de l'acier fondu à partir de la valeur mesurée de la quantité du gaz de référence dans le mélange et des valeurs mesurées des courants d'ionisation et on controle le procédé selon la valeur déterminée du taux de décarburation. Le dessin joint montre le fait que le changement de la quantité du gaz de référence, DELTA jA est proportionnel au changement du courant d'ionisation DELTA XA pour le parent du gaz de référence. L'invention s'applique notamment à la production d'acier inoxydable.
FR7825923A 1977-09-10 1978-09-08 Methode de controle d'un procede de fabrication d'acier a des pressions reduites Granted FR2402709A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10924777A JPS5442324A (en) 1977-09-10 1977-09-10 Control procedure of steel making process using mass spectrometer

Publications (2)

Publication Number Publication Date
FR2402709A1 true FR2402709A1 (fr) 1979-04-06
FR2402709B1 FR2402709B1 (fr) 1984-05-18

Family

ID=14505334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825923A Granted FR2402709A1 (fr) 1977-09-10 1978-09-08 Methode de controle d'un procede de fabrication d'acier a des pressions reduites

Country Status (9)

Country Link
US (1) US4251269A (fr)
JP (1) JPS5442324A (fr)
BR (1) BR7805883A (fr)
DE (1) DE2839315C2 (fr)
ES (1) ES473216A1 (fr)
FR (1) FR2402709A1 (fr)
GB (1) GB2005726B (fr)
SE (1) SE444818B (fr)
ZA (1) ZA784998B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008200A1 (fr) * 1989-01-13 1990-07-26 Veitscher Magnesitwerke-Actien-Gesellschaft Recipient metallurgique et son agencement
WO1994014984A1 (fr) * 1992-12-18 1994-07-07 Mannesmann Ag Installation sous vide, utile notamment en metallurgie de recyclage

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS569319A (en) * 1979-07-05 1981-01-30 Nippon Steel Corp Vacuum treatment controller for molten steel
HU189326B (en) * 1983-08-26 1986-06-30 Lenin Kohaszati Muevek,Hu Process for production of steels with low or super-low carbon content with the regulation the end point of the carbon and blasting temperature
DE3706742A1 (de) * 1987-02-28 1988-09-08 Salzgitter Peine Stahlwerke Verfahren und vorrichtung zur entgasungsbehandlung einer stahlschmelze in einer vakuumanlage
SE8800321D0 (sv) * 1987-08-20 1988-02-02 Scandinavian Emission Tech Metallurgisk styrmetod
US5603749A (en) * 1995-03-07 1997-02-18 Bethlehem Steel Corporation Apparatus and method for vacuum treating molten steel
DE19745808C1 (de) * 1997-10-16 1998-12-10 Kuske Gmbh Vorrichtung zum Absaugen eines Meßgases aus einem unter Vakuum stehenden Prozessgasraumes
SE9800153D0 (sv) * 1998-01-21 1998-01-21 Hoeganaes Ab Low pressure process
FR2807066B1 (fr) * 2000-03-29 2002-10-11 Usinor Procede de brassage pneumatique du metal liquide en poche
DE102007044568A1 (de) * 2007-09-07 2009-03-12 Sms Demag Ag Indirekte Bestimmung der Abgasrate bei metallurgischen Prozessen
CA2755110C (fr) * 2010-10-13 2014-07-15 Unisearch Associates Inc. Methode et appareil permettant la commande de processus amelioree et la determination en temps reel de teneur en carbone pendant le degazage par le vide de metaux en fusion
JP5760982B2 (ja) * 2011-11-25 2015-08-12 新日鐵住金株式会社 溶鋼の精錬方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1593994A (fr) * 1967-12-05 1970-06-01
US3520657A (en) * 1965-12-27 1970-07-14 Dravo Corp Method and apparatus for the analysis of off-gases in a refining process
FR2099572A1 (en) * 1970-07-24 1972-03-17 Italsider Spa Oxygen converter outlet gas flow monitoring - to determine decarburisation of melt and control finat carbon content

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594155A (en) * 1968-10-30 1971-07-20 Allegheny Ludlum Steel Method for dynamically controlling decarburization of steel
BE755456A (fr) * 1969-08-29 1971-03-01 Allegheny Ludlum Ind Inc Decarburation de l'acier fondu
US3700429A (en) * 1970-01-05 1972-10-24 Allegheny Ludlum Steel Method of controlling vacuum decarburization
US3666439A (en) * 1970-03-02 1972-05-30 Allegheny Ludlum Ind Inc Method of decarburizing alloy steels
US3920447A (en) * 1972-02-28 1975-11-18 Pennsylvania Engineering Corp Steel production method
LU70847A1 (fr) * 1973-09-25 1975-01-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520657A (en) * 1965-12-27 1970-07-14 Dravo Corp Method and apparatus for the analysis of off-gases in a refining process
FR1593994A (fr) * 1967-12-05 1970-06-01
FR2099572A1 (en) * 1970-07-24 1972-03-17 Italsider Spa Oxygen converter outlet gas flow monitoring - to determine decarburisation of melt and control finat carbon content

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008200A1 (fr) * 1989-01-13 1990-07-26 Veitscher Magnesitwerke-Actien-Gesellschaft Recipient metallurgique et son agencement
WO1994014984A1 (fr) * 1992-12-18 1994-07-07 Mannesmann Ag Installation sous vide, utile notamment en metallurgie de recyclage

Also Published As

Publication number Publication date
FR2402709B1 (fr) 1984-05-18
SE7809501L (sv) 1979-03-11
ZA784998B (en) 1979-08-29
GB2005726B (en) 1982-05-26
US4251269A (en) 1981-02-17
GB2005726A (en) 1979-04-25
ES473216A1 (es) 1979-03-16
JPS6232248B2 (fr) 1987-07-14
DE2839315C2 (de) 1985-08-01
SE444818B (sv) 1986-05-12
DE2839315A1 (de) 1979-03-22
JPS5442324A (en) 1979-04-04
BR7805883A (pt) 1979-05-02

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