EP2878684A3 - Verfahren zur Steuerung des Entkohlungsreaktionspotentials einer kohlenstoffhaltigen Metallschmelze während einer Sauerstoff-Inertgas-Blas- und Vakuumbehandlung - Google Patents

Verfahren zur Steuerung des Entkohlungsreaktionspotentials einer kohlenstoffhaltigen Metallschmelze während einer Sauerstoff-Inertgas-Blas- und Vakuumbehandlung Download PDF

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Publication number
EP2878684A3
EP2878684A3 EP14188732.3A EP14188732A EP2878684A3 EP 2878684 A3 EP2878684 A3 EP 2878684A3 EP 14188732 A EP14188732 A EP 14188732A EP 2878684 A3 EP2878684 A3 EP 2878684A3
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EP
European Patent Office
Prior art keywords
inert gas
oxygen
molten metal
controlling
potential
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EP14188732.3A
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English (en)
French (fr)
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EP2878684A2 (de
EP2878684B1 (de
Inventor
Johann Reichel
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP2878684A3 publication Critical patent/EP2878684A3/de
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Publication of EP2878684B1 publication Critical patent/EP2878684B1/de
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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
    • 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
    • C21C5/35—Blowing from above and through the bath
    • 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
    • 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

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  • 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)

Abstract

Bei einem Verfahren zur Steuerung der Entkohlungsgeschwindigkeit in einem Konverter beim Frischen einer kohlenstoffhaltigen Metallschmelze, insbesondere Eisenschmelze, aus vorzugsweise einer FeCr- oder FeMn- Legierung mittels der Durchführung eines kombinierten Sauerstoff-Inertgas-Blas- und Vakuumverfahrens, insbesondere eines Vacuum-Oxygen-Decarburisation-Converter-Verfahrens, soll eine Lösung geschaffen werden, die eine effiziente und vorteilhafte Steuerung des Blas- und Vakuumverfahrens beim Frischen einer kohlenstoffhaltigen Metallschmelze ermöglicht. Dies wird dadurch erreicht, dass beim Frischen während der Entkohlung parallel ein Inertgaseintrag, insbesondere die Inertgasdurchflussrate (QIG), in die Metallschmelze und ein Gefäßdruck (p) eingestellt und eingeregelt werden und mittels dieser beiden Parameter die Entkohlungsgeschwindigkeit der Metallschmelze indirekt über das sich jeweils ergebende Entkohlungsreaktionspotential gesteuert wird.
EP14188732.3A 2013-11-27 2014-10-14 Verfahren zur steuerung des entkohlungsreaktionspotentials einer kohlenstoffhaltigen metallschmelze während einer sauerstoff-inertgas-blas- und vakuumbehandlung Active EP2878684B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013224187 2013-11-27
DE102014201827.7A DE102014201827A1 (de) 2013-11-27 2014-02-03 Verfahren zur Steuerung des Entkohlungsreaktionspotentials einer kohlenstoffhaltigen Metallschmelze während einer Sauerstoff-Inertgas-Blas- und Vakuumbehandlung

Publications (3)

Publication Number Publication Date
EP2878684A2 EP2878684A2 (de) 2015-06-03
EP2878684A3 true EP2878684A3 (de) 2015-08-26
EP2878684B1 EP2878684B1 (de) 2017-03-01

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EP14188732.3A Active EP2878684B1 (de) 2013-11-27 2014-10-14 Verfahren zur steuerung des entkohlungsreaktionspotentials einer kohlenstoffhaltigen metallschmelze während einer sauerstoff-inertgas-blas- und vakuumbehandlung

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EP (1) EP2878684B1 (de)
DE (1) DE102014201827A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018121232A1 (de) * 2018-08-30 2020-03-05 Sms Group Gmbh Verfahren zur analytischen Bestimmung des kritischen Prozessmoments bei der Entkohlung von Stahl- und Legierungsschmelzen
DE102021214218A1 (de) 2021-03-08 2022-09-08 Sms Group Gmbh Verfahren zum Herstellen einer Ferrolegierung mit niedrigem Kohlenstoffgehalt
EP4056721A1 (de) 2021-03-08 2022-09-14 SMS Group GmbH Verfahren zum herstellen einer ferrolegierung mit niedrigem kohlenstoffgehalt
EP4056720A1 (de) 2021-03-08 2022-09-14 SMS Group GmbH Verfahren zum herstellen einer ferrolegierung mit niedrigem kohlenstoffgehalt
DE102021214220A1 (de) 2021-03-08 2022-09-08 Sms Group Gmbh Verfahren zum Herstellen einer Ferrolegierung mit niedrigem Kohlenstoffgehalt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2233401A1 (de) * 1973-06-18 1975-01-10 Allegheny Ludlum Ind Inc
EP1431404A1 (de) * 2001-09-20 2004-06-23 Nippon Steel Corporation Verfahren zum raffinieren von chromhaltigem schmelzflüssigem eisen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2233401A1 (de) * 1973-06-18 1975-01-10 Allegheny Ludlum Ind Inc
EP1431404A1 (de) * 2001-09-20 2004-06-23 Nippon Steel Corporation Verfahren zum raffinieren von chromhaltigem schmelzflüssigem eisen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TISSIER J-C ET AL: "DECARBUTION SOUS VIDE: UNE SOLUTION A LA PORTEE DES PME DE FONDERIE//VACUUM DECARBURIZATION: A SOLUTION WITHIN REACH OF SMALL FOUNDRIES", FONDERIE, FONDEUR D'AUJOURD'HUI, EDITIONS TECHNIQUES DES INDUSTRIES DE LA FONDERIE, SEVRES, FR, no. 246, 1 June 2005 (2005-06-01), pages 28 - 39, XP001233549, ISSN: 0249-3136 *

Also Published As

Publication number Publication date
DE102014201827A1 (de) 2015-05-28
EP2878684A2 (de) 2015-06-03
EP2878684B1 (de) 2017-03-01

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